emulator: add 30 second countdown

src/font.cpp

@@ -5,6 +5,7 @@
 #include "font.hpp"
 
 #include "math/float_types.hpp"
+#include "printf/unparse.h"
 
 namespace font {
 
@@ -109,4 +110,19 @@ void draw_string(ta_parameter_writer& writer,
   }
 }
 
+void draw_integer(ta_parameter_writer& writer,
+                  const font& face,
+                  int n,
+                  int length, int fill,
+                  float x, float y, float z,
+                  int base_color)
+{
+  char buf[16];
+
+  int len = unparse_base10(buf, n, length, fill);
+  buf[len] = 0;
+
+  draw_string(writer, face, buf, x, y, z, base_color);
+}
+
 }

src/font.hpp

@@ -37,4 +37,11 @@ namespace font {
                    const char * s,
                    float x, float y, float z,
                    int base_color);
+
+  void draw_integer(ta_parameter_writer& writer,
+                    const font& face,
+                    int n,
+                    int length, int fill,
+                    float x, float y, float z,
+                    int base_color);
 }

src/main.cpp

@@ -127,8 +127,9 @@ void main()
 
   if (emulator) {
     scene::emulator::current_message_id = scene::emulator::counterfeit;
-    //scene::scene_init(scene::id::emulator);
+    scene::scene_init(scene::id::emulator);
-    scene::scene_init(scene::id::tracker);
+    //scene::scene_init(scene::id::tracker);
+    //scene::scene_init(scene::id::logo);
   } else {
     scene::scene_init(scene::id::logo);
   }

src/scene/emulator/scene.cpp

@@ -95,6 +95,8 @@ namespace scene::emulator {
 
   int current_message_id = 0;
 
+  static int tick = 0;
+
   void draw_title(ta_parameter_writer& writer, int color)
   {
     const font::font& face = font::fonts[font::font::ter_u32n];
@@ -124,6 +126,11 @@ namespace scene::emulator {
       draw_string(writer, face, s, x, y, 0.1, base_color);
       y += face.height;
     }
+
+    float tick_div = framebuffer.px_height == 480 ? (1.f / 60.f) : (1.f / 120.f);
+    int n = 30.000 - (tick * tick_div);
+    y += face.height;
+    draw_integer(writer, face, n, 0, 0, x, y, 0.1, base_color);
   }
 
   void transfer(ta_multiwriter& multi)
@@ -150,6 +157,8 @@ namespace scene::emulator {
                 {0, 0, 0.1},
                 {0, 0, 0.1},
                 0x0);
+
+    tick += 1;
   }
 
   void init()
@@ -165,6 +174,14 @@ namespace scene::emulator {
 
   int done()
   {
+    float tick_mul = framebuffer.px_height == 480 ? 60 : 120;
+
+    if (tick >= (30.000 * tick_mul)) {
+      int scene_id = ::scene::id::logo;
+      printf("scene transition to logo %d\n", scene_id);
+      return scene_id;
+    }
+
     return -1;
   }
 }