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Merge pull request #20 from Pokechu22/tileentity-topping
Create tile entity topping
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,134 @@ | ||
| #!/usr/bin/env python | ||
| # -*- coding: utf8 -*- | ||
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| from .topping import Topping | ||
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| from jawa.constants import ConstantClass, ConstantString | ||
| from jawa.cf import ClassFile | ||
|
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| try: | ||
| from cStringIO import StringIO | ||
| except ImportError: | ||
| from StringIO import StringIO | ||
|
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| class TileEntityTopping(Topping): | ||
| """Gets tile entity (block entity) types.""" | ||
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| PROVIDES = [ | ||
| "tileentities.list", | ||
| "tileentities.tags", | ||
| "tileentities.networkids" | ||
| ] | ||
|
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| DEPENDS = [ | ||
| "identify.tileentity.superclass", | ||
| "identify.tileentity.blockentitytag", | ||
| "packets.classes" | ||
| ] | ||
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| @staticmethod | ||
| def act(aggregate, jar, verbose=False): | ||
| te = aggregate.setdefault("tileentity", {}) | ||
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| if "tileentity.superclass" not in aggregate["classes"]: | ||
| if verbose: | ||
| print "Missing tileentity.superclass" | ||
| return | ||
|
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| superclass = aggregate["classes"]["tileentity.superclass"] | ||
| cf = ClassFile(StringIO(jar.read(superclass + ".class"))) | ||
| method = cf.methods.find_one("<clinit>") | ||
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| tileentities = te.setdefault("tileentities", {}) | ||
| te_classes = te.setdefault("classes", {}) | ||
| tmp = {} | ||
| for ins in method.code.disassemble(): | ||
| if ins.mnemonic in ("ldc", "ldc_w"): | ||
| const = cf.constants.get(ins.operands[0].value) | ||
| if isinstance(const, ConstantClass): | ||
| tmp["class"] = const.name.value | ||
| elif isinstance(const, ConstantString): | ||
| tmp["name"] = const.string.value | ||
| elif ins.mnemonic == "invokestatic": | ||
| if "class" in tmp and "name" in tmp: | ||
| tmp["blocks"] = [] | ||
| tileentities[tmp["name"]] = tmp | ||
| te_classes[tmp["class"]] = tmp["name"] | ||
| tmp = {} | ||
|
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| if "tileentity.blockentitytag" in aggregate["classes"]: | ||
| # Block entity tag matches block names to tile entities. | ||
| tag = aggregate["classes"]["tileentity.blockentitytag"] + ".class" | ||
| tag_cf = ClassFile(StringIO(jar.read(tag))) | ||
| method = tag_cf.methods.find_one("<clinit>") | ||
|
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| stack = [] | ||
| for ins in method.code.disassemble(): | ||
| if ins.mnemonic in ("ldc", "ldc_w"): | ||
| const = tag_cf.constants.get(ins.operands[0].value) | ||
| if isinstance(const, ConstantString): | ||
| stack.append(const.string.value) | ||
| elif ins.mnemonic == "invokeinterface": | ||
| if len(stack) == 2: | ||
| if not stack[1] in tileentities: | ||
| if verbose: | ||
| # This does currently happen in 1.9 | ||
| print ("Trying to mark %s as a block with " | ||
| "tile entity %s but that tile entity " | ||
| "does not exist!" | ||
| % (stack[0], stack[1])) | ||
| else: | ||
| tileentities[stack[1]]["blocks"].append(stack[0]) | ||
| stack = [] | ||
| elif verbose: | ||
| print "No block entity tag info; skipping that" | ||
|
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| nbt_tag_type = "L" + aggregate["classes"]["nbtcompound"] + ";" | ||
| if "nethandler.client" in aggregate["classes"]: | ||
| updatepacket = None | ||
| for packet in aggregate["packets"]["packet"].itervalues(): | ||
| if (packet["direction"] != "CLIENTBOUND" or | ||
| packet["state"] != "PLAY"): | ||
| continue | ||
|
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| packet_cf = ClassFile(StringIO(jar.read(packet["class"]))) | ||
| # Check if the packet has the expected fields in the class file | ||
| # for the update tile entity packet | ||
| if (len(packet_cf.fields) >= 3 and | ||
| # Tile entity type int, at least (maybe also position) | ||
| len(list(packet_cf.fields.find(type_="I"))) >= 1 and | ||
| # New NBT tag | ||
| len(list(packet_cf.fields.find(type_=nbt_tag_type)))): | ||
| # There are other fields, but they vary by version. | ||
| updatepacket = packet | ||
| break | ||
|
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| if not updatepacket: | ||
| print "Failed to identify update tile entity packet" | ||
| return | ||
|
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| te["update_packet"] = updatepacket | ||
| nethandler = aggregate["classes"]["nethandler.client"] + ".class" | ||
| nethandler_cf = ClassFile(StringIO(jar.read(nethandler))) | ||
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| updatepacket_name = updatepacket["class"].replace(".class", "") | ||
|
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| method = nethandler_cf.methods.find_one( | ||
| args="L" + updatepacket_name + ";") | ||
|
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| value = None | ||
| for ins in method.code.disassemble(): | ||
| if ins.mnemonic.startswith("iconst_"): | ||
| value = ins.mnemonic[-1] | ||
| elif ins.mnemonic == "bipush": | ||
| value = ins.operands[0].value | ||
| elif ins.mnemonic == "instanceof": | ||
| if value is None: | ||
| # Ensure the command block callback is not counted | ||
| continue | ||
|
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| const = nethandler_cf.constants.get(ins.operands[0].value) | ||
| te_name = te_classes[const.name.value] | ||
| tileentities[te_name]["network_id"] = value | ||
| value = None |