-- A build ability is used (not yet confirmed)
function Build( event )
local caster = event.caster
local ability = event.ability
local ability_name = ability:GetAbilityName()
local building_name = ability:GetAbilityKeyValues()['UnitName']
local gold_cost = ability:GetGoldCost(1)
local hero = caster:IsRealHero() and caster or caster:GetOwner()
local playerID = hero:GetPlayerID()
-- If the ability has an AbilityGoldCost, it's impossible to not have enough gold the first time it's cast
-- Always refund the gold here, as the building hasn't been placed yet
hero:ModifyGold(gold_cost, false, 0)
-- Makes a building dummy and starts panorama ghosting
BuildingHelper:AddBuilding(event)
-- Additional checks to confirm a valid building position can be performed here
event:OnPreConstruction(function(vPos)
-- Check for minimum height if defined
if not BuildingHelper:MeetsHeightCondition(vPos) then
BuildingHelper:print("Failed placement of " .. building_name .." - Placement is below the min height required")
SendErrorMessage(playerID, "#error_invalid_build_position")
return false
end
-- If not enough resources to queue, stop
if PlayerResource:GetGold(playerID) < gold_cost then
BuildingHelper:print("Failed placement of " .. building_name .." - Not enough gold!")
SendErrorMessage(playerID, "#error_not_enough_gold")
return false
end
return true
end)
-- Position for a building was confirmed and valid
event:OnBuildingPosChosen(function(vPos)
-- Spend resources
hero:ModifyGold(-gold_cost, false, 0)
-- Play a sound
EmitSoundOnClient("DOTA_Item.ObserverWard.Activate", PlayerResource:GetPlayer(playerID))
end)
-- The construction failed and was never confirmed due to the gridnav being blocked in the attempted area
event:OnConstructionFailed(function()
local playerTable = BuildingHelper:GetPlayerTable(playerID)
local building_name = playerTable.activeBuilding
BuildingHelper:print("Failed placement of " .. building_name)
end)
-- Cancelled due to ClearQueue
event:OnConstructionCancelled(function(work)
local building_name = work.name
BuildingHelper:print("Cancelled construction of " .. building_name)
-- Refund resources for this cancelled work
if work.refund then
hero:ModifyGold(gold_cost, false, 0)
end
end)
-- A building unit was created
event:OnConstructionStarted(function(unit)
BuildingHelper:print("Started construction of " .. unit:GetUnitName() .. " " .. unit:GetEntityIndex())
-- Play construction sound
-- If it's an item-ability and has charges, remove a charge or remove the item if no charges left
if ability.GetCurrentCharges and not ability:IsPermanent() then
local charges = ability:GetCurrentCharges()
charges = charges-1
if charges == 0 then
ability:RemoveSelf()
else
ability:SetCurrentCharges(charges)
end
end
-- Units can't attack while building
unit.original_attack = unit:GetAttackCapability()
unit:SetAttackCapability(DOTA_UNIT_CAP_NO_ATTACK)
-- Give item to cancel
unit.item_building_cancel = CreateItem("item_building_cancel", hero, hero)
if unit.item_building_cancel then
unit:AddItem(unit.item_building_cancel)
unit.gold_cost = gold_cost
end
-- FindClearSpace for the builder
FindClearSpaceForUnit(caster, caster:GetAbsOrigin(), true)
caster:AddNewModifier(caster, nil, "modifier_phased", {duration=0.03})
-- Remove invulnerability on npc_dota_building baseclass
unit:RemoveModifierByName("modifier_invulnerable")
end)
-- A building finished construction
event:OnConstructionCompleted(function(unit)
BuildingHelper:print("Completed construction of " .. unit:GetUnitName() .. " " .. unit:GetEntityIndex())
-- Play construction complete sound
-- Remove the item
if unit.item_building_cancel then
UTIL_Remove(unit.item_building_cancel)
end
-- Give the unit their original attack capability
unit:SetAttackCapability(unit.original_attack)
end)
-- These callbacks will only fire when the state between below half health/above half health changes.
-- i.e. it won't fire multiple times unnecessarily.
event:OnBelowHalfHealth(function(unit)
BuildingHelper:print(unit:GetUnitName() .. " is below half health.")
end)
event:OnAboveHalfHealth(function(unit)
BuildingHelper:print(unit:GetUnitName().. " is above half health.")
end)
end
-- Called when the Cancel ability-item is used
function CancelBuilding( keys )
local building = keys.unit
local hero = building:GetOwner()
local playerID = building:GetPlayerOwnerID()
BuildingHelper:print("CancelBuilding "..building:GetUnitName().." "..building:GetEntityIndex())
-- Refund here
if building.gold_cost then
hero:ModifyGold(building.gold_cost, false, 0)
end
-- Eject builder
local builder = building.builder_inside
if builder then
BuildingHelper:ShowBuilder(builder)
end
building:ForceKill(true) --This will call RemoveBuilding
end
-- Requires notifications library from bmddota/barebones
function SendErrorMessage( pID, string )
Notifications:ClearBottom(pID)
Notifications:Bottom(pID, {text=string, style={color='#E62020'}, duration=2})
EmitSoundOnClient("General.Cancel", PlayerResource:GetPlayer(pID))
end
