FIREWORK!

Introduction

• A firework / particle effects datapack for Minecraft 1.21.11.
• Author: Mxpea (Aurelith / Mxpea).
• Automatically initializes scoreboards and storage, providing random fireworks, rainbow, ring, ray, line, letter pixel effects, and more.

Feature Overview

• Auto-load and Tick
• Load function: firework:load
• Tick function: firework:tick
• Registration files: load.json / tick.json

• Random Firework
• Main entry: firework:fireworks/ran_firework
• Parameter subroutines: effects/fireworks_ran/

• Particles & Rainbow
• Rainbow value generation: firework:effects/rainbow/rainbow_color_gen
• Rainbow particle entry: firework:run/rainbow
• Random flash x10: firework:run/ran_flash_10
• Random Dust: firework:run/ran_dust

• Rings, Rays, Lines
• Rings: firework:run/ring_normal, firework:run/ring_rainbow
• Rays: firework:run/ray_summon
• Lines: firework:run/line_summon

• Lightning Effect
• Lightning entry: firework:run/lightning_summon
• Calculation routines: lightning/

• Spherical Particles
• Sphere entry: firework:run/ball_summon
• Calculation routines: ball/

• Other Effects & Utilities
• Colored falling block explosion: firework:run/colord_block_exp
• UUID utilities: firework:gu/generate, firework:gu/convert, firework:tools/uuid_get
• Letter pixels: letters/

Quick Start

1. Place the firework/ folder into the world’s datapacks/ directory.
2. Run any entry function to test effects (see example commands below).

Note: firework:load initializes many scoreboards (e.g., rings, ray_settings, line) and storage keys.

Example Commands

• /function firework:fireworks/ran_firework: Generates a random firework (colors, trail, twinkle, type random).
• /function firework:run/ran_flash_10: Triggers 10 random flash particles in quick succession, good for strobe effects.
• /function firework:run/ran_dust: Spawns a random colored dust particle.
• /function firework:run/rainbow: Spawns rainbow particles using current rainbow parameters.
• /function firework:run/ring_normal: Renders a ring with fixed particles (end_rod).
• /function firework:run/ring_rainbow: Renders a ring with rainbow particles.
• /function firework:run/ray_summon: Spawns a ray effect (requires velocity/lifetime parameters set first).
• /function firework:run/line_summon: Draws line particles between start and end points with step count.
• /function firework:run/lightning_summon: Spawns a lightning effect (requires attraction strength/step length etc. set first).
• /function firework:run/ball_summon: Spawns spherical particles based on radius and layer count.
• /function firework:run/colord_block_exp: Spawns a colored falling block explosion (depends on Motion API).
• /function firework:letters/a: Draws the pixel pattern of letter A.
• /function firework:gu/generate: Generates UUID data and writes to storage.
• /function firework:tools/uuid_get: Reads and displays UUID info of current entity/context.

Parameter Setup Hints (Common)

• Ring effect depends on: steps rings, distance rings.
• Sphere effect depends on: steps ball, distance ball (distance ball is radius; implementation uses scaled storage for finer control).
• Ray effect depends on: speed ray_settings, lifetime ray_settings, offset_x ray_settings, offset_y ray_settings.
• Line effect depends on: steps line, and requires tag @s add set_poz to record endpoint coordinates.
• Lightning effect depends on: attrack lightning, stepl lightning, delta lightning, maxstep lightning, and requires tag @s add set_poz to record endpoint coordinates.

Directory Index

• Entry functions: run/
• Firework parameter routines: effects/fireworks_ran/
• Ring calculation: effects/ring/
• Sphere: ball/
• Ray: ray/
• Line: line/
• Lightning: lightning/
• Letters: letters/

Dependencies

• This pack does not include Mxpea.s.Motion.API. Some colored falling block effects (e.g., firework:run/colord_block_exp) depend on that API.

Common Issues

• /function no response: Verify datapack path and run /reload, check that load.json and tick.json exist.
• Ray/line not executing: Set required scoreboard parameters first (see “Parameter Setup Hints” above).
• Sphere effect not showing: Check that steps ball > 0 and distance ball is within a reasonable range.

License

• This project is licensed under the MIT License, see LICENSE.

Acknowledgements

• Includes UUID-related code from gu, originally under The Unlicense; redistributed according to its terms.