diff --git a/demo/src/main.c b/demo/src/main.c
index 95331e2..7b363ff 100644
--- a/demo/src/main.c
+++ b/demo/src/main.c
@@ -1,7 +1,7 @@
 
 #include <helianthus.h>
 
-Sprite ball, brick1, brick2;
+Sprite ball, brick1, brick2, brick3;
 Group edges;
 Group movement;
 Sound beep;
@@ -11,45 +11,52 @@ void init() {
 	spriteSetAnimation(ball, "data/sprite/breadball.png");
 	spriteSetColliderCircle(ball, 0, 0, -1);
 	spriteSetRotateToDirection(ball, TRUE);
-	
+
 	brick1 = createSpriteEx(200-32, 200+64, 64, 64);
 	spriteSetAnimation(brick1, "data/sprite/bricks.png");
 	spriteSetTintColor(brick1, rgb(0, 0, 1));
 	spriteSetColliderRectangle(brick1, 0, 0, 0, -1, -1, 20);
 	spriteSetBounciness(brick1, 0.5);
-	
+
 	brick2 = createSpriteEx(200+32, 200+64, 64, 64);
 	spriteSetAnimation(brick2, "data/sprite/bricks.png");
-	spriteSetTintColor(brick2, rgba(1, 0, 1, 0.5));
 	spriteSetColliderRectangle(brick2, 0, 0, 0, -1, -1, 20);
-	
+
+	brick3 = createSpriteEx(200+32+64, 200+64, 64, 64);
+	spriteSetAnimation(brick3, "data/sprite/bricks.png");
+	spriteSetTintColor(brick3, rgba(1, 0, 1, 0.5));
+	spriteSetColliderRectangle(brick3, 0, 0, 0, -1, -1, 20);
+	spriteSetBounciness(brick3, 2);
+
 	movement = createGroup();
 	groupAdd(movement, ball);
-	groupAdd(movement, brick1);
 	groupAdd(movement, brick2);
+
 	edges = createEdgesGroup();
-	
+	groupAdd(edges, brick1);
+	groupAdd(edges, brick3);
+
 	beep = createSound("data/sound/beep.ogg");
 }
 
 void draw() {
 	double dt = worldGetTimeStep();
 	double accel = 100;
-	
+
 	double vx = spriteGetVelocityX(ball);
 	double vy = spriteGetVelocityY(ball);
 	if (keyDown("left"))  spriteSetVelocityX(ball, vx - accel*dt);
 	if (keyDown("right")) spriteSetVelocityX(ball, vx + accel*dt);
 	if (keyDown("up"))    spriteSetVelocityY(ball, vy - accel*dt);
 	if (keyDown("down"))  spriteSetVelocityY(ball, vy + accel*dt);
-	
+
 	if (mouseWentDown("left")) soundPlay(beep, FALSE);
-	
+
 	groupCollideBetween(movement, 1);
-	groupPushGroup(edges, movement, 1);
-	
+	groupPushGroup(edges, movement, 0.9);
+
 	drawSprites();
-	
+
 	point(mouseX(), mouseY());
 }
 
@@ -57,5 +64,5 @@ int main() {
 	worldSetInit(&init);
 	worldSetDraw(&draw);
 	worldRun();
-	return 0;	
+	return 0;
 }
diff --git a/src/drawing.c b/src/drawing.c
index ba5e348..0a6fcb7 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -125,7 +125,7 @@ static void endPath(int close, int stroke, int fill) {
 static void pushPathPoint(double x, double y) {
 	if (pathAllocated < pathSize + 2) {
 		pathAllocated += pathAllocated/4 + 32;
-		path = realloc(path, pathAllocated);
+		path = realloc(path, pathAllocated*sizeof(*path));
 		memset(&path[pathSize], 0, (pathAllocated - pathSize)*sizeof(*path));
 	}
 	path[pathSize++] = x;
diff --git a/src/group.c b/src/group.c
index 6abcd42..d443050 100644
--- a/src/group.c
+++ b/src/group.c
@@ -33,7 +33,7 @@ Group createEdgesGroupEx(double x1, double y1, double x2, double y2, double bord
 }
 
 Group createEdgesGroup()
-	{ return createEdgesGroupEx(0, 0, worldGetWidth(), worldGetHeight(), 100); }
+	{ return createEdgesGroupEx(0, 0, worldGetWidth(), worldGetHeight(), worldGetHeight()); }
 
 
 void groupDestroy(Group group) {