is there a cancel-able event that is called just before mobs spawn, preferable also having the reason for them spawning

 

CheckSpawn is the event that fires, although it doesn't look like it has any "reason" field.  Just the entity and position basically.

tried it, getting no response,

which bus is it on, and how do i use it ?

 

You can get answers to buses and other aspects of using events at my tutorial here: http://jabelarminecraft.blogspot.com/p/minecraft-forge-172-event-handling.html

 

Based on the package it is in (net.minecraftforge.event.entity.living) it is on the MinecraftForge.EVENT_BUS.  You can confirm that by checking the call hierarchy which confirms it -- the post to the bus happens in the canEntitySpawn() method in the ForgeEventFactory class.

 

here is my code

 

package me.el.mcFarms;

 

import net.minecraftforge.event.entity.living.LivingSpawnEvent;

import net.minecraftforge.event.entity.living.LivingSpawnEvent.CheckSpawn;

import net.minecraftforge.event.entity.player.EntityInteractEvent;

import net.minecraftforge.event.entity.player.ItemTooltipEvent;

import net.minecraftforge.event.entity.player.PlayerInteractEvent;

import net.minecraftforge.event.world.BlockEvent.BreakEvent;

import net.minecraftforge.event.world.BlockEvent.HarvestDropsEvent;

import cpw.mods.fml.common.eventhandler.SubscribeEvent;

 

public class EventDetector {

 

@SubscribeEvent

public void leaves(HarvestDropsEvent event){

System.out.println("EventDetector HarvestDropsEvent");

}

 

@SubscribeEvent

public void onbreak(BreakEvent event){

System.out.println("EventDetector BreakEvent");

}

 

 

@SubscribeEvent

private void spawnentity(CheckSpawn event) {

System.out.println("EventDetector spawnentity");

}

 

@SubscribeEvent

private void spawnentity(LivingSpawnEvent event) {

System.out.println("EventDetector LivingSpawnEvent");

}

 

@SubscribeEvent

private void clickentity(EntityInteractEvent event) {

System.out.println("EventDetector EntityInteractEvent");

}

 

@SubscribeEvent

private void tooltip(ItemTooltipEvent event) {

System.out.println("EventDetector ItemTooltipEvent");

}

 

@SubscribeEvent

public void onInteract(PlayerInteractEvent event){

System.out.println("EventDetector PlayerInteractEvent");

}

}

 

i and getting results from

HarvestDropsEvent

BreakEvent

PlayerInteractEvent

 

getting nothing from any others

 

Your methods are private when they should be public.

EntityEvent.EntityConstructing or EntityJoinWorldEvent

Solved, thankyou jabelar

dont know how i missed that , but sometimes it takes a different viewer to see some of the stupidest mistakes

 

Solved, thankyou jabelar

dont know how i missed that , but sometimes it takes a different viewer to see some of the stupidest mistakes

 

No problem.  I had to read it a couple times myself to see it.