WIP: eternal portals

src/main/java/ru/betterend/blocks/entities/EternalPedestalBlockEntity.java

@@ -0,0 +1,100 @@
+package ru.betterend.blocks.entities;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.inventory.Inventory;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.CompoundTag;
+import net.minecraft.network.packet.s2c.play.BlockEntityUpdateS2CPacket;
+import net.minecraft.util.Tickable;
+import ru.betterend.registry.EndBlockEntities;
+
+public class EternalPedestalBlockEntity extends BlockEntity implements Inventory, Tickable {
+	private ItemStack activeItem = ItemStack.EMPTY;
+	
+	private int age;
+	
+	public EternalPedestalBlockEntity() {
+		super(EndBlockEntities.ETERNAL_PEDESTAL);
+	}
+	
+	public int getAge() {
+		return this.age;
+	}
+
+	@Override
+	public void clear() {
+		this.activeItem = ItemStack.EMPTY;
+	}
+
+	@Override
+	public int size() {
+		return 1;
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return this.activeItem.isEmpty();
+	}
+
+	@Override
+	public ItemStack getStack(int slot) {
+		return this.activeItem;
+	}
+
+	@Override
+	public ItemStack removeStack(int slot, int amount) {
+		return this.removeStack(slot);
+	}
+
+	@Override
+	public ItemStack removeStack(int slot) {
+		return this.activeItem = ItemStack.EMPTY;
+	}
+
+	@Override
+	public void setStack(int slot, ItemStack stack) {
+		this.activeItem = stack;
+	}
+
+	@Override
+	public boolean canPlayerUse(PlayerEntity player) {
+		return true;
+	}
+	
+	@Override
+	public BlockEntityUpdateS2CPacket toUpdatePacket() {
+		return new BlockEntityUpdateS2CPacket(pos, 32, this.toInitialChunkDataTag());
+	}
+
+	@Override
+	public CompoundTag toInitialChunkDataTag() {
+		return this.toTag(new CompoundTag());
+	}
+	
+	@Override
+	public void fromTag(BlockState state, CompoundTag tag) {
+		super.fromTag(state, tag);
+		if (tag.contains("active_item")) {
+			CompoundTag itemTag = tag.getCompound("active_item");
+			this.activeItem = ItemStack.fromTag(itemTag);
+		}
+	}
+
+	@Override
+	public CompoundTag toTag(CompoundTag tag) {
+		tag.put("active_item", activeItem.toTag(new CompoundTag()));
+		return super.toTag(tag);
+	}
+
+	@Override
+	public void tick() {
+		if (!isEmpty()) {
+			this.age++;
+			if (age > 10000) {
+				this.age = 0;
+			}
+		}
+	}
+}