Embed the SDL2 libraries into vendor:sdl2

vendor/sdl2/sdl_rect.odin

@@ -0,0 +1,50 @@
+package sdl2
+
+import "core:c"
+
+when ODIN_OS == "windows" do foreign import lib "SDL2.lib"
+when ODIN_OS == "linux"   do foreign import lib "system:SDL2"
+when ODIN_OS == "darwin"  do foreign import lib "system:SDL2"
+when ODIN_OS == "freebsd" do foreign import lib "system:SDL2"
+
+Point :: struct {
+	x: c.int,
+	y: c.int,
+}
+
+FPoint :: struct {
+	x: f32,
+	y: f32,
+}
+
+
+Rect :: struct {
+	x, y: c.int,
+	w, h: c.int,
+}
+
+FRect :: struct {
+	x, y: f32,
+	w, h: f32,
+}
+
+PointInRect :: proc(p, r: ^Rect) -> bool {
+	return bool((p.x >= r.x) && (p.x < (r.x + r.w)) && (p.y >= r.y) && (p.y < (r.y + r.h)));
+}
+
+RectEmpty :: proc(r: ^Rect) -> bool {
+	return bool(r == nil|| r.w <= 0 || r.h <= 0);
+}
+
+RectEquals :: proc(a, b: ^Rect) -> bool {
+	return a != nil && b != nil && a^ == b^;
+}
+
+@(default_calling_convention="c", link_prefix="SDL_")
+foreign lib {
+	HasIntersection      :: proc(A, B: ^Rect) -> bool ---
+	IntersectRect        :: proc(A, B: ^Rect, result: ^Rect) -> bool ---
+	UnionRect            :: proc(A, B: ^Rect, result: ^Rect) ---
+	EnclosePoints        :: proc(points: [^]Point, count: c.int, clip: ^Rect, result: ^Rect) -> bool ---
+	IntersectRectAndLine :: proc(rect: ^Rect, X1, Y1, X2, Y2: ^c.int) -> bool ---
+}