@tool
extends Node2D

class_name Construction

@export var dimensions : Rect2i = Rect2i(0,0,1,1):
	set(value):
		dimensions = value
		if Engine.is_editor_hint():
			queue_redraw()
	get:
		return dimensions

func _draw() -> void:
	if Engine.is_editor_hint():
		for x in range(dimensions.size.x):
			for y in range(dimensions.size.y):
				draw_circle((dimensions.position+Vector2i(x,y)) * Vector2i(Globals.GRID_SIZE),2,Color.AQUA)

func get_relative(dv : Vector2) -> Construction:
	return get_parent().get_at(global_position+dv)

func can_be_placed(zone : BuildZone) -> bool:
	for dp in get_dimension_points():
			var point = global_position + dp
			if zone.is_global_point_in_zone(point) == false:
				return false
			if zone.entity_holder.is_point_occupied(point):
				return false
	return true

func try_place(zone : BuildZone) -> bool:
	if can_be_placed(zone) == false:
		return false
	
	return zone.entity_holder.add_construction(self)

func get_dimension_points() -> Array[Vector2]:
	var result : Array[Vector2] = []
	result.resize(dimensions.size.x*dimensions.size.y)
	for x in range(dimensions.size.x):
		for y in range(dimensions.size.y):
			result[x + y * dimensions.size.x] = (Vector2(x,y)*Globals.GRID_SIZE + Vector2(dimensions.position))
	return result