出手一击：挥出去的刀和挨上去的疼

mir8-combat

function gameActor:PlayAttack(targetID)
    local atkFrames = self:GetFrameCount(global.MMO.ANIM_ATTACK, self._dir)
    self._hitFrame = math.floor(atkFrames * 0.55)      -- 命中帧取动作的55%处
    self._hitTarget = targetID
    self:PlayAction(global.MMO.ANIM_ATTACK)
end

function gameActor:OnFrameAdvance(frameIndex)
    if self._act ~= global.MMO.ANIM_ATTACK then return end
    if frameIndex == self._hitFrame then               -- 刀落帧: 三件事同帧发生
        global.Facade:sendNotification(global.NoticeTable.ActorAttackHit, {
            attacker = self:GetID(),
            target   = self._hitTarget
        })
        self._hitTarget = nil
    end
end

-- 受击方: 收到即播, 死亡播完留尸
function gameActor:OnAttackHit(data)
    if data.target ~= self:GetID() then return end
    self._hp = self._hp - data.damage
    if self._hp <= 0 then
        self._dieKeepLast = true                       -- 死亡停在末帧
        self:PlayAction(global.MMO.ANIM_DIE)
        self:OnActorDead()
    else
        self:PlayAction(global.MMO.ANIM_STUCK)         -- 受击: 短促两帧
    end
end