delete unnecessary print

game/.gitignore

@@ -0,0 +1,12 @@
+.~*
+.\#*
+\#*
+*~
+*.o
+main
+*.so
+*.dylib
+__pycache__
+minecraft/region*.lights.vtx
+minecraft/region*.dump
+minecraft/gen/map.txt

game/Makefile

@@ -0,0 +1,85 @@
+#PREFIX = x86_64-w64-mingw32-
+CC=$(PREFIX)gcc
+CXX=$(PREFIX)g++
+
+OPT = -O0 -march=x86-64-v3
+
+CSTD = -std=gnu23
+CXXSTD = -std=gnu++23
+CFLAGS += -g
+CFLAGS += -fpic
+CFLAGS += -I./include
+CFLAGS += -Wall -Werror -Wfatal-errors -Wno-error=unused-variable -Wno-error=unused-but-set-variable
+CFLAGS += -Wno-error=unknown-pragmas -Wno-unknown-pragmas
+CFLAGS += $(shell pkg-config --cflags glfw3)
+CFLAGS += -fno-strict-aliasing
+
+LDFLAGS += -lm
+LDFLAGS += $(shell pkg-config --libs glfw3)
+
+MINECRAFT_OBJS = \
+	minecraft/love2dworld/inthash.o \
+	minecraft/grandlecturn/inthash.o \
+	minecraft/midnightmeadow/inthash.o \
+	src/minecraft.o \
+	src/world/world.o \
+	src/world/entry_table.o
+
+OBJS = \
+	src/gl.o \
+	src/opengl.o \
+	src/test.o \
+	src/font/bitmap.o \
+	src/font/outline.o \
+	src/window.o \
+	src/bresenham.o \
+	src/file.o \
+	src/non_block.o \
+	src/view.o \
+	src/hud.o \
+	src/lighting.o \
+	src/collision_scene.o \
+	src/line_art.o \
+	src/boids.o \
+	src/boids_scene.o \
+	src/dds_validate.o \
+	src/collada/scene.o \
+	src/collada/effect.o \
+	src/collada/node_state.o \
+	src/collada/animate.o \
+	src/lua_api.o \
+	src/pixel_line_art.o \
+	src/flame.o \
+	data/scenes/ship20/ship20.o \
+	data/scenes/noodle/noodle.o \
+	data/scenes/shadow_test/shadow_test.o \
+	data/scenes/book/book.o \
+	$(MINECRAFT_OBJS)
+
+all: test.so
+
+%.o: %.c
+	$(CC) $(ARCH) $(CSTD) $(CFLAGS) $(OPT) -c $< -o $@
+
+%.o: %.cpp
+	$(CXX) $(ARCH) $(CXXSTD) $(CFLAGS) $(OPT) -c $< -o $@
+
+test.so: $(OBJS)
+	$(CC) $(ARCH) $(OPT) -shared -g $^ -o $@ -lSDL3
+
+main: $(OBJS) src/main.o
+	$(CC) $(ARCH) $(LDFLAGS) $(OPT) -g $^ -o $@
+
+clean:
+	find . -type f ! -name "*.*" -delete
+
+.SUFFIXES:
+.INTERMEDIATE:
+.SECONDARY:
+.PHONY: all clean phony
+
+%: RCS/%,v
+%: RCS/%
+%: %,v
+%: s.%
+%: SCCS/s.%

game/build_collada.sh

@@ -0,0 +1,35 @@
+set -eux
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   ~/love-demo/scene/noodle/noodle.DAE \
+                   data/scenes/noodle/noodle.cpp \
+                   data/scenes/noodle/noodle.vtx \
+                   data/scenes/noodle/noodle.vjw \
+                   data/scenes/noodle/noodle.idx
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   include/data/scenes/noodle.h
+
+# shadow_test
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   ~/love-demo/scene/shadow_test/shadow_test.DAE \
+                   data/scenes/shadow_test/shadow_test.cpp \
+                   data/scenes/shadow_test/shadow_test.vtx \
+                   data/scenes/shadow_test/shadow_test.vjw \
+                   data/scenes/shadow_test/shadow_test.idx
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   include/data/scenes/shadow_test.h
+
+# book
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   ~/Downloads/book.DAE \
+                   data/scenes/book/book.cpp \
+                   data/scenes/book/book.vtx \
+                   data/scenes/book/book.vjw \
+                   data/scenes/book/book.idx
+
+PYTHONPATH=~/d3d10 python -m collada.main \
+                   include/data/scenes/book.h

game/conf.lua

@@ -16,16 +16,17 @@ function love.conf(t)
 	t.accelerometerjoystick = false
 	t.externalstorage       = false
 	t.graphics.gammacorrect = false
+  t.graphics.excluderenderers = {"vulkan", "metal"}
 
 	t.audio.mic             = false
 	t.audio.mixwithsystem   = true
 
 	t.window.title          = "test"
 	t.window.icon           = nil
-	t.window.width          = 960
+	t.window.width          = 1024
-	t.window.height         = 720
+	t.window.height         = 1024
 	t.window.borderless     = false
-	t.window.resizable      = false
+	t.window.resizable      = true
 	t.window.minwidth       = 10
 	t.window.minheight      = 9
 	t.window.fullscreen     = false

game/data/map/sprites.json

@@ -1,17 +0,0 @@
-[
-  {
-    "index" : 200,
-    "texture" : "asset/image/sample/javascript-racer-master/images/sprites/column.png",
-    "offset" : -0.1
-  },
-  {
-    "index" : 200,
-    "texture" : "asset/image/sample/javascript-racer-master/images/sprites/cactus.png",
-    "offset" : 4
-  },
-  {
-    "index" : 150,
-    "texture" : "asset/image/sample/javascript-racer-master/images/sprites/stump.png",
-    "offset" : 0
-  }
-]

