DontCrashTom (Fixes for Tom's Simple Storage Mod)

Don’t Crash Tom (NeoForge 1.21.1)
A micro patch for Tom’s Simple Storage that stops a rare but annoying crash from BlockCapabilityCache when chunks unload, dimensions change (portals), or capability caches are invalidated.

What it fixes

• Tom’s Simple Storage PlatformInventoryAccess.BlockInventoryAccess calls itemCache.getCapability() even after the cache is invalid.
• When the cache is dead, NeoForge throws an IllegalStateException, crashing or kicking the server/client.
• This mod intercepts tracker() and exists() and bails out if the cache is null/invalid instead of touching the dead cache.

Scope

• Stability-only. No gameplay, balance, loot, GUIs, or configs.
• Safe to add to existing worlds; remove anytime once upstream includes the fix.
• Tiny footprint: just a mixin that guards the capability lookup.

Requirements

• Loader: NeoForge 21.1.x
• Game: Minecraft 1.21.1
• Target mod: Tom’s Simple Storage (tested with 1.21-2.2.3). Other minor versions likely fine as long as the same BlockInventoryAccess class/methods exist.

Compatibility

• No worldgen, no items/blocks, no mixins beyond Tom’s Simple Storage PlatformInventoryAccess.BlockInventoryAccess.
• Should coexist with other storage/network mods and general optimization mods.

How to tell it worked

• The specific BlockCapabilityCache crash on chunk unload/portal travel no longer occurs.
• Log line on load: “DontCrashTom loaded - Tom’s Storage BlockCapabilityCache fix active”.
• Occasional debug log when it prevents an invalid cache access (can be ignored).

Why you’d want this

• Prevents unexpected crashes on busy servers where chunks unload/reload frequently or players portal around.
• Zero configuration, zero gameplay impact; pure stability patch.

License / Credit

• License: All Rights Reserved (matches upstream policy of the source assets).
• Author: Navrelis