和平模式：PK模式切换的免战保护

local MODES = {peace = 1, team = 2, all = 3}
local function setMode(actor, mode)
    if getplayvar(actor, "ZONE") == "city" then
        setplayvar(actor, "pkMode", MODES.peace)
        sendmsg(actor, 1, "主城强制和平模式")
        return
    end
    setplayvar(actor, "pkMode", MODES[mode])
    sendmsg(actor, 1, "PK 模式已切换")
end

local function canAttack(actor, target)
    local m = getplayvar(actor, "pkMode") or 1
    if m == 1 then return false end
    if m == 2 then
        return getplayvar(target, "GUILD")
            ~= getplayvar(actor, "GUILD")
    end
    return true
end