game/data/scenes/ship20/ship20.cpp

@@ -0,0 +1,429 @@
+#include "collada/types.h"
+
+#include "data/scenes/ship20.h"
+
+namespace ship20 {
+
+  using namespace collada::types;
+
+light const light_environmentambientlight = {
+  .type = light_type::AMBIENT,
+  .color = { 0.0f, 0.0f, 0.0f },
+};
+
+light const light_omni002_light = {
+  .type = light_type::POINT,
+  .color = { 1.0f, 1.0f, 1.0f },
+};
+
+light const light_omni003_light = {
+  .type = light_type::POINT,
+  .color = { 1.0f, 1.0f, 1.0f },
+};
+
+// shipple2_png
+image const image_shipple2_png = {
+  .uri = "data/scenes/ship20/shipple2.dds",
+};
+
+image const * const images[] = {
+  &image_shipple2_png,
+};
+
+effect const effect_diffusetexture = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .ambient = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.588f, 0.588f, 0.588f, 1.0f},
+    },
+    .diffuse = {
+      .type = color_or_texture_type::TEXTURE,
+      .texture = { .image_index = 0 }, // shipple2_png
+    },
+    .specular = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.5f, 0.5f, 0.5f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .type = color_or_texture_type::COLOR,
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_cyanengine = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.9647059f, 1.0f, 1.0f},
+    },
+    .ambient = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .diffuse = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .specular = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .type = color_or_texture_type::COLOR,
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+effect const effect_emissivetexture = {
+  .type = effect_type::BLINN,
+  .blinn = {
+    .emission = {
+      .type = color_or_texture_type::TEXTURE,
+      .texture = { .image_index = 0 }, // shipple2_png
+    },
+    .ambient = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.588f, 0.588f, 0.588f, 1.0f},
+    },
+    .diffuse = {
+      .type = color_or_texture_type::TEXTURE,
+      .texture = { .image_index = 0 }, // shipple2_png
+    },
+    .specular = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .shininess = 10.0f,
+    .reflective = {
+      .type = color_or_texture_type::COLOR,
+      .color = {0.0f, 0.0f, 0.0f, 1.0f},
+    },
+    .reflectivity = 0.0f,
+    .transparent = {
+      .type = color_or_texture_type::COLOR,
+      .color = {1.0f, 1.0f, 1.0f, 1.0f},
+    },
+    .transparency = 1.0f,
+    .index_of_refraction = 0.0f,
+  }
+};
+
+material const material_diffusetexture_material = {
+  .effect = &effect_diffusetexture,
+};
+
+material const material_cyanengine_material = {
+  .effect = &effect_cyanengine,
+};
+
+material const material_emissivetexture_material = {
+  .effect = &effect_emissivetexture,
+};
+
+input_element const input_elements_position_0_3_normal_0_3_texcoord_0_3[] = {
+  {
+    .semantic = "POSITION",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+  {
+    .semantic = "NORMAL",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+  {
+    .semantic = "TEXCOORD",
+    .semantic_index = 0,
+    .format = input_format::FLOAT3,
+  },
+};
+
+triangles const triangles_geom_ship[] = {
+  {
+    .count = 2949, // triangles
+    .index_offset = 0, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 60, // triangles
+    .index_offset = 8847, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+  {
+    .count = 239, // triangles
+    .index_offset = 9027, // indices
+    .inputs_index = 0, // index into inputs_list
+  },
+};
+
+geometry const geometry_geom_ship = {
+  .mesh = {
+    .triangles = triangles_geom_ship,
+    .triangles_count = 3,
+
+    .vertex_buffer_offset = 0,
+    .vertex_buffer_size = 133272,
+
+    .index_buffer_offset = 0,
+    .index_buffer_size = 38976,
+  }
+};
+
+geometry const * const geometries[] = {
+  &geometry_geom_ship,
+};
+
+transform const transforms_node_environmentambientlight[] = {
+};
+
+instance_geometry const instance_geometries_node_environmentambientlight[] = {
+};
+
+instance_controller const instance_controllers_node_environmentambientlight[] = {
+};
+
+instance_light const instance_lights_node_environmentambientlight[] = {
+  {
+    .light = &light_environmentambientlight,
+  }
+};
+
+channel const * const node_channels_node_environmentambientlight[] = {};
+
+node const node_node_environmentambientlight = {
+  .parent_index = -1,
+
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_environmentambientlight,
+  .transforms_count = 0,
+
+  .instance_geometries = instance_geometries_node_environmentambientlight,
+  .instance_geometries_count = 0,
+
+  .instance_controllers = instance_controllers_node_environmentambientlight,
+  .instance_controllers_count = 0,
+
+  .instance_lights = instance_lights_node_environmentambientlight,
+  .instance_lights_count = 1,
+
+  .channels = node_channels_node_environmentambientlight,
+  .channels_count = 0,
+};
+
+transform const transforms_node_ship[] = {
+  {
+    .type = transform_type::ROTATE,
+    .rotate = {0.0f, 0.0f, 1.0f, -180.0f},
+  },
+};
+
+instance_material const instance_geometry_instance_materials_node_ship_0[] = {
+  {
+    .element_index = 1, // an index into mesh.triangles
+    .material = &material_cyanengine_material,
+
+    .emission = { .input_set = -1 },
+    .ambient = { .input_set = -1 },
+    .diffuse = { .input_set = -1 },
+    .specular = { .input_set = -1 },
+  },
+  {
+    .element_index = 0, // an index into mesh.triangles
+    .material = &material_diffusetexture_material,
+
+    .emission = { .input_set = -1 },
+    .ambient = { .input_set = -1 },
+    .diffuse = { .input_set = 0 },
+    .specular = { .input_set = -1 },
+  },
+  {
+    .element_index = 2, // an index into mesh.triangles
+    .material = &material_emissivetexture_material,
+
+    .emission = { .input_set = 0 },
+    .ambient = { .input_set = -1 },
+    .diffuse = { .input_set = 0 },
+    .specular = { .input_set = -1 },
+  },
+};
+
+instance_geometry const instance_geometries_node_ship[] = {
+  {
+    .geometry = &geometry_geom_ship,
+
+    .instance_materials = instance_geometry_instance_materials_node_ship_0,
+    .instance_materials_count = 3,
+  },
+};
+
+instance_controller const instance_controllers_node_ship[] = {
+};
+
+instance_light const instance_lights_node_ship[] = {
+};
+
+channel const * const node_channels_node_ship[] = {
+};
+
+node const node_node_ship = {
+  .parent_index = -1,
+
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_ship,
+  .transforms_count = 1,
+
+  .instance_geometries = instance_geometries_node_ship,
+  .instance_geometries_count = 1,
+
+  .instance_controllers = instance_controllers_node_ship,
+  .instance_controllers_count = 0,
+
+  .instance_lights = instance_lights_node_ship,
+  .instance_lights_count = 0,
+
+  .channels = node_channels_node_ship,
+  .channels_count = 0,
+};
+
+transform const transforms_node_omni002[] = {
+  {
+    .type = transform_type::TRANSLATE,
+    .translate = {-286.5521f, 395.7583f, 161.5579f},
+  },
+};
+
+instance_geometry const instance_geometries_node_omni002[] = {
+};
+
+instance_controller const instance_controllers_node_omni002[] = {
+};
+
+instance_light const instance_lights_node_omni002[] = {
+  {
+    .light = &light_omni002_light,
+  }
+};
+
+channel const * const node_channels_node_omni002[] = {
+};
+
+node const node_node_omni002 = {
+  .parent_index = -1,
+
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_omni002,
+  .transforms_count = 1,
+
+  .instance_geometries = instance_geometries_node_omni002,
+  .instance_geometries_count = 0,
+
+  .instance_controllers = instance_controllers_node_omni002,
+  .instance_controllers_count = 0,
+
+  .instance_lights = instance_lights_node_omni002,
+  .instance_lights_count = 1,
+
+  .channels = node_channels_node_omni002,
+  .channels_count = 0,
+};
+
+transform const transforms_node_omni003[] = {
+  {
+    .type = transform_type::TRANSLATE,
+    .translate = {333.2103f, -314.4593f, 161.5578f},
+  },
+};
+
+instance_geometry const instance_geometries_node_omni003[] = {
+};
+
+instance_controller const instance_controllers_node_omni003[] = {
+};
+
+instance_light const instance_lights_node_omni003[] = {
+  {
+    .light = &light_omni003_light,
+  }
+};
+
+channel const * const node_channels_node_omni003[] = {
+};
+
+node const node_node_omni003 = {
+  .parent_index = -1,
+
+  .type = node_type::NODE,
+
+  .transforms = transforms_node_omni003,
+  .transforms_count = 1,
+
+  .instance_geometries = instance_geometries_node_omni003,
+  .instance_geometries_count = 0,
+
+  .instance_controllers = instance_controllers_node_omni003,
+  .instance_controllers_count = 0,
+
+  .instance_lights = instance_lights_node_omni003,
+  .instance_lights_count = 1,
+
+  .channels = node_channels_node_omni003,
+  .channels_count = 0,
+};
+
+node const * const nodes[] = {
+  &node_node_environmentambientlight, // 0
+  &node_node_ship, // 1
+  &node_node_omni002, // 2
+  &node_node_omni003, // 3
+};
+
+inputs const inputs_list[] = {
+  {
+    .elements = input_elements_position_0_3_normal_0_3_texcoord_0_3,
+    .elements_count = 3,
+  },
+};
+
+collada::types::descriptor const descriptor = {
+  .nodes = nodes,
+  .nodes_count = (sizeof (nodes)) / (sizeof (nodes[0])),
+
+  .inputs_list = inputs_list,
+  .inputs_list_count = (sizeof (inputs_list)) / (sizeof (inputs_list[0])),
+
+  .images = images,
+  .images_count = (sizeof (images)) / (sizeof (images[0])),
+
+  .position_normal_texture_buffer = "data/scenes/ship20/ship20.vtx",
+  .joint_weight_buffer = "data/scenes/ship20/ship20.vjw",
+  .index_buffer = "data/scenes/ship20/ship20.idx",
+};
+
+}

