Flywheel ECS

- Add SimpleEntityVisual which is composed of many EntityComponents.
- Would be nice to expand on this system, particularly to add components
  when registering visualizers.
- Misc. doc updates.

src/main/java/com/jozufozu/flywheel/api/visual/LitVisual.java

@@ -5,28 +5,30 @@ import java.util.function.LongConsumer;
 import net.minecraft.core.SectionPos;
 
 /**
- * A non-moving visual that listens to light updates.
- * <br>
- * If your visual moves around in the world at all, you should use {@link TickableVisual} or {@link DynamicVisual},
- * and poll for light yourself rather than listening for updates.
+ * A visual that listens to light updates.
+ *
+ * <p>If your visual moves around in the world at all, you should use {@link TickableVisual} or {@link DynamicVisual},
+ * and poll for light yourself along with listening for updates. When your visual moves to a different section, call
+ * {@link Notifier#notifySectionsChanged}.</p>
  */
 public interface LitVisual extends Visual {
 	/**
 	 * Called when a section this visual is contained in receives a light update.
-	 * <br>
-	 * Even if multiple sections are updated at the same time, this method will only be called once.
-	 * <br>
-	 * The implementation is free to parallelize calls to this method, as well as call into
+	 *
+	 * <p>Even if multiple sections are updated at the same time, this method will only be called once.</p>
+	 *
+	 * <p>The implementation is free to parallelize calls to this method, as well as call into
 	 * {@link DynamicVisual#beginFrame} simultaneously. It is safe to query/update light here,
 	 * but you must ensure proper synchronization if you want to mutate anything outside this
-	 * visual or anything that is also mutated by {@link DynamicVisual#beginFrame}.
+	 * visual or anything that is also mutated by {@link DynamicVisual#beginFrame}.</p>
 	 */
 	void updateLight();
 
 	/**
 	 * Collect the sections that this visual is contained in.
-	 * <br>
-	 * This method is called upon visual creation, and the frame after {@link Notifier#notifySectionsChanged} is called.
+	 *
+	 * <p>This method is called upon visual creation, and the frame after
+	 * {@link Notifier#notifySectionsChanged} is called.</p>
 	 *
 	 * @param consumer The consumer to provide the sections to.
 	 * @see SectionPos#asLong
@@ -35,9 +37,9 @@ public interface LitVisual extends Visual {
 
 	/**
 	 * Set the notifier object.
-	 * <br>
-	 * This method is only called once, upon visual creation,
-	 * after {@link #init} and before {@link #collectLightSections}.
+	 *
+	 * <p>This method is only called once, upon visual creation,
+	 * after {@link #init} and before {@link #collectLightSections}.</p>
 	 *
 	 * @param notifier The notifier.
 	 */

src/main/java/com/jozufozu/flywheel/api/visual/Visual.java

@@ -11,13 +11,17 @@ package com.jozufozu.flywheel.api.visual;
 public interface Visual {
 	/**
 	 * Initialize instances here.
+	 *
+	 * <p>This method will be called exactly once upon visual creation.</p>
 	 */
 	void init(float partialTick);
 
 	/**
-	 * Update instances here. Good for when instances don't change very often and when animations are GPU based.
-	 * <br>
-	 * <br> If your animations are complex or more CPU driven, see {@link DynamicVisual} or {@link TickableVisual}.
+	 * Update instances here.
+	 *
+	 * <p>Good for when instances don't change very often and when animations are GPU based.
+	 *
+	 * <br>If your animations are complex or more CPU driven, see {@link DynamicVisual} or {@link TickableVisual}.</p>
 	 */
 	void update(float partialTick);
 

src/main/java/com/jozufozu/flywheel/lib/visual/AbstractEntityVisual.java

@@ -33,17 +33,11 @@ import net.minecraft.world.phys.Vec3;
 public abstract class AbstractEntityVisual<T extends Entity> extends AbstractVisual implements EntityVisual<T> {
 	protected final T entity;
 	protected final EntityVisibilityTester visibilityTester;
-	protected final ShadowComponent shadow;
-	protected final FireComponent fire;
-	protected final BoundingBoxComponent boundingBox;
 
