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perlin2d, sample terrain render

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This commit is contained in:
veclav talica
2024-07-30 19:36:59 +03:00
parent a4cb50687e
commit 94ce701dae
8 changed files with 117 additions and 15 deletions
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39
apps/testgame/scenes/ingame.c
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@@ -11,7 +11,8 @@ static void ingame_tick(struct state *state) {
world_drawdef(scn->world);
player_calc(scn->player);
static t_camera cam = { .pos = { 0, 0, 1 }, .target = { 0, 0, -1 }, .up = { 0, 1, 0 }, .fov = (float)M_PI_2 };
static t_camera cam = { .pos = { 32, 0, 1 }, .up = { 0, 1, 0 }, .fov = (float)M_PI_2 };
cam.target = m_vec_norm(((t_fvec3){ -1, 0, 1 }));
if (input_is_action_pressed(&ctx.input, "player_left"))
cam.pos.x -= 0.01f;
@@ -42,21 +43,29 @@ static void ingame_tick(struct state *state) {
set_camera(&cam);
unfurl_triangle("/assets/big-violet.png",
(t_fvec3){ -1, -1, 0 },
(t_fvec3){ 1, -1, 0 },
(t_fvec3){ 1, 1, 0 },
(t_shvec2){ 0, 2048 },
(t_shvec2){ 2048, 2048 },
(t_shvec2){ 2048, 0 });
for (int y = 64; --y;)
for (int x = 64; --x;) {
float d0 = sample_perlin_2d((t_fvec2){x, y}, 0.2, 5) * 8 - 6;
float d1 = sample_perlin_2d((t_fvec2){x + 1, y}, 0.2, 5) * 8 - 6;
float d2 = sample_perlin_2d((t_fvec2){x + 1, y - 1}, 0.2, 5) * 8 - 6;
float d3 = sample_perlin_2d((t_fvec2){x, y - 1}, 0.2, 5) * 8 - 6;
unfurl_triangle("/assets/big-violet.png",
(t_fvec3){ 1, 1, 0 },
(t_fvec3){ -1, 1, 0 },
(t_fvec3){ -1, -1, 0 },
(t_shvec2){ 2048, 0 },
(t_shvec2){ 0, 0 },
(t_shvec2){ 0, 2048 });
unfurl_triangle("/assets/grass.gif",
(t_fvec3){ x, d0, y },
(t_fvec3){ x + 1, d1, y },
(t_fvec3){ x, d3, y - 1 },
(t_shvec2){ 0, 768 },
(t_shvec2){ 1024, 768 },
(t_shvec2){ 1024, 0 });
unfurl_triangle("/assets/grass.gif",
(t_fvec3){ x + 1, d1, y },
(t_fvec3){ x + 1, d2, y - 1 },
(t_fvec3){ x, d3, y - 1 },
(t_shvec2){ 1024, 0 },
(t_shvec2){ 0, 0 },
(t_shvec2){ 0, 768 });
}
}