Destroy (1.21.1 NeoForge)

Unofficial community port of Petrolpark/Destroy from Forge 1.20.1 to NeoForge 1.21.1.

Authorised non-official port. Original mod by Petrolpark.

Requirements

	Version
Minecraft	1.21.1
Loader	NeoForge 21.1.200+ (21.1.219+ recommended at runtime)
Java	21

Dependencies

Required

• Create — 6.0.10
• petrolpark library — 1.4.31+ (1.4.32+ recommended at runtime)
• Ponder — bundled via Create
• Catnip — bundled via Create
• Registrate — MC1.21-1.3.0+67
• Flywheel — 1.0.5

Optional

• JEI 19.25.0.321+ — recipe browser integration. Now optional in this port: the JEI plugin is gated by Mods.JEI.isLoading() and the mod runs without it.
• Curios — gas mask / lab coat slot bindings.
• Create: Big Cannons — custom_explosive_mix and friends usable as cannon shells with propellant-blob effects.
• Create: Connected — FluidVessel integration with Destroy's mixture-aware fluid network.
• Farmer's Delight — tag compatibility (c:foods/raw_porkchop etc.).

What's different from 1.20.1 upstream

This is a port; gameplay behaviour is preserved 1:1 wherever the underlying API permits. The list below groups the visible deltas into three categories — behaviour adjustments, fixed bugs, and net-new features.

Behaviour changes

Tweaks to existing mechanics. Most are user-visible.

• Vat inventory: 1 → 9 slots. Multi-catalyst reactions (e.g. zinc + copper + … paths) now work; the upstream SmartInventory(9, this) was stubbed to one slot during early port and is now restored.
• Concentration tooltip precision: 1 → 3 decimal digits. Mixture displays show 0.300 M instead of 0.3 M; the M / mM / μM unit-prefix cutoff shifts to 10⁻³ so values stop flickering near the boundary. Temperature line still 1 digit.
• Chemical-poison damage no longer knocks back. alcohol, baby_blue_overdose, chemical_burn, chemical_poison, headache joined the vanilla no_knockback damage tag, matching vanilla's magic-damage convention.
• JEI U/R reverse lookup deduplicates matches and is subclass-aware. Electrolysis / Mixing / Arc Furnace recipes (BasinRecipe subclasses) now show up under molecule reverse-lookups; reaction hits are deduplicated; the reverse-lookup plugin only supplements JEI's static index for cross-side matches so the same reaction doesn't show twice.
• JEI datapack-reaction registration deduplicated. Datapack reactions no longer appear twice after a /jei reload or resource-pack switch.
• Distillation output temperatures quantised to 0.1 K. Floating-point drift no longer prevents cross-mod tanks from stacking the resulting Mixture FluidStacks.
• Blowpipe extracts fluid on left-click. Matches Test Tube / Beaker / Cylinder UX; upstream supported right-click drain only.
• Measuring Cylinder max stack size: 64 → 1. Aligns with the other glass containers; upstream was already stacksTo(1), the port silently dropped it.
• Circuit Mask max stack size: 64 → 1. Each mask carries its own punched 4×4 pattern plus up-to-three puncher-contamination UUIDs; upstream was stacksTo(1), the port silently dropped it.
• Vat side block: Flask + vanilla water → MixtureConversionRecipe triggers from the side as well as from a pump. Both paths now respect the conversion recipe.
• Pollutometer is a valid Display Link source. Selectable pollution-type readout (percentage or progress-bar style).
• Colourimeter generalised. Works against any tank Block Entity exposing a fluid handler + glass window, not only Vat side blocks.
• JEI is now optional. The mod runs without JEI; the plugin is gated by Mods.JEI.isLoading() and lazy-loads only when JEI is present.
• First-join fork-welcome chat message with clickable links to the upstream Discord and this fork's GitHub. Toggleable via the ForkWelcomeMessage client config.
• Fired cannon shell explosion radius ×1.6. A custom_explosive_mix_shell launched from a cannon detonates larger than the same mix hand-placed; the charge's sympathetic detonation and the hand-held bomb keep the base radius. Tunable via SHELL_EXPLOSION_RADIUS_MULTIPLIER.
• Empty Vat reads the local ambient temperature (biome + pollution) instead of a fixed 298 K, matching the rest of the chemistry temperature model.
• Mixed-explosive explosion effects broadcast to a wide radius. Particles + sound were only sent within 64 blocks, so a cannon shell that detonated far downrange showed nothing; the blast is now visible to anyone who can see that far (e.g. with extended render distance).

