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

objects/environment/rock/rock.tscn

@@ -0,0 +1,40 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://graphics/rock/rock.png" type="Texture" id=1]
+[ext_resource path="res://scripts/1px_border.gdshader" type="Shader" id=2]
+[ext_resource path="res://objects/environment/rock/rock.gd" type="Script" id=3]
+
+
+[sub_resource type="ShaderMaterial" id=1]
+shader = ExtResource( 2 )
+shader_param/border_color = Color( 0, 0, 0, 1 )
+shader_param/border_corners = false
+
+[sub_resource type="RectangleShape2D" id=2]
+extents = Vector2( 5, 4.5 )
+
+[sub_resource type="RectangleShape2D" id=3]
+extents = Vector2( 5, 4.5 )
+
+[node name="Rock" type="KinematicBody2D" groups=["pushable"]]
+collision_layer = 4
+script = ExtResource( 3 )
+
+[node name="Sprite" type="Sprite" parent="."]
+material = SubResource( 1 )
+position = Vector2( 0, -1 )
+texture = ExtResource( 1 )
+centered = false
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+position = Vector2( 5, 3.5 )
+shape = SubResource( 2 )
+
+[node name="Area2D" type="Area2D" parent="." groups=["squash"]]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
+position = Vector2( 5, 3.5 )
+shape = SubResource( 3 )
+
+[node name="Bottom" type="Position2D" parent="."]
+position = Vector2( 5, 8 )