refactor: restructure the project

languages/d/main.d

@@ -0,0 +1,105 @@
+import std.stdio;
+import std.datetime;
+
+struct Image {
+    void* data;
+    int width;
+    int height;
+    int mipmaps;
+    int format;
+}
+
+struct Texture2D {
+    uint id;
+    int width;
+    int height;
+    int mipmaps;
+    int format;
+}
+
+struct Vector2 {
+    float x;
+    float y;
+}
+
+struct Color {
+    ubyte r;
+    ubyte g;
+    ubyte b;
+    ubyte a;
+}
+
+extern(C):
+    void InitWindow(int width, int height, const char* title);
+    void CloseWindow();
+
+    void SetTargetFPS(int fps);
+    void SetRandomSeed(uint seed);
+    int GetRandomValue(int min, int max);
+
+    Image LoadImage(const char* file_name);
+    void ImageResize(Image* image, int new_width, int new_height);
+    Texture2D LoadTextureFromImage(Image image);
+    void UnloadImage(Image image);
+    void UnloadTexture(Texture2D texture);
+
+    bool WindowShouldClose();
+    float GetFrameTime();
+
+    void BeginDrawing();
+    void ClearBackground(Color color);
+    void DrawTextureV(Texture2D texture, Vector2 position, Color tint);
+    void EndDrawing();
+
+const int WINDOW_WIDTH = 800;
+const int WINDOW_HEIGHT = 600;
+const int LOGO_HEIGHT = 64;
+const float LOGO_SPEED = 300;
+
+const Color BLACK = Color(0, 0, 0, 255);
+const Color WHITE = Color(255, 255, 255, 255);
+
+void main() {
+    InitWindow(WINDOW_WIDTH, WINDOW_HEIGHT, "Raylib in D");
+    SetTargetFPS(60);
+    SetRandomSeed(cast(uint)Clock.currStdTime());
+
+    Image logo_image = LoadImage("./d_logo.png");
+    ImageResize(&logo_image, logo_image.width * LOGO_HEIGHT / logo_image.height, LOGO_HEIGHT);
+    Texture2D logo_texture = LoadTextureFromImage(logo_image);
+    UnloadImage(logo_image);
+
+    float x = GetRandomValue(0, WINDOW_WIDTH - logo_texture.width);
+    float y = GetRandomValue(0, WINDOW_HEIGHT - logo_texture.height);
+
+    float dx = LOGO_SPEED * (GetRandomValue(0, 1) ? -1 : 1);
+    float dy = LOGO_SPEED * (GetRandomValue(0, 1) ? -1 : 1);
+
+    while (!WindowShouldClose()) {
+        float delta_time = GetFrameTime();
+
+        x += dx * delta_time;
+        y += dy * delta_time;
+
+        if (x < 0 || (x + logo_texture.width) >= WINDOW_WIDTH - 1)
+        {
+            dx *= -1;
+            x += dx * delta_time;
+        }
+        if (y < 0 || (y + logo_texture.height) >= WINDOW_HEIGHT - 1)
+        {
+            dy *= -1;
+            y += dy * delta_time;
+        }
+
+        BeginDrawing();
+
+        ClearBackground(BLACK);
+        DrawTextureV(logo_texture, Vector2(x, y), WHITE);
+
+        EndDrawing();
+    }
+
+    UnloadTexture(logo_texture);
+    CloseWindow();
+}