1 files changed, 61 insertions, 0 deletions
diff --git a/noncore/games/sfcave-sdl/rect.h b/noncore/games/sfcave-sdl/rect.h
new file mode 100644
index 0000000..dc9c9d5
--- a/dev/null
+++ b/noncore/games/sfcave-sdl/rect.h
@@ -0,0 +1,61 @@
+#ifndef __RECT_H
+#define __RECT_H
+
+#include "SDL.h"
+
+class Rect
+{
+public:
+	Rect() { r.x = r.y = r.w = r.h = 0; }
+	Rect( int x, int y, int w, int h ) { setRect( x, y, w, h ); }
+	~Rect() {}
+
+	void setRect( int x, int y, int w, int h ) { r.x = x; r.y = y; r.w = w; r.h = h; }
+	SDL_Rect getRect() { return r; }
+	int x() { return r.x; }
+	int y() { return r.y; }
+	int w() { return r.w; }
+	int h() { return r.h; }
+
+	void x( int x) { r.x = x; }
+	void y( int y) { r.y = y; }
+	void w( int w) { r.w = w; }
+	void h( int h) { r.h = h; }
+
+	void moveBy( int x, int y )
+	{
+		r.x += x;
+		r.y += y;
+	}
+
+	bool intersects( Rect r2 )
+	{
+		int tw = r.w;
+		int th = r.h;
+		int rw = r2.w();
+		int rh = r2.h();
+		if (rw <= 0 || rh <= 0 || tw <= 0 || th <= 0) {
+			return false;
+		}
+		int tx = r.x;
+		int ty = r.y;
+		int rx = r2.x();
+		int ry = r2.y();
+		rw += rx;
+		rh += ry;
+		tw += tx;
+		th += ty;
+
+		//      overflow || intersect
+		return ((rw < rx || rw > tx) &&
+			(rh < ry || rh > ty) &&
+			(tw < tx || tw > rx) &&
+			(th < ty || th > ry));
+	}
+
+private:
+	SDL_Rect r;
+};
+
+#endif
+