module;


export module BackGround;
import GameObject;
import Graphics;

export struct BackGround : GameObject
{
    static constexpr Rect GroundRect{ 2,104,2402,130 };
    static constexpr Rect CloudRect{ 166,2,258,29 };
    float speed = -500.f;
    Vector2 CloudPosi;
    virtual void OnStartUp()
    {
        imge.rect = GroundRect;
        Posi = { 0,50 };
        CloudPosi = { 1050,200 };
        Size = imge.rect.size();
    }
    virtual void OnCleanUp()
    {

    }
    virtual void OnUpdate(float delta)
    {
        Posi.x += speed * delta;
        CloudPosi.x += speed * delta * 0.5f;
    }
    virtual void OnLaterUpdate(float delta)
    {
        if (Posi.x <= -Size.x)
        {
            Posi.x += Size.x;
        }
        if (CloudPosi.x <= 0 - CloudRect.size().x)
        {
            CloudPosi.x = 1050;
        }
    }
    virtual void OnReset() override
    {
        Posi.x = 0;
    }
    virtual void OnRender() override
    {
        Rect dst =
        {
            Posi.x - Size.x * Anch.x,
            Posi.y + Size.y * (1.f - Anch.y),
            Posi.x + Size.x * (1.f - Anch.x),
            Posi.y - Size.y * Anch.y,
        };
        Graphics::DrawBitMap(imge.bitmap, dst, imge.rect);
        dst.left += Size.x;
        dst.right += Size.x;
        Graphics::DrawBitMap(imge.bitmap, dst, imge.rect);

        auto cloud_size = CloudRect.size();
        Rect cloud_dst =
        {
            CloudPosi.x,
            CloudPosi.y + cloud_size.y,
            CloudPosi.x + cloud_size.x,
            CloudPosi.y,
        };
        Graphics::DrawBitMap(imge.bitmap, dst, CloudRect);
    }
};