Bug fixes

Inherited from upstream 1.20.1

• Centrifuge ion-pair charge balance — counterion-moles formula had numerator and denominator swapped; 1:1 salts hid it, 3-charge species (Fe³⁺ / Cl⁻ in 1:3) exposed the 3:1 inversion.
• Centrifuge gas/liquid phase sort — trace gas-phase species were ranked as "densest" by a sort key that mixed mixture-wide concentration with phase-specific volume; the gas pair now ranks by post-separation gas density and lands in the light tank.
• Round-Bottomed Flask / Beaker / Test Tube pour-out lost fluid — tryEmpty drained the source first, then filled the destination; if the destination couldn't accept the full amount, the surplus disappeared. Now sim-then-execute: only the amount that fits is drained.
• CBC custom_explosive_mix_shell fuze install — overriding getFuze() → getItem(0) silently lost the fuze on install/drop/render; CBC stores fuzes in a data component, not a numbered slot. Override removed.
• Vat gas extraction minted moles through non-Create fluid transport — drainGasTankWithMolarDensity pulled amount × concentration ÷ molarDensity mB from the tank, the inverse of the correct volume, so gas thinner than air handed out more moles than it removed. Extracting through a pipe and pumping it back duplicated gas. Now removes the matching volume and re-expresses exactly the moles removed.
• JEI item-side reverse-reaction lookup no-op — missing return in an anyMatch lambda made the reverse lookup never match.
• JEI reaction recipe ClassCastException — ReactionRecipe was unchecked-cast straight to RecipeHolder<R>; now wrapped properly.
• Achievement chain stalled after dichromate stub — advancement listeners were stubbed; rewired so the late-game advancement chain unlocks again.
• Molecule-tag search in JEI (#carcinogen etc.) — MoleculeJEIIngredient missed the getTagStream override; restored along with the deprecated getTooltip overload so JEI's text index picks up tag rows.
• Hazmat Helmet config crash at reload — getMaxDamage() resolved config before it was loaded; falls back via safeInt now.
• Pumpjack output emitted flowing fluid instead of source — Registrate .getSource() fix.
• Mixed-explosive primed entity rendered as white square (asymmetric SuperByteBuffer.center() between base and label).
• Mixed-explosive blockstate typo (cullface: "dpwn").
• cordite_rods missing from creative tab — registry-id drift from cordite.
• urine_cauldron mined into minecraft:air instead of dropping a cauldron — loot entry fix.
• Centrifuge crash separating some ionic mixtures — the counter-ion pairing loop reused a moles value read once at loop entry; a species pairing with several counter-ions was over-counted past depletion, dropping its moles entry while volume remained and crashing the centrifuge tick on the next pass. Now re-reads the remaining moles each pass and skips depleted entries.
• CBC custom_explosive_mix_charge produced zero propellant strength — the strength lookup built its inventory without the charge's CAN_EXPLODE condition, so fulfils(CAN_EXPLODE) short-circuited at its condition check and the charge could never launch a shell (the same size-only inventory exists in 1.20.1).

Surfaced by 1.21's stricter APIs (or introduced during the port and caught in series)

