【引擎触发】沙巴克城门：攻城机关与城门血量的引擎实现

local GATE_HP = 1000000
function Siege.spawnGate()
    local gate = QF_SpawnBuilding("shabake_gate", 210, 188)
    gate.hp = GATE_HP
    gate:SetAttackable(true)
    gate:SetRepairable(true)
    gate.onDestroyed = Siege.gateBroken
    return gate
end

function Siege.gateBroken(gate, attackerGuild)
    gate:SetAttackable(false)
    QF_OpenDoor("shabake_gate")
    QF_Broadcast(attackerGuild .. " 攻破了沙巴克城门！")
    Siege.unlockPhase("palace")
end

function Siege.repairGate(gate, defender)
    if gate.hp >= GATE_HP then return false, "城门完好无损" end
    if not defender:HasItemByName("木材") then return false, "需要木材" end
    defender:TakeItemByName("木材", 1)
    gate.hp = math.min(gate.hp + 50000, GATE_HP)
    return true
end