
Trajectory Estimation
This mod adds client-side rendered trajectory for some items in game.
Screenshots






About this Mod
Describe:
This MOD adds a client-side rendering trajectory for shooting projectiles in the game, supporting the vanilla items trajectory rendering for bow, crossbow, snowball, egg, experience bottle, enderpearl, potion bottle, and trident. In addition, some MOD items support is also provided, refer to the details below.
Also added the sound reminder. If there is an entity on the trajectory during aiming, a "ding" sound will be emitted as a reminder to inform the player that an entity may be hit.
MOD has a config GUI for every supported item, enable/disable for rendering trajectory and sound reminder. Global settings can change the size and color of the rendered trajectory cube/line.
In ver 1.0.3:
- Fixed some bugs
- Add the support for neoforge, fabric
- Add support for some mods
- In Fabric version, to modify the configuration using the config GUI, you need to install Mod Menu . If you don't use ModMenu, you can manually modify the config json by finding it in ".minecraft/config/trajectory_estimation.json".
Details:
- Support detection of primary and secondary hands, using quads rendering (non particle or entity).
- The sound reminders for some items may not be effective or accurate.
- Due to the random trajectory deviation during the shooting of projectiles, the actual trajectory may differ from the predicted trajectory. And the projectiles with tracking can only predict their launch direction (such as the Seeker Bow in The Twilight Forest).
- It may not work in some mods that have modified the camera view and modified the shooting method of projectiles.
MOD Support:
Mod items supported in listed versions:
(This depends on whether these MODs support the corresponding minecraft version)
Ice and Fire:
- Tide Trident
- Lich Staff
- Dragon Bow
Blue Skies:
- Venom Sac
- All spears
The Twilight Forest:
- Ice Bow
- Triple Bow
- Ender Bow
- Seeker Bow
- Twilight Wand
- Ice Bomb
L_Ender 's Cataclysm:
- Void Assault Shoulder
- Wither Assault Shoulder
- Coral Spear
- Coral Bardiche
- Laser Gatling
Immersive Engineering:
- Railguna
- Revolver
- Chemthrower
MrCrayfish's Gun:
- All guns
- Grenade
- Stun Grenade
AlexCave's Caves:
- Limestone Spear
- Extinction Spear
- Dreadbow
- Sea Staff
The Bumblezone:
- Stinger Spear
- Crystal Cannon
- Pollen Puff
- Dirt Pellet
The Aether:
- Phoenix Bow
- Hammer Of Kingbdogz
- Lightning Knife
- Dart Shooter
Creatures And Beasts:
- Spear
Alex's Mobs:
- Pocket Sand
- Hemolymph Blaster
- Blood Sprayer
- Stink Ray
- Vine Lasso
Vampirism:
- Single Crossbow
- Double Crossbow
- Tech Crossbow
- Holy Water Splash Bottle
L2Weaponry:
- Javelin
L2Archery:
- Generic Bow
Advent Of Ascension 3:
- Bow
- Crossbow
- Staff
- Gun
- Blaster
- Sniper
- Shotgun
- Cannon
- Thrown Weapon
Arch Bow: (in 1.18, Arch Bows version above 1.0.8-1.18.2)
- Flat Bow
- Long Bow
- Recurve Bow
- Short Bow
- Arbalest
- Heavy Crossbow
- Pistol Crossbow
Archers' Arsenal:
- All Bows
More Bows: Restrung!:
- All Bows
Mekanism:
- Electric Bow
Tetra:
- Modular Bow
- Modular Crossbow
Silent Gear:
- Gear Slingshot
- Gear Bow
- Gear Crossbow
Available Versions
How to Install Trajectory Estimation on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Trajectory Estimation". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.21, 1.20.4 (+5 more)
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Trajectory Estimation server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Trajectory Estimation compatible with fabric and forge and neoforge?
Trajectory Estimation officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.21, 1.20.4. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Trajectory Estimation – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Trajectory Estimation consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Trajectory Estimation with just one click on your server.