game/include/KHR/khrplatform.h

@@ -0,0 +1,311 @@
+#ifndef __khrplatform_h_
+#define __khrplatform_h_
+
+/*
+** Copyright (c) 2008-2018 The Khronos Group Inc.
+**
+** Permission is hereby granted, free of charge, to any person obtaining a
+** copy of this software and/or associated documentation files (the
+** "Materials"), to deal in the Materials without restriction, including
+** without limitation the rights to use, copy, modify, merge, publish,
+** distribute, sublicense, and/or sell copies of the Materials, and to
+** permit persons to whom the Materials are furnished to do so, subject to
+** the following conditions:
+**
+** The above copyright notice and this permission notice shall be included
+** in all copies or substantial portions of the Materials.
+**
+** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
+*/
+
+/* Khronos platform-specific types and definitions.
+ *
+ * The master copy of khrplatform.h is maintained in the Khronos EGL
+ * Registry repository at https://github.com/KhronosGroup/EGL-Registry
+ * The last semantic modification to khrplatform.h was at commit ID:
+ *      67a3e0864c2d75ea5287b9f3d2eb74a745936692
+ *
+ * Adopters may modify this file to suit their platform. Adopters are
+ * encouraged to submit platform specific modifications to the Khronos
+ * group so that they can be included in future versions of this file.
+ * Please submit changes by filing pull requests or issues on
+ * the EGL Registry repository linked above.
+ *
+ *
+ * See the Implementer's Guidelines for information about where this file
+ * should be located on your system and for more details of its use:
+ *    http://www.khronos.org/registry/implementers_guide.pdf
+ *
+ * This file should be included as
+ *        #include <KHR/khrplatform.h>
+ * by Khronos client API header files that use its types and defines.
+ *
+ * The types in khrplatform.h should only be used to define API-specific types.
+ *
+ * Types defined in khrplatform.h:
+ *    khronos_int8_t              signed   8  bit
+ *    khronos_uint8_t             unsigned 8  bit
+ *    khronos_int16_t             signed   16 bit
+ *    khronos_uint16_t            unsigned 16 bit
+ *    khronos_int32_t             signed   32 bit
+ *    khronos_uint32_t            unsigned 32 bit
+ *    khronos_int64_t             signed   64 bit
+ *    khronos_uint64_t            unsigned 64 bit
+ *    khronos_intptr_t            signed   same number of bits as a pointer
+ *    khronos_uintptr_t           unsigned same number of bits as a pointer
+ *    khronos_ssize_t             signed   size
+ *    khronos_usize_t             unsigned size
+ *    khronos_float_t             signed   32 bit floating point
+ *    khronos_time_ns_t           unsigned 64 bit time in nanoseconds
+ *    khronos_utime_nanoseconds_t unsigned time interval or absolute time in
+ *                                         nanoseconds
+ *    khronos_stime_nanoseconds_t signed time interval in nanoseconds
+ *    khronos_boolean_enum_t      enumerated boolean type. This should
+ *      only be used as a base type when a client API's boolean type is
+ *      an enum. Client APIs which use an integer or other type for
+ *      booleans cannot use this as the base type for their boolean.
+ *
+ * Tokens defined in khrplatform.h:
+ *
+ *    KHRONOS_FALSE, KHRONOS_TRUE Enumerated boolean false/true values.
+ *
+ *    KHRONOS_SUPPORT_INT64 is 1 if 64 bit integers are supported; otherwise 0.
+ *    KHRONOS_SUPPORT_FLOAT is 1 if floats are supported; otherwise 0.
+ *
+ * Calling convention macros defined in this file:
+ *    KHRONOS_APICALL
+ *    KHRONOS_APIENTRY
+ *    KHRONOS_APIATTRIBUTES
+ *
+ * These may be used in function prototypes as:
+ *
+ *      KHRONOS_APICALL void KHRONOS_APIENTRY funcname(
+ *                                  int arg1,
+ *                                  int arg2) KHRONOS_APIATTRIBUTES;
+ */
+
+#if defined(__SCITECH_SNAP__) && !defined(KHRONOS_STATIC)
+#   define KHRONOS_STATIC 1
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APICALL
+ *-------------------------------------------------------------------------
+ * This precedes the return type of the function in the function prototype.
+ */
+#if defined(KHRONOS_STATIC)
+    /* If the preprocessor constant KHRONOS_STATIC is defined, make the
+     * header compatible with static linking. */
+#   define KHRONOS_APICALL
+#elif defined(_WIN32)
+#   define KHRONOS_APICALL __declspec(dllimport)
+#elif defined (__SYMBIAN32__)
+#   define KHRONOS_APICALL IMPORT_C
+#elif defined(__ANDROID__)
+#   define KHRONOS_APICALL __attribute__((visibility("default")))
+#else
+#   define KHRONOS_APICALL
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIENTRY
+ *-------------------------------------------------------------------------
+ * This follows the return type of the function  and precedes the function
+ * name in the function prototype.
+ */
+#if defined(_WIN32) && !defined(_WIN32_WCE) && !defined(__SCITECH_SNAP__)
+    /* Win32 but not WinCE */
+#   define KHRONOS_APIENTRY __stdcall
+#else
+#   define KHRONOS_APIENTRY
+#endif
+
+/*-------------------------------------------------------------------------
+ * Definition of KHRONOS_APIATTRIBUTES
+ *-------------------------------------------------------------------------
+ * This follows the closing parenthesis of the function prototype arguments.
+ */
+#if defined (__ARMCC_2__)
+#define KHRONOS_APIATTRIBUTES __softfp
+#else
+#define KHRONOS_APIATTRIBUTES
+#endif
+
+/*-------------------------------------------------------------------------
+ * basic type definitions
+ *-----------------------------------------------------------------------*/
+#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || defined(__GNUC__) || defined(__SCO__) || defined(__USLC__)
+
+
+/*
+ * Using <stdint.h>
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+/*
+ * To support platform where unsigned long cannot be used interchangeably with
+ * inptr_t (e.g. CHERI-extended ISAs), we can use the stdint.h intptr_t.
+ * Ideally, we could just use (u)intptr_t everywhere, but this could result in
+ * ABI breakage if khronos_uintptr_t is changed from unsigned long to
+ * unsigned long long or similar (this results in different C++ name mangling).
+ * To avoid changes for existing platforms, we restrict usage of intptr_t to
+ * platforms where the size of a pointer is larger than the size of long.
+ */
+#if defined(__SIZEOF_LONG__) && defined(__SIZEOF_POINTER__)
+#if __SIZEOF_POINTER__ > __SIZEOF_LONG__
+#define KHRONOS_USE_INTPTR_T
+#endif
+#endif
+
+#elif defined(__VMS ) || defined(__sgi)
+
+/*
+ * Using <inttypes.h>
+ */
+#include <inttypes.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(_WIN32) && !defined(__SCITECH_SNAP__)
+
+/*
+ * Win32
+ */
+typedef __int32                 khronos_int32_t;
+typedef unsigned __int32        khronos_uint32_t;
+typedef __int64                 khronos_int64_t;
+typedef unsigned __int64        khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif defined(__sun__) || defined(__digital__)
+
+/*
+ * Sun or Digital
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#if defined(__arch64__) || defined(_LP64)
+typedef long int                khronos_int64_t;
+typedef unsigned long int       khronos_uint64_t;
+#else
+typedef long long int           khronos_int64_t;
+typedef unsigned long long int  khronos_uint64_t;
+#endif /* __arch64__ */
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#elif 0
+
+/*
+ * Hypothetical platform with no float or int64 support
+ */
+typedef int                     khronos_int32_t;
+typedef unsigned int            khronos_uint32_t;
+#define KHRONOS_SUPPORT_INT64   0
+#define KHRONOS_SUPPORT_FLOAT   0
+
+#else
+
+/*
+ * Generic fallback
+ */
+#include <stdint.h>
+typedef int32_t                 khronos_int32_t;
+typedef uint32_t                khronos_uint32_t;
+typedef int64_t                 khronos_int64_t;
+typedef uint64_t                khronos_uint64_t;
+#define KHRONOS_SUPPORT_INT64   1
+#define KHRONOS_SUPPORT_FLOAT   1
+
+#endif
+
+
+/*
+ * Types that are (so far) the same on all platforms
+ */
+typedef signed   char          khronos_int8_t;
+typedef unsigned char          khronos_uint8_t;
+typedef signed   short int     khronos_int16_t;
+typedef unsigned short int     khronos_uint16_t;
+
+/*
+ * Types that differ between LLP64 and LP64 architectures - in LLP64,
+ * pointers are 64 bits, but 'long' is still 32 bits. Win64 appears
+ * to be the only LLP64 architecture in current use.
+ */
+#ifdef KHRONOS_USE_INTPTR_T
+typedef intptr_t               khronos_intptr_t;
+typedef uintptr_t              khronos_uintptr_t;
+#elif defined(_WIN64)
+typedef signed   long long int khronos_intptr_t;
+typedef unsigned long long int khronos_uintptr_t;
+#else
+typedef signed   long  int     khronos_intptr_t;
+typedef unsigned long  int     khronos_uintptr_t;
+#endif
+
+#if defined(_WIN64)
+typedef signed   long long int khronos_ssize_t;
+typedef unsigned long long int khronos_usize_t;
+#else
+typedef signed   long  int     khronos_ssize_t;
+typedef unsigned long  int     khronos_usize_t;
+#endif
+
+#if KHRONOS_SUPPORT_FLOAT
+/*
+ * Float type
+ */
+typedef          float         khronos_float_t;
+#endif
+
+#if KHRONOS_SUPPORT_INT64
+/* Time types
+ *
+ * These types can be used to represent a time interval in nanoseconds or
+ * an absolute Unadjusted System Time.  Unadjusted System Time is the number
+ * of nanoseconds since some arbitrary system event (e.g. since the last
+ * time the system booted).  The Unadjusted System Time is an unsigned
+ * 64 bit value that wraps back to 0 every 584 years.  Time intervals
+ * may be either signed or unsigned.
+ */
+typedef khronos_uint64_t       khronos_utime_nanoseconds_t;
+typedef khronos_int64_t        khronos_stime_nanoseconds_t;
+#endif
+
+/*
+ * Dummy value used to pad enum types to 32 bits.
+ */
+#ifndef KHRONOS_MAX_ENUM
+#define KHRONOS_MAX_ENUM 0x7FFFFFFF
+#endif
+
+/*
+ * Enumerated boolean type
+ *
+ * Values other than zero should be considered to be true.  Therefore
+ * comparisons should not be made against KHRONOS_TRUE.
+ */
+typedef enum {
+    KHRONOS_FALSE = 0,
+    KHRONOS_TRUE  = 1,
+    KHRONOS_BOOLEAN_ENUM_FORCE_SIZE = KHRONOS_MAX_ENUM
+} khronos_boolean_enum_t;
+
+#endif /* __khrplatform_h_ */

game/include/boids.h

@@ -0,0 +1,53 @@
+namespace boids {
+
+  struct boid_configuration {
+    float vision_length;
+
+    struct {
+      float coefficient;
+    } cohesion;
+
+    struct {
+      float coefficient;
+    } alignment;
+
+    struct {
+      float minimum_length;
+      float coefficient;
+    } separation;
+
+    struct {
+      float coefficient;
+    } bounds;
+  };
+
+  struct boid_forces {
+    float vision_neighbor_count;
+
+    struct {
+      // intermediate state
+      XMVECTOR center_of_mass;
+      XMVECTOR force;
+    } cohesion;
+
+    struct {
+      // intermediate state
+      XMVECTOR average_velocity;
+      XMVECTOR force;
+    } alignment;
+
+    struct {
+      // intermediate state
+      XMVECTOR force;
+    } separation;
+  };
+
+  struct boid {
+    XMVECTOR position;
+    XMVECTOR velocity;
+  };
+
+  extern boid_configuration configuration;
+
+  boid_forces const & evaluate(boid const * const boids, int length, int boid_index);
+}

game/include/boids_scene.h

@@ -0,0 +1,12 @@
+#pragma once
+
+namespace boids_scene {
+
+  void update(int up, int down, int left, int right,
+              int w, int s, int a, int d,
+              int t, int g, int f, int h,
+              int i, int k, int j, int l);
+
+  void load();
+  void draw();
+}

game/include/bresenham.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void bresenham(int x1, int y1, int z1,
+               int x2, int y2, int z2,
+               void (*func)(int x, int y, int z));
+
+#ifdef __cplusplus
+}
+#endif

game/include/collada/animate.h

@@ -0,0 +1,15 @@
+#include "collada/instance_types.h"
+
+namespace collada::animate {
+  static inline float fract(float f)
+  {
+    return f - floorf(f);
+  }
+
+  static inline float loop(float f, float n)
+  {
+    return fract(f / n) * n;
+  }
+
+  void animate_node(instance_types::node& node_instance, float t);
+}

game/include/collada/effect.h

@@ -0,0 +1,8 @@
+#pragma once
+
+namespace collada::effect {
+  extern unsigned int program_static;
+  extern unsigned int program_skinned;
+
+  void load_effects();
+}

game/include/collada/instance_types.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include "directxmath/directxmath.h"
+
+#include "collada/types.h"
+
+namespace collada::instance_types {
+
+  struct __attribute__((aligned(16))) lookat {
+    XMVECTOR eye;
+    XMVECTOR at;
+    XMVECTOR up;
+  };
+
+  struct __attribute__((aligned(16))) transform {
+    union {
+      instance_types::lookat lookat;
+      XMMATRIX matrix;
+      XMVECTOR vector;
+    };
+    types::transform_type type;
+  };
+
+  struct node {
+    // immutable state
+    types::node const * node;
+
+    // mutable state
+    transform * transforms;
+    XMMATRIX world;
+  };
+}

