DC Render API

DC Render API

DC Render API is an advanced particle rendering & animation library for Minecraft mods. It exposes a complete, production-ready visual system for controllable particles, particle groups, emitters, styles, barrages, display entities, easing timelines and a lightweight event bus — and ships with a built-in mitigation strategy against aggressive addParticle culling from client-side optimization mods such as Embeddium / Rubidium / Inventory Particles. The project maintains Forge 1.20.1 / Fabric 1.20.1 / NeoForge 1.21.1 with full feature parity across all three loaders.

跳转至中文文档: README.md

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Platform Support

| Loader | Minecraft Version | Mod Artifact | JDK | Kotlin Language Adapter |
|—|—|—|—|—|
| Minecraft Forge | 1.20.1 | 0.2.0-1.20.1Forge | JDK 17+ | Kotlin-for-Forge-*-1.20.1.jar (by thedarkcolour) |
| Fabric | 1.20.1 | 0.2.0-1.20.1Fabric | JDK 17+ | fabric-language-kotlin-* (by FabricMC) |
| NeoForge | 1.21.1 | 1.0.0-1.21.1NeoForge | JDK 21+ | Kotlin-for-Forge-*-1.21.1-NeoForge.jar (by thedarkcolour) |

⚠ Mandatory three-jar setup for every loader: install the Kotlin language adapter + DC Render API jar + the main mod that consumes it (e.g. Dragon Curse Chronicles). Missing any one of the three will crash at load.

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Core Features

Main Capabilities

• Controllable Particle System: Particle instances tracked by stable id with explicit lifecycle & dead flag.
• Particle Animation System: Circle orbit, spiral orbit, wave motion, random walk, easing functions, and timeline keyframe interpolation.
• Server-Client Particle Sync: Two dedicated network packets (ParticleGroupPacket, ParticleSyncPacket) guarantee a consistent view across clients.
• Particle Group Management: ServerParticleGroupManager / ClientParticleGroupManager for batched create / tick / destroy.
• Particle Emitter System: ParticleEmitter interface + ParticleEmitterManager with rate & velocity settings.
• Particle Style System: ParticleStyle for size / alpha / RGB / lifetime; createStyle + applyStyleToParticle.
• Barrage System: BarrageManager supports complex patterns including circular barrages.
• Display Entity System: Lightweight wrapper around Minecraft Display Entities: DisplayEntity + DisplayEntityManager.
• Effect System: Effect + EffectManager combines multiple particles + animations into one reusable unit.
• Event System: Lightweight EventBus + ParticleEventBus; hooks for collision, hit, on-ground, liquid-entry.
• Noise System: PerlinNoise for natural-looking randomness.
• Smart Particle Dispatcher (pioneered in NeoForge host mod): Frame-aware batching + LOD falloff + object pooling + progressive emission + long-distance packet bypass; works around aggressive culling from client particle mods.

Animation Effects

• Circular Orbit
• Spiral Orbit
• Wave Motion
• Random Walk
• Easing functions (Linear, Quad, Cubic, Quart, Quint, Sine, Expo, Circ, Back, Elastic, Bounce …)
• Timeline interpolation (position, scale, rotation, color)
• Composition / layered animation