 	public AbstractEntityVisual(VisualizationContext ctx, T entity) {
 		super(ctx, entity.level());
 		this.entity = entity;
 		visibilityTester = new EntityVisibilityTester(entity, ctx.renderOrigin(), 1.5f);
-		shadow = new ShadowComponent(ctx, entity);
-		fire = new FireComponent(ctx, entity);
-		boundingBox = new BoundingBoxComponent(ctx, entity);
 	}
 
 	@Override
@@ -93,11 +87,4 @@ public abstract class AbstractEntityVisual<T extends Entity> extends AbstractVis
 	public boolean isVisible(FrustumIntersection frustum) {
 		return entity.noCulling || visibilityTester.check(frustum);
 	}
-
-	@Override
-	protected void _delete() {
-		shadow.delete();
-		fire.delete();
-		boundingBox.delete();
-	}
 }

src/main/java/com/jozufozu/flywheel/lib/visual/EntityComponent.java

@@ -0,0 +1,9 @@
+package com.jozufozu.flywheel.lib.visual;
+
+import com.jozufozu.flywheel.api.visual.VisualFrameContext;
+
+public interface EntityComponent {
+	void beginFrame(VisualFrameContext context);
+
+	void delete();
+}

src/main/java/com/jozufozu/flywheel/lib/visual/SimpleEntityVisual.java

@@ -0,0 +1,36 @@
+package com.jozufozu.flywheel.lib.visual;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import com.jozufozu.flywheel.api.visual.DynamicVisual;
+import com.jozufozu.flywheel.api.visual.VisualFrameContext;
+import com.jozufozu.flywheel.api.visualization.VisualizationContext;
+
+import net.minecraft.world.entity.Entity;
+
+public class SimpleEntityVisual<T extends Entity> extends AbstractEntityVisual<T> implements DynamicVisual {
+	protected final List<EntityComponent> components = new ArrayList<>();
+
+	public SimpleEntityVisual(VisualizationContext ctx, T entity) {
+		super(ctx, entity);
+	}
+
+	public void addComponent(EntityComponent component) {
+		components.add(component);
+	}
+
+	@Override
+	public void beginFrame(VisualFrameContext ctx) {
+		for (EntityComponent component : components) {
+			component.beginFrame(ctx);
+		}
+	}
+
+	@Override
+	protected void _delete() {
+		for (EntityComponent component : components) {
+			component.delete();
+		}
+	}
+}

src/main/java/com/jozufozu/flywheel/lib/visual/components/BoundingBoxComponent.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.lib.visual;
+package com.jozufozu.flywheel.lib.visual.components;
 
 import org.joml.Vector4f;
 import org.joml.Vector4fc;
@@ -15,6 +15,8 @@ import com.jozufozu.flywheel.lib.material.StandardMaterialShaders;
 import com.jozufozu.flywheel.lib.math.MoreMath;
 import com.jozufozu.flywheel.lib.model.QuadMesh;
 import com.jozufozu.flywheel.lib.model.SingleMeshModel;
+import com.jozufozu.flywheel.lib.visual.EntityComponent;
+import com.jozufozu.flywheel.lib.visual.InstanceRecycler;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.LightTexture;
@@ -22,7 +24,7 @@ import net.minecraft.util.Mth;
 import net.minecraft.world.entity.Entity;
 import net.minecraft.world.entity.LivingEntity;
 
-public class BoundingBoxComponent {
+public class BoundingBoxComponent implements EntityComponent {
 	private static final Material MATERIAL = SimpleMaterial.builder()
 			.shaders(StandardMaterialShaders.WIREFRAME)
 			.backfaceCulling(false)
@@ -53,10 +55,12 @@ public class BoundingBoxComponent {
 		return instance;
 	}
 