• /reload crash in worlds without a Vat — BlockIngredient types registered eagerly in FMLCommonSetupEvent.
• Dedicated-server class-load crashes — seven+ blocks/items hard-referenced ClientLevel / Screen classes through the new RuntimeDistCleaner contract; refs moved into nested @OnlyIn(Dist.CLIENT) handlers.
• Player kicked when urinating into a cauldron — server tick was touching Create's FluidFX (which references ClientLevel).
• Ponder StitchedSprite.ALL concurrent-init crash — multiple Create-addon mods raced on the same HashMap during <clinit>; mixin promotes it to a ConcurrentHashMap. Saves the entire Create ecosystem in addon-heavy packs.
• PollutionNumberProvider chunk-branch NPE — Alex's Mobs ShoebillAIFish hand-builds a LootParams without ORIGIN; pollution helper now tolerates the missing param.
• LegacyMixture.readNBT unknown-molecule NPE — datapack reload order could place molecule registration after RecipeManager.apply; unknown molecule entries are WARN-skipped instead of aborting the reload.
• FogHandler config-not-loaded crash on title screen — isPollutionEnabled() defensively returns false until server config is available.
• JEI tooltip drift on molecule hover — Catnip AbstractSimiWidget missed afterRender; PoseStack push/pop balanced.
• JEI first-open freeze — Pump now reads recipes via RecipesUpdatedEvent instead of a constructor-time call.
• JEI molecule input/output map duplicate accumulation across reloads — JeiProcessingRecipeMixin static map cleared via RecipesUpdatedEvent.
• Crying tear particles invisible in multiplayer — TearParticle.Data lacked equals / hashCode, so vanilla StreamCodec.unit silently dropped packets; particles now broadcast via ServerLevel.sendParticles.
• 13 petrolpark:config_boolean data files migrated to the renamed petrolpark:config_bool codec — alcohol-disabled mode actually blocks moonshine now.
• 9 broken recipes — id drift / FD tag renames / Distillation fireworks reshuffling.
• Six ore loot tables migrated to the 1.21 match_tool.predicates.minecraft:enchantments schema (silk touch was dropping the block itself).
• Distillation output temperatures drifting ~10⁻⁴ K per tick — quantised so cross-mod tanks can stack the Mixture FluidStacks.
• ItemMixtureTank.fill did not merge mixtures on Flask / Cylinder / Test Tube fill paths.
• Vat cooling lockup after a v0.3.0 whenFluidUpdates callback regression — reverted and replaced with explicit refresh points so heat exchange stays unlocked even after long extraction sessions.
• Sub-mB liquid condensate ghost-leak — VatFluidTankBehaviour rounded sub-0.5 mB liquid output to 0 mB and the moles vanished; now folded back into the gas combine so the next tick can accumulate.
• Creative Pump network refresh chain — notifyMultiUpdated propagation, onSpeedChanged → updatePressureChange, and stale FluidNetwork.targets all rewired.
• Tree Tap × Sable mixin clash — Sable's @Redirect on getBreakingPos() bypassed TreeTap's subclass override; parent class changed to plain KineticBlockEntity and the breaking loop inlined. Also fixes Tree Tap permanently stuck after a stop+resume stress cycle.
• Centrifuge two-output behaviour type collision — denseOutputTank and lightOutputTank shared BehaviourType.OUTPUT and overwrote each other's NBT; dense gets its own type, old worlds remain compatible.
• BubbleCap render perf — VoxelShape rebuild thrash and per-frame fluid → fluid-type → light-level lookup eliminated via precomputed shape table and whenFluidUpdates-driven luminosity cache.
• Cooler captured by Mechanical Bearing leaked liquid air ex nihilo — virtual-state propagation tightened.
• Blowpipe first-person glass orientation.
• CBC custom shell / charge lost their payload when hand-loaded — CBC 1.21 serialises the munition item's DataComponents into the bore structure tag, but the Destroy block entity persists a raw NBT save tag; a hand-loaded shell arrived with no explosive mix (and never detonated) and the charge read as zero propellant (the cannon wouldn't fire). getHandloadingInfo / getExtractedItem now round-trip through the block entity's own serialization.
• CBC custom shell creative middle-click returned an empty shell — FuzedBlockEntity syncs to clients through writeClient / readClient, not saveAdditional, so the client-side inventory was empty when pick-block read it. Sync overrides added.
• Trypolithography circuit board always came out blank — Create's SequencedAssemblyRecipe.advance() reset the work item to the transitional template between steps, stripping the punched pattern; a mixin conserves the components mid-sequence and re-stamps the circuit pattern.
• Vat temperature snapped to ambient (25 °C) on every fluid insert/extract — the tank write-back was gated to ticks where a reaction or phase change occurred (to stop an infinite-extraction exploit), which also stopped pure heating from persisting to the tanks, so accumulated heat was discarded on the next fluid-I/O rebuild. Heating ticks now write the temperature back to the tank stacks without regenerating their volume.
• CBC custom shell launched by a nearby explosion didn't detonate — CBC 5.11.7's explosion/physicalize path spawns the projectile through a different getProjectile overload than cannon firing, and the un-overridden default carried no explosive mix, so the launched shell fizzled. The overload now transfers the mix, fuze and colour from the block entity.
• In-flight custom shell could fizzle after a chunk save/reload — the reloaded projectile inventory was rebuilt without its CAN_EXPLODE condition.
• CBC custom charge dropped itself and awarded the detonation advancement on a chain detonation — canDropFromExplosion now returns false for the charge, and a sympathetic detonation uses a null explosion source so it is not credited to a player.

New features (additions vs upstream 1.20.1)

