1 files changed, 142 insertions, 0 deletions
diff --git a/Scenes/Utilities.gd b/Scenes/Utilities.gd
new file mode 100644
index 0000000..f9485ff
--- /dev/null
+++ b/Scenes/Utilities.gd
@@ -0,0 +1,142 @@
+extends Node
+
+
+const TILE_SIZE = 16
+const SCREEN_FADE_DURATION = 0.25
+
+
+func get_level_position(scene) -> Vector2:
+	return self.from_position_to_grid(scene.position)
+	#var x = floor(scene.position.x / 16)
+	#var y = floor(scene.position.y / 16)
+	
+	#return Vector2(x, y)
+
+
+func get_level_position_grid(scene) -> Vector2:
+	return self.from_grid_to_position(self.from_position_to_grid(scene.position))
+	#return (self.get_level_position(scene) * self.TILE_SIZE) + Vector2(self.TILE_SIZE / 2, self.TILE_SIZE / 2)
+
+
+func from_position_to_grid(position: Vector2) -> Vector2:
+	return floor(position / self.TILE_SIZE)
+
+
+func from_grid_to_position(grid_position: Vector2) -> Vector2:
+	return (grid_position * self.TILE_SIZE) + Vector2(self.TILE_SIZE / 2.0, self.TILE_SIZE / 2.0)
+
+
+func change_scene(scene):
+	get_tree().root.add_child(scene)
+	get_tree().current_scene.queue_free()
+	get_tree().current_scene = scene
+
+
+func change_scene_with_fade(scene):
+	self.change_scene(scene)
+	self.fade_screen(Color(0, 0, 0, 1), Color(0, 0, 0, 0))
+
+
+func change_scene_with_player_to_position(
+	scene: Node2D, player: Player, targetPlayerPositionNodePath: NodePath
+):
+	Global.player = player
+	Global.last_area = null
+	
+	var targetPlayerPositionNode = scene.get_node(targetPlayerPositionNodePath)
+	player.position = targetPlayerPositionNode.position
+	scene.add_child(player)
+	
+	call_deferred("change_scene_with_fade", scene)
+
+
+func fade_screen(from: Color, to: Color, duration: float = SCREEN_FADE_DURATION) -> Tween:
+	var canvas = CanvasLayer.new()
+	var rect = ColorRect.new()
+	rect.color = from
+	rect.size = get_viewport().get_visible_rect().size
+	canvas.add_child(rect)
+	get_tree().root.add_child(canvas)
+	
+	Global.player.set_process(false)
+	var tween = get_tree().create_tween()
+	tween.tween_property(rect, "color", to, duration)
+	tween.tween_callback(func():
+		get_tree().root.remove_child(canvas)
+		Global.player.set_process(true)
+	)
+	
+	return tween
+
+
+func get_collision_shape_bounds(collision_shape: CollisionShape2D):
+	var shape: Shape2D = collision_shape.shape
+	var bounds
+	
+	if shape is RectangleShape2D:
+		bounds = Rect2(
+			collision_shape.position - shape.get_rect().size/2,
+			shape.get_rect().size
+		)
+	
+	return bounds
+
+
+func add_collision_area(node: Node2D, original_collision_shape: Node2D):
+	var collision_area = Collision.Area.new(node, original_collision_shape)
+	
+	# add area to node
+	node.add_child(collision_area)
+	
+	return collision_area
+
+
+class Collision:
+	class Area extends Area2D:
+		signal collided
+		
+		func _init(node: Node2D, original_collision_shape: Node2D, expand: bool = true):
+			self.name = "CollisionArea"
+			super()
+			
+			# setup area
+			self.collision_layer = node.collision_layer
+			self.collision_mask = node.collision_mask
+			
+			for group in node.get_groups():
+				self.add_to_group(group)
+			
+			self.connect("area_entered", func(area): emit_signal("collided", area))
+			
+			# copy shape and expand it
+			var collision_shape = original_collision_shape.duplicate()
+			if collision_shape is CollisionShape2D:
+				var shape = collision_shape.shape.duplicate()
+				
+				if expand:
+					if shape is RectangleShape2D:
+						shape.set_size(shape.get_size() + Vector2(1, 1))
+					elif shape is CapsuleShape2D:
+						shape.set_height(shape.get_height() + 1)
+						shape.set_radius(shape.get_radius() + 1)
+					
+				collision_shape.set_shape(shape)
+				
+			elif collision_shape is CollisionPolygon2D:
+				var polygon = collision_shape.polygon.duplicate()
+				
+				if expand:
+					pass
+				
+				collision_shape.set_polygon(polygon)
+				pass
+				
+			self.add_child(collision_shape)
+	
+	
+	class Layer:
+		const PLAYER = 2
+		const BOMB = 3
+		const SOLID = 4
+		const ENEMY = 5
+		const EXPLOSION = 6