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;
+			}
+		}
+	}
+}

src/main/java/ru/betterend/blocks/entities/render/EternalPedestalItemRenderer.java

@@ -0,0 +1,62 @@
+package ru.betterend.blocks.entities.render;
+
+import net.fabricmc.api.EnvType;
+import net.fabricmc.api.Environment;
+
+import net.minecraft.block.BlockState;
+import net.minecraft.block.enums.SlabType;
+import net.minecraft.client.MinecraftClient;
+import net.minecraft.client.render.RenderLayer;
+import net.minecraft.client.render.VertexConsumer;
+import net.minecraft.client.render.VertexConsumerProvider;
+import net.minecraft.client.render.block.entity.BlockEntityRenderDispatcher;
+import net.minecraft.client.render.block.entity.BlockEntityRenderer;
+import net.minecraft.client.render.model.json.ModelTransformation;
+import net.minecraft.client.util.math.MatrixStack;
+import net.minecraft.client.util.math.Vector3f;
+import net.minecraft.item.ItemStack;
+import net.minecraft.util.DyeColor;
+import net.minecraft.util.Identifier;
+import net.minecraft.util.math.MathHelper;
+
+import ru.betterend.blocks.EternalPedestal;
+import ru.betterend.blocks.entities.EternalPedestalBlockEntity;
+import ru.betterend.client.render.BeamRenderer;
+
+@Environment(EnvType.CLIENT)
+public class EternalPedestalItemRenderer extends BlockEntityRenderer<EternalPedestalBlockEntity> {
+	private static final Identifier BEAM_TEXTURE = new Identifier("textures/entity/end_gateway_beam.png");
+	
+	public EternalPedestalItemRenderer(BlockEntityRenderDispatcher dispatcher) {
+		super(dispatcher);
+	}
+
+	@Override
+	public void render(EternalPedestalBlockEntity entity, float tickDelta, MatrixStack matrices,
+			VertexConsumerProvider vertexConsumers, int light, int overlay) {
+		
+		if (entity.isEmpty()) return;
+		
+		BlockState state = entity.getWorld().getBlockState(entity.getPos());
+		SlabType type = state.get(EternalPedestal.TYPE);
+		
+		ItemStack activeItem = entity.getStack(0);
+		matrices.push();
+		if (type.equals(SlabType.DOUBLE)) {
+			matrices.translate(0.5, 1.5, 0.5);
+		} else {
+			matrices.translate(0.5, 1.0, 0.5);
+		}
+		float altitude = MathHelper.sin((entity.getAge() + tickDelta) / 10.0F) * 0.1F;
+		float rotation = (entity.getAge() + tickDelta) / 25.0F + 6.0F;
+		matrices.translate(0.0D, altitude, 0.0D);
+		matrices.multiply(Vector3f.POSITIVE_Y.getRadialQuaternion(rotation));
+		MinecraftClient minecraft = MinecraftClient.getInstance();
+		minecraft.getItemRenderer().renderItem(activeItem, ModelTransformation.Mode.GROUND, light, overlay, matrices, vertexConsumers);
+		float[] colors = DyeColor.MAGENTA.getColorComponents();
+		int y = entity.getPos().getY();
+		VertexConsumer vertexConsumer = vertexConsumers.getBuffer(RenderLayer.getBeaconBeam(BEAM_TEXTURE, true));
+		BeamRenderer.renderLightBeam(matrices, vertexConsumer, tickDelta, -y, 1024 - y, colors, 0.25F, 0.15F, 0.2F);
+		matrices.pop();
+	}
+}