package Knockbacker
import Escaper
import EscaperKillers
import ChannelAbilityPreset
import Abilities

public constant KNOCKBACKER_ID = 'knck'
public constant KNOCK_INC_ID = compiletime(ABIL_ID_GEN.next())
public constant KNOCK_DEC_ID = compiletime(ABIL_ID_GEN.next())
public constant DMG_INC_ID = compiletime(ABIL_ID_GEN.next())
public constant DMG_DEC_ID = compiletime(ABIL_ID_GEN.next())

public class Knockbacker extends EscaperSensorSetup
	let kforce = new ConfigValue(20, 2.5, "Knockback")
	let damage = new ConfigValue(50, 25, "Damage")

	construct(unit existing)
		super(existing, 78., 164.)
		setup..addAbility(KNOCK_INC_ID)..addAbility(KNOCK_DEC_ID)
		..addAbility(DMG_INC_ID)..addAbility(DMG_DEC_ID)
		EventListener.add(setup, EVENT_PLAYER_UNIT_SPELL_CAST, () -> onCast())

	construct(vec2 pos, player owner, angle facing)
		super(pos.toVec3(), owner, KNOCKBACKER_ID, facing, 64., 160.)
		setup..addAbility(KNOCK_INC_ID)..addAbility(KNOCK_DEC_ID)
		..addAbility(DMG_INC_ID)..addAbility(DMG_DEC_ID)
		EventListener.add(setup, EVENT_PLAYER_UNIT_SPELL_CAST, () -> onCast())

	function onCast() returns boolean
		let id = GetSpellAbilityId()
		switch id
			case KNOCK_INC_ID
				kforce.increment(this, 75)
			case KNOCK_DEC_ID
				kforce.decrement(this, -75)
			case DMG_INC_ID
				damage.increment(this, 500)
			case DMG_DEC_ID
				damage.decrement(this, 0)
		return false

	override function onSensor(UnitEntity source, UnitEntity target)
		if target instanceof Escaper
			if target.pos.z <= sensorHeight
				let escaper = target castTo Escaper
				let epos = escaper.getPos() - escaper.getRealVel()
				let epos2 = escaper.getPos() + escaper.getRealVel()
				let ang = pos.angleTo2d((epos + epos2) * 0.5)
				escaper.addVel(ang.toVec(kforce.get()).toVec3())
				actor.damageTarget(escaper.actor, damage.get())
				actor.setAnimation("attack")
				setup.setAnimation("attack")
				addEffect(Abilities.warStompCaster, escaper.pos).destr()

	override function serialize() returns Json
		let json = super.serialize()
		json
		..addProperty(new Property(KEY_TYPE, KNOCKBACKER_INDEX.toString()))
		return json

	ondestroy
		destroy kforce
		destroy damage


@objectgen function genKnockbacker()
	let inc_spell = new ChannelAbilityPreset(KNOCK_INC_ID, 1, true)
	inc_spell..presetManaCost(lvl -> 0)
	..setHeroAbility(false)
	..presetCooldown(lvl -> 0)
	..setName("Knockbacker: Increase Knockback")
	..presetIcon("ReplaceableTextures\\CommandButtons\\BTNknockbackincrease.blp")
	..presetHotkey("A")
	..presetTooltipNormal(lvl -> "Increase Knockback [|cffFFCC00A|r]")
	..presetTooltipNormalExtended(lvl -> "More strength to the tauren")
	..presetButtonPosNormal(1, 1)

	let dec_spell = new ChannelAbilityPreset(KNOCK_DEC_ID, 1, true)
	dec_spell..presetManaCost(lvl -> 0)
	..setHeroAbility(false)
	..presetCooldown(lvl -> 0)
	..setName("Knockbacker: Decrease Knockback")
	..presetIcon("ReplaceableTextures\\CommandButtons\\BTNknockbackdecrease.blp")
	..presetHotkey("D")
	..presetTooltipNormal(lvl -> "Decrease Knockback [|cffFFCC00D|r]")
	..presetTooltipNormalExtended(lvl -> "Less strength to the tauren")
	..presetButtonPosNormal(2, 1)

	let inc_spelld = new ChannelAbilityPreset(DMG_INC_ID, 1, true)
	inc_spelld..presetManaCost(lvl -> 0)
	..setHeroAbility(false)
	..presetCooldown(lvl -> 0)
	..setName("Knockbacker: Increase Damage")
	..presetIcon("ReplaceableTextures\\CommandButtons\\BTNReplay-Speedup.blp")
	..presetHotkey("R")
	..presetTooltipNormal(lvl -> "Increase Damage [|cffFFCC00R|r]")
	..presetTooltipNormalExtended(lvl -> "Increases damage output")
	..presetButtonPosNormal(3, 0)

	let dec_spelld = new ChannelAbilityPreset(DMG_DEC_ID, 1, true)
	dec_spelld..presetManaCost(lvl -> 0)
	..setHeroAbility(false)
	..presetCooldown(lvl -> 0)
	..setName("Knockbacker: Decrease Knockback")
	..presetIcon("ReplaceableTextures\\CommandButtons\\BTNReplay-Speeddown.blp")
	..presetHotkey("F")
	..presetTooltipNormal(lvl -> "Decrease Damage [|cffFFCC00F|r]")
	..presetTooltipNormalExtended(lvl -> "Less strength to the tauren")
	..presetButtonPosNormal(3, 1)

	new UnitDefinition(KNOCKBACKER_ID, 'ugho')
	..setAttacksEnabled(0)
	..setTargetedAs("air")
	..setAnimationCastBackswing(0)
	..setScalingValue(0.8)
	..setIconGameInterface("ReplaceableTextures\\CommandButtons\\BTNTauren.blp")
	..setButtonPositionX(3)
	..setButtonPositionY(2)
	..setModelFile("units\\orc\\Tauren\\Tauren.mdl")
	..setSelectionScale(0.5)
	..setUnitSoundSet("")
	..setCollisionSize(0)
	..setSpeedBase(180)
	..setNormalAbilities(commaList('A01H', 'A01E', REMOVE_OBJECT_ID, GHOST_VIS_ID, INVULNERABILITY_ID))
	..setHotkey("C")
	..setName("|cffA56308Knockbacker")
	..setTooltipBasic("Train Knockbacker [C]")
	..setTooltipExtended("Spawns a Glaive at|cffFFCC00 Rallypoint|n|n|cffD64219Kills Escapers")
	..setUpgradesUsed("")
	..setCanFlee(false)
	..setHitPointsMaximumBase(100000000)
	..setSightRadiusDay(0)
	..setSightRadiusNight(0)
	..setGoldCost(0)
	..setFoodCost(0)
	..setHideMinimapDisplay(true)