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with Interfaces.C; use Interfaces.C;
with Interfaces.C.Strings; use Interfaces.C.Strings;
with Raymath; use Raymath;

package Raylib is
    procedure Init_Window(Width, Height: int; Title: chars_ptr)
        with 
            Import => True, 
            Convention => C, 
            External_Name => "InitWindow";
    procedure Close_Window
        with
            Import => True,
            Convention => C,
            External_Name => "CloseWindow";
    function Window_Should_Close return int
        with
            Import => True,
            Convention => C,
            External_Name => "WindowShouldClose";
    procedure Begin_Drawing
        with
            Import => True,
            Convention => C,
            External_Name => "BeginDrawing";
    procedure End_Drawing
        with
            Import => True,
            Convention => C,
            External_Name => "EndDrawing";
    type Color is record
        r: unsigned_char;
        g: unsigned_char;
        b: unsigned_char;
        a: unsigned_char;
    end record
        with Convention => C_Pass_By_Copy;
    procedure Clear_Background(c: Color)
        with
            Import => True,
            Convention => C,
            External_Name => "ClearBackground";
    procedure Draw_Rectangle(posX, posY, Width, Height: int; c: Color)
        with
            Import => True,
            Convention => C,
            External_Name => "DrawRectangle";
    function Get_Screen_Width return int
        with
            Import => True,
            Convention => C,
            External_Name => "GetScreenWidth";
    function Get_Screen_Height return int
        with
            Import => True,
            Convention => C,
            External_Name => "GetScreenHeight";
    FLAG_WINDOW_RESIZABLE: constant unsigned := 16#00000004#;
    procedure Set_Config_Flags(flags: unsigned)
        with
            Import => True,
            Convention => C,
            External_Name => "SetConfigFlags";
    KEY_R: constant int := 82;
    KEY_S: constant int := 83;
    KEY_W: constant int := 87;
    KEY_A: constant int := 65;
    KEY_D: constant int := 68;
    KEY_SPACE: constant int := 32;
    function Is_Key_Pressed(key: int) return C_bool
        with
            Import => True,
            Convention => C,
            External_Name => "IsKeyPressed";

    procedure Draw_Rectangle_V(position: Vector2; size: Vector2; c: Color)
        with
            Import => True,
            Convention => C,
            External_Name => "DrawRectangleV";

    type Camera2D is record
        offset: Vector2;
        target: Vector2;
        rotation: C_float;
        zoom: C_float;
    end record
        with Convention => C_Pass_By_Copy;
    procedure Begin_Mode2D(camera: Camera2D)
        with
            Import => True,
            Convention => C,
            External_Name => "BeginMode2D";
    procedure End_Mode2D
        with
            Import => True,
            Convention => C,
            External_Name => "EndMode2D";
    function Get_Frame_Time return C_float
        with
            Import => True,
            Convention => C,
            External_Name => "GetFrameTime";
    function Get_Color(hexValue: unsigned) return Color
        with
            Import => True,
            Convention => C,
            External_Name => "GetColor";
    procedure Draw_Circle(centerX, centerY: int; radius: C_float; c: Color)
        with
            Import => True,
            Convention => C,
            External_Name => "DrawCircle";
    procedure Draw_Circle_V(center: Vector2; radius: C_float; C: Color)
        with
            Import => True,
            Convention => C,
            External_Name => "DrawCircleV";
    function Is_Key_Down(Key: int) return C_Bool
        with
            Import => True,
            Convention => C,
            External_Name => "IsKeyDown";
end Raylib;