add falling block

objects/environment/rock/rock.gd

@@ -0,0 +1,16 @@
+extends KinematicBody2D
+var velocity = Vector2.ZERO
+onready var bottom = $Bottom
+
+func _physics_process(delta):
+	if !is_on_floor(): 
+		#Gravity
+		velocity.y = 100
+		velocity.x = 0
+	else:
+		velocity.y = 0
+	move_and_slide(velocity,Vector2.UP)
+	velocity.x = 0
+
+func push(direction):
+	velocity -= direction * 32