How to detect when a certain item entity collide a block

[madmanu]

Hello , First sorry if i make english mistakes , I'm french

I would like to know if it's possible to execute something when the entity of item obsidian (when you throw it for example) collide the block and "consume" or delete the entity after .

Thank you in advance

 

(I have a mod which create a block but i don't think it will help , there is nothing in it  , also i am a noob in modding ^^' it will be super if you could show me the final code , sorry for the disturbance)

[madmanu]

okay , if i understand i will use this

public void onEntityCollidedWithBlock( World world, int x, int y, int z, Entity entity ) {

and do my event .

 

But i don't understand what to change to execute only if the entity is an item of obsidian .

[madmanu]

I'm really not an expert ^^' may I have the code please ? I really don't know how to use that and i don't want to use your time

[madmanu]

public void onEntityCollidedWithBlock(World world, int i, int j, int k, Entity entity){


//when mod collides
if(entity instanceof EntityItem){
world.createExplosion((Entity)null, i, j, k, 4F, true);
}

 

I use an explosion to test , but it don't seems to work . And if i succed to test if the entity is an item , i really don't know how to test it's an obsidian

[coolAlias]

Part of the issue is that onEntityCollidedWithBlock only gets called if the entity physically enters the block's space; for completely solid 1 meter cubes, this is impossible.

[madmanu]

I have found a way to change the model , don't worry

[madmanu]

I have an error :

error: incomparable types: Entity and Item

if(entity == Item.getItemFromBlock(Blocks.obsidian)){

          ^

 

[madmanu]

if(entityItem.getEntityItem(entity) == Item.getItemFromBlock(Blocks.obsidian)){

I try this but it don't work

[coolAlias]

I think you should take a step back and learn more about Java here.

 

entityItem.getEntityItem() returns an ItemStack, which you are comparing to an Item. You have to compare apples to apples, so to speak:

 

if (entityItem.getEntityItem().getItem() == Item.getItemFromBlock(Blocks.obsidian))

 

Also, you are confusing both me and probably yourself by having 'entity' AND 'entityItem' - are they the same? Where are these entities coming from?

[madmanu]

it's true that i don't know enough , it's y first "big" project , also your condition don't work ^^' it can't find symbol

[Elix_x]

Method called when entity collides:

public void onEntityCollidedWithBlock(World world, int i, int j, int k, Entity entity){

if entity is an item

if(entity instanceof EntityItem){

if it handles obsidian as item

if(((EntityItem) entity).getEntityItem().getItem() == Item.getItemFromBlock(Blocks.obsidian)){

And now the action. Example:

world.setBlock(i, j, k, Blocks.glass);

And don't forget to remove item:

entity.setDead();

 

Complete code:

public void onEntityCollidedWithBlock(World world, int i, int j, int k, Entity entity){
if(entity instanceof EntityItem){
  if(((EntityItem) entity).getEntityItem().getItem() == Item.getItemFromBlock(Blocks.obsidian)){
   world.setBlock(i, j, k, Blocks.glass);
   entity.setDead();
  }
}
}

[madmanu]

Thank you ! It will really help me