game/include/collada/node_state.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include "collada/types.h"
+#include "collada/instance_types.h"
+
+namespace collada::node_state {
+  struct state {
+    instance_types::node * node_instances;
+
+    void allocate_node_instances(types::node const * const * const nodes, int nodes_count);
+    void update_node_world_transform(instance_types::node & node_instance);
+  };
+};

game/include/collada/scene.h

@@ -0,0 +1,57 @@
+#pragma once
+
+#include "collada/types.h"
+#include "collada/instance_types.h"
+#include "collada/node_state.h"
+
+namespace collada::scene {
+  struct static_skinned {
+    unsigned int static_mesh;
+    unsigned int skinned_mesh;
+  };
+
+  struct state {
+    types::descriptor const * descriptor;
+    node_state::state node_state;
+
+    unsigned int vertex_buffer_pnt;
+    unsigned int vertex_buffer_jw;
+    unsigned int index_buffer;
+    unsigned int joint_uniform_buffer;
+
+    static_skinned * vertex_arrays;
+    int * vertex_buffer_strides_pnt;
+
+    unsigned int * textures;
+
+    // drawing
+    void load_layouts();
+    void load_images();
+    void load_scene(types::descriptor const * const descriptor);
+
+    void set_color_or_texture(types::color_or_texture const& color_or_texture,
+                              unsigned int color_uniform,
+                              unsigned int texture_unit);
+    void set_instance_material(types::instance_material const& instance_material);
+
+    void draw_geometry(types::geometry const & geometry,
+                       types::instance_material const * const instance_materials,
+                       int const instance_materials_count);
+    void draw_instance_geometries(types::instance_geometry const * const instance_geometries,
+                                  int const instance_geometries_count);
+    void draw_skin(types::skin const& skin,
+                   types::instance_material const * const instance_materials,
+                   int const instance_materials_count);
+    void draw_instance_controllers(types::instance_controller const * const instance_controllers,
+                                   int const instance_controllers_count);
+
+    void draw_node(types::node const & node, instance_types::node const & node_instance);
+    void draw();
+
+    // state updates
+    void update(float t);
+
+    // query
+    instance_types::node * find_node_by_name(char const * name);
+  };
+}

game/include/collada/types.h

@@ -0,0 +1,410 @@
+#pragma once
+
+namespace collada::types {
+
+  struct float2 {
+    float const x;
+    float const y;
+  };
+
+  struct float3 {
+    float const x;
+    float const y;
+    float const z;
+  };
+
+  struct float4 {
+    float const x;
+    float const y;
+    float const z;
+    float const w;
+  };
+
+  struct float7 {
+    float const a;
+    float const b;
+    float const c;
+    float const d;
+    float const e;
+    float const f;
+    float const g;
+  };
+
+  struct matrix {
+    float const _11, _12, _13, _14;
+    float const _21, _22, _23, _24;
+    float const _31, _32, _33, _34;
+    float const _41, _42, _43, _44;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // geometry
+  //////////////////////////////////////////////////////////////////////
+
+  enum class input_format {
+    FLOAT1,
+    FLOAT2,
+    FLOAT3,
+    FLOAT4,
+    INT1,
+    INT2,
+    INT3,
+    INT4,
+  };
+
+  struct input_element {
+    char const * const semantic;
+    int const semantic_index;
+    enum input_format const format;
+  };
+
+  // inputs uniqueness is by evaluted pointer
+  struct inputs {
+    input_element const * const elements;
+    int const elements_count;
+  };
+
+  struct triangles {
+    int const count;
+    int const index_offset;
+    int const inputs_index;
+  };
+
+  struct mesh {
+    // `triangles` must become a union if non-triangles are implemented.
+    // instance_geometry is an index into this array.
+    types::triangles const * triangles;
+    int const triangles_count;
+
+    int const vertex_buffer_offset;
+    int const vertex_buffer_size;
+
+    int const index_buffer_offset;
+    int const index_buffer_size;
+  };
+
+  struct geometry {
+    types::mesh mesh;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // light
+  //////////////////////////////////////////////////////////////////////
+
+  enum class light_type {
+    AMBIENT,
+    DIRECTIONAL,
+    POINT,
+    SPOT,
+  };
+
+  struct light {
+    light_type type;
+    float3 color;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // image
+  //////////////////////////////////////////////////////////////////////
+
+  struct image {
+    const char * uri;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // effect
+  //////////////////////////////////////////////////////////////////////
+
+  enum class color_or_texture_type {
+    COLOR,
+    TEXTURE,
+  };
+
+  struct texture {
+    int const image_index; // index in to images
+  };
+
+  struct color_or_texture {
+    color_or_texture_type type;
+    union {
+      float4 color;
+      types::texture texture;
+    };
+  };
+
+  struct blinn {
+    color_or_texture const emission;
+    color_or_texture const ambient;
+    color_or_texture const diffuse;
+    color_or_texture const specular;
+    float const shininess;
+    color_or_texture const reflective;
+    float const reflectivity;
+    color_or_texture const transparent;
+    float const transparency;
+    float const index_of_refraction;
+  };
+
+  struct lambert {
+    color_or_texture const emission;
+    color_or_texture const ambient;
+    color_or_texture const diffuse;
+    color_or_texture const reflective;
+    float const reflectivity;
+    color_or_texture const transparent;
+    float const transparency;
+    float const index_of_refraction;
+  };
+
+  struct phong {
+    color_or_texture const emission;
+    color_or_texture const ambient;
+    color_or_texture const diffuse;
+    color_or_texture const specular;
+    float const shininess;
+    color_or_texture const reflective;
+    float const reflectivity;
+    color_or_texture const transparent;
+    float const transparency;
+    float const index_of_refraction;
+  };
+
+  struct constant {
+    float4 const color;
+    color_or_texture const reflective;
+    float const reflectivity;
+    color_or_texture const transparent;
+    float const transparency;
+    float const index_of_refraction;
+  };
+
+  enum class effect_type {
+    BLINN,
+    LAMBERT,
+    PHONG,
+    CONSTANT,
+  };
+
+  struct effect {
+    effect_type const type;
+    union {
+      types::blinn const blinn;
+      types::lambert const lambert;
+      types::phong const phong;
+      types::constant const constant;
+    };
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // node
+  //////////////////////////////////////////////////////////////////////
+
+  struct lookat {
+    float3 const eye;
+    float3 const at;
+    float3 const up;
+  };
+
+  enum class transform_type {
+    LOOKAT,
+    MATRIX,
+    ROTATE,
+    SCALE,
+    SKEW,
+    TRANSLATE,
+  };
+
+  struct transform {
+    transform_type const type;
+    union {
+      types::lookat const lookat;
+      types::matrix const matrix;
+      float4 const rotate;
+      float3 const scale;
+      float7 const skew;
+      float3 const translate;
+    };
+  };
+
+  enum class node_type {
+    JOINT,
+    NODE,
+  };
+
+  struct material {
+    types::effect const * const effect;
+  };
+
+  struct bind_vertex_input {
+    int input_set; // TEXCOORD semantic input slot
+  };
+
+  struct instance_material {
+    int const element_index; // an index into mesh.triangles
+    types::material const * const material;
+
+    // heavily simplified from collada data model
+    bind_vertex_input const emission;
+    bind_vertex_input const ambient;
+    bind_vertex_input const diffuse;
+    bind_vertex_input const specular;
+  };
+
+  struct instance_geometry {
+    types::geometry const * const geometry;
+
+    instance_material const * const instance_materials;
+    int const instance_materials_count;
+  };
+
+  struct skin {
+    types::geometry const * const geometry; // source
+
+    matrix const bind_shape_matrix; // one per skin
+    matrix const * const inverse_bind_matrices; // one per joint
+
+    int const vertex_buffer_offset;
+    int const vertex_buffer_size;
+  };
+
+  struct controller {
+    types::skin skin;
+  };
+
+  struct instance_controller {
+    types::controller const * const controller;
+
+    //node const * const skeleton; // a reference to the root of the joint heirarchy
+
+    int const * const joint_node_indices; // one per joint
+    int const joint_count;
+
+    instance_material const * const instance_materials;
+    int const instance_materials_count;
+  };
+
+  struct instance_light {
+    types::light const * const light;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // animation
+  //////////////////////////////////////////////////////////////////////
+
+  enum class interpolation {
+    LINEAR,
+    BEZIER,
+  };
+
+  struct source {
+    union {
+      float const * const float_array;
+      enum interpolation const * const interpolation_array;
+    };
+    int const count;
+    int const stride;
+  };
+
+  struct sampler {
+    source const input;
+    source const output;
+    source const in_tangent;
+    source const out_tangent;
+    source const interpolation;
+  };
+
+  enum class target_attribute {
+    A, // alpha color component
+    ANGLE, // euler angle
+    B, // blue color component
+    G, // green color component
+    P, // third texture component
+    Q, // fourth texture component
+    R, // red color component
+    S, // first texture coordinate
+    T, // second texture coordinate
+    TIME, // time in seconds
+    U, // first generic parameter
+    V, // second generic parameter
+    W, // fourth cartesian coordinate
+    X, // first cartesian coordinate
+    Y, // second cartesian coordinate
+    Z, // third cartesian coordinate
+    ALL,
+  };
+
+  struct channel {
+    sampler const * const source_sampler;
+    int const target_node_index; // an index into the nodes array
+    int const target_transform_index;
+    types::target_attribute const target_attribute;
+  };
+
+  /*
+  struct animation {
+    animation const * const animations; // nested animations
+    int const animations_count;
+
+    channels const * const channels;
+    int const channels_count;
+  };
+  */
+
+  struct camera {
+    float xfov;
+    float yfov;
+    float znear;
+    float zfar;
+    float aspect_ratio;
+  };
+
+  //////////////////////////////////////////////////////////////////////
+  // scene
+  //////////////////////////////////////////////////////////////////////
+
+  struct node {
+    char const * name;
+
+    int const parent_index;
+
+    node_type const type;
+
+    transform const * const transforms;
+    int const transforms_count;
+
+    instance_geometry const * const instance_geometries;
+    int const instance_geometries_count;
+
+    instance_controller const * const instance_controllers;
+    int const instance_controllers_count;
+
+    instance_light const * const instance_lights;
+    int const instance_lights_count;
+
+    channel const * const * const channels;
+    int const channels_count;
+
+    //node const * const * const nodes;
+    //int const nodes_count;
+  };
+
+  struct descriptor {
+    // these are only the top-level nodes; nodes may have children
+    node const * const * const nodes;
+    int const nodes_count;
+
+    inputs const * const inputs_list;
+    int const inputs_list_count;
+
+    image const * const * const images;
+    int const images_count;
+
+    //animation const * const animations;
+    //int const animations_count;
+
+    // hmm, this part is not really platform-agnostic:
+    char const * const position_normal_texture_buffer;
+    char const * const joint_weight_buffer;
+    char const * const index_buffer;
+  };
+}

