[1.7.10] Multi-Entity Mob

[dfmsguitar]

Hello, I'm working on creating a Living Entity that's composed of multiple entity segments.  I've created two Entities, an EntityLeader and an EntitySegment.  inside the EntityLeader, I created an Array of EntitySegment and added a method called spawnBodySegments that initializes the array at MAX_SEGMENTS, then for each segment in that array it creates a new EntitySegment, calls setLocationAndAngles, then spawns it into the world.

 

The problem I'm having is, (I guess) I'm not sure where to call this method (spawnBodySegments).  If I call spawnBodySegments from the Constructor or from entityInit(), then when it uses "this.posX" as the base X position for setLocationAndAngles, at this point this.posX = 0.0.  The same with Y and Z obviously.

 

I tried changing onUpdate to check if(this.body == null) at the start of the function then call spawnBodySegments so that it should theoretically only spawn them when onUpdate is first called with a valid set of coordinates.  This seemed to work sort of (based on printing the positions and adding breakpoints to view the position values), except when I iterate through the body segments in onUpdate and call leader = this.body[i - 1]; this.body[ i ].setPosition(leader.posX - 0.5D, leader.posY, leader.posZ - 0.5D); -- just testing to try to get an understanding of the math I need to implement.  When I call that function, for some strange reason it just keeps changing the position of the EntityLead segment. so even without any AI, with all super functions disabled, whenever I spawn one and let that function do its thing, it just drifts away in the -X and -Z direction and doesn't spawn any visible body segments.

 

I'm sure it's something stupid I'm overlooking, but I've pulled out some hair over this.  Any help would be greatly appreciated.

[dfmsguitar]

this is the code that makes the EntityLeader just drift away (EntityLeader is the class this code is in).

if you comment out this line: 

this.body[i].setPosition(leaderX, leaderY, leaderZ);

he just sits still or follows whatever AI is assigned.

	protected void spawnBodySegments()
   {
     if (!this.worldObj.isRemote)
     {
       if (this.body == null)
       {
         this.body = new EntitySegment[MAX_SEGMENTS];
       }
       for (int i = 0; i < MAX_SEGMENTS; i++)
       {
         if ((this.body[i] == null) || (this.body[i].isDead))
         {
           this.body[i] = new EntitySegment(this, i);
           this.body[i].setLocationAndAngles(this.posX + 0.1D * i, this.posY, this.posZ + 0.1D * i, this.rand.nextFloat() * 360.0F, 0.0F);
           this.worldObj.spawnEntityInWorld(this.body[i]);
         }
       }
     }
   }
 public void onUpdate()
 {
	 super.onUpdate();
	 moveSegments();
 }
   protected void moveSegments()
   {	   
	   if(!this.isDead && this.body == null)
	   {
		   spawnBodySegments();
	   }
	   if(this.body != null)
	   {
		   for (int i = 0; i < MAX_SEGMENTS; i++)
		     {
		       Entity leader;
		       
		       if (i == 0)
		       {
		         leader = this;
		       }
		       else
		       {
		         leader = this.body[i - 1];
		       }

		       double leaderX = leader.posX - 0.5D;
		       double leaderY = leader.posY;
		       double leaderZ = leader.posZ - 0.5D;
		       
		       this.body[i].setPosition(leaderX, leaderY, leaderZ);
}

[dfmsguitar]

That looks pretty awesome, Thank you. I will review the dragon code as well since that's probably a good start on multi-part mobs. Much appreciated