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-rw-r--r--main.c209
1 files changed, 143 insertions, 66 deletions
diff --git a/main.c b/main.c
index d122556..39611b3 100644
--- a/main.c
+++ b/main.c
@@ -1,6 +1,17 @@
// @TODO:
-// - config selection menu
-// - optional opacity (color1,2 can have alpha)
+// - configurable:
+// - fov
+// - far/near clipping plane
+// - "player" speed
+// - nice examples with comments
+// - readme
+/*
+Anyone is free to modify/distribute/use/sell/etc
+this software for any purpose by any means.
+Any copyright protections are relinquished by the author(s).
+This software is provided "as is", without any warranty.
+The author(s) shall not be held liable in connection with this software.
+*/
#define V_GL 1
#define V_WINDOWED 1
#include "vlib.h"
@@ -341,22 +352,65 @@ int main(int argc, char **argv) {
g_grain_vshader = V_gl_shader_compile_code("grainv.glsl", NULL, vshader_code, GL_VERTEX_SHADER);
}
- const char *config_filename = "sandboxes/test.txt";
+ GLText menu_text = {0};
+ size_t menu_sel = 0;
+ char config_name[256] = {0};
Time config_last_modified = {0};
Function *functions = NULL;
bool fullscreen = false;
while (1) {
+ top:;
+
SDL_Event event = {0};
float dt = window_frame();
- if (!time_eq(fs_last_modified(config_filename), config_last_modified)) {
- sleep_ms(10); // wait a bit to make sure whatever's writing here is done
- sandbox_clear(&functions);
- functions = sandbox_create(config_filename);
- config_last_modified = fs_last_modified(config_filename);
+ if (*config_name) {
+ char filename[512];
+ strbuf_print(filename, "sandboxes/%s.txt", config_name);
+ if (!time_eq(fs_last_modified(filename), config_last_modified)) {
+ sleep_ms(10); // wait a bit to make sure whatever's writing here is done
+ sandbox_clear(&functions);
+ functions = sandbox_create(filename);
+ config_last_modified = fs_last_modified(filename);
+ }
+ }
+
+ size_t n_menu_items = 0;
+ char selected_item[256] = {0};
+
+ if (!*config_name) {
+ DirEntry entries[1000] = {0};
+ static char text[65536];
+ size_t c = 0;
+ size_t i, n_entries = fs_list_dir("sandboxes", entries, sizeof entries);
+
+ qsort(entries, n_entries, sizeof *entries, fs_dir_entry_cmp_by_name_qsort);
+
+ size_t y_offset = menu_sel < 10 ? 0 : menu_sel - 10;
+
+ for (i = 0; i < n_entries; ++i) {
+ char *dot = strchr(entries[i].name, '.');
+ if (entries[i].type == FS_FILE && dot && strcmp(dot, ".txt") == 0) {
+ if (n_menu_items >= y_offset) {
+ *dot = '\0';
+ if (n_menu_items == menu_sel) {
+ // this is the currently selected item
+ str_print(text + c, sizeof text - c, ">");
+ ++c;
+ strbuf_cpy(selected_item, entries[i].name);
+ }
+ str_print(text + c, sizeof text - c, "%s\n", entries[i].name);
+ c += strlen(text + c);
+ }
+ ++n_menu_items;
+ }
+ }
+ menu_sel %= n_menu_items;
+ gl_text_set(&menu_text, text);
+ fs_free_dir_entries(entries, n_entries);
}
while (SDL_PollEvent(&event)) {
