地裂冲锋：从脚下裂到敌人脚下

fx-quake

function skillQuake:Cast(caster)
    caster:PlayAction(global.MMO.ANIM_ATTACK)
    OnFrameReached(caster:GetHitFrame(), function()
        self._crack = {
            head = caster:GetX() + 30, dir = caster:GetFaceSign(),
            len = 0, maxLen = self._config.length
        }
        ScreenShake(0.4)
    end)
end

function skillQuake:Update(dt)
    if not self._crack then return end
    local c = self._crack
    c.len = c.len + 900 * dt                          -- 头部推进
    c.head = c._startX + c.dir * c.len

    SpawnRockDebris(c.head, caster:GetY())            -- 沿途碎屑

    for _, m in ipairs(scene:GetMonsters()) do
        if not m._quakeHit and math.abs(c.head - m:GetX()) < 34 then
            m._quakeHit = true
            m:Knockup(160, 500)                       -- 浮空: 初速+重力
        end
    end

    if c.len >= c.maxLen then
        self._crack = nil
        for _, m in ipairs(scene:GetMonsters()) do m._quakeHit = nil end
    end
end