From 39b60aa7428eb26287442ca297b0eb1e77148b0d Mon Sep 17 00:00:00 2001
From: NotMyFault <mc.cache@web.de>
Date: Mon, 9 Dec 2019 22:36:52 +0100
Subject: [PATCH] Fix legacy id conversion

---
 .../world/registry/LegacyMapper.java          | 71 ++++++++++++-------
 1 file changed, 46 insertions(+), 25 deletions(-)

diff --git a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/LegacyMapper.java b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/LegacyMapper.java
index b49b59a5e..f4af74483 100644
--- a/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/LegacyMapper.java
+++ b/worldedit-core/src/main/java/com/sk89q/worldedit/world/registry/LegacyMapper.java
@@ -33,6 +33,7 @@ import com.sk89q.worldedit.extension.input.InputParseException;
 import com.sk89q.worldedit.extension.input.ParserContext;
 import com.sk89q.worldedit.extension.platform.Capability;
 import com.sk89q.worldedit.math.Vector3;
+import com.sk89q.worldedit.registry.state.PropertyKey;
 import com.sk89q.worldedit.util.gson.VectorAdapter;
 import com.sk89q.worldedit.util.io.ResourceLoader;
 import com.sk89q.worldedit.world.DataFixer;
@@ -81,10 +82,6 @@ public final class LegacyMapper {
     private LegacyMapper() {
     }
 
-    public final static LegacyMapper getInstance() {
-        return INSTANCE;
-    }
-
     /**
      * Attempt to load the data from file.
      *
@@ -110,33 +107,53 @@ public final class LegacyMapper {
 
         for (Map.Entry<String, String> blockEntry : dataFile.blocks.entrySet()) {
             String id = blockEntry.getKey();
+            Integer combinedId = getCombinedId(blockEntry.getKey());
             final String value = blockEntry.getValue();
             blockEntries.put(id, value);
             BlockState blockState = null;
-            BlockFactory blockFactory = WorldEdit.getInstance().getBlockFactory();
-
-            if (fixer != null) {
-                try {
-                    String newEntry = fixer.fixUp(DataFixer.FixTypes.BLOCK_STATE, value, 1631);
-                    blockState = blockFactory.parseFromInput(newEntry, parserContext).toImmutableState();
-                } catch (InputParseException e) {
+            try {
+                blockState = BlockState.get(null, blockEntry.getValue());
+                BlockType type = blockState.getBlockType();
+                if (type.hasProperty(PropertyKey.WATERLOGGED)) {
+                    blockState = blockState.with(PropertyKey.WATERLOGGED, false);
+                }
+            } catch (InputParseException e) {
+                BlockFactory blockFactory = WorldEdit.getInstance().getBlockFactory();
+                if (fixer != null) {
+                    try {
+                        String newEntry = fixer.fixUp(DataFixer.FixTypes.BLOCK_STATE, value, 1631);
+                        blockState = blockFactory.parseFromInput(newEntry, parserContext).toImmutableState();
+                    } catch (InputParseException f) {
+                    }
+                }
+                // if it's still null, the fixer was unavailable or failed
+                if (blockState == null) {
+                    try {
+                        blockState = blockFactory.parseFromInput(value, parserContext).toImmutableState();
+                    } catch (InputParseException f) {
+                    }
+                }
+                // if it's still null, both fixer and default failed
+                if (blockState == null) {
+                    log.warn("Unknown block: " + value);
+                } else {
+                    // it's not null so one of them succeeded, now use it
+                    blockToStringMap.put(blockState, id);
+                    stringToBlockMap.put(id, blockState);
                 }
             }
-            // if it's still null, the fixer was unavailable or failed
-            if (blockState == null) {
-                try {
-                    blockState = blockFactory.parseFromInput(value, parserContext).toImmutableState();
-                } catch (InputParseException e) {
+            blockArr[combinedId] = blockState.getInternalId();
+            blockStateToLegacyId4Data.put(blockState.getInternalId(), (Integer) combinedId);
+            blockStateToLegacyId4Data.putIfAbsent(blockState.getInternalBlockTypeId(), combinedId);
+        }
+        for (int id = 0; id < 256; id++) {
+            int combinedId = id << 4;
+            int base = blockArr[combinedId];
+            if (base != 0) {
+                for (int data = 0; data < 16; data++, combinedId++) {
+                    if (blockArr[combinedId] == 0) blockArr[combinedId] = base;
                 }
             }
-            // if it's still null, both fixer and default failed
-            if (blockState == null) {
-                log.warn("Unknown block: " + value);
-            } else {
-                // it's not null so one of them succeeded, now use it
-                blockToStringMap.put(blockState, id);
-                stringToBlockMap.put(id, blockState);
-            }
         }
 
         for (Map.Entry<String, String> itemEntry : dataFile.items.entrySet()) {
@@ -267,7 +284,11 @@ public final class LegacyMapper {
     @Deprecated
     public int[] getLegacyFromBlock(BlockState blockState) {
         Integer combinedId = getLegacyCombined(blockState);
-        return combinedId == null ? null : new int[]{combinedId >> 4, combinedId & 0xF};
+        return combinedId == null ? null : new int[] { combinedId >> 4, combinedId & 0xF };
+    }
+
+    public final static LegacyMapper getInstance() {
+        return INSTANCE;
     }
 
     @SuppressWarnings({"MismatchedQueryAndUpdateOfCollection"})