@@ -369,6 +423,29 @@ int main(int argc, char **argv) {
fullscreen = !fullscreen;
window_set_fullscreen(fullscreen);
break;
+ case SDLK_UP:
+ if (n_menu_items)
+ menu_sel = (menu_sel + n_menu_items - 1) % n_menu_items;
+ break;
+ case SDLK_DOWN:
+ if (n_menu_items)
+ menu_sel = (menu_sel + 1) % n_menu_items;
+ break;
+ case SDLK_RETURN:
+ if (!*config_name && menu_sel < n_menu_items) {
+ strbuf_cpy(config_name, selected_item);
+ config_last_modified = (Time){0};
+ goto top; // force sandbox reload
+ }
+ break;
+ case SDLK_ESCAPE:
+ if (*config_name) {
+ *config_name = '\0';
+ sandbox_clear(&functions);
+ goto top;
+ } else {
+ goto quit;
+ }
}
break;
case SDL_MOUSEMOTION: {
@@ -383,68 +460,68 @@ int main(int argc, char **argv) {
}
}
- {
- int dx = (window_is_key_down(KEY_D) || window_is_key_down(KEY_RIGHT)) - (window_is_key_down(KEY_A) || window_is_key_down(KEY_LEFT));
- int dy = (window_is_key_down(KEY_PAGEUP) || window_is_key_down(KEY_Q)) - (window_is_key_down(KEY_PAGEDOWN) || window_is_key_down(KEY_E));
- int dz = (window_is_key_down(KEY_S) || window_is_key_down(KEY_DOWN)) - (window_is_key_down(KEY_W) || window_is_key_down(KEY_UP));
- if (dx || dy || dz) {
- const float player_speed = 3;
- vec3 dp = scale3(normalize3(Vec3((float)dx, (float)dy, (float)dz)), player_speed * dt);
- mat3 pitch = mat3_pitch(player->pitch);
- mat3 yaw = mat3_yaw(player->yaw);
- mat3 rot = mat3_mul(&yaw, &pitch);
- dp = transform3(&rot, dp);
- player->pos = add3(player->pos, dp);
+ if (*config_name) {
+ {
+ int dx = (window_is_key_down(KEY_D) || window_is_key_down(KEY_RIGHT)) - (window_is_key_down(KEY_A) || window_is_key_down(KEY_LEFT));
+ int dy = (window_is_key_down(KEY_PAGEUP) || window_is_key_down(KEY_Q)) - (window_is_key_down(KEY_PAGEDOWN) || window_is_key_down(KEY_E));
+ int dz = (window_is_key_down(KEY_S) || window_is_key_down(KEY_DOWN)) - (window_is_key_down(KEY_W) || window_is_key_down(KEY_UP));
+ if (dx || dy || dz) {
+ const float player_speed = 3;
+ vec3 dp = scale3(normalize3(Vec3((float)dx, (float)dy, (float)dz)), player_speed * dt);
+ mat3 pitch = mat3_pitch(player->pitch);
+ mat3 yaw = mat3_yaw(player->yaw);
+ mat3 rot = mat3_mul(&yaw, &pitch);
+ dp = transform3(&rot, dp);
+ player->pos = add3(player->pos, dp);
+ }
+ }
+ gl.Enable(GL_DEPTH_TEST);
+
+ arr_foreachp(functions, Function, f) {
+ gl.Viewport(0,0,(GLsizei)tex_width,(GLsizei)f->tex_height);
+ gl.BindFramebuffer(GL_FRAMEBUFFER, f->fbo);
+ gl.FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, f->grains_tex2, 0);
+ gl_program_use(&f->update_program);
+ gl.ActiveTexture(GL_TEXTURE0);
+ gl.BindTexture(GL_TEXTURE_2D, f->grains_tex1);
+ gl_uniform1i(&f->update_program, "u_tex", 0);
+ gl_uniform1i(&f->update_program, "u_new_grains_per_second", (GLint)f->new_grains_per_second);
+ gl_uniform1f(&f->update_program, "u_dt", dt);
+ gl_uniform1f(&f->update_program, "u_rand_seed", randf());
