ability_item_usage_drow_ranger.lua

----------------------------------------------------------------------------
--	Ranked Matchmaking AI v1.3 New Structure
--	Author: adamqqq		Email:adamqqq@163.com
----------------------------------------------------------------------------
--------------------------------------
-- General Initialization
--------------------------------------
local utility = require(GetScriptDirectory() .. "/utility")
local ability_item_usage_generic = require(GetScriptDirectory() .. "/ability_item_usage_generic")
local AbilityExtensions = require(GetScriptDirectory() .. "/util/AbilityAbstraction")


local debugmode = false
local npcBot = GetBot()
if npcBot == nil or npcBot:IsIllusion() then
	return
end

local Talents = {}
local Abilities = {}
local AbilitiesReal = {}

ability_item_usage_generic.InitAbility(Abilities, AbilitiesReal, Talents)

local AbilityToLevelUp =
{
	Abilities[1],
	Abilities[3],
	Abilities[1],
	Abilities[3],
	Abilities[2],
	Abilities[5],
	Abilities[3],
	Abilities[3],
	Abilities[1],
	"talent",
	Abilities[1],
	Abilities[5],
	Abilities[2],
	Abilities[2],
	"talent",
	Abilities[2],
	"nil",
	Abilities[5],
	"nil",
	"talent",
	"nil",
	"nil",
	"nil",
	"nil",
	"talent",
}

local TalentTree = {
	function()
		return Talents[2]
	end,
	function()
		return Talents[3]
	end,
	function()
		return Talents[5]
	end,
	function()
		return Talents[7]
	end
}

-- check skill build vs current level
utility.CheckAbilityBuild(AbilityToLevelUp)

function BuybackUsageThink()
	ability_item_usage_generic.BuybackUsageThink();
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink();
end

function AbilityLevelUpThink()
	ability_item_usage_generic.AbilityLevelUpThink2(AbilityToLevelUp, TalentTree)
end

--------------------------------------
-- Ability Usage Thinking
--------------------------------------
local cast = {}
cast.Desire = {}
cast.Target = {}
cast.Type = {}
local Consider = {}
local CanCast = { AbilityExtensions.PhysicalCanCastFunction, function(t)
	return AbilityExtensions:StunCanCast(t, AbilitiesReal[2], false, false)
end, AbilityExtensions.PhysicalCanCastFunction, utility.UCanCast }
local enemyDisabled = utility.enemyDisabled

function GetComboDamage()
	return ability_item_usage_generic.GetComboDamage(AbilitiesReal)
end

function GetComboMana()
	return ability_item_usage_generic.GetComboMana(AbilitiesReal)
end

Consider[1] = function()
	local abilityNumber = 1
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() or AbilityExtensions:IsPhysicalOutputDisabled(npcBot) then
		return 0
	end

	local CastRange = ability:GetCastRange()
	local enemys = npcBot:GetNearbyHeroes(CastRange + 100, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)

	local function UseAt(target)
		if not CanCast[abilityNumber](target) then
			return false
		end
		if target:IsHero() then
			if AbilityExtensions:IsAttackingEnemies(npcBot) and npcBot:WasRecentlyDamagedByAnyHero(1) then
				return false
			end
			local modifier = target:GetModifierByName("modifier_drow_ranger_frost_arrows_slow")
			if modifier ~= -1 and target:GetModifierRemainingDuration(modifier) > npcBot:GetAttackSpeed() / 100 * 0.7 / 1.7 + 0.2 then
				return AbilityExtensions:GetManaPercent(npcBot) >= 0.65
			end
			if AbilityExtensions:MustBeIllusion(npcBot, target) then
				return (AbilityExtensions:GetManaPercent(npcBot) >= 0.8 or AbilityExtensions:GetHealthPercent(target) <= 0.4) and
					GetUnitToUnitDistanceSqr(npcBot, target) >= 190000
			else
				return AbilityExtensions:GetManaPercent(npcBot) >= 0.3 or
					AbilityExtensions:GetManaPercent(npcBot) >= 0.2 and GetUnitToUnitDistanceSqr(npcBot, target) >= 190000
			end
		elseif target:IsBuilding() then
			return false
		else
			return AbilityExtensions:GetManaPercent(npcBot) >= 0.8
		end
		return 0
	end

	local attackRange = npcBot:GetAttackRange()
	if AbilityExtensions:NotRetreating(npcBot) then
		if npcBot:GetActiveMode() == BOT_MODE_LANING then
			local creeps = npcBot:GetNearbyLaneCreeps(attackRange + 120, true)
			local allyCreeps = npcBot:GetNearbyLaneCreeps(attackRange + 120, false)
			if creeps and #creeps > 0 or allyCreeps and #allyCreeps > 0 then
				return false
			end
		end

