feat: rotating stars

src/wallpaper.c

@@ -8,10 +8,31 @@
 #include <unistd.h>
 #include <time.h>
 #include <string.h>
+#include <math.h>
 
 #define WIDTH  1920
 #define HEIGHT 1080
 
+typedef struct {
+    const char* name;
+    int x;
+    int y;
+    int cx;
+    int cy;
+    float angle;
+    float angle_step;
+} Star;
+
+static Star stars[] = {
+    { .name = "star_1.png", .x =   4,  .y = 528, .cx = 165, .cy = 166, .angle = 90.0, .angle_step = -0.025 },
+    { .name = "star_2.png", .x = 215,  .y = 809, .cx = 82,  .cy = 83,  .angle = 90.0, .angle_step = 0.05   },
+    { .name = "star_3.png", .x = 333,  .y = 781, .cx = 25,  .cy = 31,  .angle = 90.0, .angle_step = 0.15   },
+    { .name = "star_4.png", .x = 956,  .y = 405, .cx = 166, .cy = 167, .angle = 90.0, .angle_step = -0.1   },
+    { .name = "star_5.png", .x = 1164, .y = 570, .cx = 66,  .cy = 70,  .angle = 90.0, .angle_step = 0.075  },
+};
+
+#define STARS_COUNT (int)(sizeof(stars) / sizeof(stars[0]))
+
 char *hyprland_socket_path;
 
 Vector2 hyprland_get_cursor_position() {
@@ -113,9 +134,14 @@ int main(void) {
 
     // initialize textures
     Texture2D distanceFieldTex = load_texture_from_file("resources/textures/background_distance_field.png");
-    Texture2D backgroundTex = load_texture_from_file("resources/textures/background_transparent.png");
+    Texture2D backgroundTex = load_texture_from_file("resources/textures/background_no_stars.png");
     RenderTexture2D target = LoadRenderTexture(WIDTH, HEIGHT);
 
+    Texture2D starTextures[STARS_COUNT];
+    for (int i = 0; i < STARS_COUNT; i++) {
+        starTextures[i] = load_texture_from_file(TextFormat("resources/textures/%s", stars[i].name));
+    }
+
     // initialize shader
     Shader shader = load_shader_from_file("resources/shaders/basic.vs", "resources/shaders/distance_field.fs");
 
@@ -165,12 +191,25 @@ int main(void) {
 
         DrawTextureRec(backgroundTex, (Rectangle){0, 0, screenWidth, screenHeight}, (Vector2){0, 0}, WHITE);
 
+        for (int i = 0; i < STARS_COUNT; i++) {
+            stars[i].angle = fmodf(stars[i].angle + stars[i].angle_step, 360.0f);
+
+            Texture2D tex = starTextures[i];
+            Rectangle source = {0, 0, (float)tex.width, (float)tex.height};
+            Rectangle dest   = {stars[i].x, stars[i].y, (float)tex.width, (float)tex.height};
+            Vector2   origin = {stars[i].cx, stars[i].cy};
+            DrawTexturePro(tex, source, dest, origin, stars[i].angle, WHITE);
+        }
+
         EndDrawing();
     }
 
     UnloadRenderTexture(target);
     UnloadTexture(distanceFieldTex);
     UnloadTexture(backgroundTex);
+    for (int i = 0; i < STARS_COUNT; i++) {
+        UnloadTexture(starTextures[i]);
+    }
     UnloadShader(shader);
     CloseWindow();