package TrooperTower
import Tower
import public Entity
import Heightmap

constant DUMMY_DIST = 15.
public constant TOWER_TROOPER_ID = 'h01E'
constant TROOP_ID = 'h01F'
constant TROOPG_ID = 'h02D'

trigger tupgradestart
trigger tupgradecancel


public class TroopGround extends UnitEntity

	construct (vec3 pos, player owner)
		super(createUnitZ(owner, TROOPG_ID, pos, angle(0)))
		setXY(pos)

public class Troop extends UnitEntity

	construct (vec3 pos, player owner)
		super(createUnitZ(owner, TROOP_ID, pos, angle(0)))
		deactivate()
		actor.addAbility(LOCUST_ID)
		actor.setPropWindow(0 .fromDeg())

	ondestroy
		if not IsUnitHidden(actor)
			SetUnitExploded(actor, true)
		actor.setEntity(null)
		KillUnit(actor)
		actor.remove()

public class TrooperTower extends Tower
	let troops = new LinkedList<Troop>()
	int level = 0

	construct (Tower t)
		super(t)
		addTrooper()
		addTrooper()
		addTrooper()
		EventListener.add(actor, EVENT_PLAYER_UNIT_UPGRADE_START) ->
			onUpgradeStart()
		EventListener.add(actor, EVENT_PLAYER_UNIT_UPGRADE_CANCEL) ->
			onUpgradeCancel()

	override function onUpgrade()
		level++
		addTrooper()
		actor.issueImmediateOrder("stop")

	override function onAttack(UnitEntity target)
		for troop in troops
			troop.actor.issueTargetOrder("smart", target.actor)

	function onUpgradeStart()
		for troop in troops
			troop.actor.setVertexColor(COLOR_BLACK)
			troop.actor.pause()

	function onUpgradeCancel()
		for troop in troops
			troop.actor.setVertexColor(COLOR_WHITE)
			troop.actor.unpause()
			troop.setXY(troop.pos)

	function addTrooper()
		troops.add(new Troop(pos, owner))
		// Make into circle
		let angleV = 360. / troops.size()
		var angleD = 0.
		for troop in troops
			let tpos = getPos().toVec2().polarOffset(angleD.asAngleDegrees(), DUMMY_DIST).withZ(pos.getHeightMap() + 160.)
			troop.actor..setVertexColor(COLOR_WHITE)
			..unpause()
			..setFacing(angleD.asAngleDegrees())
			..addAbility(LOCUST_ID)
			troop.setXY(tpos)
			angleD += angleV

	override function pause()
		super.pause()
		for troop in this.troops
			troop.actor.pause()

	override function unpause()
		super.unpause()
		for troop in this.troops
			troop.actor.unpause()

	ondestroy
		for trooper in troops
			new TroopGround(trooper.pos, trooper.owner)
			trooper.terminate()
		destroy troops