game/include/collada_scene/ship20.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include "collada/types.h"
+
+namespace collada_scene::ship20 {
+  extern collada::types::descriptor const descriptor;
+}

game/include/collision.h

@@ -0,0 +1,253 @@
+#pragma once
+
+#include <float.h>
+#include <stdio.h>
+
+#include "directxmath/directxmath.h"
+
+namespace collision {
+
+  struct AABB {
+    XMVECTOR min;
+    XMVECTOR max;
+  };
+
+  struct Sphere {
+    XMVECTOR center;
+    float radius;
+  };
+
+  struct Capsule {
+    XMVECTOR a;
+    XMVECTOR b;
+    float radius;
+  };
+
+  static inline AABB cube_aabb(XMVECTOR const & center, float half)
+  {
+    half = fabsf(half);
+    XMVECTOR min = center + XMVectorReplicate(-half);
+    XMVECTOR max = center + XMVectorReplicate( half);
+    return AABB(min, max);
+  }
+
+  static inline XMVECTOR closest_point_point_aabb(XMVECTOR const & p, AABB const & aabb)
+  {
+    return XMVectorClamp(p, aabb.min, aabb.max);
+  }
+
+  static inline bool test_sphere_aabb(Sphere const & sphere, AABB const & aabb, XMVECTOR & point)
+  {
+    point = closest_point_point_aabb(sphere.center, aabb);
+
+    XMVECTOR v = point - sphere.center;
+    return XMVectorGetX(XMVector3Dot(v, v)) <= sphere.radius * sphere.radius;
+  }
+
+  static inline void vector_swap_control(XMVECTOR & a, XMVECTOR & b, XMVECTOR const & control)
+  {
+    XMVECTOR tmp = XMVectorSelect(a, b, control);
+    b = XMVectorSelect(b, a, control);
+    a = tmp;
+  }
+
+  static inline bool intersect_ray_aabb(XMVECTOR const & point, XMVECTOR const & direction, AABB const & aabb, float & t_result, XMVECTOR & v_result)
+  {
+    // check parallel
+    XMVECTOR parallel = XMVectorLess(XMVectorAbs(direction), XMVectorSplatEpsilon());
+    XMVECTOR point_lt_aabb = XMVectorLess(point, aabb.min);
+    XMVECTOR point_gt_aabb = XMVectorGreater(point, aabb.max);
+    if (XMVectorGetX(parallel) != 0) // if (x < epsilon)
+      if (XMVectorGetX(point_lt_aabb) != 0 || XMVectorGetX(point_gt_aabb) != 0)
+        return false; // direction x is parallel and point x outside aabb
+    if (XMVectorGetY(parallel) != 0) // if (y < epsilon)
+      if (XMVectorGetY(point_lt_aabb) != 0 || XMVectorGetY(point_gt_aabb) != 0)
+        return false; // direction y is parallel and point y outside aabb
+    if (XMVectorGetZ(parallel) != 0) // if (z < epsilon)
+      if (XMVectorGetZ(point_lt_aabb) != 0 || XMVectorGetZ(point_gt_aabb) != 0)
+        return false; // direction z is parallel and point z outside aabb
+
+    XMVECTOR direction_reciprocal = XMVectorReciprocalEst(direction);
+    XMVECTOR t1 = (aabb.min - point) * direction_reciprocal;
+    XMVECTOR t2 = (aabb.max - point) * direction_reciprocal;
+    vector_swap_control(t2, t1, XMVectorGreater(t1, t2));
+
+    float tmin = XMVectorGetX(t1);
+    if (XMVectorGetY(t1) > tmin) tmin = XMVectorGetY(t1);
+    if (XMVectorGetZ(t1) > tmin) tmin = XMVectorGetZ(t1);
+    float tmax = XMVectorGetX(t2);
+    if (XMVectorGetY(t2) < tmax) tmax = XMVectorGetY(t2);
+    if (XMVectorGetZ(t2) < tmax) tmax = XMVectorGetZ(t2);
+    if (tmin > tmax) return false; // no intersection
+
+    t_result = tmin;
+    v_result = point + direction * tmin;
+
+    return true;
+  }
+
+  static inline float clamp(float f, float min, float max)
+  {
+    if (f < min) return min;
+    if (f > max) return max;
+    return f;
+  }
+
+  static inline void closest_point_segment_segment(XMVECTOR const & a1, XMVECTOR const & b1, // segment 1
+                                                   XMVECTOR const & a2, XMVECTOR const & b2, // segment 2
+                                                   float & t1, // (s)
+                                                   float & t2, // (t)
+                                                   XMVECTOR & c1, // closest point to segment 1
+                                                   XMVECTOR & c2) // closest point to segment 2
+  {
+    const float epsilon = 1.192092896e-7f;
+
+    XMVECTOR d1 = b1 - a1;
+    XMVECTOR d2 = b2 - a2;
+    XMVECTOR r = a1 - a2;
+    float l1 = XMVectorGetX(XMVector3Dot(d1, d1)); // squared length of segment 1 (a)
+    float l2 = XMVectorGetX(XMVector3Dot(d2, d2)); // squared length of segment 2 (e)
+    float d1r = XMVectorGetX(XMVector3Dot(d1, r)); // (c)
+    float d2r = XMVectorGetX(XMVector3Dot(d2, r)); // (f)
+
+    if (l1 <= epsilon && l2 <= epsilon) {
+      // both segments are points
+      t1 = 0.0f;
+      t2 = 0.0f;
+      c1 = a1;
+      c2 = a2;
+      return;
+    }
+    if (l1 <= epsilon) {
+      // segment 1 is a point
+      t1 = 0.0f;
+      t2 = clamp(d2r / l2, 0.0f, 1.0f);
+    } else if (l2 <= epsilon) {
+      // segment 2 is a point
+      t1 = clamp(-d1r / l1, 0.0, 1.0f);
+      t2 = 0.0f;
+    } else {
+      float b = XMVectorGetX(XMVector3Dot(d1, d2));
+      float denom = l1 * l2 - b * b;
+      if (denom != 0.0f) {
+        // segments are not parallel
+        t1 = clamp((b * d2r - d1r * l2) / denom, 0.0f, 1.0f);
+      } else {
+        t1 = 0.0f;
+      }
+      t2 = (b * t1 + d2r) / l2;
+      if (t2 < 0.0f) {
+        t2 = 0.0f;
+        t1 = clamp(-d1r / l1, 0.0f, 1.0f);
+      } else if (t2 > 1.0f) {
+        t2 = 1.0f;
+        t1 = clamp((b - d1r) / l1, 0.0f, 1.0f);
+      }
+    }
+
+    c1 = a1 + d1 * t1;
+    c2 = a2 + d2 * t2;
+  }
+
+  static inline bool intersect_capsule_capsule(Capsule const & capsule1, Capsule const & capsule2,
+                                               XMVECTOR & p1, XMVECTOR & p2)
+  {
+    float t1;
+    float t2;
+    XMVECTOR c1; // closest point in capsule1
+    XMVECTOR c2; // closest point in capsule2
+    closest_point_segment_segment(capsule1.a, capsule1.b,
+                                  capsule2.a, capsule2.b,
+                                  t1, t2,
+                                  c1, c2);
+    float distance2 = XMVectorGetX(XMVector3Dot(c1 - c2, c1 - c2));
+    float radius = capsule1.radius + capsule2.radius;
+    if (distance2 >= radius * radius)
+      return false;
+
+    float length = XMVectorGetX(XMVector3Length(c1 - c2));
+    XMVECTOR normal = XMVector3NormalizeEst(c2 - c1);
+    printf("length2 %f\n", capsule1.radius - length);
+    p1 = c1 + normal * capsule1.radius;
+    p2 = c2 + normal;
+
+    return true;
+  }
+
+  static const float interval_epsilon = 0.001f;
+
+  static inline bool intersect_moving_sphere_aabb(Sphere const & sphere, XMVECTOR const & direction,
+                                                  float t0, float t1, AABB const & aabb,
+                                                  float & t, XMVECTOR & point)
+  {
+    float mid = (t0 + t1) * 0.5f;
+    XMVECTOR center = sphere.center + direction * mid;
+    float radius = (mid - t0) * XMVectorGetX(XMVector3Length(direction)) + sphere.radius;
+    Sphere bound(center, radius);
+    if (!test_sphere_aabb(bound, aabb, point))
+      return false;
+
+    if (t1 - t0 < interval_epsilon) {
+      t = t0;
+      return true;
+    }
+
+    if (intersect_moving_sphere_aabb(sphere, direction, t0, mid, aabb, t, point))
+      return true;
+
+    return intersect_moving_sphere_aabb(sphere, direction, mid, t1, aabb, t, point);
+  }
+
+  static inline AABB moving_sphere_aabb(Sphere const & sphere, XMVECTOR const & direction)
+  {
+    XMVECTOR min = sphere.center + XMVectorReplicate(-sphere.radius);
+    XMVECTOR max = sphere.center + XMVectorReplicate( sphere.radius);
+
+    min = XMVectorMin(min, min + direction);
+    max = XMVectorMax(max, max + direction);
+    return AABB(min, max);
+  }
+
+  struct state {
+    float t;
+    bool intersected;
+    XMVECTOR intersection_point;
+    XMVECTOR intersection_position;
+  };
+
+  static inline void check_collision(collision::Sphere const & sphere, XMVECTOR const & direction,
+                                     XMVECTOR const & cube_center, float cube_half,
+                                     state & state)
+  {
+    collision::AABB aabb = collision::cube_aabb(cube_center, cube_half);
+    float t;
+    XMVECTOR intersection_point;
+    bool intersected = collision::intersect_moving_sphere_aabb(sphere, direction,
+                                                               0, 1, aabb,
+                                                               t, intersection_point);
+    XMVECTOR intersection_position = sphere.center + direction * t;
+    if (intersected && t < state.t) {
+      state.t = t;
+      state.intersected = true;
+      state.intersection_point = intersection_point;
+      state.intersection_position = intersection_position;
+    }
+  }
+
+  static inline XMVECTOR sphere_collision_response(Sphere const & sphere, XMVECTOR const & direction,
+                                                   XMVECTOR const & intersection_point,
+                                                   XMVECTOR const & intersection_position,
+                                                   XMVECTOR & intersection_normal)
+  {
+    XMVECTOR origin = intersection_point;
+    XMVECTOR normal = XMVector3Normalize(intersection_position - intersection_point);
+    XMVECTOR destination = sphere.center + direction;
+    XMVECTOR distance = XMVector3Dot(destination, normal) - XMVector3Dot(normal, origin);
+    XMVECTOR new_destination = (destination - normal * distance) + normal * sphere.radius;
+    XMVECTOR new_direction = new_destination - intersection_position;
+
+    intersection_normal = normal;
+
+    return new_direction;
+  }
+}