-	public void showEyeBox(boolean renderEyeBox) {
+	public BoundingBoxComponent showEyeBox(boolean renderEyeBox) {
 		this.showEyeBox = renderEyeBox;
+		return this;
 	}
 
+	@Override
 	public void beginFrame(VisualFrameContext context) {
 		recycler.resetCount();
 
@@ -93,6 +97,7 @@ public class BoundingBoxComponent {
 		recycler.discardExtra();
 	}
 
+	@Override
 	public void delete() {
 		recycler.delete();
 	}

src/main/java/com/jozufozu/flywheel/lib/visual/components/FireComponent.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.lib.visual;
+package com.jozufozu.flywheel.lib.visual.components;
 
 import org.joml.Vector4f;
 import org.joml.Vector4fc;
@@ -14,6 +14,8 @@ import com.jozufozu.flywheel.lib.material.SimpleMaterial;
 import com.jozufozu.flywheel.lib.model.ModelCache;
 import com.jozufozu.flywheel.lib.model.QuadMesh;
 import com.jozufozu.flywheel.lib.model.SingleMeshModel;
+import com.jozufozu.flywheel.lib.visual.EntityComponent;
+import com.jozufozu.flywheel.lib.visual.InstanceRecycler;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.mojang.math.Axis;
 
@@ -26,7 +28,7 @@ import net.minecraft.world.entity.Entity;
 /**
  * A component that uses instances to render the fire animation on an entity.
  */
-public class FireComponent {
+public class FireComponent implements EntityComponent {
 	private static final Material FIRE_MATERIAL = SimpleMaterial.builderOf(Materials.CHUNK_CUTOUT_UNSHADED)
 			.backfaceCulling(false) // Disable backface because we want to be able to flip the model.
 			.build();
@@ -66,6 +68,7 @@ public class FireComponent {
 	 *
 	 * @param context The frame context.
 	 */
+	@Override
 	public void beginFrame(VisualFrameContext context) {
 		fire0.resetCount();
 		fire1.resetCount();
@@ -118,6 +121,7 @@ public class FireComponent {
 		}
 	}
 
+	@Override
 	public void delete() {
 		fire0.delete();
 		fire1.delete();

src/main/java/com/jozufozu/flywheel/lib/visual/components/ShadowComponent.java

@@ -1,4 +1,4 @@
-package com.jozufozu.flywheel.lib.visual;
+package com.jozufozu.flywheel.lib.visual.components;
 
 import org.jetbrains.annotations.Nullable;
 import org.joml.Vector4f;
@@ -16,6 +16,8 @@ import com.jozufozu.flywheel.lib.instance.ShadowInstance;
 import com.jozufozu.flywheel.lib.material.SimpleMaterial;
 import com.jozufozu.flywheel.lib.model.QuadMesh;
 import com.jozufozu.flywheel.lib.model.SingleMeshModel;
+import com.jozufozu.flywheel.lib.visual.EntityComponent;
+import com.jozufozu.flywheel.lib.visual.InstanceRecycler;
 
 import net.minecraft.client.Minecraft;
 import net.minecraft.client.renderer.LightTexture;
@@ -40,7 +42,7 @@ import net.minecraft.world.phys.shapes.VoxelShape;
  * <br>
  * The shadow will be cast on blocks at most {@code min(radius, 2 * strength)} blocks below the entity.</p>
  */
-public class ShadowComponent {
+public class ShadowComponent implements EntityComponent {
 	private static final Material SHADOW_MATERIAL = SimpleMaterial.builder()
 			.texture(new ResourceLocation("textures/misc/shadow.png"))
 			.mipmap(false)
@@ -88,8 +90,9 @@ public class ShadowComponent {
 	 *
 	 * @param radius The radius of the shadow, in blocks.
 	 */
-	public void radius(float radius) {
+	public ShadowComponent radius(float radius) {
 		this.radius = Math.min(radius, 32);
+		return this;
 	}
 
