【界面UI】小地图渲染：坐标转换与视野范围

---世界坐标转小地图坐标：比例 1:10
local MAPW, MAPH = 1000, 800
local MiniMap = { layer = nil, scale = 10 }

function MiniMap.toMini(wx, wy)
    local mx = wx / MiniMap.scale
    local my = MAPH / MiniMap.scale - wy / MiniMap.scale
    return mx, my
end

function MiniMap.drawSelf(actor)
    local mx, my = MiniMap.toMini(actor.x, actor.y)
    if not MiniMap.selfMark then
        MiniMap.selfMark = GUI:Text_Create(MiniMap.layer, "me", 0, 0, 12, "#FFD700", "▲")
    end
    GUI:Text_setPosition(MiniMap.selfMark, mx, my)
end

---注册地图标记消息：队友与 BOSS 位置
SL:RegisterLuaNetMsg("MAPMARK", function(data)
    local marks = SL:JsonDecode(data)
    if not marks or #marks > 50 then return end
    for _, m in ipairs(marks) do
        local mx, my = MiniMap.toMini(m.x, m.y)
        MiniMap.put(m.kind, m.id, mx, my)
    end
end)

-- 200 毫秒刷新一次视野框
SL:Schedule(0.2, function() MiniMap.refreshViewBox() end)