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scenery: make render distance come from a define

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This commit is contained in:
veclavtalica 2024-11-03 23:09:10 +03:00
parent d794ca862f
commit 4be27816c2
1 changed files with 7 additions and 4 deletions
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11
apps/demos/scenery/scenes/ingame.c
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@ -60,11 +60,14 @@ static void ingame_tick(State *state) {
input_mouse_captured(scn->mouse_captured); input_mouse_captured(scn->mouse_captured);
#define TERRAIN_FREQUENCY 0.1f #define TERRAIN_FREQUENCY 0.1f
#define TERRAIN_DISTANCE 64
for (int ly = 128; ly--;) { float const half_terrain_distance = (float)TERRAIN_DISTANCE / 2;
for (int lx = 128; lx--;) {
float x = SDL_truncf(scn->pos.x + 64 - (float)lx); for (int ly = TERRAIN_DISTANCE; ly--;) {
float y = SDL_truncf(scn->pos.z + 64 - (float)ly); for (int lx = TERRAIN_DISTANCE; lx--;) {
float x = SDL_truncf(scn->pos.x + half_terrain_distance - (float)lx);
float y = SDL_truncf(scn->pos.z + half_terrain_distance - (float)ly);
float d0 = stb_perlin_noise3((float)x * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6; float d0 = stb_perlin_noise3((float)x * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;
float d1 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6; float d1 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 3 - 6;