+ gl_uniform1f(&f->update_program, "u_grain_gen_radius", f->grain_gen_radius);
+ gl_vao_render(f->update_vao, NULL);
}
- }
-
-
- gl.Enable(GL_DEPTH_TEST);
-
-
- arr_foreachp(functions, Function, f) {
- gl.Viewport(0,0,(GLsizei)tex_width,(GLsizei)f->tex_height);
- gl.BindFramebuffer(GL_FRAMEBUFFER, f->fbo);
- gl.FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, f->grains_tex2, 0);
- gl_program_use(&f->update_program);
- gl.ActiveTexture(GL_TEXTURE0);
- gl.BindTexture(GL_TEXTURE_2D, f->grains_tex1);
- gl_uniform1i(&f->update_program, "u_tex", 0);
- gl_uniform1i(&f->update_program, "u_new_grains_per_second", (GLint)f->new_grains_per_second);
- gl_uniform1f(&f->update_program, "u_dt", dt);
- gl_uniform1f(&f->update_program, "u_rand_seed", randf());
- gl_uniform1f(&f->update_program, "u_grain_gen_radius", f->grain_gen_radius);
- gl_vao_render(f->update_vao, NULL);
- }
- gl.BindFramebuffer(GL_FRAMEBUFFER, 0);
- {
- vec2i wsize = window_get_size();
- gl.Viewport(0,0,wsize.x,wsize.y);
- }
- {
- vec3 p = player->pos;
- g_camera = mat4_camera(p, player->yaw, player->pitch, degree2rad(45), 1, 50);
- }
- arr_foreachp(functions, Function, f) {
- gl_program_use(&f->grain_program);
- gl_uniformM4(&f->grain_program, "u_transform", &g_camera);
- gl_uniform4f(&f->grain_program, "u_color1", f->color1);
- gl_uniform4f(&f->grain_program, "u_color2", f->color2);
- gl_uniform1f(&f->grain_program, "u_color_scale", f->color_scale);
- gl.BindTexture(GL_TEXTURE_2D, f->grains_tex2);
- gl.ActiveTexture(GL_TEXTURE0);
- gl_uniform1i(&f->grain_program, "u_offset_tex", 0);
- gl.BindVertexArray(f->grain_vao.id);
- gl.DrawArraysInstanced(GL_TRIANGLES, 0, 6, (GLsizei)f->ngrains);
-
- { // swap "front and back" grain textures
- GLuint temp = f->grains_tex1;
- f->grains_tex1 = f->grains_tex2;
- f->grains_tex2 = temp;
+ gl.BindFramebuffer(GL_FRAMEBUFFER, 0);
+ {
+ vec2i wsize = window_get_size();
+ gl.Viewport(0,0,wsize.x,wsize.y);
+ }
+ {
+ vec3 p = player->pos;
+ g_camera = mat4_camera(p, player->yaw, player->pitch, degree2rad(45), 1, 50);
}
+ arr_foreachp(functions, Function, f) {
+ gl_program_use(&f->grain_program);
+ gl_uniformM4(&f->grain_program, "u_transform", &g_camera);
+ gl_uniform4f(&f->grain_program, "u_color1", f->color1);
+ gl_uniform4f(&f->grain_program, "u_color2", f->color2);
+ gl_uniform1f(&f->grain_program, "u_color_scale", f->color_scale);
+ gl.BindTexture(GL_TEXTURE_2D, f->grains_tex2);
+ gl.ActiveTexture(GL_TEXTURE0);
+ gl_uniform1i(&f->grain_program, "u_offset_tex", 0);
+ gl.BindVertexArray(f->grain_vao.id);
+ gl.DrawArraysInstanced(GL_TRIANGLES, 0, 6, (GLsizei)f->ngrains);
+
+ { // swap "front and back" grain textures
+ GLuint temp = f->grains_tex1;
+ f->grains_tex1 = f->grains_tex2;
+ f->grains_tex2 = temp;
+ }
+ }
+ } else {
+ gl_text_render(&menu_text, Vec2(0,-1), 1, Vec3(1,1,1), Vec4(0,0,0,1));
}
-
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-10-16 11:25:00 +0000