Minecraft firework rocket command
A Minecraft firework rocket is two objects combined: the rocket itself, which only controls flight duration, and one or more stars inside it, which set the explosion's shape, color, fade, trail and twinkle. The /give command assembles both into a single item that launches fireworks exactly as configured.
The fade color is a separate, optional list (`fade_colors`): without it, the burst simply fades out in its original color instead of shifting color mid-air.
Flight 1 is the generator's minimum: the rocket bursts almost immediately, the pattern used when burst height matters less than launching several in a row.
Both effects sit in the same `explosions` list: a single flight-3 rocket bursts both patterns at the exact same moment, not one after the other.
Flight duration (1 to 3) sets how long the rocket rises before exploding, higher means higher. In normal crafting it matches the amount of gunpowder used. Rockets also boost elytra, and the duration affects the strength of the push.
It is the climb time before the burst: 1 is the minimum accepted value and pops almost instantly, 3 is the maximum and climbs higher before exploding. There is no flight 0 or anything above 3 in the generator.
Up to 7. The number comes from actual crafting: paper, gunpowder and the stars all need to fit together in the 3x3 grid, and every star in one rocket explodes at the same instant.
Because the legacy name is `Flicker`, not `Twinkle`; the field only became `has_twinkle` under the modern components format, starting in 1.20.5.
No. Without a fade color set, the burst fades out in its original color; the `fade_colors` list only appears in the command once you pick at least one transition color.
/give @p firework_rocket[minecraft:fireworks={flight_duration:2,explosions:[{shape:"large_ball",colors:[I;11546150,16701501],has_trail:true,has_twinkle:true}]}] 1The command is generated locally in the browser; nothing is sent to servers.