maze.lua

-- requires a maze.txt file

function readAll(file)
    local f = assert(io.open(file, "rb"))
    local content = f:read("*all")
    f:close()
    return content
end

function setBlock(x, y, z, blockType, color)
    local p = boundless.wrap(boundless.UnwrappedBlockCoord(x, y, z))
    local c = boundless.ChunkCoord(p)
    boundless.loadChunkAnd8Neighbours(c, function (chunks)
        local v = boundless.getBlockValues(p)
        v.blockType = blockType
        v.blockMeta = 0
        v.blockColorIndex = color
        boundless.setBlockValues(p, v)
    end)
end

mazeStr = readAll('maze.txt')
--print('\n' .. mazeStr)

local maze_pos
for c in boundless.connections() do
    local e = boundless.getEntity(c:get_id())
    if e then
        local player_pos = e:get_position():withYOffset(-0.5)
        maze_pos = boundless.wrap(boundless.UnwrappedBlockCoord(
            math.floor(player_pos.x + 16),
            math.floor(player_pos.y),
            math.floor(player_pos.z)))
    end
end

local x = 0;
local z = 0;
for line in mazeStr:gmatch("[^\r\n]+") do
    local t = ''
    for i = 1, #line do
        local c = line:sub(i,i)
        t = t .. c

        if c == 'X' then
            for y = 16, 24 do
                setBlock(math.floor(maze_pos.x + x),
                         y,
                         math.floor(maze_pos.z + z),
                         11265, -- ROCK_MARBLE_REFINED
                         188) -- color
            end
        end

        z = z + 1
    end
    print(t)

    x = x + 1
    z = 0
end