		local target = npcBot:GetAttackTarget()
		if target == nil then
			if WeakestEnemy ~= nil then
				local b = UseAt(WeakestEnemy)
				if b then
					return BOT_ACTION_DESIRE_MODERATE, WeakestEnemy
				else
					return false
				end
			end
		else
			return UseAt(target)
		end
	end
	return false
end
Consider[1] = AbilityExtensions:ToggleFunctionToAutoCast(npcBot, AbilitiesReal[1], Consider[1])

Consider[2] = function()
	local abilityNumber = 2
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();
	local Radius = ability:GetAOERadius()
	local CastPoint = ability:GetCastPoint()


	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(CastRange + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)

	--try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[abilityNumber](WeakestEnemy))
			then
				if (
					HeroHealth <= WeakestEnemy:GetActualIncomingDamage(Damage, DAMAGE_TYPE_MAGICAL) or
						(
						HeroHealth <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_MAGICAL) and
							npcBot:GetMana() > ComboMana))
				then
					return BOT_ACTION_DESIRE_HIGH,
						utility.GetUnitsTowardsLocation(npcBot, WeakestEnemy, GetUnitToUnitDistance(npcBot, WeakestEnemy) + 100),
						"Location"
				end
			end
		end
	end

	-- Check for a channeling enemy
	for _, npcEnemy in pairs(enemys) do
		if AbilityExtensions:IsChannelingAbility(npcEnemy) and CanCast[abilityNumber](npcEnemy) then
			return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetLocation(), "Location"
		end
	end
	--------------------------------------
	-- Mode based usage
	--------------------------------------
	-- If we're seriously retreating, see if we can land a stun on someone who's damaged us recently
	if (
		(npcBot:GetActiveMode() == BOT_MODE_RETREAT and npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH) or
			(npcBot:WasRecentlyDamagedByAnyHero(2.0) and #enemys >= 1))
	then
		local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
		if (locationAoE.count >= 2)
		then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc, "Location"
		end

		for _, npcEnemy in pairs(enemys) do
			if (npcBot:WasRecentlyDamagedByHero(npcEnemy, 3.0) and GetUnitToUnitDistance(npcBot, npcEnemy) <= 400)
			then
				return BOT_ACTION_DESIRE_HIGH, npcEnemy:GetExtrapolatedLocation(CastPoint), "Location"
			end
		end
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, CastPoint, 0);
		if (locationAoE.count >= 2)
		then
			return BOT_ACTION_DESIRE_LOW, locationAoE.targetloc, "Location"
		end

		local npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			if (
				CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy) and
					GetUnitToUnitDistance(npcBot, npcEnemy) <= CastRange)
			then
				return BOT_ACTION_DESIRE_MODERATE,
					utility.GetUnitsTowardsLocation(npcBot, npcEnemy, GetUnitToUnitDistance(npcBot, npcEnemy) + 100), "Location"
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end

Consider[3] = function()
	local abilityNumber = 3
	--------------------------------------
	-- Generic Variable Setting
	--------------------------------------
	local ability = AbilitiesReal[abilityNumber];

	if not ability:IsFullyCastable() then
		return BOT_ACTION_DESIRE_NONE, 0;
	end

	local CastRange = ability:GetCastRange();
	local Damage = ability:GetAbilityDamage();
	local Radius = ability:GetAOERadius()


	local allys = npcBot:GetNearbyHeroes(1200, false, BOT_MODE_NONE);
	local enemys = npcBot:GetNearbyHeroes(CastRange + 300, true, BOT_MODE_NONE)
	local WeakestEnemy, HeroHealth = utility.GetWeakestUnit(enemys)
	local creeps = npcBot:GetNearbyCreeps(CastRange + 300, true)
	local WeakestCreep, CreepHealth = utility.GetWeakestUnit(creeps)
	--------------------------------------
	-- Global high-priorty usage
	--------------------------------------
	--Try to kill enemy hero
	if (npcBot:GetActiveMode() ~= BOT_MODE_RETREAT)
	then
		if (WeakestEnemy ~= nil)
		then
			if (CanCast[abilityNumber](WeakestEnemy))
			then
				if (
					HeroHealth <= WeakestEnemy:GetActualIncomingDamage(Damage, DAMAGE_TYPE_MAGICAL) or
						(
						HeroHealth <= WeakestEnemy:GetActualIncomingDamage(GetComboDamage(), DAMAGE_TYPE_MAGICAL) and
							npcBot:GetMana() > ComboMana))
				then
					return BOT_ACTION_DESIRE_HIGH, WeakestEnemy:GetLocation(), "Location"
				end
			end
		end
	end

