// Warp Doors
function main() {
	Self.SetHitbox(0, 0, 34, 76);

	var animating = false;
	var collide = false;

	// Declare animations and sprite names.
	var animSpeed = 100;
	var spriteDefault = "door-1";
	Self.AddAnimation("open", animSpeed, ["door-2", "door-3", "door-4"]);
	Self.AddAnimation("close", animSpeed, ["door-4", "door-3", "door-2", "door-1"]);

	// Find our linked Warp Door.
	var links = Self.GetLinks()
	var linkedDoor = null;
	for (var i = 0; i < links.length; i++) {
		if (links[i].Title.indexOf("Warp Door") > -1) {
			linkedDoor = links[i];
		}
	}

	// The player Uses the door.
	var flashedCooldown = false; // "Locked Door" flashed message.
	Events.OnUse(function (e) {
		if (animating) {
			return;
		}

		// Doors without linked exits are not usable.
		if (linkedDoor === null) {
			if (!flashedCooldown) {
				Flash("This door is locked.");
				flashedCooldown = true;
				setTimeout(function () {
					flashedCooldown = false;
				}, 1000);
			}
			return;
		}

		// Only players can use doors for now.
		if (e.Actor.IsPlayer()) {

			// Freeze the player.
			e.Actor.Freeze()

			// Play the open and close animation.
			animating = true;
			Self.PlayAnimation("open", function () {
				e.Actor.Hide()
				Self.PlayAnimation("close", function () {
					Self.ShowLayerNamed(spriteDefault);
					animating = false;

					// Teleport the player to the linked door. Inform the target
					// door of the arrival of the player so it doesn't trigger
					// to send the player back here again on a loop.
					if (linkedDoor !== null) {
						Message.Publish("warp-door:incoming", e.Actor);
						e.Actor.MoveTo(linkedDoor.Position());
					}
				});
			});
		}
	});

	// Respond to incoming warp events.
	Message.Subscribe("warp-door:incoming", function (player) {
		animating = true;
		player.Unfreeze();
		Self.PlayAnimation("open", function () {
			player.Show();
			Self.PlayAnimation("close", function () {
				animating = false;
			});
		});
	});
}