game/include/collision_scene.h

@@ -0,0 +1,10 @@
+#pragma once
+
+namespace collision_scene {
+  void load();
+  void draw();
+  void update(int up, int down, int left, int right,
+              int w, int s, int a, int d,
+              int t, int g, int f, int h,
+              int i, int k, int j, int l);
+}

game/include/data/scenes/book.h

@@ -0,0 +1,3 @@
+namespace book {
+extern collada::types::descriptor const descriptor;
+}

game/include/data/scenes/noodle.h

@@ -0,0 +1,3 @@
+namespace noodle {
+extern collada::types::descriptor const descriptor;
+}

game/include/data/scenes/shadow_test.h

@@ -0,0 +1,3 @@
+namespace shadow_test {
+extern collada::types::descriptor const descriptor;
+}

game/include/data/scenes/ship20.h

@@ -0,0 +1,3 @@
+namespace ship20 {
+  extern collada::types::descriptor const descriptor;
+}

game/include/dds.h

@@ -0,0 +1,127 @@
+//--------------------------------------------------------------------------------------
+// dds.h
+//
+// This header defines constants and structures that are useful when parsing
+// DDS files.  DDS files were originally designed to use several structures
+// and constants that are native to DirectDraw and are defined in ddraw.h,
+// such as DDSURFACEDESC2 and DDSCAPS2.  This file defines similar
+// (compatible) constants and structures so that one can use DDS files
+// without needing to include ddraw.h.
+//--------------------------------------------------------------------------------------
+
+#ifndef _DDS_H_
+#define _DDS_H_
+
+#pragma pack(push,1)
+
+#define DDS_MAGIC 0x20534444 // "DDS "
+
+#define MAKEFOURCC(ch0, ch1, ch2, ch3)  \
+    ((unsigned int)(unsigned char)(ch0) | ((unsigned int)(unsigned char)(ch1) << 8) |  \
+    ((unsigned int)(unsigned char)(ch2) << 16) | ((unsigned int)(unsigned char)(ch3) << 24 ))
+
+struct DDS_PIXELFORMAT
+{
+    unsigned int dwSize;
+    unsigned int dwFlags;
+    unsigned int dwFourCC;
+    unsigned int dwRGBBitCount;
+    unsigned int dwRBitMask;
+    unsigned int dwGBitMask;
+    unsigned int dwBBitMask;
+    unsigned int dwABitMask;
+};
+
+#define DDS_FOURCC      0x00000004  // DDPF_FOURCC
+#define DDS_RGB         0x00000040  // DDPF_RGB
+#define DDS_RGBA        0x00000041  // DDPF_RGB | DDPF_ALPHAPIXELS
+#define DDS_LUMINANCE   0x00020000  // DDPF_LUMINANCE
+#define DDS_ALPHA       0x00000002  // DDPF_ALPHA
+
+const DDS_PIXELFORMAT DDSPF_DXT1 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','1'), 0, 0, 0, 0, 0 };
+
+const DDS_PIXELFORMAT DDSPF_DXT2 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','2'), 0, 0, 0, 0, 0 };
+
+const DDS_PIXELFORMAT DDSPF_DXT3 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','3'), 0, 0, 0, 0, 0 };
+
+const DDS_PIXELFORMAT DDSPF_DXT4 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','4'), 0, 0, 0, 0, 0 };
+
+const DDS_PIXELFORMAT DDSPF_DXT5 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','T','5'), 0, 0, 0, 0, 0 };
+
+const DDS_PIXELFORMAT DDSPF_A8R8G8B8 =
+    { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 32, 0x00ff0000, 0x0000ff00, 0x000000ff, 0xff000000 };
+
+const DDS_PIXELFORMAT DDSPF_A1R5G5B5 =
+    { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x00007c00, 0x000003e0, 0x0000001f, 0x00008000 };
+
+const DDS_PIXELFORMAT DDSPF_A4R4G4B4 =
+    { sizeof(DDS_PIXELFORMAT), DDS_RGBA, 0, 16, 0x00000f00, 0x000000f0, 0x0000000f, 0x0000f000 };
+
+const DDS_PIXELFORMAT DDSPF_R8G8B8 =
+    { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 24, 0x00ff0000, 0x0000ff00, 0x000000ff, 0x00000000 };
+
+const DDS_PIXELFORMAT DDSPF_R5G6B5 =
+    { sizeof(DDS_PIXELFORMAT), DDS_RGB, 0, 16, 0x0000f800, 0x000007e0, 0x0000001f, 0x00000000 };
+
+// This indicates the DDS_HEADER_DXT10 extension is present (the format is in dxgiFormat)
+const DDS_PIXELFORMAT DDSPF_DX10 =
+    { sizeof(DDS_PIXELFORMAT), DDS_FOURCC, MAKEFOURCC('D','X','1','0'), 0, 0, 0, 0, 0 };
+
+#define DDS_HEADER_FLAGS_TEXTURE        0x00001007  // DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH | DDSD_PIXELFORMAT
+#define DDS_HEADER_FLAGS_MIPMAP         0x00020000  // DDSD_MIPMAPCOUNT
+#define DDS_HEADER_FLAGS_VOLUME         0x00800000  // DDSD_DEPTH
+#define DDS_HEADER_FLAGS_PITCH          0x00000008  // DDSD_PITCH
+#define DDS_HEADER_FLAGS_LINEARSIZE     0x00080000  // DDSD_LINEARSIZE
+
+#define DDS_SURFACE_FLAGS_TEXTURE 0x00001000 // DDSCAPS_TEXTURE
+#define DDS_SURFACE_FLAGS_MIPMAP  0x00400008 // DDSCAPS_COMPLEX | DDSCAPS_MIPMAP
+#define DDS_SURFACE_FLAGS_CUBEMAP 0x00000008 // DDSCAPS_COMPLEX
+
+#define DDS_CUBEMAP_POSITIVEX 0x00000600 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEX
+#define DDS_CUBEMAP_NEGATIVEX 0x00000a00 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEX
+#define DDS_CUBEMAP_POSITIVEY 0x00001200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEY
+#define DDS_CUBEMAP_NEGATIVEY 0x00002200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEY
+#define DDS_CUBEMAP_POSITIVEZ 0x00004200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_POSITIVEZ
+#define DDS_CUBEMAP_NEGATIVEZ 0x00008200 // DDSCAPS2_CUBEMAP | DDSCAPS2_CUBEMAP_NEGATIVEZ
+
+#define DDS_CUBEMAP_ALLFACES ( DDS_CUBEMAP_POSITIVEX | DDS_CUBEMAP_NEGATIVEX |\
+                               DDS_CUBEMAP_POSITIVEY | DDS_CUBEMAP_NEGATIVEY |\
+                               DDS_CUBEMAP_POSITIVEZ | DDS_CUBEMAP_NEGATIVEZ )
+
+#define DDS_FLAGS_VOLUME 0x00200000 // DDSCAPS2_VOLUME
+
+typedef struct
+{
+    unsigned int dwSize;
+    unsigned int dwHeaderFlags;
+    unsigned int dwHeight;
+    unsigned int dwWidth;
+    unsigned int dwPitchOrLinearSize;
+    unsigned int dwDepth; // only if DDS_HEADER_FLAGS_VOLUME is set in dwHeaderFlags
+    unsigned int dwMipMapCount;
+    unsigned int dwReserved1[11];
+    DDS_PIXELFORMAT ddspf;
+    unsigned int dwSurfaceFlags;
+    unsigned int dwCubemapFlags;
+    unsigned int dwReserved2[3];
+} DDS_HEADER;
+
+/*
+typedef struct
+{
+    DXGI_FORMAT dxgiFormat;
+    D3D10_RESOURCE_DIMENSION resourceDimension;
+    unsigned int miscFlag;
+    unsigned int arraySize;
+    unsigned int reserved;
+} DDS_HEADER_DXT10;
+*/
+
+#pragma pack(pop)
+
+#endif // _DDS_H

