1 files changed, 43 insertions, 0 deletions
diff --git a/rect.h b/rect.h
new file mode 100644
index 0000000..4d6a88f
--- /dev/null
+++ b/rect.h
@@ -0,0 +1,43 @@
+#ifndef rect_h
+#define rect_h
+
+typedef struct {
+	int x, y, w, h;
+} Rectangle;
+
+Rectangle make_rect(int x, int y, int w, int h);
+
+int rects_overlap(const Rectangle* a, const Rectangle* b);
+int rects_overlap2(
+	int x0,
+	int y0,
+	int w0,
+	int h0,
+	int x1,
+	int y1,
+	int w1,
+	int h1
+);
+int point_rect_overlap(
+	const Rectangle* r,
+	int px,
+	int py
+);
+int point_rect_overlap2(
+	int x,
+	int y,
+	int w,
+	int h,
+	int px,
+	int py
+);
+Rectangle rect_intersect(
+	const Rectangle* a,
+	const Rectangle* b
+);
+Rectangle* rect_merge(
+	Rectangle* d,
+	const Rectangle* r
+);
+
+#endif