Hey I was wondering how to code in something that when the player walks on something or basically touches the block in any way it executes code. I am not talking about anything portal like i want it to be solid.

This is in the Block base class and can be overridden by any custom block

 

/**
     * Called whenever an entity is walking on top of this block. Args: world, x, y, z, entity
     */
    public void onEntityWalking(World p_149724_1_, int p_149724_2_, int p_149724_3_, int p_149724_4_, Entity p_149724_5_) {}