	--------------------------------------
	-- Mode based usage
	--------------------------------------
	-- If we're seriously retreating, see if we can land a stun on someone who's damaged us recently
	if (npcBot:GetActiveMode() == BOT_MODE_RETREAT and npcBot:GetActiveModeDesire() >= BOT_MODE_DESIRE_HIGH)
	then
		for _, npcEnemy in pairs(enemys) do
			if (npcBot:WasRecentlyDamagedByHero(npcEnemy, 2.0))
			then
				if (CanCast[abilityNumber](npcEnemy) and not enemyDisabled(npcEnemy))
				then
					return BOT_ACTION_DESIRE_MODERATE, npcEnemy:GetLocation(), "Location"
				end
			end
		end
	end

	-- If we're farming and can hit 2+ creeps
	if (npcBot:GetActiveMode() == BOT_MODE_FARM)
	then
		if (ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana)
		then
			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, 0, 0);
			if (locationAoE.count >= 3)
			then
				return BOT_ACTION_DESIRE_MODERATE - 0.03, locationAoE.targetloc, "Location";
			end
		end
	end

	-- If we're pushing or defending a lane and can hit 4+ creeps, go for it
	if (npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_PUSH_TOWER_BOT or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_TOP or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_MID or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_TOWER_BOT)
	then
		if (ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana)
		then
			local locationAoE = npcBot:FindAoELocation(true, false, npcBot:GetLocation(), CastRange, Radius, 0, 0);
			if (locationAoE.count >= 3)
			then
				return BOT_ACTION_DESIRE_MODERATE - 0.03, locationAoE.targetloc, "Location";
			end
		end
	end


	-- If my mana is enough,use it at enemy
	if (npcBot:GetActiveMode() == BOT_MODE_LANING)
	then
		if ((ManaPercentage > 0.4 or npcBot:GetMana() > ComboMana) and ability:GetLevel() >= 2)
		then
			if (WeakestEnemy ~= nil)
			then
				if (CanCast[abilityNumber](WeakestEnemy))
				then
					return BOT_ACTION_DESIRE_LOW, WeakestEnemy:GetLocation(), "Location"
				end
			end
		end
	end

	-- If we're going after someone
	if (npcBot:GetActiveMode() == BOT_MODE_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_TEAM_ROAM or
		npcBot:GetActiveMode() == BOT_MODE_DEFEND_ALLY or
		npcBot:GetActiveMode() == BOT_MODE_ATTACK)
	then
		local locationAoE = npcBot:FindAoELocation(true, true, npcBot:GetLocation(), CastRange, Radius, 0, 0);
		if (locationAoE.count >= 2)
		then
			return BOT_ACTION_DESIRE_MODERATE, locationAoE.targetloc, "Location"
		end

		local npcEnemy = npcBot:GetTarget();

		if (npcEnemy ~= nil)
		then
			if (not enemyDisabled(npcEnemy) and GetUnitToUnitDistance(npcBot, npcEnemy) < CastRange + 75 * #allys)
			then
				return BOT_ACTION_DESIRE_MODERATE, npcEnemy:GetLocation(), "Location"
			end
		end
	end

	return BOT_ACTION_DESIRE_NONE, 0;

end

AbilityExtensions:AutoModifyConsiderFunction(npcBot, Consider, AbilitiesReal)
function AbilityUsageThink()

	-- Check if we're already using an ability
	if (npcBot:IsUsingAbility() or npcBot:IsChanneling() or npcBot:IsSilenced())
	then
		return
	end

	ComboMana = GetComboMana()
	AttackRange = npcBot:GetAttackRange()
	ManaPercentage = npcBot:GetMana() / npcBot:GetMaxMana()
	HealthPercentage = npcBot:GetHealth() / npcBot:GetMaxHealth()

	cast = ability_item_usage_generic.ConsiderAbility(AbilitiesReal, Consider)
	---------------------------------debug--------------------------------------------
	if (debugmode == true)
	then
		ability_item_usage_generic.PrintDebugInfo(AbilitiesReal, cast)
	end
	ability_item_usage_generic.UseAbility(AbilitiesReal, cast)
end

function CourierUsageThink()
	ability_item_usage_generic.CourierUsageThink()
end