From 7a538295cd195f1baf40f4f5a2f736f13be8b94b Mon Sep 17 00:00:00 2001
From: Zack Buhman <zack@buhman.org>
Date: Fri, 1 Aug 2025 01:23:26 -0500
Subject: [PATCH] speedrun edition

---
 src/demo/lizard/main.cpp  | 35 ++++++++++++++++++++++++++++++++++-
 src/demo/lizard/main.hpp  |  3 +++
 src/platform/font.cpp     |  4 ++--
 src/platform/graphics.cpp |  2 +-
 4 files changed, 40 insertions(+), 4 deletions(-)

diff --git a/src/demo/lizard/main.cpp b/src/demo/lizard/main.cpp
index 592c88d..ff8a6ca 100644
--- a/src/demo/lizard/main.cpp
+++ b/src/demo/lizard/main.cpp
@@ -10,6 +10,9 @@
 
 #include "texture/igh25_box_top_32.data.h"
 
+#include "sh7091/sh7091.hpp"
+#include "sh7091/sh7091_bits.hpp"
+
 #include "xm_player/playlist.hpp"
 
 #include "assert.h"
@@ -63,7 +66,10 @@ namespace demo {
 
   mat4x4 lizard::init()
   {
+    button_press = false;
+    y_press_count = 0;
     platform_touch_count = 0;
+    total_tick = 0;
 
     vx = -pi / 3.5;
     vy = -pi / 8;
@@ -98,6 +104,10 @@ namespace demo {
 
   void lizard::update()
   {
+    if (end_platform->touched) {
+      sh7091.TMU.TSTR &= (~tmu::tstr::str1::counter_start) & 0xff; // stop TCNT1
+    }
+
     lizard_rotation *= 0.8;
 
     lizard_turning_frame += lizard_rotation * 5;
@@ -149,6 +159,7 @@ namespace demo {
 
   void lizard::y()
   {
+    y_press_count += 1;
     lizard_velocity = {0, 0, 0};
     if (last_platform1 == nullptr) {
       lizard_position = {2.5, 1, 2.5};
@@ -164,6 +175,18 @@ namespace demo {
 
   void lizard::a()
   {
+    if (!button_press) {
+      button_press = true;
+
+      sh7091.TMU.TSTR &= (~tmu::tstr::str1::counter_start) & 0xff; // stop TCNT1
+      sh7091.TMU.TOCR = tmu::tocr::tcoe::tclk_is_external_clock_or_input_capture;
+      sh7091.TMU.TCR1 = tmu::tcr1::tpsc::p_phi_1024; // 1024 / 50MHz = 20.48 μs
+      sh7091.TMU.TCOR1 = 0xffff'ffff;
+      sh7091.TMU.TCNT1 = 0xffff'ffff;
+      sh7091.TMU.TSTR |= tmu::tstr::str1::counter_start;
+
+      total_tick = 0xffff'ffff;
+    }
     //lizard_velocity.y -= 0.01;
     if (collided) {
       lizard_velocity.y = 30;
@@ -280,7 +303,17 @@ namespace demo {
     font::ter_u12n.draw_string(writer, status_p, "score:", 0xffffffff);
     //font::ter_u12n.draw_float(writer, status_p, (float)last_drawn_frame, 0xffffffff, 10);
     status_p.x += font::ter_u12n.hori_advance * 7;
-    font::ter_u12n.draw_int(writer, status_p, (float)platform_touch_count, 0xffffffff, 4);
+    font::ter_u12n.draw_int(writer, status_p, platform_touch_count, 0xffffffff, 4);
+
+    vec3 status_q = vec3(framebuffer::framebuffer.px_width - font::ter_u12n.hori_advance * 15, framebuffer::framebuffer.px_height - 24, 10);
+    font::ter_u12n.draw_string(writer, status_q, "y presses:", 0xffffffff);
+    status_q.x += font::ter_u12n.hori_advance * 11;
+    font::ter_u12n.draw_int(writer, status_q, y_press_count, 0xffffffff, 0);
+
+    vec3 status_r = vec3(framebuffer::framebuffer.px_width - font::ter_u12n.hori_advance * 15, framebuffer::framebuffer.px_height - (24 + font::ter_u12n.height), 10);
+    font::ter_u12n.draw_string(writer, status_r, "time:", 0xffffffff);
+    float time = (float)(0xffffffff - sh7091.TMU.TCNT1) * (0.020480f / 1000.f);
+    font::ter_u12n.draw_float(writer, status_r, time, 0xffffffff, 12);
 
     const int height_2 = (font::ter_u32n.height * (emulator_speech_lines + 2)) >> 1;
     const int y = framebuffer_height_2 - height_2;
diff --git a/src/demo/lizard/main.hpp b/src/demo/lizard/main.hpp
index 343e6c3..6f30bef 100644
--- a/src/demo/lizard/main.hpp
+++ b/src/demo/lizard/main.hpp
@@ -17,7 +17,10 @@ namespace demo {
     float lizard_walking_frame;
     float lizard_turning_frame;
     int platform_touch_count;
+    int y_press_count;
     int end_platform_tick;
+    int total_tick;
+    bool button_press;
 
     int last_cover_texture_offset;
     float cover_ix_transition;
diff --git a/src/platform/font.cpp b/src/platform/font.cpp
index 4e8955d..442c78d 100644
--- a/src/platform/font.cpp
+++ b/src/platform/font.cpp
@@ -83,10 +83,10 @@ namespace font {
     int32_t whole = num;
     offset += unparse_base10_unsigned(&s[offset], whole, 0, 0);
     s[offset++] = '.';
-    int32_t fraction = (int32_t)((num - (float)whole) * 1000000000.0);
+    int32_t fraction = (int32_t)((num - (float)whole) * 10.0);
     if (fraction < 0)
       fraction = -fraction;
-    offset += unparse_base10_unsigned(&s[offset], fraction, 9, '0');
+    offset += unparse_base10_unsigned(&s[offset], fraction, 1, '0');
     return offset;
   }
 
diff --git a/src/platform/graphics.cpp b/src/platform/graphics.cpp
index b2ae27a..3018ff1 100644
--- a/src/platform/graphics.cpp
+++ b/src/platform/graphics.cpp
@@ -224,7 +224,7 @@ namespace graphics {
         if (last[port_ix].a != a && a) current_scene->a();
         if (b) current_scene->b();
         if (last[port_ix].x != x && x) current_scene->x();
-        if (y) current_scene->y();
+        if (last[port_ix].y != y && y) current_scene->y();
 
         if (ra) current_scene->ra();
         if (la) current_scene->la();