Sable: Destructive

First public release of Sable: Destructive — a NeoForge 1.21.1 add-on for Sable that finally lets physics blocks break.

Core mechanics

• Universal collision callback wired into every Sable physics block.
• Real kinetic-energy model (mass × v²) decides the outcome of every impact.
• Two destruction modes:
  • DETACH (~90%) — affected blocks break off as a smaller independent physics sub-level and keep flying.
  • VANISH (~10%) — blocks pulverize into particles + sound when energy exceeds the material's pulverize threshold.
• Outcome is biased by physics: energy ratio, brittleness, and a safety speed ceiling — chances only set the baseline tendency.
• Cluster detach: blocks can break off in chunks, not strictly one at a time.

Block data

• Full mass + toughness table for all 1.21.1 vanilla blocks.
• Modded blocks default to a fragile clay-tier (clamped to 80–1500 kg, ≤6 m/s break speed) so unknown blocks never become indestructible bricks.
• F3 + H tooltip shows "Mass: X kg" and "Impact strength: Y m/s".

Explosions and terrain

• TNT, creepers, end crystals and other vanilla explosions now damage Sable sub-levels through the same path.
• World terrain is also affected, but only via VANISH (never DETACH), so the world never turns into a runaway physics sim.
• Bedrock, barriers, unbreakable blocks and block entities are skipped on the terrain path.
• Toggle terrain damage with the affectOnlySubLevelBlocks config flag.

Visual + audio (fancy VANISH effect)

• 3-layer particles: block-dust with the actual block texture, POOF, and CRIT chips.
• Block break sound + soft "whump".
• Per-tick budgets: 600 particles, 32 effects.
• Spatial + temporal dedup so big simultaneous breaks don't audio-clip.
• Auto-scaling under backpressure; falls back to vanilla levelEvent(2001) if overloaded.
• Toggle with effects and fancyVanishEffect config flags.

Stability and crash safety

• Lock-free offer queue with atomic size counter and epoch-XOR dedup ring (8192 entries).
• Per-tick offer cap (1024) to keep the hot path bounded.
• DETACH is always deferred to a safe inter-tick window — never executed while Sable's physics system is mid-step (this was the historic native-crash trigger).
• Snapshot + rollback, global crash guard, shutdown hook, emergency disable.
• NaN / Inf sanitisation on all impact data and kick velocities.
• Cluster BFS strictly stays within one parent sub-level — no cross-boundary clusters.
• Lifecycle reset on server start / stop / level unload.

Runtime control (op level 2)

• /sable-dv on | off | toggle | status
• /sable-dv config list
• /sable-dv config get
• /sable-dv config set
• /sable-dv config reset
• All tunables are reflected automatically with type coercion and tab-suggest.

Defaults

• enabled = true
• chanceDetach = 0.90, chanceVanish = 0.10, physicsBiasStrength = 0.6
• pulverizeEnergyRatio = 6.0, cleanDetachEnergyRatio = 1.5
• minBreakSpeed = 6.0, absoluteMaxSpeed = 350, detachSafeSpeedCeiling = 100
• maxDetachesPerSecond = 8, maxActiveDetachedSubLevels = 48, detachCooldownMs = 25
• affectOnlySubLevelBlocks = false
• effects = true, fancyVanishEffect = true

Requirements

• Minecraft 1.21.1
• NeoForge 21.1.227+
• Sable 1.1.3+

Credits

• Code: Xylos_Official
• Visuals: Viaquelt
• Built on top of Sable by ryanhcode