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Project Structure

DC Render API/                                  # Standalone monorepo (this directory)
├── src/                                        # Forge 1.20.1 sources
│   └── main/
│       ├── java/com/qituo/dcrapi/              # Java layer: mod entry, items, network, particles, platform
│       │   ├── DcRenderApi.java                #   Forge @Mod entry
│       │   ├── items/ParticleTesterItem.java   #   in-game particle debugger
│       │   ├── network/*                       #   server → client sync packets
│       │   ├── particles/
│       │   │   ├── emitters/*                  #   Emitter interface + manager
│       │   │   ├── style/*                     #   Style interface + manager
│       │   │   ├── DcRenderApiParticleManager.java  # Thread-safe particle registry
│       │   │   ├── ControlableParticle.java
│       │   │   └── ServerParticleGroup*.java
│       │   └── platform/DcRenderApiServices.java
│       └── kotlin/com/qituo/dcrapi/            # Kotlin layer: animation, barrage, color, config, display, effect, event, math, noise, render, shape, commands, builder, composition
│           ├── animation/timeline/             #   Timeline: Eases.kt, Timeline.kt, DoubleConstTimeAnimator, ValueConstTimeAnimator
│           ├── barrages/ color/ config/ display/ effects/ event/ math/ noise/
│           ├── particles/builder/ParticleGroupBuilder.kt  # Recommended builder API
│           ├── particles/command/  particles/composition/  particles/emitters/  particles/style/
│           └── render/ shapes/
├── fabric/DC Render API/                       # Fabric 1.20.1 sources (feature parity)
│   ├── src/main/java/                          #   Fabric particles, network, items, mixin, client initializer
│   ├── src/main/kotlin/                        #   Same Kotlin subsystem layout as Forge
│   ├── src/main/resources/fabric.mod.json      #   Fabric metadata
│   └── build.gradle / gradle.properties
├── neoforge/                                   # NeoForge 1.21.1 sources (feature parity)
│   ├── src/main/java + kotlin/                 #   Ported to 1.21.1 DataComponents / Holder / Codec / NeoForge.EVENT_BUS
│   └── build.gradle / gradle.properties
├── LICENSE.md                                  # MIT License (mirrors the standalone GitHub repo)
├── build.gradle                                # Forge 1.20.1 build; registers 'sourcesJar' task
├── gradle.properties                           # mod_version=0.2.0, mod_id=dcrapi, mod_license=MIT
├── gradlew / gradlew.bat / gradle/             # Gradle Wrapper
└── settings.gradle

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Installation (Player Side)

Forge 1.20.1

1. Install Minecraft Forge 1.20.1 (47.x or newer).
2. Download all three jars and drop them into your mods/ folder:

• Kotlin adapter: Kotlin-for-Forge-*-1.20.1.jar (CurseForge / Modrinth)
• DC Render API: dcrapi-0.2.0-1.20.1Forge.jar
• The consuming mod (e.g. Dragon Curse Chronicles Forge edition)

1. Launch the game.

Fabric 1.20.1

1. Install Fabric Loader 0.16.13+ and Fabric API 0.92.11+1.20.1.
2. Download all three jars and drop them into your mods/ folder:

• Kotlin adapter: fabric-language-kotlin-* (CurseForge / Modrinth)
• DC Render API: dcrapi-0.2.0-1.20.1Fabric.jar
• The consuming mod (e.g. Dragon Curse Chronicles Fabric edition)

1. Launch the game.

NeoForge 1.21.1

1. Install NeoForge 21.1.248+ for Minecraft 1.21.1.
2. Download all three jars and drop them into your mods/ folder:

• Kotlin adapter: Kotlin-for-Forge-*-1.21.1-NeoForge.jar (thedarkcolour)
• DC Render API: dcrapi-1.0.0-1.21.1NeoForge.jar
• The consuming mod (e.g. Dragon Curse Chronicles NeoForge edition)

1. Launch the game.

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Quick Start (Integrate into a Custom Mod)

Requirements Matrix

| Loader | Requirements |
|—|—|
| Forge 1.20.1 | Forge 47.x / JDK 17+ / Kotlin for Forge |
| Fabric 1.20.1 | Fabric Loader 0.16.13+ / Fabric API / fabric-language-kotlin / JDK 17+ |
| NeoForge 1.21.1 | NeoForge 21.1.248+ / Kotlin for Forge NeoForge / JDK 21+ |

Building Artifacts for All Three Loaders

# ============ Forge 1.20.1 ============
cd "DC Render API"
./gradlew build               # outputs → build/libs/dcrapi-0.2.0-1.20.1Forge.jar and -sources.jar

# ============ Fabric 1.20.1 ============
cd "DC Render API/fabric/DC Render API"
./gradlew build               # outputs → build/libs/dcrapi-0.2.0-1.20.1Fabric.jar and -sources.jar

# ============ NeoForge 1.21.1 ============
cd "DC Render API/neoforge"
./gradlew build               # outputs → build/libs/dcrapi-1.0.0-1.21.1NeoForge.jar and -sources.jar

All three build.gradle scripts register a sourcesJar task, so a -sources.jar is produced automatically on every build.

