GengisKhan

Hihi, I tried to make an arrow useable with the vanilla bow. It worked in older version( 1.8 maybe? one year ago) but I don't understand the code now. I see a few possibilities: - Add the tag ItemTags.ARROW to the custom item (but i don't know how to that) -Maybe ArrowNockEvent? -... For now, the code compiles, but the arrow is not used in with the bow. My code: import net.minecraft.client.renderer.entity.TippedArrowRenderer; import net.minecraft.entity.EntityType; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.util.ActionResult; import net.minecraft.util.ActionResultType; import net.minecraftforge.common.MinecraftForge; import net.minecraftforge.event.RegistryEvent; import net.minecraftforge.event.entity.player.ArrowNockEvent; import net.minecraftforge.eventbus.api.SubscribeEvent; import net.minecraftforge.fml.client.registry.RenderingRegistry; import net.minecraftforge.fml.common.Mod; import net.minecraftforge.fml.event.lifecycle.FMLClientSetupEvent; import net.minecraftforge.fml.event.server.FMLServerStartingEvent; import org.apache.logging.log4j.LogManager; import org.apache.logging.log4j.Logger; @Mod(References.MODID) @Mod.EventBusSubscriber(modid = References.MODID, bus = Mod.EventBusSubscriber.Bus.MOD) public class ModClass { private static final Logger LOGGER = LogManager.getLogger(); private static TargetsMap targetsMap; public ModClass() { MinecraftForge.EVENT_BUS.register(this); } @SubscribeEvent public static void doRegisterItems(final RegistryEvent.Register<Item> event) { event.getRegistry().register(References.SEEKING_ITEM); } @SubscribeEvent public static void doRegisterEntities(final RegistryEvent.Register<EntityType<?>> event) { event.getRegistry().register(References.SEEKING_ENTITY); } @SubscribeEvent public static void doClientStuff(final FMLClientSetupEvent event) { Targeter targeter = new Targeter(); MinecraftForge.EVENT_BUS.addListener(targeter::onStartUsingBow); MinecraftForge.EVENT_BUS.addListener(targeter::onStopUsingBow); MinecraftForge.EVENT_BUS.addListener(targeter::onTickUsingBow); RenderingRegistry.registerEntityRenderingHandler(SeekingEntity.class, TippedArrowRenderer::new); } @SubscribeEvent public static void doServerStuff(final FMLServerStartingEvent event) { targetsMap = new TargetsMap(); } @SubscribeEvent public static void onArrowNock(final ArrowNockEvent event) { for(int i = 0; i < event.getPlayer().inventory.getSizeInventory(); ++i) { ItemStack itemstack1 = event.getPlayer().inventory.getStackInSlot(i); if (itemstack1.getItem() instanceof SeekingItem) { event.setAction(new ActionResult<>(ActionResultType.SUCCESS, itemstack1)); } } } public static TargetsMap getTargetMaps() { return targetsMap; } } import net.minecraft.entity.Entity; import net.minecraft.entity.LivingEntity; import net.minecraft.entity.projectile.AbstractArrowEntity; import net.minecraft.entity.projectile.ArrowEntity; import net.minecraft.item.ArrowItem; import net.minecraft.item.ItemStack; import net.minecraft.world.World; /** * Seeking arrow item. * Arrow that will target the target of the player. */ public class SeekingItem extends ArrowItem { public SeekingItem(Properties builder) { super(builder); } @Override public AbstractArrowEntity createArrow(World worldIn, ItemStack stack, LivingEntity shooter) { ArrowEntity arrowentity = null; int targetID = ModClass.getTargetMaps().get(shooter); if(targetID != -1) { Entity target = worldIn.getEntityByID(targetID); if(target != null) { arrowentity = new SeekingEntity(worldIn, shooter, target); } } if(arrowentity == null) { arrowentity = new ArrowEntity(worldIn, shooter); } arrowentity.setPotionEffect(stack); return arrowentity; } } import net.minecraft.entity.EntityClassification; import net.minecraft.entity.EntityType; import net.minecraft.item.Item; import net.minecraft.item.ItemGroup; import net.minecraft.tags.ItemTags; import net.minecraft.util.ResourceLocation; import net.minecraftforge.fml.network.NetworkRegistry; import net.minecraftforge.fml.network.simple.SimpleChannel; public enum References {; public static final String MODID = "seekingarrow"; public static final Item SEEKING_ITEM = new SeekingItem((new Item.Properties()).group(ItemGroup.COMBAT)) .setRegistryName(MODID, "seeking_item"); public static final EntityType<?> SEEKING_ENTITY = EntityType.Builder.<SeekingEntity>create(SeekingEntity::new, EntityClassification.MISC) .setTrackingRange(64).setUpdateInterval(20).setShouldReceiveVelocityUpdates(true) .size(0.5F, 0.5F) .build(MODID + ".seeking_entity").setRegistryName("seeking_entity"); private static final String PROTOCOL_VERSION = "1"; public static final SimpleChannel CHANNEL = NetworkRegistry.newSimpleChannel( new ResourceLocation(MODID, "main"), () -> PROTOCOL_VERSION, PROTOCOL_VERSION::equals, // https://mcforge.readthedocs.io/en/latest/networking/simpleimpl/ PROTOCOL_VERSION::equals ); static { CHANNEL.registerMessage(0, TargetPacket.class, TargetPacket::encode, TargetPacket::new, TargetPacket::handle); ItemTags.ARROWS.getAllElements().add(SEEKING_ITEM); } } Is there any problem in the code (is it clear) and am I missing something ?

In any RTS game, you can select 3D object with the mouse, that's what i call picking. Another example is engine like Blender or Maya, where you can select units with "picking " in the editor. I would like to have a invisible GUI in game, to be able to control the mouse (easy part). Then, when the player click on an unit or a block, I would like to know which unit or block he has clicked on.

Hello, for a mod I need make a picker to select a block or an entity with the mouse in Minecraft, something like an OpenGL picker How can i do that ? Thank you