• EMI plugin — native Reaction / Generic Reaction categories with the same molecule rendering JEI users have, molecule search index, structure-rendering tooltips. Generic reactions get unique recipe ids from GenericReaction.id so EMI doesn't dedup them all to a single tile. Register call fully try/catch-guarded.
• Data-driven chemistry — datapacks can now register custom chemistry:
  • Elements — data/<ns>/destroy/elements/<id>.json adds symbol / mass / electronegativity / valencies (optional VSEPR override).
  • Molecules — data/<ns>/destroy/molecules/<id>.json defines FROWNS structure + physical properties + tags.
  • Reactions — data/<ns>/destroy/reactions/<id>.json defines reactants / products / catalysts / item reactants / kinetics / requires-UV / result.
  • Custom 3D atom textures via resource pack assets/<ns>/models/chemistry/atom/<id>.json.
  • S2C sync to clients on reload + per-player resync on join via OnDatapackSyncEvent.
  • Load order is fixed elements → molecules → reactions, so cross-datapack references resolve cleanly.
  • Tutorial packs at datapack_en/ and datapack_zh/ cover all three layers + a matching resource pack.
• Reversible reactions in the datapack — ReactionDefinition.reverse field accepts an optional kinetics block + optional result; auto-derives Hess-Law-consistent activation energy / enthalpy when omitted.
• JEI molecule drill-down — "which recipes consume molecule X" / "which recipes produce a Mixture containing X" via MixtureFluidIngredient.getReferencedMolecules.
• Display Link → Pollutometer.
• Generalised Colourimeter — see Behaviour changes above.
• Create: Big Cannons compat — custom_explosive_mix and friends register as CBC munitions with custom propellant-blob effects.
• Create: Connected compat — FluidVessel*Mixin makes Connected's fluid vessels mixture-aware so they cooperate with Destroy's pipe network for in-place mixture merging.
• Smog atmospheric tinting — FogHandler + SmogAffectedBlockColor re-port from upstream; grass / leaves / water / sugarcane / pink petals visibly darken as the chunk's smog level rises.
• Five missing achievements wired — Shoot Hefty Beetroot, Cut Onions, Fireproof Flint and Steel, Haber Process, Steam Reformation. The use_keypunch trigger id is also corrected to keypunch.
• vat_interaction Ponder scene fully ported — including en_us / zh_cn translations (upstream shipped only en_gb / pl_pl).
• NeoForge tag namespace migration — 21 datapack tag files moved from forge: to neoforge:.
• Spout filling non-fluid-handler items path restored (Fire Retardant spray fires correctly).
• CircuitPatternIngredient ingredient type eagerly registered so Colourimeter / Pollutometer / Redstone Programmer recipes load reliably.
• CBC custom shell fuze rendering — an installed fuze now renders on the placed shell (Flywheel visual) and on the item model in the inventory / in hand, matching CBC's own shells; breaking a fuzed shell drops a single shell that keeps the fuze.
• CBC custom shell / charge sympathetic detonation — a custom_explosive_mix_charge or custom_explosive_mix_shell caught in a nearby explosion detonates its own mix (chain reaction) instead of dropping; integrates with CBC 5.11.7's physicalize-on-explosion path so a shell with an impact fuze detonates where it lands.
• Create: Big Cannons compat updated to 5.11.7 — tracks the new FuzedBlockEntity save API and explosion-launched fuzed projectiles.

Building

./gradlew jar

Produces build/libs/destroy-1.21.1-0.3.9.jar (about 9 MB).

Build requires a local _Migration-Toolkit-1.21/ directory as a sibling of the project root, containing the petrolpark library Maven layout and the compat-only jars referenced by build.gradle. End users who just want to run the mod can install the jar directly into a NeoForge instance and do not need the toolkit.

Modpack usage

You are welcome to include this fork in modpacks. Two requirements:

1. Credit the fork in the modpack description. Include a link to this repository — https://github.com/NHblock714/Destroy/tree/1.21.1-neo — alongside the credit for the upstream Petrolpark mod. The wording is up to you; the intent is that anyone installing the pack can find this port if they hit a port-specific bug.
2. Do not redistribute the jar as if it were the original 1.20.1 Destroy. This is an unofficial port; bugs introduced by the port should not be reported to Petrolpark.

Beyond that there are no extra rules — no payment, no permission request, no name-change required. Just keep the link visible so testers know where to file issues.

Acknowledgements

• Petrolpark — original mod author. This port is unofficial but authorised via Discord.
• petrolpark library — the upstream library that this port depends on for Registrate extensions, ponder helpers, ingredient infrastructure and more.
• The Create team — for Create itself and the conventions this mod builds on.
• Catnip & Ponder — for the rendering helpers and in-game scene system that Destroy uses for its guides.
• Maintainers of Sable, Create: Connected, Create: Big Cannons, Curios and Farmer's Delight — for the integration surfaces and for help reproducing edge cases during compat debugging.

License

All Rights Reserved (mirrors the upstream Destroy license).

"All Rights Reserved" does not mean modpacks are off-limits — upstream grants modpack permission explicitly. Quoting the Destroy Modrinth page, which is Petrolpark's authoritative statement on this:

Use In Modpacks:

Destroy can be used in any modpack as long as credit is given. Destroy is designed as a mid-game pathway to more advanced technology mods. It is recommended that, as the Plastics which Destroy introduces intentionally have limited applications within Destroy itself, that modpack creators change recipes for items from later-game mods to include Plastics. It is also recommended that the generation of ore blocks of rare minerals featured in Destroy (i.e. Platinum, Palladium, and Rhodium) are disabled or reduced in other mods, for balancing reasons.

That permission covers this fork too. See Modpack usage above for the one thing this port asks on top of it: a link back to this repository, so port-specific bugs reach me instead of Petrolpark.

---

Maintainer: NHblock714
Upstream: Petrolpark-Mods/Destroy