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Core Usage (Java Modders)

1. Create a Particle Group with Builder (Recommended)

import com.qituo.dcrapi.particles.builder.ParticleGroupBuilder;
import com.qituo.dcrapi.particles.ServerParticleGroup;
import net.minecraft.server.level.ServerLevel;
import net.minecraft.world.phys.Vec3;

ServerLevel level = ...;
Vec3 pos = player.position();

ServerParticleGroup group = new ParticleGroupBuilder()
    .position(pos)
    .world(level)
    .scale(2.0)
    .visibleRange(128.0)
    .maxTick(200)
    .buildAndRegister();

2. Create a Controllable Particle (Server → Client Synced)

import com.qituo.dcrapi.particles.DcRenderApiParticleManager;
import net.minecraft.core.particles.ParticleTypes;

int pid = DcRenderApiParticleManager.createParticle(
    ParticleTypes.FLAME,
    ParticleTypes.FLAME.get(),
    new Vec3(0, 64, 0)
);

3. Circle & Spiral Orbit Animations

import com.qituo.dcrapi.particles.ParticleAnimation;
import net.minecraft.world.phys.Vec3;

Vec3 center = player.position();
Vec3 orbitPos  = ParticleAnimation.createCircleOrbit(center, 2.0, 0.1, tick);
Vec3 spiralPos = ParticleAnimation.createSpiralOrbit(center, 1.0, 3.0, 0.1, tick);

4. Particle Hit Event (Deal Damage)

import com.qituo.dcrapi.event.ParticleEventBus;
import com.qituo.dcrapi.event.ParticleEvents.ParticleHitEntityEvent;

ParticleEventBus.INSTANCE.register(ParticleHitEntityEvent.class, ev -> {
    ev.getTarget().hurt(ev.getTarget().level().damageSources().magic(), 5.0F);
});

Event Types:
| Event Class | Trigger |
|—|—|
| ParticleCollideEvent | Particle collides with a block |
| ParticleHitEntityEvent | Particle hits a living entity |
| ParticleOnGroundEvent | Particle lands on the ground |
| ParticleOnLiquidEvent | Particle enters a liquid |

5. Particle Style System

import com.qituo.dcrapi.particles.style.ParticleStyleManager;
import net.minecraft.world.phys.Vec3;

int styleId = ParticleStyleManager.createStyle(
    1.0F,    // size
    0.5F,    // alpha
    new Vec3(1, 0, 0), // color (RGB)
    2.0      // lifetime in seconds
);
ParticleStyleManager.applyStyleToParticle(pid, styleId);

6. Timeline & Easing (Kotlin-friendly, Java works too)

import com.qituo.dcrapi.animation.timeline.Timeline;
import com.qituo.dcrapi.animation.timeline.Eases;

Timeline tl = new Timeline();
tl.addPositionAnimation(startPos, endPos, 200, Eases.INSTANCE.getEaseInOutCubic());
tl.addScaleAnimation(1.0F, 2.0F, 200, Eases.INSTANCE.getEaseOutBounce());
tl.start();

7. Config File (config/dcrapi_config.properties)

maxParticleGroups=1000       # Upper bound on active particle groups
defaultVisibleRange=64.0     # Fallback visible range in blocks
particleTickRate=1            # Tick frequency
enableParticleEvents=true     # Enables ParticleEventBus dispatching
enableDebugLogging=false      # Verbose log output

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Performance & Thread Safety

Performance Tips

1. Tune visibleRange: keep it between 32 and 128 blocks; larger values blow up bandwidth and draw cost quickly.
2. Frame-batched / progressive emission: for burst effects with >1000 particles, use a SmartParticleDispatcher-style queue pattern (see NeoForge Dragon Curse Chronicles reference implementation) instead of spawning everything in one tick.
3. Clean up promptly: schedule periodic ServerParticleGroupManager.clear() to reap dead groups.
4. Keep handlers light: never do I/O or heavy computation inside ParticleEventBus callbacks.

