hi,

 

i want to build a block, that hostile mobs dont want to cross…

 

is there a possibility to change the pathNodeType in relation to the Entity what is collided with this block?

 

getAiPathNodeType() in relation to onEntityCollidedWithBlock() does not work

 

 

 

I do not think this is possible because you don't have a reference to the entity which initiates the pathing check whatsoever. I suppose you might be able to replace the basic EntityMoveHelper with your wrapper that does the check for your specific block but this might cause incompatibilities with mods that attempt to do the same.

You need to update the pathfinding code if you want the AI smart enough to avoid that block.  You can create custom PathNodeType objects (even though its an enum) using a Forge class called EnumHelper.  Example:

 

LADDER = EnumHelper.addEnum(PathNodeType.class, MODID + "LADDER", parameterTypes, 0.0F);  //0.0 means its as good as OPEN or WALKABLE