 	/**
@@ -97,8 +100,9 @@ public class ShadowComponent {
 	 *
 	 * @param strength The strength of the shadow.
 	 */
-	public void strength(float strength) {
+	public ShadowComponent strength(float strength) {
 		this.strength = strength;
+		return this;
 	}
 
 	/**
@@ -107,6 +111,7 @@ public class ShadowComponent {
 	 *
 	 * @param context The frame context.
 	 */
+	@Override
 	public void beginFrame(VisualFrameContext context) {
 		instances.resetCount();
 
@@ -210,6 +215,7 @@ public class ShadowComponent {
 		return shape;
 	}
 
+	@Override
 	public void delete() {
 		instances.delete();
 	}

src/main/java/com/jozufozu/flywheel/vanilla/MinecartVisual.java

@@ -14,7 +14,10 @@ import com.jozufozu.flywheel.lib.model.ModelHolder;
 import com.jozufozu.flywheel.lib.model.Models;
 import com.jozufozu.flywheel.lib.model.SingleMeshModel;
 import com.jozufozu.flywheel.lib.model.part.ModelPartConverter;
-import com.jozufozu.flywheel.lib.visual.AbstractEntityVisual;
+import com.jozufozu.flywheel.lib.visual.SimpleEntityVisual;
+import com.jozufozu.flywheel.lib.visual.components.BoundingBoxComponent;
+import com.jozufozu.flywheel.lib.visual.components.FireComponent;
+import com.jozufozu.flywheel.lib.visual.components.ShadowComponent;
 import com.mojang.blaze3d.vertex.PoseStack;
 import com.mojang.math.Axis;
 
@@ -26,7 +29,7 @@ import net.minecraft.world.level.block.RenderShape;
 import net.minecraft.world.level.block.state.BlockState;
 import net.minecraft.world.phys.Vec3;
 
-public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVisual<T> implements TickableVisual, DynamicVisual {
+public class MinecartVisual<T extends AbstractMinecart> extends SimpleEntityVisual<T> implements TickableVisual, DynamicVisual {
 	public static final ModelHolder CHEST_BODY_MODEL = createBodyModelHolder(ModelLayers.CHEST_MINECART);
 	public static final ModelHolder COMMAND_BLOCK_BODY_MODEL = createBodyModelHolder(ModelLayers.COMMAND_BLOCK_MINECART);
 	public static final ModelHolder FURNACE_BODY_MODEL = createBodyModelHolder(ModelLayers.FURNACE_MINECART);
@@ -48,7 +51,6 @@ public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVi
 	public MinecartVisual(VisualizationContext ctx, T entity, ModelHolder bodyModel) {
 		super(ctx, entity);
 		this.bodyModel = bodyModel;
-		shadow.radius(0.7f);
 	}
 
 	private static ModelHolder createBodyModelHolder(ModelLayerLocation layer) {
@@ -59,6 +61,10 @@ public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVi
 
 	@Override
 	public void init(float partialTick) {
+		addComponent(new ShadowComponent(visualizationContext, entity).radius(0.7f));
+		addComponent(new FireComponent(visualizationContext, entity));
+		addComponent(new BoundingBoxComponent(visualizationContext, entity));
+
 		body = createBodyInstance();
 		blockState = entity.getDisplayBlockState();
 		contents = createContentsInstance();
@@ -109,9 +115,7 @@ public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVi
 
 	@Override
 	public void beginFrame(VisualFrameContext context) {
-		shadow.beginFrame(context);
-		fire.beginFrame(context);
-		boundingBox.beginFrame(context);
+		super.beginFrame(context);
 
 		if (!isVisible(context.frustum())) {
 			return;
@@ -210,7 +214,6 @@ public class MinecartVisual<T extends AbstractMinecart> extends AbstractEntityVi
 		if (contents != null) {
 			contents.delete();
 		}
-		super._delete();
 	}
 
 	public static boolean shouldSkipRender(AbstractMinecart minecart) {