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Fix NullPointerException when joining a server #112

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Fix NullPointerException when joining a server #112

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9 changes: 7 additions & 2 deletions ...java/gollorum/signpost/blockpartdata/types/renderers/BlockPartWaystoneUpdateListener.java
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,12 @@
public final class BlockPartWaystoneUpdateListener {

private static BlockPartWaystoneUpdateListener instance;
public static BlockPartWaystoneUpdateListener getInstance() { return instance; }
public static BlockPartWaystoneUpdateListener getInstance() {
if (instance == null) {
instance = new BlockPartWaystoneUpdateListener();
}
return instance;
}

private final WeakHashMap<BlockPart<?>, BiConsumer<BlockPart<?>, WaystoneUpdatedEvent>> listeners = new WeakHashMap<>();

Expand All @@ -25,7 +30,7 @@ private BlockPartWaystoneUpdateListener(){}

public static void initialize() {
WaystoneLibrary.onInitializeDo.addListener(lib -> {
instance = new BlockPartWaystoneUpdateListener();
instance = getInstance();
lib.updateEventDispatcher.addListener(event -> {
for (Map.Entry<BlockPart<?>, BiConsumer<BlockPart<?>, WaystoneUpdatedEvent>> entry : instance.listeners.entrySet().stream().toList())
entry.getValue().accept(entry.getKey(), event);
Expand Down