自动寻路：点击任务直达目标地点

-- 错误：直线冲目标，地形一挡就卡死
function goTask(p, tx, ty)
    moveTo(p, tx, ty)
end

local function walkPath(p, pathId)
    local chain = PATHS[pathId]
    setplayvar(p, "walkPath", pathId)
    setplayvar(p, "walkIdx", 1)
    moveTo(p, chain[1].x, chain[1].y)
end
local function onReachNode(p)
    local chain = PATHS[getplayvar(p, "walkPath")]
    local idx = (getplayvar(p, "walkIdx") or 1) + 1
    if idx > #chain then
        setplayvar(p, "walkIdx", 0)
        sendmsg(p, 1, "已到达任务地点")
        return
    end
    setplayvar(p, "walkIdx", idx)
    moveTo(p, chain[idx].x, chain[idx].y)
end