extends Node2D

var Pheromone = preload("res://pheromone.tscn")
var PheromoneScene = preload("res://pheromone.tscn")

var pheromoneSet = preload("res://pheromones_tileset.tres")
onready var PheromoneMap := .get_parent().get_node("Pheromones")
onready var tilemap := .get_parent().get_node("TileMap")

var pheromones = {}

# Called when the node enters the scene tree for the first time.
func _ready():
	pass # Replace with function body.

func get_intensity(pos : Vector2):
	var intensity := 0
	if pheromones.has(pos):
		return pheromones[pos].intensity

func addPheromone(pher):
	var pos = pher.tilePos
	# if food was marked on this tile, don't add "search" or any other marker
	if pheromones.has(pos) and pheromones[pos].type == "food":
		return
	
	if pheromones.has(pos):
		pheromones[pos].intensity += pher.intensity
		if pher.closeToHome > pheromones[pos].closeToHome:
			pheromones[pos].closeToHome = pher.closeToHome
		if pher.type == "food":
			pheromones[pos].type = "food"
	else:
		pheromones[pos] = pher
	add_child(pher)
	PheromoneMap.set_cellv(pos, pheromoneSet.find_tile_by_name(pher.type))
	
	
func removePheromone(pher):
	var pos = pher.tilePos
	if pheromones.has(pos):
		pheromones.erase(pos)
	PheromoneMap.set_cellv(pos, -1)