Nudge npcs out of blocks they grow into when the hitbox changes

src/main/java/noppes/npcs/entity/EntityCustomNpc.java

@@ -86,9 +86,7 @@ public class EntityCustomNpc extends EntityNPCFlying {
                 worldObj.MAX_ENTITY_RADIUS = newWidth / 2;
             }
 
-            this.width = newWidth;
-            this.height = newHeight;
-            this.setPosition(posX, posY, posZ);
+            applyHitbox(newWidth, newHeight);
         }
     }
 

src/main/java/noppes/npcs/entity/EntityNPCGolem.java

@@ -37,9 +37,7 @@ public class EntityNPCGolem extends EntityNPCInterface {
             newWidth = 1.4f;
             newHeight = 2.5f;
         }
-        this.width = newWidth;
-        this.height = newHeight;
-        this.setPosition(posX, posY, posZ);
+        applyHitbox(newWidth, newHeight);
         if (width / 2 > World.MAX_ENTITY_RADIUS) {
             World.MAX_ENTITY_RADIUS = width / 2;
         }

src/main/java/noppes/npcs/entity/EntityNPCInterface.java

@@ -1324,9 +1324,21 @@ public abstract class EntityNPCInterface extends EntityCreature implements IEnti
             World.MAX_ENTITY_RADIUS = newWidth / 2;
         }
 
+        applyHitbox(newWidth, newHeight);
+    }
+
+    /**
+     * Applies a new hitbox size. Mirrors vanilla setSize by nudging the npc out of whatever it grew
+     * into -- an overlapped block stops resolving downward collision, so the npc drops through it.
+     */
+    protected void applyHitbox(float newWidth, float newHeight) {
+        float oldWidth = this.width;
         this.width = newWidth;
         this.height = newHeight;
         this.setPosition(posX, posY, posZ);
+
+        if (newWidth > oldWidth && !this.firstUpdate && !this.worldObj.isRemote)
+            this.moveEntity(oldWidth - newWidth, 0.0D, oldWidth - newWidth);
     }
 
     @Override

src/main/java/noppes/npcs/entity/EntityNpcDragon.java

@@ -115,9 +115,7 @@ public class EntityNpcDragon extends EntityNPCInterface {
 //    }
     @Override
     public void updateHitbox() {
-        this.width = 1.8f;
-        this.height = 1.4f;
-        this.setPosition(posX, posY, posZ);
+        applyHitbox(1.8f, 1.4f);
         if (width / 2 > World.MAX_ENTITY_RADIUS) {
             World.MAX_ENTITY_RADIUS = width / 2;
         }

src/main/java/noppes/npcs/entity/EntityNpcSlime.java

@@ -17,9 +17,7 @@ public class EntityNpcSlime extends EntityNPCInterface {
 
     @Override
     public void updateHitbox() {
-        this.width = 0.8f;
-        this.height = 0.8f;
-        this.setPosition(posX, posY, posZ);
+        applyHitbox(0.8f, 0.8f);
         if (width / 2 > World.MAX_ENTITY_RADIUS) {
             World.MAX_ENTITY_RADIUS = width / 2;
         }

src/main/java/noppes/npcs/entity/old/EntityNPCEnderman.java

@@ -40,9 +40,7 @@ public class EntityNPCEnderman extends EntityNpcEnderchibi {
         newHeight = (newHeight / 5f) * display.modelSize;
         newWidth = Math.max(newWidth, 0.00001f);
         newHeight = Math.max(newHeight, 0.00001f);
-        this.width = newWidth;
-        this.height = newHeight;
-        this.setPosition(posX, posY, posZ);
+        applyHitbox(newWidth, newHeight);
         if (width / 2 > World.MAX_ENTITY_RADIUS) {
             World.MAX_ENTITY_RADIUS = width / 2;
         }