added new type of falling block

objects/environment/falling_block/falling_block_cave.tscn

@@ -0,0 +1,99 @@
+[gd_scene load_steps=8 format=2]
+
+[ext_resource path="res://graphics/falling_block/falling_block_cave.png" type="Texture" id=1]
+[ext_resource path="res://objects/environment/falling_block/falling_block.gd" type="Script" id=2]
+
+[sub_resource type="RectangleShape2D" id=1]
+extents = Vector2( 4, 1.5 )
+
+[sub_resource type="RectangleShape2D" id=2]
+extents = Vector2( 3.5, 0.5 )
+
+[sub_resource type="RectangleShape2D" id=3]
+extents = Vector2( 3, 0.5 )
+
+[sub_resource type="Animation" id=4]
+resource_name = "disappear"
+length = 0.6
+step = 0.05
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:visible")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0.00203761, 0.1, 0.2, 0.3, 0.4, 0.5 ),
+"transitions": PoolRealArray( 1, 1, 1, 1, 1, 1 ),
+"update": 1,
+"values": [ true, false, true, false, true, false ]
+}
+
+[sub_resource type="Animation" id=5]
+resource_name = "idle"
+tracks/0/type = "value"
+tracks/0/path = NodePath("Sprite:visible")
+tracks/0/interp = 1
+tracks/0/loop_wrap = true
+tracks/0/imported = false
+tracks/0/enabled = true
+tracks/0/keys = {
+"times": PoolRealArray( 0 ),
+"transitions": PoolRealArray( 1 ),
+"update": 1,
+"values": [ true ]
+}
+
+[node name="FallingBlock" type="KinematicBody2D"]
+collision_layer = 4
+script = ExtResource( 2 )
+fall_speed = 1.0
+
+[node name="Sprite" type="Sprite" parent="."]
+texture = ExtResource( 1 )
+centered = false
+hframes = 2
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+position = Vector2( 4, 2.5 )
+shape = SubResource( 1 )
+
+[node name="VisibilityNotifier2D" type="VisibilityNotifier2D" parent="."]
+visible = false
+position = Vector2( 4, 4 )
+scale = Vector2( 0.4, 0.4 )
+
+[node name="Area2D" type="Area2D" parent="."]
+collision_mask = 2
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
+position = Vector2( 4, 0 )
+shape = SubResource( 2 )
+
+[node name="FallTimer" type="Timer" parent="."]
+process_mode = 0
+wait_time = 0.1
+one_shot = true
+
+[node name="RefreshTimer" type="Timer" parent="."]
+process_mode = 0
+wait_time = 2.0
+one_shot = true
+
+[node name="CrushArea" type="Area2D" parent="."]
+visible = false
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="CrushArea"]
+position = Vector2( 4, 4.5 )
+shape = SubResource( 3 )
+
+[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
+autoplay = "idle"
+anims/disappear = SubResource( 4 )
+anims/idle = SubResource( 5 )
+
+[connection signal="screen_exited" from="VisibilityNotifier2D" to="." method="_on_VisibilityNotifier2D_screen_exited"]
+[connection signal="area_entered" from="Area2D" to="." method="_on_Area2D_area_entered"]
+[connection signal="area_exited" from="Area2D" to="." method="_on_Area2D_area_exited"]
+[connection signal="timeout" from="FallTimer" to="." method="_on_FallTimer_timeout"]
+[connection signal="timeout" from="RefreshTimer" to="." method="_on_RefreshTimer_timeout"]