diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/main.c | 70 |
1 files changed, 41 insertions, 29 deletions
@@ -24,10 +24,8 @@ main(void) struct map *map; struct area *a; SDL_Color colors[256]; - struct map_exit *e; int i; - Uint32 start, end; - int x, y; + struct map_exit *e; init(); vp = init_viewport(240, 160, 8); @@ -61,29 +59,38 @@ main(void) render_area_to_viewport(a, vp); { - float step; + Uint32 t; + double x; int y_start, y_end; - for (step = 0.0; step < 12.57; step += 0.006136) { + + for (t = 0; t <= 2880; t += 5) { for (i = 0; i < 256; ++i) { /* + * t => [0 .. INF] + * t[0 .. 1440] => x[0, 3.14159] + * x = (t % 1440) * 3.14159 / 720 + * y => [y_start, y_end] * ((cos(x) + 1) / 2) => [0,1] * y = ((cos(x) + 1) / 2) * * (y_end - y_start) + y_start */ + x = t % 1440; + x = x * 3.14159 / 720; + y_start = (i % 8) * 36; - y_end = y_start / 4; - colors[i].r = ((cos(step) + 1) / 2) * + y_end = y_start * 0.25; + colors[i].r = ((cos(x) + 1) / 2) * (y_end - y_start) + y_start; y_start = (i % 64 / 8) * 36; - y_end = y_start / 4; - colors[i].g = ((cos(step) + 1) / 2) * + y_end = y_start * 0.25; + colors[i].g = ((cos(x) + 1) / 2) * (y_end - y_start) + y_start; y_start = (i / 64) * 85; - y_end = y_start / 4; - colors[i].b = ((cos(step) + 1) / 2) * + y_end = y_start * 0.375; + colors[i].b = ((cos(x) + 1) / 2) * (y_end - y_start) + y_start; } if (!SDL_SetPalette(vp->screen, SDL_LOGPAL, colors, 0, 256)) { @@ -93,7 +100,6 @@ main(void) SDL_Delay(10); } } - SDL_Delay(1000); /* Demo */ for (i = 0; i < 256; ++i) { @@ -104,23 +110,29 @@ main(void) if (!SDL_SetPalette(vp->screen, SDL_LOGPAL, colors, 0, 256)) { warn("Failed to set palette"); } - i = 0; - start = SDL_GetTicks(); - x = 19 * map->tilewidth ; - y = 38 * map->tileheight; - for (; y > 34 * map->tileheight; y -= 2) DEMO(); /* Up */ - for (; x < 23 * map->tilewidth ; x += 2) DEMO(); /* Right */ - for (; y > 16 * map->tileheight; y -= 2) DEMO(); /* Up */ - for (; x > 15 * map->tilewidth ; x -= 2) DEMO(); /* Left */ - for (; y < 25 * map->tileheight; y += 2) DEMO(); /* Down */ - for (; x > 4 * map->tilewidth ; x -= 2) DEMO(); /* Left */ - for (; y > 18 * map->tileheight; y -= 2) DEMO(); /* Up */ - for (; x < 9 * map->tilewidth ; x += 2) DEMO(); /* Right */ - for (; y > 5 * map->tileheight; y -= 2) DEMO(); /* Up */ - for (; x < 15 * map->tilewidth ; x += 2) DEMO(); /* Right */ - for (; y > 1 * map->tileheight; y -= 2) DEMO(); /* Up */ - end = SDL_GetTicks(); - debug("Rendered %d frames in %d milliseconds", i, end - start); + + { + Uint32 start, end; + int x, y; + + i = 0; + start = SDL_GetTicks(); + x = 19 * map->tilewidth ; + y = 38 * map->tileheight; + for (; y > 34 * map->tileheight; y -= 2) DEMO(); /* Up */ + for (; x < 23 * map->tilewidth ; x += 2) DEMO(); /* Right */ + for (; y > 16 * map->tileheight; y -= 2) DEMO(); /* Up */ + for (; x > 15 * map->tilewidth ; x -= 2) DEMO(); /* Left */ + for (; y < 25 * map->tileheight; y += 2) DEMO(); /* Down */ + for (; x > 4 * map->tilewidth ; x -= 2) DEMO(); /* Left */ + for (; y > 18 * map->tileheight; y -= 2) DEMO(); /* Up */ + for (; x < 9 * map->tilewidth ; x += 2) DEMO(); /* Right */ + for (; y > 5 * map->tileheight; y -= 2) DEMO(); /* Up */ + for (; x < 15 * map->tilewidth ; x += 2) DEMO(); /* Right */ + for (; y > 1 * map->tileheight; y -= 2) DEMO(); /* Up */ + end = SDL_GetTicks(); + debug("Rendered %d frames in %d milliseconds", i, end - start); + } quit(0); |