Thread-Safety Guarantees (in code)

• ConcurrentHashMap<Integer, ControlableParticle> backing DcRenderApiParticleManager.PARTICLES.
• AtomicInteger nextParticleId to avoid races during id allocation.
• CopyOnWriteArrayList for ParticleEventBus handler lists; safe to iterate while registering.
• Batch-remove pattern on tick: collect dead particle ids to a list, then removeAll at once — avoids the ConcurrentHashMap iterator weak-consistency gotcha.
• Per-particle try/catch: one misbehaving particle or packet handler can never abort an entire tick.

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In-Game Debug Tool

All three loaders register a Particle Tester creative item:

• Right-click: Spawn a standard demo particle group (orbit + style + event hook).
• Sneak + Right-click: Cycle debug mode: Basic → Builder → Event → Basic …
• Storage: the active test mode is now saved on the item stack itself (CustomData / NBT) instead of a JVM-static field — fixes cross-hand / cross-player state pollution.

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Compatibility Matrix

| Feature | Forge 1.20.1 | Fabric 1.20.1 | NeoForge 1.21.1 |
|—|—|—|—|
| MC Version | ✅ | ✅ | ✅ |
| Java | 17 | 17 | 21 |
| Kotlin Adapter | Kotlin-for-Forge | fabric-language-kotlin | Kotlin-for-Forge (NeoForge) |
| Particle Group Sync | ✅ | ✅ | ✅ |
| Particle Tester Item | ✅ | ✅ | ✅ |
| Auto sourcesJar Task | ✅ | ✅ | ✅ |

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Build Dependency Snippets (build.gradle)

// Forge 1.20.1:
dependencies {
    implementation fg.deobf("com.qituo:dcrapi:0.2.0-1.20.1Forge")
}

// Fabric 1.20.1:
dependencies {
    modImplementation("com.qituo:dcrapi:0.2.0-1.20.1Fabric")
}

// NeoForge 1.21.1:
dependencies {
    implementation("com.qituo:dcrapi:1.0.0-1.21.1NeoForge")
}

Maven coordinates are the target format; if not yet uploaded to a Maven repo, drop the jars into a local libs/ folder and use files(...) as a dependency.

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Known Consumer / Real-World Usage

Dragon Curse Chronicles is the first-party reference consumer of DC Render API:

• Pig Talisman laser / Dragon Talisman fireball → circular orbit + wave particle trails
• Uncle’s Dried Puffer Fish laser → ~1200 particles with two counter-rotating gradient helices, dispatched progressively via SmartParticleDispatcher
• Origin Aura / Talisman activation effects → particle groups + timeline easing

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Migration Guide (0.1.x → 0.2.x)

Before (0.1.x):

ServerParticleGroup group = new ServerParticleGroup();
group.initServerGroup(pos, world);
group.scale = 1.5;
ServerParticleGroupManager.addParticleGroup(group, pos, world);

After (0.2.x, Builder):

ServerParticleGroup group = new ParticleGroupBuilder()
    .position(pos).world(world).scale(1.5).visibleRange(64.0).maxTick(100)
    .buildAndRegister();

Highlights of the 0.2.0 release:

• mod_version=0.2.0, MIT license explicitly declared in gradle.properties + standalone LICENSE.md.
• All three loader builds register a sourcesJar task; -sources.jar is produced on every build.
• ParticleTesterItem: test-mode state moved from a static JVM field into item stack CustomData / NBT; eliminates cross-player state pollution.
• DcRenderApiParticleManager: nextParticleId changed from plain int → AtomicInteger; tick removal switched to batch-remove pattern for stronger consistency.

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License & Authors

Released under the MIT License — see the official standalone license blob at LICENSE.md on GitHub.

• Current version: Forge 0.2.0 / Fabric 0.2.0-1.20.1Fabric / NeoForge 1.0.0 (version numbers are independent per loader)
• Authors: QiTuo, Yifei
• Source repo: https://github.com/19136644525lxy/DC-Render-API
• Distribution: CurseForge / Modrinth