add display case BER

src/main/java/com/github/minecraftschurlimods/bibliocraft/client/ClientHandler.java

@@ -1,6 +1,7 @@
 package com.github.minecraftschurlimods.bibliocraft.client;
 
 import com.github.minecraftschurlimods.bibliocraft.Bibliocraft;
+import com.github.minecraftschurlimods.bibliocraft.client.ber.DisplayCaseBER;
 import com.github.minecraftschurlimods.bibliocraft.client.ber.FancyArmorStandBER;
 import com.github.minecraftschurlimods.bibliocraft.client.ber.PotionShelfBER;
 import com.github.minecraftschurlimods.bibliocraft.client.ber.ShelfBER;
@@ -50,6 +51,7 @@ static void registerGeometryLoaders(ModelEvent.RegisterGeometryLoaders event) {
         @SubscribeEvent
         static void registerRenderers(EntityRenderersEvent.RegisterRenderers event) {
             event.registerEntityRenderer(BCEntities.FANCY_ARMOR_STAND.get(), ArmorStandRenderer::new);
+            event.registerBlockEntityRenderer(BCBlockEntities.DISPLAY_CASE.get(), DisplayCaseBER::new);
             event.registerBlockEntityRenderer(BCBlockEntities.FANCY_ARMOR_STAND.get(), FancyArmorStandBER::new);
             event.registerBlockEntityRenderer(BCBlockEntities.POTION_SHELF.get(), PotionShelfBER::new);
             event.registerBlockEntityRenderer(BCBlockEntities.SHELF.get(), ShelfBER::new);

src/main/java/com/github/minecraftschurlimods/bibliocraft/client/ber/DisplayCaseBER.java

@@ -0,0 +1,41 @@
+package com.github.minecraftschurlimods.bibliocraft.client.ber;
+
+import com.github.minecraftschurlimods.bibliocraft.content.displaycase.DisplayCaseBlock;
+import com.github.minecraftschurlimods.bibliocraft.content.displaycase.DisplayCaseBlockEntity;
+import com.github.minecraftschurlimods.bibliocraft.content.displaycase.WallDisplayCaseBlock;
+import com.github.minecraftschurlimods.bibliocraft.util.ClientUtil;
+import com.mojang.blaze3d.vertex.PoseStack;
+import com.mojang.math.Axis;
+import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.MultiBufferSource;
+import net.minecraft.client.renderer.blockentity.BlockEntityRenderer;
+import net.minecraft.client.renderer.blockentity.BlockEntityRendererProvider;
+import net.minecraft.client.renderer.entity.ItemRenderer;
+import net.minecraft.world.item.ItemDisplayContext;
+import net.minecraft.world.item.ItemStack;
+import net.minecraft.world.level.block.Block;
+
+public class DisplayCaseBER implements BlockEntityRenderer<DisplayCaseBlockEntity> {
+    @SuppressWarnings("unused")
+    public DisplayCaseBER(BlockEntityRendererProvider.Context context) {
+    }
+
+    @Override
+    public void render(DisplayCaseBlockEntity blockEntity, float partialTick, PoseStack stack, MultiBufferSource buffer, int light, int overlay) {
+        stack.pushPose();
+        ClientUtil.setupCenteredBER(stack, blockEntity);
+        Block block = blockEntity.getBlockState().getBlock();
+        if (block instanceof WallDisplayCaseBlock) {
+            stack.mulPose(Axis.YP.rotationDegrees(180));
+        } else if (block instanceof DisplayCaseBlock) {
+            stack.mulPose(Axis.XP.rotationDegrees(90));
+            stack.mulPose(Axis.ZP.rotationDegrees(180));
+        }
+        stack.translate(0, 0, 0.25f);
+        stack.scale(0.5f, 0.5f, 0.5f);
+        ItemRenderer renderer = Minecraft.getInstance().getItemRenderer();
+        ItemStack item = blockEntity.getItem(0);
+        renderer.render(item, ItemDisplayContext.FIXED, false, stack, buffer, light, overlay, renderer.getModel(item, blockEntity.getLevel(), null, 0));
+        stack.popPose();
+    }
+}