[1.15.x] Added entity nameplate rendering event hook (#6416)

patches/minecraft/net/minecraft/client/renderer/entity/EntityRenderer.java.patch

@@ -0,0 +1,15 @@
+--- a/net/minecraft/client/renderer/entity/EntityRenderer.java
++++ b/net/minecraft/client/renderer/entity/EntityRenderer.java
+@@ -54,8 +54,10 @@
+    }
+ 
+    public void func_225623_a_(T p_225623_1_, float p_225623_2_, float p_225623_3_, MatrixStack p_225623_4_, IRenderTypeBuffer p_225623_5_, int p_225623_6_) {
+-      if (this.func_177070_b(p_225623_1_)) {
+-         this.func_225629_a_(p_225623_1_, p_225623_1_.func_145748_c_().func_150254_d(), p_225623_4_, p_225623_5_, p_225623_6_);
++      net.minecraftforge.client.event.RenderNameplateEvent renderNameplateEvent = new net.minecraftforge.client.event.RenderNameplateEvent(p_225623_1_,p_225623_1_.func_145748_c_().func_150254_d(), p_225623_4_, p_225623_5_);
++      net.minecraftforge.common.MinecraftForge.EVENT_BUS.post(renderNameplateEvent);
++      if (renderNameplateEvent.getResult() != net.minecraftforge.eventbus.api.Event.Result.DENY && (renderNameplateEvent.getResult() == net.minecraftforge.eventbus.api.Event.Result.ALLOW || this.func_177070_b(p_225623_1_))) {
++         this.func_225629_a_(p_225623_1_, renderNameplateEvent.getContent(), p_225623_4_, p_225623_5_, p_225623_6_);
+       }
+    }
+ 

src/main/java/net/minecraftforge/client/event/RenderLivingEvent.java

@@ -28,6 +28,7 @@ import net.minecraft.entity.LivingEntity;
 
 public abstract class RenderLivingEvent<T extends LivingEntity, M extends EntityModel<T>> extends Event
 {
+
     private final LivingEntity entity;
     private final LivingRenderer<T, M> renderer;
     private final float partialRenderTick;
@@ -51,24 +52,10 @@ public abstract class RenderLivingEvent<T extends LivingEntity, M extends Entity
     {
         public Pre(LivingEntity entity, LivingRenderer<T, M> renderer, float partialRenderTick, MatrixStack matrixStack){ super(entity, renderer, partialRenderTick, matrixStack); }
     }
+
     public static class Post<T extends LivingEntity, M extends EntityModel<T>> extends RenderLivingEvent<T, M>
     {
         public Post(LivingEntity entity, LivingRenderer<T, M> renderer, float partialRenderTick, MatrixStack matrixStack){ super(entity, renderer, partialRenderTick, matrixStack); }
     }
 
-    // TODO: 1.15 moved all name rendering to EntityRenderer, such that there's not a Living-specific feature anymore
-    public abstract static class Specials<T extends LivingEntity, M extends EntityModel<T>> extends RenderLivingEvent<T, M>
-    {
-        public Specials(LivingEntity entity, LivingRenderer<T, M> renderer, MatrixStack matrixStack){ super(entity, renderer, 0, matrixStack); }
-
-        @Cancelable
-        public static class Pre<T extends LivingEntity, M extends EntityModel<T>> extends Specials<T, M>
-        {
-            public Pre(LivingEntity entity, LivingRenderer<T, M> renderer, MatrixStack matrixStack){ super(entity, renderer, matrixStack); }
-        }
-        public static class Post<T extends LivingEntity, M extends EntityModel<T>> extends Specials<T, M>
-        {
-            public Post(LivingEntity entity, LivingRenderer<T, M> renderer, MatrixStack matrixStack){ super(entity, renderer,  matrixStack); }
-        }
-    }
 }

