Fixed changelings being able to disguise themselves as various weather effects

src/main/java/com/minelittlepony/unicopia/entity/EntityCloud.java

@@ -58,7 +58,7 @@ import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.DifficultyInstance;
 import net.minecraft.world.World;
 
-public class EntityCloud extends EntityFlying implements IAnimals {
+public class EntityCloud extends EntityFlying implements IAnimals, IInAnimate {
 
     private static final DataParameter<Integer> RAINTIMER = EntityDataManager.createKey(EntityCloud.class, DataSerializers.VARINT);
     private static final DataParameter<Boolean> THUNDERING = EntityDataManager.createKey(EntityCloud.class, DataSerializers.BOOLEAN);
@@ -145,6 +145,11 @@ public class EntityCloud extends EntityFlying implements IAnimals {
         return 6;
     }
 
+    @Override
+    public boolean canInteract(Race race) {
+        return race.canInteractWithClouds();
+    }
+
     @Override
     public void onStruckByLightning(EntityLightningBolt lightningBolt) {
 

src/main/java/com/minelittlepony/unicopia/entity/EntityRainbow.java

@@ -1,5 +1,7 @@
 package com.minelittlepony.unicopia.entity;
 
+import com.minelittlepony.unicopia.Race;
+
 import net.minecraft.entity.EntityLiving;
 import net.minecraft.entity.effect.EntityWeatherEffect;
 import net.minecraft.nbt.NBTTagCompound;
@@ -9,7 +11,7 @@ import net.minecraft.util.math.MathHelper;
 import net.minecraft.world.World;
 import net.minecraft.world.biome.Biome.SpawnListEntry;
 
-public class EntityRainbow extends EntityWeatherEffect {
+public class EntityRainbow extends EntityWeatherEffect implements IInAnimate {
 
     public static final SpawnListEntry SPAWN_ENTRY = new SpawnListEntry(EntityRainbow.Spawner.class, 1, 1, 1);
 
@@ -45,6 +47,11 @@ public class EntityRainbow extends EntityWeatherEffect {
         return pass == 1;
     }
 
+    @Override
+    public boolean canInteract(Race race) {
+        return false;
+    }
+
     @Override
     public void setPosition(double x, double y, double z) {
         posX = x;

src/main/java/com/minelittlepony/unicopia/entity/EntitySpell.java

@@ -5,6 +5,7 @@ import javax.annotation.Nullable;
 import org.apache.commons.lang3.StringUtils;
 
 import com.minelittlepony.unicopia.Predicates;
+import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.UItems;
 import com.minelittlepony.unicopia.item.ICastable;
 import com.minelittlepony.unicopia.network.EffectSync;
@@ -34,7 +35,7 @@ import net.minecraft.util.SoundCategory;
 import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 
-public class EntitySpell extends EntityLiving implements IMagicals, ICaster<EntityLivingBase> {
+public class EntitySpell extends EntityLiving implements IMagicals, ICaster<EntityLivingBase>, IInAnimate {
 
 	private EntityLivingBase owner = null;
 
@@ -89,6 +90,11 @@ public class EntitySpell extends EntityLiving implements IMagicals, ICaster<Enti
 	    }
 	}
 
+    @Override
+    public boolean canInteract(Race race) {
+        return race.canCast();
+    }
+
 	@Nullable
 	@Override
 	public IMagicEffect getEffect(boolean update) {

src/main/java/com/minelittlepony/unicopia/entity/IInAnimate.java

@@ -0,0 +1,14 @@
+package com.minelittlepony.unicopia.entity;
+
+import com.minelittlepony.unicopia.Race;
+
+/**
+ * This interface is for any entities that are categorised as inanimated,
+ * or part of a terrain effect.
+ *
+ * These typically can't be interacted with by players unless under certain cirumstances.
+ *
+ */
+public interface IInAnimate {
+    boolean canInteract(Race race);
+}

src/main/java/com/minelittlepony/unicopia/power/PowerDisguise.java

@@ -5,7 +5,9 @@ import javax.annotation.Nullable;
 
 import org.lwjgl.input.Keyboard;
 
+import com.minelittlepony.unicopia.Race;
 import com.minelittlepony.unicopia.UParticles;
+import com.minelittlepony.unicopia.entity.IInAnimate;
 import com.minelittlepony.unicopia.player.IPlayer;
 import com.minelittlepony.unicopia.player.PlayerSpeciesList;
 import com.minelittlepony.unicopia.power.data.Hit;
@@ -15,6 +17,7 @@ import com.minelittlepony.util.vector.VecHelper;
 
 import net.minecraft.block.state.IBlockState;
 import net.minecraft.entity.Entity;
+import net.minecraft.entity.effect.EntityWeatherEffect;
 import net.minecraft.entity.item.EntityFallingBlock;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.init.SoundEvents;
@@ -43,7 +46,8 @@ public class PowerDisguise extends PowerFeed {
     public void apply(IPlayer iplayer, Hit data) {
         EntityPlayer player = iplayer.getOwner();
         RayTraceResult trace = VecHelper.getObjectMouseOver(player, 10, 1);
-        Entity looked = null;
+
+        Entity looked = trace.entityHit;
 
         if (trace.typeOfHit == RayTraceResult.Type.BLOCK) {
             IBlockState state = player.getEntityWorld().getBlockState(trace.getBlockPos());
@@ -51,8 +55,10 @@ public class PowerDisguise extends PowerFeed {
             if (!state.getBlock().isAir(state, player.getEntityWorld(), trace.getBlockPos())) {
                 looked = new EntityFallingBlock(player.getEntityWorld(), 0, 0, 0, state);
             }
-        } else {
-            looked = trace.entityHit;
+        }
+
+        if (looked instanceof EntityWeatherEffect || (looked instanceof IInAnimate && !((IInAnimate)looked).canInteract(Race.CHANGELING))) {
+            looked = null;
         }
 
         if (looked instanceof EntityPlayer) {