BatchReplace.py

# You may modify and distribute this filter however you wish,
# but please give credit to WolfieMario.
from pymclevel.java import MCJavaLevel

displayName = "Batch Replace"

inputs = (
    ("Batch block replacement filter by WolfieMario\n", "label"),
    ("Usage: each conversion is a sequence of \"id:metadata\" values, separated by spaces. Conversions are separated by commas." +
    " The final \"id:metadata\" value in a conversion represents what block to convert all preceding ones to." +
    " For example, \"59:7 141:7 142:7 0, 2 110\" deletes all fully-grown wheat, potatoes, and carrots, and turns grass" +
    " into mycelium. Note that the \":metadata\" is optional.", "label"),

    ("", ("string", "lines=5", "width=370", "value=")),
)

def perform(level, box, options):
    # Generate conversions
    conversions = {}

    lines = options[""].split(",")
    for l in lines:
        tokens = l.split()
        result = tokens.pop()
        for t in tokens:
            conversions[t] = result

    for x in xrange(box.minx, box.maxx):
        for y in xrange(box.miny, box.maxy):
            for z in xrange(box.minz, box.maxz):
                block = level.blockAt(x, y, z)
                data = level.blockDataAt(x, y, z)

                key = str(block) + ":" + str(data)
                result = None
                if key in conversions:
                    result = conversions[key]
                elif str(block) in conversions:
                    result = conversions[str(block)]

                if result:
                    newData = result.split(":")
                    level.setBlockAt(x, y, z, newData[0])
                    if len(newData) > 1:
                        level.setBlockDataAt(x, y, z, newData[1])

    level.markDirtyBox(box)