From 14a9915ce92ebce4c59580da0139f381077f522b Mon Sep 17 00:00:00 2001 From: veclavtalica Date: Mon, 19 Aug 2024 19:19:22 +0300 Subject: [PATCH] remove procgen, use stb_perlin --- CMakeLists.txt | 1 - apps/testgame/game.c | 2 +- apps/testgame/scenes/ingame.c | 17 ++++++--- townengine/game_api.h | 1 - townengine/procgen.h | 6 --- townengine/procgen/perlin.h | 10 ----- townengine/procgen/perlin2d.c | 70 ----------------------------------- townengine/util.h | 2 +- 8 files changed, 14 insertions(+), 95 deletions(-) delete mode 100644 townengine/procgen.h delete mode 100644 townengine/procgen/perlin.h delete mode 100644 townengine/procgen/perlin2d.c diff --git a/CMakeLists.txt b/CMakeLists.txt index 242969d..e32d637 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -48,7 +48,6 @@ set(TOWNENGINE_SOURCE_FILES townengine/text.c townengine/text.h townengine/camera.c townengine/camera.h townengine/textures/textures.c - townengine/procgen/perlin2d.c ${SYSTEM_SOURCE_FILES} ) diff --git a/apps/testgame/game.c b/apps/testgame/game.c index 6c9a51a..8c6c392 100644 --- a/apps/testgame/game.c +++ b/apps/testgame/game.c @@ -44,7 +44,7 @@ void game_tick(void) { input_bind_action_scancode(&ctx.input, "ui_accept", SDL_SCANCODE_RETURN); input_add_action(&ctx.input, "mouse_capture_toggle"); - input_bind_action_scancode(&ctx.input, "mouse_capture_toggle", SDL_SCANCODE_END); + input_bind_action_scancode(&ctx.input, "mouse_capture_toggle", SDL_SCANCODE_ESCAPE); } struct state *state = ctx.udata; diff --git a/apps/testgame/scenes/ingame.c b/apps/testgame/scenes/ingame.c index 1fe1fdf..45761e7 100644 --- a/apps/testgame/scenes/ingame.c +++ b/apps/testgame/scenes/ingame.c @@ -3,6 +3,10 @@ #include "scene.h" #include "townengine/game_api.h" +#include "townengine/tabela.h" + +#define STB_PERLIN_IMPLEMENTATION +#include static void ingame_tick(struct state *state) { @@ -82,12 +86,14 @@ static void ingame_tick(struct state *state) { set_camera(&cam); - for (int y = 64; y--;) + #define TERRAIN_FREQUENCY 0.1f + + 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; + float d0 = stb_perlin_noise3((float)x * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 10 - 6; + float d1 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)y * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 10 - 6; + float d2 = stb_perlin_noise3((float)(x + 1) * TERRAIN_FREQUENCY, (float)(y - 1) * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 10 - 6; + float d3 = stb_perlin_noise3((float)x * TERRAIN_FREQUENCY, (float)(y - 1) * TERRAIN_FREQUENCY, 0, 0, 0, 0) * 10 - 6; unfurl_triangle("/assets/grass.gif", (t_fvec3){ x, d0, y }, @@ -105,6 +111,7 @@ static void ingame_tick(struct state *state) { (t_shvec2){ 0, 0 }, (t_shvec2){ 0, 768 }); } + } } diff --git a/townengine/game_api.h b/townengine/game_api.h index 94a4af9..ec1e30b 100644 --- a/townengine/game_api.h +++ b/townengine/game_api.h @@ -7,7 +7,6 @@ #include "rendering.h" #include "audio.h" #include "util.h" -#include "procgen.h" #include "input.h" /* application provided */ diff --git a/townengine/procgen.h b/townengine/procgen.h deleted file mode 100644 index c5c77d0..0000000 --- a/townengine/procgen.h +++ /dev/null @@ -1,6 +0,0 @@ -#ifndef PROCGEN_H -#define PROCGEN_H - -#include "procgen/perlin.h" - -#endif diff --git a/townengine/procgen/perlin.h b/townengine/procgen/perlin.h deleted file mode 100644 index a3cf81e..0000000 --- a/townengine/procgen/perlin.h +++ /dev/null @@ -1,10 +0,0 @@ -#ifndef PROCGEN_PERLIN_H -#define PROCGEN_PERLIN_H - -#include "../vec.h" - -void set_perlin_2d_seed(uint32_t seed); - -float sample_perlin_2d(t_fvec2 position, float frequency, uint8_t octaves); - -#endif diff --git a/townengine/procgen/perlin2d.c b/townengine/procgen/perlin2d.c deleted file mode 100644 index 42c3a99..0000000 --- a/townengine/procgen/perlin2d.c +++ /dev/null @@ -1,70 +0,0 @@ -#include "perlin.h" -#include "../vec.h" - -static uint32_t seed = 0; - -static const uint8_t hash[] = { 208,34,231,213,32,248,233,56,161,78,24,140,71,48,140,254,245,255,247,247,40, - 185,248,251,245,28,124,204,204,76,36,1,107,28,234,163,202,224,245,128,167,204, - 9,92,217,54,239,174,173,102,193,189,190,121,100,108,167,44,43,77,180,204,8,81, - 70,223,11,38,24,254,210,210,177,32,81,195,243,125,8,169,112,32,97,53,195,13, - 203,9,47,104,125,117,114,124,165,203,181,235,193,206,70,180,174,0,167,181,41, - 164,30,116,127,198,245,146,87,224,149,206,57,4,192,210,65,210,129,240,178,105, - 228,108,245,148,140,40,35,195,38,58,65,207,215,253,65,85,208,76,62,3,237,55,89, - 232,50,217,64,244,157,199,121,252,90,17,212,203,149,152,140,187,234,177,73,174, - 193,100,192,143,97,53,145,135,19,103,13,90,135,151,199,91,239,247,33,39,145, - 101,120,99,3,186,86,99,41,237,203,111,79,220,135,158,42,30,154,120,67,87,167, - 135,176,183,191,253,115,184,21,233,58,129,233,142,39,128,211,118,137,139,255, - 114,20,218,113,154,27,127,246,250,1,8,198,250,209,92,222,173,21,88,102,219 }; - -void set_perlin_2d_seed(uint32_t s) { - seed = s; -} - -static int32_t noise2(int x, int y) -{ - int tmp = hash[(y + seed) % 256]; - return hash[(tmp + x) % 256]; -} - -static float lin_inter(float x, float y, float s) -{ - return x + s * (y-x); -} - -static float smooth_inter(float x, float y, float s) -{ - return lin_inter(x, y, s * s * (3-2*s)); -} - -static float noise2d(float x, float y) -{ - int32_t x_int = (int32_t)x; - int32_t y_int = (int32_t)y; - float x_frac = x - (float)x_int; - float y_frac = y - (float)y_int; - int32_t s = noise2(x_int, y_int); - int32_t t = noise2(x_int + 1, y_int); - int32_t u = noise2(x_int, y_int + 1); - int v = noise2(x_int + 1, y_int + 1); - float low = smooth_inter((float)s, (float)t, x_frac); - float high = smooth_inter((float)u, (float)v, x_frac); - return smooth_inter(low, high, y_frac); -} - -/* https://gist.github.com/nowl/828013 */ -float sample_perlin_2d(t_fvec2 position, float frequency, uint8_t octaves) { - t_fvec2 a = m_vec_scale(position, frequency); - float amp = 1.0; - float fin = 0; - float div = 0.0; - - for(uint8_t i = 0; i < octaves; i++) - { - div += 256 * amp; - fin += noise2d(a.x, a.y) * amp; - amp /= 2; - a = m_vec_scale(a, 2); - } - - return fin/div; -} diff --git a/townengine/util.h b/townengine/util.h index 40ec551..9cb0a87 100644 --- a/townengine/util.h +++ b/townengine/util.h @@ -1,7 +1,7 @@ #ifndef UTIL_H #define UTIL_H -#include "vec.h" +#include "townengine/vec.h" #include #include