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xormod
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better timings

main
Henri Vasserman 2025-01-10 18:34:44 +02:00
parent d45ae565a7
commit 43855a13d7
1 changed files with 18 additions and 14 deletions
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32
xormod.c
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@ -5,8 +5,6 @@
#include "platform.h"
#include "types.h"
#include <SDL3/SDL_mouse.h>
#include <SDL3/SDL_render.h>
#include <stdio.h>
#include <inttypes.h>
#include <SDL3/SDL.h>
@ -29,8 +27,6 @@ int main() {
SDL_GetWindowSize(window, &w, &h);
SDL_Renderer *rend = SDL_CreateRenderer(window, NULL);
SDL_SetRenderVSync(rend, 1);
Field f;
Field_init(&f, w, h);
@ -40,6 +36,10 @@ int main() {
int running = 1;
int fullscreen = 0;
int vsync = 0;
double avg_delta = 0;
SDL_SetRenderVSync(rend, vsync);
#ifdef NDEBUG
int debug = 0;
@ -51,19 +51,21 @@ int main() {
Uint64 ticks = SDL_GetTicks();
Uint64 delta = ticks - last;
last = ticks;
avg_delta = 0.75 * avg_delta + 0.25 * (double) delta;
int speed = (int)(16 * avg_delta / 16.667); // 16 pixels per update @ 60 fps
const bool *keys = SDL_GetKeyboardState(NULL);
if (keys[SDL_SCANCODE_LEFT] || keys[SDL_SCANCODE_A]) {
f.offset.x -= delta;
f.offset.x -= speed;
}
if (keys[SDL_SCANCODE_RIGHT] || keys[SDL_SCANCODE_D]) {
f.offset.x += delta;
f.offset.x += speed;
}
if (keys[SDL_SCANCODE_UP] || keys[SDL_SCANCODE_W]) {
f.offset.y -= delta;
f.offset.y -= speed;
}
if (keys[SDL_SCANCODE_DOWN] || keys[SDL_SCANCODE_S]) {
f.offset.y += delta;
f.offset.y += speed;
}
SDL_Event event;
@ -82,11 +84,8 @@ int main() {
case SDLK_ESCAPE:
case SDLK_Q: running = 0; break;
case SDLK_G: debug ^= 1; break;
case SDLK_F: {
fullscreen ^= 1;
SDL_SetWindowFullscreen(window, fullscreen);
break;
}
case SDLK_F: SDL_SetWindowFullscreen(window, fullscreen ^= 1); break;
case SDLK_V: SDL_SetRenderVSync(rend, vsync ^= 1); break;
}
SDL_HideCursor();
break;
@ -121,7 +120,8 @@ int main() {
draw_text(rend, ACCEL_PLATFORM_STR, sizeof(ACCEL_PLATFORM_STR), RC(1,1), 255, 255, 255);
size_t len = snprintf(buf, sizeof(buf),
"off.x: %d, off.y: %d, \xEBT: %02" PRIu64, f.offset.x, f.offset.y, delta);
"off.x: %d, off.y: %d, vsync: %s, \xEBT: %.3f, %.1fFPS, speed: %02d",
f.offset.x, f.offset.y, vsync ? "ON" : "OFF", avg_delta, 1000.0 / avg_delta, speed);
draw_text(rend, buf, len, RC(2, 1), 255, 255, 255);
char *q[] = {"TL", "TR", "BL", "BR"};
@ -134,6 +134,10 @@ int main() {
}
SDL_RenderPresent(rend);
if (!vsync && avg_delta < 8.0) {
SDL_Delay(8.0 - avg_delta);
}
}
SDL_DestroyRenderer(rend);