光点翻转：点亮全部即通关

fx-lightflip

local LightFlip = {}
local CONST = { MSG_ID = 12320, KEY = "LightFlip", GEN_PRESSES = 8 }

function LightFlip.GenPuzzle(n)
    LightFlip._n = n
    LightFlip._grid = {}
    for i = 1, n * n do LightFlip._grid[i] = true end   -- 从全亮终局反推

    for _ = 1, CONST.GEN_PRESSES do
        local r = math.random(1, n)
        local c = math.random(1, n)
        LightFlip:ApplyFlip(r, c, true)                 -- 生成期点按不记步数
    end
    LightFlip._steps = 0
    LightFlip._won = false
end

function LightFlip:ApplyFlip(r, c, silent)
    local dirs = { {0,0}, {0,1}, {0,-1}, {1,0}, {-1,0} }
    for _, d in ipairs(dirs) do
        local rr, cc = r + d[1], c + d[2]
        if rr >= 1 and rr <= self._n and cc >= 1 and cc <= self._n then
            local idx = (rr - 1) * self._n + cc
            self._grid[idx] = not self._grid[idx]
        end
    end
    if not silent then self._steps = self._steps + 1 end
end

function LightFlip.OnTap(r, c)
    if LightFlip._won then return end
    LightFlip:ApplyFlip(r, c)
    LightFlip._steps = LightFlip._steps + 1
    if LightFlip:AllLit() then
        LightFlip._won = true
        SL:SendLuaNetMsg(CONST.MSG_ID, 0, 0, 0,
            SL:JsonEncode({ key = CONST.KEY, op = 1, steps = LightFlip._steps }))
        SL:ShowSystemTips("通关! 用了 " .. LightFlip._steps .. " 步")
    end
end

return LightFlip