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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Shane Freeder <theboyetronic@gmail.com>
Date: Sun, 1 Aug 2021 09:49:06 +0100
Subject: [PATCH] Fix incosistency issue with empty map items in CB
diff --git a/src/main/java/net/minecraft/world/item/MapItem.java b/src/main/java/net/minecraft/world/item/MapItem.java
index 6f86f00d33cd50a2b67409c2f0f5400c869b802a..b714417cb3712a8f1d9bbdd47cff66436a49ba07 100644
--- a/src/main/java/net/minecraft/world/item/MapItem.java
+++ b/src/main/java/net/minecraft/world/item/MapItem.java
@@ -70,7 +70,7 @@ public class MapItem extends ComplexItem {
public static Integer getMapId(ItemStack stack) {
CompoundTag nbttagcompound = stack.getTag();
- return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : -1; // CraftBukkit - make new maps for no tag
+ return nbttagcompound != null && nbttagcompound.contains("map", 99) ? nbttagcompound.getInt("map") : null; // CraftBukkit - make new maps for no tag // Paper - don't return invalid ID
}
public static int createNewSavedData(Level world, int x, int z, int scale, boolean showIcons, boolean unlimitedTracking, ResourceKey<Level> dimension) {
diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
index 96ab7d53f4e089c7666872f9fd0f09283259a726..8e634ccb91b58000412c572903e57d30ddb2caba 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaMap.java
@@ -144,6 +144,7 @@ class CraftMetaMap extends CraftMetaItem implements MapMeta {
@Override
public int getMapId() {
+ Preconditions.checkState(this.hasMapView(), "Item does not have map associated - check hasMapView() first!"); // Paper - more friendly message
return this.mapId;
}
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