追星逐月：流星追着狼怪跑

 fx-chasemeteo

local ChaseMeteo = {}
local KEY = { SPD = 280, TURN = 3 }

local meteor = nil

function CM.Cast(self_, target)
    meteor = {
        x = SL:GetValue("actorX", self_) + 60,
        y = -30,
        vx = 120, vy = 260,
        target = target
    }
    SL:PlayActorAct(self_, "cast")
    SL:ShowSystemTips("流星追踪中!")
    SL:Schedule(function(dt)
        if not meteor then SL:UnSchedule("cmRun") return end
        -- 追踪: 速度向量朝目标渐进旋转
        local dx = SL:GetValue("actorX", meteor.target) - meteor.x
        local dy = SL:GetValue("groundY") - 6 - meteor.y
        local wantA = math.atan2(dy, dx)
        local curA = math.atan2(meteor.vy, meteor.vx)
        local diff = wantA - curA
        while diff > math.pi do diff = diff - 2 * math.pi end
        while diff < -math.pi do diff = diff + 2 * math.pi end
        local maxTurn = KEY.TURN * dt
        local turn = math.max(-maxTurn, math.min(maxTurn, diff))
        local newA = curA + turn
        meteor.vx = math.cos(newA) * KEY.SPD
        meteor.vy = math.sin(newA) * KEY.SPD
        meteor.x = meteor.x + meteor.vx * dt
        meteor.y = meteor.y + meteor.vy * dt
        SL:SetFxPos("meteor", meteor.x, meteor.y)
        -- 命中判定
        local tx = SL:GetValue("actorX", meteor.target)
        if math.abs(meteor.x - tx) < 20 and meteor.y > SL:GetValue("groundY") - 40 then
            SL:PlayFxAt("meteor_burst", meteor.x, meteor.y)
            SL:ScreenShake(0.32, 6)
            SL:DeductHp(meteor.target, 46)
            SL:ShowHitNum(meteor.target, 46, "meteor")
            SL:PlayActorAct(meteor.target, "stuck")
            SL:UnSchedule("cmRun")
            meteor = nil
            SL:ScheduleOnce(function()
                SL:ShowSystemTips("撞地爆发! — 火星四溅")
            end, 0.3)
        end
    end, 0.016, "cmRun")
end

return CM