extends TileMap

var GridSize = 33
var Dic = {}
var Building_Mode := false
var Drag_Mode := false

func generate_percentage(percentages: Array):
	var array_length = 0
	for percentage in percentages.size():
		if percentages[percentage] < 0:
			percentages[percentage] = 0
		array_length += percentages[percentage]
		
	var arr: Array
	arr.resize(array_length)
	var sum = 0
	for percentage in percentages.size():
		for num in percentages[percentage]:
			arr[num + sum] = percentage
		sum += percentages[percentage]
	return arr[randi()%array_length] + 1

func abs(num: int):
	if num < 0:
		num = -num
	return num

func _ready():
	Triggerer.listen("select_building", select_building)
	Triggerer.listen("drag_building", drag_building)
	
	for x in GridSize:
		for y in GridSize:
			var layer_number: int
			var x_value: int = abs(GridSize/2 - x)
			var y_value: int = abs(GridSize/2 - y)
			var max_value: int = maxi(x_value, y_value)
			match max_value:
				16,15:
					layer_number = 1
				14:
					layer_number = generate_percentage([3,1])
				13:
					layer_number = generate_percentage([2,1])
				12:
					layer_number = generate_percentage([1,1])
				11:
					layer_number = generate_percentage([1,2,1])
				10:
					layer_number = generate_percentage([0,3,2])
				9:
					layer_number = generate_percentage([0,1,1])
				8:
					layer_number = generate_percentage([0,1,2,1])
				7:
					layer_number = generate_percentage([0,0,3,2])
				6:
					layer_number = generate_percentage([0,0,1,1])
				5:
					layer_number = generate_percentage([0,0,1,2,1])
				4:
					layer_number = generate_percentage([0,0,0,3,2])
				3:
					layer_number = generate_percentage([0,0,0,1,1])
				2:
					layer_number = generate_percentage([0,0,0,1,2])
				1,0:
					layer_number = 5
			print("x- ",x," y- ",y," layer- ",layer_number)
			for layer in layer_number:
				set_cell(layer, Vector2(x, y), 2, Vector2i(1, 1), 0)
			Dic[str(Vector2(x,y))] = {
					"Layer": layer_number,
					"Placed": false
			}

func _process(delta):
	if Input.is_action_just_released("lclick"):
		release_mouse()
	
	if Building_Mode:
		var tile = local_to_map(get_global_mouse_position())
		
		for x in GridSize:
			for y in GridSize:
				if !Dic[str(Vector2(x,y))].get("Placed"):
					erase_cell(Dic[str(Vector2(x,y))].get("Layer"), Vector2(x,y))
		
		if Dic.has(str(tile)):
			set_cell(Dic[str(tile)].get("Layer"), tile, 1, Vector2i(0,0), 0)


func _on_mouse_handler_clicked():
	if Building_Mode:
		place_building()
	else:
		show_info_building()


func show_info_building():
	var tile = local_to_map(get_global_mouse_position())
	if Dic[str(tile)]["Placed"]:
		Triggerer.trigger("show_info", Dic[str(tile)])

func select_building(data):
	Building_Mode = true
	for x in GridSize:
		for y in GridSize:
			if !Dic[str(Vector2(x,y))].get("Placed"):
				erase_cell(Dic[str(Vector2(x,y))].get("Layer"), Vector2(x,y))


func drag_building(data):
	Building_Mode = true
	Drag_Mode = true


func release_mouse():
	if Drag_Mode and Building_Mode:
		place_building()
		Drag_Mode = false


func place_building():
	var tile = local_to_map(get_global_mouse_position())
	Building_Mode = false
	Dic[str(tile)]["Placed"] = true


func _on_mouse_handler_rclicked():
	Building_Mode = false
	for x in GridSize:
		for y in GridSize:
			if !Dic[str(Vector2(x,y))].get("Placed"):
				erase_cell(Dic[str(Vector2(x,y))].get("Layer"), Vector2(x,y))