1 files changed, 36 insertions, 0 deletions
diff --git a/pong.c b/pong.c
new file mode 100644
index 0000000..6ffd452
--- /dev/null
+++ b/pong.c
@@ -0,0 +1,36 @@
+#include "pong.h"
+#include "screen.h"
+
+inline void UpdatePosition ( point_t * const position, const point_t velocity ) {
+    position->x += velocity.x ;
+    position->y += velocity.y ;
+}
+
+/* CheckMoveableCollision: Implementation of AABB collision for moveable objects */
+bool CheckMoveableCollision ( const struct moveable_t m1, const struct moveable_t m2 ) {
+    const point_t m1p = m1.position;
+    const point_t m2p = m2.position;
+    const bool checkX = m1p.x + m1.width > m2p.x,
+                checkY = m1p.y + m1.height > m2p.y && m1p.y < m2p.y + m2.height;
+    return checkX && checkY;
+}
+
+bool CheckLeftWallCollision ( const struct moveable_t m ) {
+    return m.position.x < 0 ;
+}
+
+bool CheckRightWallCollision ( const struct moveable_t m ) {
+    return m.position.x + m.width > SCREEN_WIDTH;
+}
+
+bool CheckGroundCollision ( const struct moveable_t m ) {
+    return m.position.y + m.height > SCREEN_HEIGHT;
+}
+
+bool CheckCeilingCollision ( const struct moveable_t m ) {
+    return m.position.y < 0;
+}
+
+void Reset ( ball_t * const ball ) {
+    ball->position = ( point_t ) { SCREEN_WIDTH >> 1, SCREEN_HEIGHT >> 1 };
+}