【进阶实战】Lua网格压平：沙巴克城墙二维地图的一维存储

local map = {}
for y = 1, 50 do
    map[y] = {}
    for x = 1, 50 do
        map[y][x] = 0               -- 嵌套表，2500个表层
    end
end

local W = 50
local flat = {}
local function set(x, y, v)
    flat[(y - 1) * W + x] = v       -- 行主序压平
end
local function get(x, y)
    return flat[(y - 1) * W + x]
end
set(3, 7, "裁决之杖")
sendmsg(actor, 1, "城墙(3,7)驻守 " .. tostring(get(3, 7)))