package BasicSpells
import PhysicsProjectile
import ChannelAbilityPreset
import ItemObjEditing
import initlater Ball
import BuilderConstants

public constant BALL_SPELL_ID = compiletime(ABIL_ID_GEN.next())
public constant BALL_ITEM_ID = compiletime(ABIL_ID_GEN.next())

public class BallProjectile extends AirPhysicsProjectile
	BallItem ballitem

	construct(unit caster, vec2 target, BallItem itm)
		super(caster.getPos3with(128), 32, caster.getOwner(), caster.getPos().angleTo(target), "Cannonball.mdx")
		setSpeed(17)
		fx.setTintFromPlayer(caster.getOwner())
		setMass(145)
		setRestitution(0.625)
		ballitem = itm

	override function update()
		super.update()
		let lensq = vel.lengthSquared()
		if lensq < 1
			ballitem.onIdle(pos.toVec2())
			silent = true
			terminate()


function onCast()
	let id = GetSpellAbilityId()
	if id == BALL_SPELL_ID
		let caster = GetSpellAbilityUnit()
		let tpos = EventData.getSpellTargetPos()
		caster.removeAbility(BALL_SPELL_ID)
		item itm = null
		for i = 0 to 5
			let itm2 = UnitItemInSlot(caster, i)
			if itm2.getTypeId() == BALL_ITEM_ID
				itm = itm2
				caster.removeItem(itm2)
				break
		if itm != null
			new BallProjectile(caster, tpos, itm.getEntity() castTo BallItem)

init
	EventListener.add(EVENT_PLAYER_UNIT_SPELL_CAST, () -> onCast())

@objectgen function genAbils()
	new ChannelAbilityPreset(BALL_SPELL_ID, 1, true)
	..setHeroAbility(false)
	..setName("Throw a ball")
	..presetTooltipNormal(lvl -> "Throw Ball")
	..presetTargetTypes(Targettype.POINT)
	..presetCastRange(lvl -> 300.)
	..presetManaCost(lvl -> 0)
	..presetHotkey("K")
	..presetButtonPosNormal(1,1)
	..presetIcon("BTNGolemStormBolt")

	new ItemDefinition(BALL_ITEM_ID, 'rst1')
	..setGoldCost(0)..setLumberCost(0)
	..setAbilities("")..setName("Ball")..setDescription("Throwable.")
	..setTooltipExtended("It is round")
	..setDroppedWhenCarrierDies(false)
	..setTooltipBasic("Do eet")..setModelUsed("Cannonball.mdx")
	..setInterfaceIcon(Icons.bTNGolemStormBolt)