Fix dimensional train crash

src/main/java/dev/ithundxr/railwaystweaks/mixin/compat/create/Carriage$DimensionalCarriageEntityMixin.java

@@ -0,0 +1,52 @@
+package dev.ithundxr.railwaystweaks.mixin.compat.create;
+
+import com.llamalad7.mixinextras.injector.v2.WrapWithCondition;
+import com.simibubi.create.content.trains.entity.Carriage;
+import net.minecraft.nbt.DoubleTag;
+import net.minecraft.nbt.ListTag;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.phys.Vec3;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.Unique;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
+
+@Mixin(Carriage.DimensionalCarriageEntity.class)
+public class Carriage$DimensionalCarriageEntityMixin {
+    @Final
+    @Shadow(aliases = "this$0")
+    Carriage this$0;
+
+    @Shadow public Vec3 positionAnchor;
+
+    @Inject(method = "createEntity", at = @At("HEAD"))
+    private void railwaysTweaks$fixDimensionalTrainCrash(Level level, boolean loadPassengers, CallbackInfo ci) {
+        ((CarriageAccessor) this$0).railwaysTweaks$getSerializedEntity().put(
+                "Pos",
+                railwaysTweaks$newDoubleList(
+                        positionAnchor.x(),
+                        positionAnchor.y(),
+                        positionAnchor.z()
+                )
+        );
+    }
+
+    @WrapWithCondition(method = "createEntity", at = @At(value = "INVOKE", target = "Lnet/minecraft/world/entity/Entity;moveTo(Lnet/minecraft/world/phys/Vec3;)V"))
+    private boolean railwaysTweaks$fixDimensionalTrainCrash2(Entity instance, Vec3 vec) {
+        return false;
+    }
+
+    @Unique
+    private static ListTag railwaysTweaks$newDoubleList(double... pValues) {
+        ListTag listtag = new ListTag();
+
+        for (double d : pValues)
+            listtag.add(DoubleTag.valueOf(d));
+
+        return listtag;
+    }
+}

src/main/java/dev/ithundxr/railwaystweaks/mixin/compat/create/CarriageAccessor.java

@@ -0,0 +1,12 @@
+package dev.ithundxr.railwaystweaks.mixin.compat.create;
+
+import com.simibubi.create.content.trains.entity.Carriage;
+import net.minecraft.nbt.CompoundTag;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.gen.Accessor;
+
+@Mixin(Carriage.class)
+public interface CarriageAccessor {
+    @Accessor("serialisedEntity")
+    CompoundTag railwaysTweaks$getSerializedEntity();
+}

src/main/resources/railwaystweaks.mixins.json

@@ -9,6 +9,8 @@
     "ServerPlayerMixin",
     "ServerStatusPacketListenerImplMixin",
     "compat.appleskin.SyncHandlerMixin",
+    "compat.create.Carriage$DimensionalCarriageEntityMixin",
+    "compat.create.CarriageAccessor",
     "compat.dcintegration.DiscordEventListenerMixin",
     "compat.tconstruct.SimpleChannelAccessor"
   ],