game/include/dds_validate.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "dds.h"
+
+struct DDS_FILE {
+  unsigned int dwMagic;
+  DDS_HEADER header;
+};
+
+DDS_FILE const * dds_validate(void * data, unsigned int size, void ** out_data, int * out_size);

game/include/file.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern char const * g_source_path;
+extern int g_source_path_length;
+
+void * read_file(const char * filename, int * out_size);
+
+#ifdef __cplusplus
+}
+#endif

game/include/flame.h

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace flame {
+  void load_program();
+  void load_texture();
+  void draw(unsigned int light_uniform_buffer, int light_count);
+}

game/include/font.h

@@ -0,0 +1,68 @@
+#pragma once
+
+namespace font {
+
+  struct font_desc {
+    char const * const path;
+    int const texture_width;
+    int const texture_height;
+    int const glyph_width;
+    int const glyph_height;
+  };
+
+  font_desc const terminus[] = {
+    {
+      .path = "font/terminus_128x64_6x12.data",
+      .texture_width = 128,
+      .texture_height = 64,
+      .glyph_width = 6,
+      .glyph_height = 12,
+    },
+    {
+      .path = "font/terminus_128x128_8x16.data",
+      .texture_width = 128,
+      .texture_height = 128,
+      .glyph_width = 8,
+      .glyph_height = 16,
+    },
+    {
+      .path = "font/terminus_256x128_10x18.data",
+      .texture_width = 256,
+      .texture_height = 128,
+      .glyph_width = 10,
+      .glyph_height = 18,
+    },
+    {
+      .path = "font/terminus_256x128_12x24.data",
+      .texture_width = 256,
+      .texture_height = 128,
+      .glyph_width = 12,
+      .glyph_height = 24,
+    },
+    {
+      .path = "font/terminus_256x256_16x32.data",
+      .texture_width = 256,
+      .texture_height = 256,
+      .glyph_width = 16,
+      .glyph_height = 32,
+    },
+  };
+  int const terminus_length = (sizeof (terminus)) / (sizeof (font_desc));
+
+  struct font {
+    font_desc const * desc;
+    unsigned int texture;
+    int stride;
+    struct {
+      float width;
+      float height;
+    } cell;
+  };
+
+  void load_shader();
+  font load_font(font_desc const& desc);
+  void load_fonts(font * const fonts, font_desc const * const descs, int length);
+  int best_font(font_desc const * const descs, int length);
+  void draw_start(font const& font, unsigned int vertex_array_object, unsigned int index_buffer);
+  int draw_string(font const& font, char const * const s, int x, int y);
+}

game/include/font/bitmap.h

@@ -0,0 +1,68 @@
+#pragma once
+
+namespace font::bitmap {
+
+  struct font_desc {
+    char const * const path;
+    int const texture_width;
+    int const texture_height;
+    int const glyph_width;
+    int const glyph_height;
+  };
+
+  font_desc const terminus[] = {
+    {
+      .path = "font/bitmap/terminus_128x64_6x12.data",
+      .texture_width = 128,
+      .texture_height = 64,
+      .glyph_width = 6,
+      .glyph_height = 12,
+    },
+    {
+      .path = "font/bitmap/terminus_128x128_8x16.data",
+      .texture_width = 128,
+      .texture_height = 128,
+      .glyph_width = 8,
+      .glyph_height = 16,
+    },
+    {
+      .path = "font/bitmap/terminus_256x128_10x18.data",
+      .texture_width = 256,
+      .texture_height = 128,
+      .glyph_width = 10,
+      .glyph_height = 18,
+    },
+    {
+      .path = "font/bitmap/terminus_256x128_12x24.data",
+      .texture_width = 256,
+      .texture_height = 128,
+      .glyph_width = 12,
+      .glyph_height = 24,
+    },
+    {
+      .path = "font/bitmap/terminus_256x256_16x32.data",
+      .texture_width = 256,
+      .texture_height = 256,
+      .glyph_width = 16,
+      .glyph_height = 32,
+    },
+  };
+  int const terminus_length = (sizeof (terminus)) / (sizeof (font_desc));
+
+  struct font {
+    font_desc const * desc;
+    unsigned int texture;
+    int stride;
+    struct {
+      float width;
+      float height;
+    } cell;
+  };
+
+  void load_shader();
+  void load_fonts(font * const fonts, font_desc const * const descs, int length);
+  int best_font(font_desc const * const descs, int length);
+  void draw_start(font const& font, unsigned int vertex_array_object, unsigned int index_buffer);
+  int draw_string(font const& font, char const * const s, int x, int y);
+  void set_base_color(float r, float g, float b);
+}

game/include/font/outline.h

@@ -0,0 +1,29 @@
+#pragma once
+
+#include "outline_types.h"
+
+namespace font::outline {
+
+  struct font_desc {
+    char const * const path;
+  };
+
+  font_desc const uncial_antiqua[] = {
+    {
+      .path = "font/outline/uncial_antiqua_36.data",
+    },
+  };
+  int const uncial_antiqua_length = (sizeof (uncial_antiqua)) / (sizeof (font_desc));
+
+  struct font {
+    unsigned int texture;
+    types::font const * font;
+    types::glyph const * glyphs;
+  };
+
+  void load_shader();
+  void load_fonts(font * const fonts, font_desc const * const descs, int length);
+
+  void draw_start(font const& font, unsigned int vertex_array_object, unsigned int index_buffer);
+  int draw_string(font const& font, char const * const s, int x, int y);
+}

game/include/font/outline_types.h

@@ -0,0 +1,49 @@
+// this file is designed to be platform-agnostic
+#pragma once
+
+#include <stdint.h>
+
+namespace font::outline::types {
+
+  // metrics are 26.6 fixed point
+  struct glyph_metrics {
+    int32_t horiBearingX;
+    int32_t horiBearingY;
+    int32_t horiAdvance;
+  } __attribute__ ((packed));
+
+  static_assert((sizeof (struct glyph_metrics)) == ((sizeof (int32_t)) * 3));
+
+  struct glyph_bitmap {
+    uint16_t x;
+    uint16_t y;
+    uint16_t width;
+    uint16_t height;
+  } __attribute__ ((packed));
+
+  static_assert((sizeof (struct glyph_bitmap)) == ((sizeof (uint16_t)) * 4));
+
+  struct glyph {
+    struct glyph_bitmap bitmap;
+    struct glyph_metrics metrics;
+  } __attribute__ ((packed));
+
+  static_assert((sizeof (struct glyph)) == ((sizeof (struct glyph_bitmap)) + (sizeof (struct glyph_metrics))));
+
+  struct font {
+    uint32_t first_char_code;
+    uint32_t last_char_code;
+    struct face_metrics {
+      int32_t height; // 26.6 fixed point
+      int32_t max_advance; // 26.6 fixed point
+    } face_metrics;
+    uint16_t glyph_count;
+    uint16_t _texture_stride;
+    uint16_t texture_width;
+    uint16_t texture_height;
+    uint32_t max_z_curve_ix;
+  } __attribute__ ((packed));
+
+  static_assert((sizeof (struct font)) == ((sizeof (uint32_t)) * 7));
+
+}

game/include/geometry_buffer.h

@@ -0,0 +1,80 @@
+#pragma once
+
+#include <assert.h>
+
+#include "glad/gl.h"
+
+#include "window.h"
+
+template <int render_target_count>
+struct geometry_buffer {
+  unsigned int framebuffer;
+  unsigned int target[render_target_count]; // textures
+  unsigned int renderbuffer;
+  int initialized;
+  int width;
+  int height;
+};
+
+struct target_type {
+  GLint internal_format;
+  GLenum attachment;
+};
+
+struct target_name {
+  enum {
+    POSITION = 0,
+    NORMAL = 1,
+    COLOR = 2,
+    BLOCK = 3,
+  };
+};
+
+template <int render_target_count>
+void init_geometry_buffer(geometry_buffer<render_target_count>& geometry_buffer, target_type const * const types)
+{
+  int width = window::width;
+  int height = window::height;
+
+  if ((geometry_buffer.initialized == 1) && (width == geometry_buffer.width) && (height == geometry_buffer.height)) {
+    return;
+  }
+
+  if (geometry_buffer.initialized) {
+    glDeleteFramebuffers(1, &geometry_buffer.framebuffer);
+    glDeleteTextures(render_target_count, geometry_buffer.target);
+    glDeleteRenderbuffers(1, &geometry_buffer.renderbuffer);
+  }
+  glGenFramebuffers(1, &geometry_buffer.framebuffer);
+  glBindFramebuffer(GL_DRAW_FRAMEBUFFER, geometry_buffer.framebuffer);
+
+  glGenTextures(render_target_count, geometry_buffer.target);
+  for (int i = 0; i < render_target_count; i++) {
+    glBindTexture(GL_TEXTURE_2D, geometry_buffer.target[i]);
+    glTexImage2D(GL_TEXTURE_2D, 0, types[i].internal_format, width, height, 0, GL_RGBA, GL_FLOAT, NULL);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+    glFramebufferTexture2D(GL_DRAW_FRAMEBUFFER, types[i].attachment, GL_TEXTURE_2D, geometry_buffer.target[i], 0);
+  }
+  static_assert(render_target_count <= 8);
+  static GLenum const attachments[8] = {
+    GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2, GL_COLOR_ATTACHMENT3,
+    GL_COLOR_ATTACHMENT4, GL_COLOR_ATTACHMENT5, GL_COLOR_ATTACHMENT6, GL_COLOR_ATTACHMENT7,
+  };
+  glDrawBuffers(render_target_count, attachments); // bound to GL_DRAW_FRAMEBUFFER
+
+  glGenRenderbuffers(1, &geometry_buffer.renderbuffer);
+  glBindRenderbuffer(GL_RENDERBUFFER, geometry_buffer.renderbuffer);
+  glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH_COMPONENT, width, height);
+  glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_DEPTH_ATTACHMENT, GL_RENDERBUFFER, geometry_buffer.renderbuffer);
+
+  assert(glCheckFramebufferStatus(GL_DRAW_FRAMEBUFFER) == GL_FRAMEBUFFER_COMPLETE);
+
+  glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
+
+  geometry_buffer.initialized = 1;
+  geometry_buffer.width = width;
+  geometry_buffer.height = height;
+}