src/main/java/net/minecraftforge/client/event/RenderNameplateEvent.java

@@ -0,0 +1,84 @@
+package net.minecraftforge.client.event;
+
+import com.mojang.blaze3d.matrix.MatrixStack;
+import net.minecraft.client.renderer.IRenderTypeBuffer;
+import net.minecraft.entity.Entity;
+import net.minecraftforge.common.MinecraftForge;
+import net.minecraftforge.event.entity.EntityEvent;
+import net.minecraftforge.eventbus.api.Event;
+
+/**
+ * RenderNameplateEvent is fired whenever the entity renderer attempts to render a name plate/tag of an entity.
+ * <br>
+ * {@link #nameplateContent} contains the content being rendered on the name plate/tag. This can be changed by mods.<br>
+ * {@link #originalContent} contains the original content being rendered on the name plate/tag. This cannot be
+ * changed by mods.<br>
+ * {@link #matrixStack} contains the matrix stack instance involved in rendering the name plate/tag. This cannot
+ * be changed by mods.<br>
+ * {@link #renderTypeBuffer} contains the render type buffer instance involved in rendering the name plate/tag.
+ * This cannot be changed by mods.<br>
+ * <br>
+ * This event has a result. {@link HasResult}. <br>
+ * ALLOW will force-render name plate/tag, DEFAULT will ignore the hook and continue using the vanilla check
+ * & DENY will prevent name plate/tag from rendering<br>
+ * <br>
+ * This event is fired on the {@link MinecraftForge#EVENT_BUS}.
+ **/
+@Event.HasResult
+public class RenderNameplateEvent extends EntityEvent
+{
+
+    private String nameplateContent;
+    private final String originalContent;
+    private final MatrixStack matrixStack;
+    private final IRenderTypeBuffer renderTypeBuffer;
+
+    public RenderNameplateEvent(Entity entity, String content, MatrixStack matrixStack, IRenderTypeBuffer renderTypeBuffer)
+    {
+        super(entity);
+        this.originalContent = content;
+        this.setContent(this.originalContent);
+        this.matrixStack = matrixStack;
+        this.renderTypeBuffer = renderTypeBuffer;
+    }
+
+    /**
+     * Sets the content that is to be rendered on the name plate/tag
+     */
+    public void setContent(String contents)
+    {
+        this.nameplateContent = contents;
+    }
+
+    /**
+     * The content being rendered on the name plate/tag
+     */
+    public String getContent()
+    {
+        return this.nameplateContent;
+    }
+
+    /**
+     * The original content being rendered on the name plate/tag
+     */
+    public String getOriginalContent()
+    {
+        return this.originalContent;
+    }
+
+    /**
+     * The matrix stack used during the rendering of the name plate/tag
+     */
+    public MatrixStack getMatrixStack()
+    {
+        return this.matrixStack;
+    }
+
+    /**
+     * The render type buffer used during the rendering of the name plate/tag
+     */
+    public IRenderTypeBuffer getRenderTypeBuffer()
+    {
+        return this.renderTypeBuffer;
+    }
+}

src/test/java/net/minecraftforge/debug/client/rendering/NameplateRenderingEventTest.java

@@ -0,0 +1,38 @@
+package net.minecraftforge.debug.client.rendering;
+
+import net.minecraft.entity.passive.CowEntity;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.text.TextFormatting;
+import net.minecraftforge.client.event.RenderNameplateEvent;
+import net.minecraftforge.eventbus.api.Event;
+import net.minecraftforge.eventbus.api.SubscribeEvent;
+import net.minecraftforge.fml.common.Mod;
+
+@Mod("nameplate_render_test")
+@Mod.EventBusSubscriber
+public class NameplateRenderingEventTest
+{
+
+    static final boolean ENABLED = false;
+
+    @SubscribeEvent
+    public static void onNameplateRender(RenderNameplateEvent event)
+    {
+
+        if(!ENABLED)
+        {
+            return;
+        }
+
+        if(event.getEntity() instanceof CowEntity)
+        {
+            event.setContent(TextFormatting.RED + "Evil Cow");
+            event.setResult(Event.Result.ALLOW);
+        }
+
+        if(event.getEntity() instanceof PlayerEntity)
+        {
+            event.setContent(TextFormatting.GOLD + "" + (event.getEntity()).getDisplayName().getString());
+        }
+    }
+}

src/test/resources/META-INF/mods.toml

@@ -54,4 +54,6 @@ loaderVersion="[28,)"
 [[mods]]
     modId="forgedebugmultilayermodel"
 [[mods]]
-    modId="trsr_transformer_test"
+    modId="trsr_transformer_test"
+[[mods]]
+    modId="nameplate_render_test"