this is my code
@SubscribeEvent
public void checkItem(BlockEvent.EntityPlaceEvent event) {
if (!event.getWorld().isRemote()) {
if (event.getEntity() instanceof PlayerEntity) {
PlayerEntity player = (PlayerEntity) event.getEntity();
Hand hand = player.getActiveHand();
ItemStack stack = player.getHeldItem(hand);
System.out.println(stack);
if (stack.getCount() == 1) {
System.out.println(stack);
int i = this.findItem(player, stack.getItem().getItem());
if (i != -1) {
ItemStack item = player.inventory.mainInventory.get(i);
player.inventory.mainInventory.set(i, ItemStack.EMPTY);
player.setHeldItem(hand, item);
System.out.println(stack + " 1");
}
}
}
}
}
public int findItem(PlayerEntity player, Item item) {
for (int i = 0; i < player.inventory.getSizeInventory(); i++) {
ItemStack stack = player.inventory.mainInventory.get(i);
if (!stack.isEmpty() && stack.getItem().getItem() == item) {
return i;
}
}
return -1;
}
