【进阶实战】回旋镖：去而复返的弹道设计封装

local function throwBoomerang(actor, target)
    if takeitem(actor, "回旋镖", 1, 1, "掷出") then
        setplayvar(actor, 0, "BoomOut", os.time() + 1, 0)
        sendmsg(actor, 1, "回旋镖掷出，去程 200 伤害。")
        local hp = tonumber(getplayvar(target, 0, "HP")) or 0
        setplayvar(target, 0, "HP", hp - 200, 0)
    end
end

local function boomReturn(actor, target)
    local untilTs = tonumber(getplayvar(actor, 0, "BoomOut")) or 0
    if os.time() >= untilTs then
        setplayvar(actor, 0, "BoomOut", 0, 0)
        giveitem(actor, "回旋镖", 1, 1, "回旋回收")
        local hp = tonumber(getplayvar(target, 0, "HP")) or 0
        setplayvar(target, 0, "HP", hp - 150, 0)
        sendmsg(actor, 1, "回旋镖飞回，回程 150 伤害。")
    end
end