extends Node2D

var nameCounter = 0;
# creating empty arrays of specific object types Prey and Preditor
var preyCol = Array([], TYPE_OBJECT, "Node", Prey);
var predatorCol = Array([], TYPE_OBJECT, "Node", Predator)

func _ready():
	# Add one prey to the scene at the ready
	preyCol.append(Prey.new(100));
	
func _draw():
	# draw prey as a circle, at the mouse position! 
	var PreyPos = get_global_mouse_position();
	draw_circle(PreyPos, 40, Color.WHITE);
	
	# for each predator, we draw a rectangle, and sets is movement to 'chase' after the prey.
	for item in predatorCol:
		draw_rect(Rect2(item.getPos(), item.getSize()), item.getColor(), true);
		item.moveControl(item, PreyPos);
	

func _input(event):
	# when an accept button is pressed (enter/space), we add a new Predator to the scene
	if event.is_action_pressed("ui_accept"):
		# Append new Predator to array, to have all Predators located in one collection.
		# we use the 'new' function to instantiate a new Predator, from the Predator class.
		predatorCol.append(Predator.new(str(nameCounter)));
		# sets starting position, size and color for the newly created predator.
		# we get the latest added predator to the collection using -1 as an index value!
		predatorCol[-1].setPos(Vector2(-25,-25));
		predatorCol[-1].setSize(Vector2(50,50));
		predatorCol[-1].setColor(Color.ORANGE_RED);
		nameCounter = nameCounter + 1;

func _process(delta):
	# process function updates the canvas draw with the queue_redraw function
	queue_redraw();