import math

displayName = "Realistic Cave Lighting"

inputs = (
    ("Minimum Lighting Level", (8, 1, 14)),
    ("Only Light Spawnable Areas", True)
)

TransparentBlocks = [0, 6, 8, 9, 10, 11, 18, 20, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 44, 46, 50, 51,
                     52, 53, 54, 55, 59, 60, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 75, 76, 77, 78, 79, 81, 83, 85, 89,
                     90, 92, 93, 94, 95, 96, 97, 101, 102, 104, 105, 106, 107, 108, 109, 111, 113, 114, 115, 116, 117,
                     118, 119, 120, 122, 126, 127]

levelObj = None
boxObj = None
totalTorches = 1
totalX = 1
totalZ = 1

xDiff = 1
zDiff = 1

def perform(level, box, options):

    global levelObj, totalX, totalZ, xDiff, zDiff
    levelObj = level
    boxObj = box

    print(type(boxObj))

    minLightingLevel = options["Minimum Lighting Level"]
    lightSpawns = options["Only Light Spawnable Areas"]

    totalX = box.maxx
    totalZ = box.maxz

    xDiff = box.maxx - box.minx
    zDiff = box.maxz - box.minz

    for x in xrange(box.minx, box.maxx):

        for z in xrange(box.minz, box.maxz):

            for y in reversed(xrange(box.miny, box.maxy)):

                block = level.blockAt(x, y, z)
                blockLight = level.blockLightAt(x, y, z)

                # If our current block is air, and less than the specified lighting level
                if (block == 0 and blockLight < minLightingLevel):

                    if (lightSpawns):
                        blockAbove = level.blockAt(x, y + 1, z)
                        blockBelow = level.blockAt(x, y - 1, z)

                        if (blockAbove == 0 and blockBelow not in TransparentBlocks):
                            placeTorchNearby(x, y, z)
                    else:
                        placeTorchNearby(x, y, z)

    print 'Done!'

def placeTorchNearby(x, y, z):

    torchDir = 1

    supportBlock = levelObj.blockAt(x - 1, y, z)

    if (supportBlock not in TransparentBlocks):
        placeTorch(x, y, z, torchDir)
        return

    torchDir += 1
    supportBlock = levelObj.blockAt(x + 1, y, z)

    if (supportBlock not in TransparentBlocks):
        placeTorch(x, y, z, torchDir)
        return

    torchDir += 1
    supportBlock = levelObj.blockAt(x, y, z - 1)

    if (supportBlock not in TransparentBlocks):
        placeTorch(x, y, z, torchDir)
        return

    torchDir += 1
    supportBlock = levelObj.blockAt(x, y, z + 1)

    if (supportBlock not in TransparentBlocks):
        placeTorch(x, y, z, torchDir)
        return

    torchDir += 1
    supportBlock = levelObj.blockAt(x, y - 1, z)

    if (supportBlock not in TransparentBlocks):
        placeTorch(x, y, z, torchDir)
        return

def placeTorch(x, y, z, direction):

    global totalTorches

    levelObj.setBlockAt(x, y, z, 50)
    levelObj.setBlockDataAt(x, y, z, direction)
    levelObj.generateLights()

    output = round(float(x) / totalX * 100)

    print 'Torch num ' + str(totalTorches) + ' Placed! ' + str(output) + '%'

    totalTorches += 1