===================================================================
--- original.js
+++ change.js
@@ -13,10 +13,12 @@
 				self.speed = 0;
 			}
 		} else {
 			self.y = 2732 - self.height;
-			self.x += self.speed;
-			if (self.speed < 5) self.speed += 0.1;
+			if (!hero.intersects(self)) {
+				self.x += self.speed;
+				if (self.speed < 5) self.speed += 0.1;
+			}
 		}
 	};
 });
 var Block2 = Container.expand(function () {
@@ -34,10 +36,12 @@
 				self.speed = 0;
 			}
 		} else {
 			self.y = 2732 - self.height;
-			self.x += self.speed;
-			if (self.speed < 3) self.speed += 0.05;
+			if (!hero.intersects(self)) {
+				self.x += self.speed;
+				if (self.speed < 3) self.speed += 0.05;
+			}
 		}
 	};
 });
 var Pizza = Container.expand(function () {