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# v1.3.7 This update introduces a **fully playable Snooker bot**, improves bot planning and shot selection, and adds more options for adjusting difficulty and physics accuracy. ## New Features - **Added a fully playable Snooker bot!** - The bot aims to maximize its score while considering the difficulty of future shots. - Defensive shot searches are triggered when attacking options are poor or when a snooker is needed to win. - **Added search depth 2 for bot players.** - The bot can now simulate potential follow-up shots to make better decisions about cue-ball positioning. - This requires additional computation but is now practical thanks to performance optimizations introduced in previous updates. - **Added adjustable shot-force accuracy for bot players.** - Random variation can be applied to the bot's shot force, allowing players to adjust its difficulty. - Higher accuracy makes the bot more consistent, while lower accuracy introduces more imperfections. - **Added an adjustable collision detection accuracy setting.** - Controls how many nearby balls the physics engine checks for potential collisions. - Higher settings reduce the risk of missed collisions, especially when balls are tightly packed together, as in Snooker, but slightly increase computational load. - Lower settings are generally sufficient for normal gameplay and offer better performance. ## Bot Improvements - **Improved shot evaluation** to favor more reasonable cue-ball positioning. - Added penalties for simulated shots involving excessive cue-ball collisions, as complex trajectories are less predictable. - Increased penalties for cue-ball collisions with pocket edges, where small inaccuracies can increase the risk of scratching. - Added gradual penalties for cue-ball positions near cushions, where subsequent shots may be more difficult. - These adjustments reduce the estimated value of risky follow-up opportunities without completely discouraging difficult or necessary shots, such as breaking up ball clusters. - Improved the bot's simulation and evaluation scheduler to reduce unexpected deadlocks and interruptions. ## Technical Improvements - **Added direct position updates using entity NBT as an alternative to teleportation-based ball movement.** - Simplifies movement calculations, improves positioning accuracy, and reduces the number of commands needed to update ball positions. - In testing, average motion load decreased by **44.8%**, making the new method approximately **1.8× faster**. - However, the original teleportation method truncates small displacements, leaving a slight separation between balls. The more precise NBT method reduces this separation, potentially increasing the likelihood of balls clipping through each other due to numerical errors. - This feature is **disabled by default**. To enable it, run `/function app:settings/pool/motion/use_nbt`. - For Minecraft 1.17+, Snooker now uses marker entities instead of area effect clouds where applicable. ## Other Changes - **Removed Simulate ASAP mode.** - Distributing simulations across multiple game ticks now provides a more practical way to manage computational load. - Maintaining a separate ASAP simulation path is no longer worthwhile, especially with the introduction of more advanced planning. - Removed the option to choose between 5 and 10 force/spin combinations per shot and the default is set to 10 combinations, simplifying bot configuration.