Somes troubles with Minecraft vectors (Again!)

Hi everyone,

I'm working on a FOV sight for mobs but i'm in trouble with minecraft vectors.

I triyed to made a vector from where the mob is looking at (with rotationYaw et rotationYawHead) to the mob

and another one from the player to the mob (this one works great)

But with the first vector when i apply a dotProduct i think the vector is not: (Where the mob looking at/ mob) but more: (position of world 0,0,0, / mob) my dot Product reach ~1 when i move the player between the mob and the coord 0,0,0 no matter wich value rotationYaw is (or YawHead).

Here is my code:

    public void onLivingUpdate()
    {
    	
    	System.out.println("ANGLE YAW:" + this.rotationYaw);
    	System.out.println("ANGLE YAWHEAD:" + this.rotationYawHead);
    	
        float f1;
        float f2;
        float f3;
        float f4;

               f1 = MathHelper.cos(-this.rotationYawHead * 0.017453292F);
               f2 = MathHelper.sin(-this.rotationYawHead * 0.017453292F);
               f3 = -MathHelper.cos(-this.rotationPitch * 0.017453292F);
               f4 = MathHelper.sin(-this.rotationPitch * 0.017453292F);

               Vec3 vecSight = this.worldObj.getWorldVec3Pool().getVecFromPool((double)f2 * f3, (double)f4, (double)(f1 * f3)); 
               Vec3 vecMob = this.getPosition(1.0F);

               Vec3 vec2 = normalize(subtract(vecSight, vecMob));
            
    	Minecraft mc = Minecraft.getMinecraft();
        	EntityPlayer player = mc.thePlayer;

        	Vec3 vecPlayer = player.getPosition(1.0F);
        	
        	Vec3 vec1 = normalize(subtract(vecPlayer, vecMob));
        	
        	 double dp = dotProduct(vec1, vec2);
        	 System.out.println("DP : " + dp);
        	
        	
        	 
        	 if(dp > 1.0F - 0.5F)
        	 {
        		 System.out.println("SEE YOU");
        	 }
    	
        super.onLivingUpdate();
    }

I know it's a mess but it's for debugging

Thanks for help!

EDIT: Probleme solved juste forgot the mob position before rotationYaw ! Sorry