improved handling of fake players in boats and when pushed by slimeblocks. Fixes #507

src/main/java/carpet/mixins/EntityMixin.java

@@ -1,10 +1,16 @@
 package carpet.mixins;
 
 import carpet.fakes.EntityInterface;
+import carpet.patches.EntityPlayerMPFake;
 import net.minecraft.entity.Entity;
 import net.minecraft.util.math.MathHelper;
+import net.minecraft.world.World;
+import org.jetbrains.annotations.Nullable;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
 
 @Mixin(Entity.class)
 public abstract class EntityMixin implements EntityInterface
@@ -14,9 +20,19 @@ public abstract class EntityMixin implements EntityInterface
     
     @Shadow
     public float prevYaw;
-    
+
+    @Shadow public @Nullable abstract Entity getPrimaryPassenger();
+
+    @Shadow public World world;
+
     public float getMainYaw(float partialTicks)
     {
         return partialTicks == 1.0F ? this.yaw : MathHelper.lerp(partialTicks, this.prevYaw, this.yaw);
     }
+
+    @Inject(method = "isLogicalSideForUpdatingMovement", at = @At("HEAD"), cancellable = true)
+    private void isFakePlayer(CallbackInfoReturnable<Boolean> cir)
+    {
+        if (getPrimaryPassenger() instanceof EntityPlayerMPFake) cir.setReturnValue(!world.isClient);
+    }
 }