Handle unknown entity types correctly

Author: FlorianMichael

build-logic/src/main/groovy/vr.base-conventions.gradle

@@ -22,8 +22,8 @@ base {
 }
 
 dependencies {
-    compileOnly "com.viaversion:viaversion:5.0.4-SNAPSHOT"
-    compileOnly "com.viaversion:viabackwards:5.0.4-SNAPSHOT"
+    compileOnly "com.viaversion:viaversion:5.2.1-SNAPSHOT"
+    compileOnly "com.viaversion:viabackwards:5.2.1-SNAPSHOT"
 }
 
 publishing {

common/src/main/java/com/viaversion/viarewind/protocol/v1_8to1_7_6_10/rewriter/EntityPacketRewriter1_8.java

@@ -146,6 +146,9 @@ public void register() {
 				handler(wrapper -> {
 					final int entityId = wrapper.get(Types.VAR_INT, 0);
 					final EntityTypes1_8.EntityType type = EntityTypes1_8.getTypeFromId(wrapper.get(Types.BYTE, 0), true);
+					if (type == null) {
+						return;
+					}
 
 					int x = wrapper.get(Types.INT, 0);
 					int y = wrapper.get(Types.INT, 1);
@@ -184,7 +187,7 @@ public void register() {
 						hologram.setPosition(x / 32.0, y / 32.0, z / 32.0);
 						hologram.setRotation(yaw * 360f / 256, pitch * 360f / 256);
 						hologram.setHeadYaw(yaw * 360f / 256);
-					} else if (type != null && type.isOrHasParent(EntityTypes1_8.EntityType.FALLING_BLOCK)) {
+					} else if (type.isOrHasParent(EntityTypes1_8.EntityType.FALLING_BLOCK)) {
 						int blockId = data & 0xFFF;
 						int blockData = data >> 12 & 0xF;
 						final IdAndData replace = protocol.getItemRewriter().handleBlock(blockId, blockData);

common/src/main/java/com/viaversion/viarewind/protocol/v1_9to1_8/rewriter/EntityPacketRewriter1_9.java

@@ -100,7 +100,7 @@ public void register() {
 					final EntityTypes1_9.EntityType type = EntityTypes1_9.getTypeFromId(entityType, true);
 
 					// Cancel new entities which can't be handled properly
-					if (type == EntityTypes1_9.EntityType.AREA_EFFECT_CLOUD || type == EntityTypes1_9.EntityType.SPECTRAL_ARROW || type == EntityTypes1_9.EntityType.DRAGON_FIREBALL) {
+					if (type == null || type == EntityTypes1_9.EntityType.AREA_EFFECT_CLOUD || type == EntityTypes1_9.EntityType.SPECTRAL_ARROW || type == EntityTypes1_9.EntityType.DRAGON_FIREBALL) {
 						wrapper.cancel();
 						return;
 					}

fabric/src/main/resources/fabric.mod.json

@@ -24,7 +24,7 @@
   },
   "depends": {
     "viafabric": ">=0.4.14",
-    "viabackwards": ">=5.0.4"
+    "viabackwards": ">=5.2.1-SNAPSHOT"
   },
   "custom": {
     "modmenu:api": true,