game/include/hash.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include <stdint.h>
+
+uint32_t
+inthash(const int32_t key);

game/include/hud.h

@@ -0,0 +1,6 @@
+#pragma once
+
+namespace hud {
+
+  void draw();
+}

game/include/lighting.h

@@ -0,0 +1,14 @@
+#pragma once
+
+namespace lighting {
+
+  struct light_parameters {
+    float quadratic;
+    float linear;
+  };
+
+  extern light_parameters global;
+
+  void load();
+  void draw(unsigned int light_uniform_buffer, int light_count);
+}

game/include/line_art.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include "directxmath/directxmath.h"
+
+namespace line_art {
+  void load();
+
+  void load_ray_vertex_buffer(XMVECTOR const & a, XMVECTOR const & b);
+
+  XMMATRIX view();
+  XMMATRIX projection();
+
+  void set_transform(XMMATRIX const & transform);
+  void draw_line(XMMATRIX const & transform, XMVECTOR const & a, XMVECTOR const & b);
+  void draw_sphere(XMMATRIX const & transform, XMVECTOR const & center, float radius);
+  void draw_capsule(XMMATRIX const & transform, XMVECTOR a, XMVECTOR b, float radius);
+  void draw_cube(XMMATRIX const & transform, XMVECTOR const & position);
+  void scene_start(XMMATRIX const & transform);
+  void draw_grid(XMMATRIX const & transform);
+  void set_color(float r, float g, float b);
+  void set_colorv(XMFLOAT3 const & value);
+}

game/include/lua_api.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  int draw_font_start();
+  int draw_font(int font_ix, char const * text, int x, int y);
+
+  int draw_font(int font_ix, char const * text, int x, int y);
+  void draw_font_set_base_color(float r, float g, float b);
+
+  void draw_line_quad_start();
+  void draw_line(int x1, int y1, int x2, int y2);
+  void draw_set_color(float r, float g, float b);
+  void draw_quad(int x1, int y1, int x2, int y2,
+                 int x3, int y3, int x4, int y4);
+
+  void set_sphere(float x, float y, float vx, float vy);
+#ifdef __cplusplus
+}
+#endif

game/include/minecraft.h

@@ -0,0 +1,10 @@
+#pragma once
+
+#include "world/world.h"
+
+namespace minecraft {
+  extern world::state * current_world;
+
+  void load();
+  void draw();
+}

game/include/minecraft_data.inc

@@ -0,0 +1,22 @@
+short index_buffer_configuration_offsets[] = {
+    0,    0,    6,   12,   24,   30,   42,   54,
+   72,   78,   90,  102,  120,  132,  150,  168,
+  192,  198,  210,  222,  240,  252,  270,  288,
+  312,  324,  342,  360,  384,  402,  426,  450,
+  480,  486,  498,  510,  528,  540,  558,  576,
+  600,  612,  630,  648,  672,  690,  714,  738,
+  768,  780,  798,  816,  840,  858,  882,  906,
+  936,  954,  978, 1002, 1032, 1056, 1086, 1116,
+};
+// generated from
+struct {
+  short offset;
+  short count;
+} index_buffer_custom_offsets[] = {
+  {1152, 3180}, // candle.obj
+  {4332, 1584}, // custom_mushroom.obj
+  {5916, 36}, // fence.obj
+  {5952, 24}, // stair.obj
+  {5976, 12}, // tall_grass.obj
+  {5988, 2082}, // wall_torch.obj
+};

game/include/new.h

@@ -0,0 +1,9 @@
+#pragma once
+
+#include <stdlib.h>
+
+template <typename T>
+T * New(int elements)
+{
+  return (T *)aligned_alloc(16, (sizeof (T)) * elements);
+}

game/include/non_block.h

@@ -0,0 +1,13 @@
+#pragma once
+
+namespace non_block {
+  extern unsigned int index_buffer;
+  extern unsigned int per_vertex_buffer;
+  extern unsigned int vertex_array_object;
+
+  void load_index_buffer();
+  void load_per_vertex_buffer();
+  void load_vertex_attributes();
+  void load_program();
+  void draw();
+}

game/include/opengl.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  unsigned int compile_from_files(const char * vertex_path,
+                                  const char * geometry_path,
+                                  const char * fragment_path);
+
+  unsigned int load_uniform_buffer(char const * const path, int * out_size);
+
+  void load_dds_texture_2D(char const * const path);
+
+#ifdef __cplusplus
+}
+#endif

game/include/pixel_line_art.h

@@ -0,0 +1,12 @@
+#pragma once
+
+namespace pixel_line_art {
+
+  void load();
+
+  void draw_line_quad_start();
+  void draw_line(int x1, int y1, int x2, int y2);
+  void draw_set_color(float r, float g, float b);
+  void draw_quad(int x1, int y1, int x2, int y2,
+                 int x3, int y3, int x4, int y4);
+}

game/include/test.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  void load(const char * source_path);
+  void draw();
+  void love2d_state_load();
+  void love2d_state_restore();
+  void update_keyboard(int up, int down, int left, int right,
+                       int w, int s, int a, int d,
+                       int t, int g, int f, int h,
+                       int i, int k, int j, int l);
+  void update_mouse(int x, int y);
+  void update_joystick(int joystick_index,
+                       float lx, float ly, float rx, float ry, float tl, float tr,
+                       int up, int down, int left, int right,
+                       int a, int b, int x, int y,
+                       int leftshoulder, int rightshoulder,
+                       int start);
+  void update(float time);
+
+#ifdef __cplusplus
+}
+#endif

game/include/view.h

@@ -0,0 +1,49 @@
+#pragma once
+
+#include "directxmath/directxmath.h"
+
+namespace view {
+  struct view_state {
+    // positions
+    XMVECTOR eye;
+    XMVECTOR at;
+
+    // vectors
+    XMVECTOR up;
+    XMVECTOR forward;
+    XMVECTOR normal; // cross(forward, up)
+    XMVECTOR direction; // rotationaxis(forward, pitch)
+
+    // angles
+    float fov;
+    float pitch;
+
+    // transforms
+    XMMATRIX projection_transform;
+    XMMATRIX view_transform;
+    XMMATRIX transform;
+
+    // transform views
+    XMFLOAT4X4 float_transform;
+  };
+
+  extern view_state state;
+
+  namespace first_person {
+    void apply_transform(float forward, float strafe, float elevation,
+                         float delta_yaw, float delta_pitch);
+  }
+
+  namespace third_person {
+    XMVECTOR apply_transform(float forward, float strafe, float elevation,
+                             float delta_yaw, float delta_pitch);
+  }
+
+  XMVECTOR get_normal();
+  XMVECTOR get_direction();
+  void apply_fov(float delta);
+  void update_transforms();
+  void load();
+
+  const float at_distance = 10;
+}

game/include/window.h

@@ -0,0 +1,14 @@
+#pragma once
+
+namespace window {
+  extern float width;
+  extern float height;
+}
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+  void update_window(int width, int height);
+#ifdef __cplusplus
+}
+#endif

game/include/world/entry_table.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <stdint.h>
+#include <assert.h>
+
+namespace world::entry_table {
+
+  typedef struct global_entry {
+    int global_index;
+    uint8_t block_id;
+    uint8_t block_data;
+    uint16_t _padding;
+  } global_entry_t;
+  static_assert((sizeof (global_entry_t)) == 8);
+
+  typedef uint32_t (hash_func_t)(const int32_t key);
+
+  void load_entry_table(char const * const path,
+                        global_entry_t ** out_entry_table,
+                        int * out_entry_table_length,
+                        hash_func_t * hash_func);
+
+  global_entry_t * const world_lookup(hash_func_t * hash_func,
+                                      global_entry_t * entry_table,
+                                      int entry_table_length,
+                                      int x, int y, int z);
+}

game/include/world/inthash.h

@@ -0,0 +1,15 @@
+#pragma once
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+  uint32_t love2dworld_hash(const int32_t key);
+  uint32_t grandlecturn_hash(const int32_t key);
+  uint32_t midnightmeadow_hash(const int32_t key);
+
+#ifdef __cplusplus
+}
+#endif

game/include/world/world.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "world/entry_table.h"
+
+namespace world {
+  struct vtx_cfg {
+    const char * vtx;
+    const char * cfg;
+  };
+
+  struct descriptor {
+    int const region_count;
+    vtx_cfg const * const vertex_paths;
+    char const * const entry_table_path;
+    char const * const lights_path;
+    entry_table::hash_func_t * hash_func;
+  };
+
+  struct world_id {
+    enum {
+      LOVE2DWORLD = 0,
+      GRANDLECTURN = 1,
+      MIDNIGHTMEADOW = 2,
+    };
+  };
+
+  // also update index_buffer_custom_offsets in include/minecraft_data.inc
+  const int custom_block_types = 6;
+  const int instance_cfg_length = 64 + custom_block_types;
+
+  struct instance_cfg_entry {
+    int count;
+    int offset;
+  };
+
+  struct region {
+    unsigned int per_instance_vertex_buffer;
+    instance_cfg_entry instance_cfg[instance_cfg_length];
+  };
+
+  struct state {
+    world::descriptor const * descriptor;
+    world::region * region; // malloc region_count
+    entry_table::global_entry_t * entry_table;
+    unsigned int light_uniform_buffer;
+    int light_count;
+    int entry_table_length;
+  };
+
+  extern descriptor const descriptors[];
+  extern int const descriptors_length;
+}