3d

local mapWidth, mapHeight = 64, 64
local screenW, screenH = term.getSize()
local cam = {x = 32, y = 20, z = 32, angle = 0}
local D = 100

local function getMapColor(x, z)
  local tile = map[math.floor(z % mapHeight) + 1][math.floor(x % mapWidth) + 1]
  return tile -- color code or char
end

while true do
  for y = screenH // 2, screenH do
    local lam = cam.y / (y - screenH/2 + 1)
    local cosA, sinA = math.cos(cam.angle), math.sin(cam.angle)
    local startX = cam.x - cosA * lam * 60 + sinA * lam * 60
    local startZ = cam.z - sinA * lam * 60 - cosA * lam * 60
    local stepX = (2 * cosA * lam * 60) / screenW
    local stepZ = (2 * sinA * lam * 60) / screenW
    term.setCursorPos(1, y)
    for x = 1, screenW do
      local tile = getMapColor(startX, startZ)
      term.write(tile)
      startX = startX + stepX
      startZ = startZ + stepZ
    end
  end
  sleep(0)
end