Handmade-Guns Overdrive

HMG-Overdrive — Beta Changelog

This beta is a major expansion of HMG-Overdrive focused on modern content-pack authoring, native Blockbench support, server usability, and several gameplay improvements. Existing OBJ/MQO content remains supported alongside the new systems.

New Features

• Native Blockbench model and animation support

  • HMG guns can now load .bbmodel projects directly without exporting the weapon to OBJ/MQO.
  • Supports Blockbench bones, cubes, pivots, textures, UVs, hierarchy, and embedded animations.
  • Supports position, rotation and scale animation channels with step, linear, Catmull-Rom and Bezier interpolation.
  • Existing Blockbench/TaCZ-style animations can provide idle, fire, reload, inspect and other named clips.
  • Added support for TaCZ-style positioning nodes such as idle_view, iron_view, thirdperson_hand, and first-person hand locators.
  • Imported guns use their authored first-person and ADS positioning instead of requiring legacy HMG positioning values.

• New gun animation system

  • Added named animation clips with BASE, ACTION and ADDITIVE layers.
  • Supports animation priorities, interruption, looping, reverse playback, hold behavior and smooth crossfades.
  • Animation playback is isolated per weapon/player/render context, including attachment previews and nested guns.
  • Added an optional Inspect action for weapons with inspect animations.
  • Fire, reload and cock actions can automatically drive imported animations while gameplay remains server-authoritative.

• Fully animated Blockbench reloads

  • Reloading now explicitly starts the appropriate imported reload_tactical or reload_empty animation.
  • Reload animations are authorized by the server but presented immediately on the owning client.
  • Imported reloads retain control of the weapon pose for the complete animation instead of being replaced by HMG's legacy reload pose.
  • Reload animations now play to their natural completion instead of being cut short by delayed reload-state synchronization.
  • Legacy guns continue using the original reload system.

• Clean content-pack asset structure

  • HMG packs can now use organized models/, textures/models/, textures/items/, textures/misc/, animations/, sounds/, and attachments/ directories.
  • Added concise references such as Model,akm.mqo, Texture,akm.png, BlockbenchModel,cod4_ak.bbmodel, and Animations,akm.json.
  • Existing legacy HMG layouts remain supported for third-party packs.
  • Repository HMG packs have been migrated to the new structure.

• Built-in dedicated-server vecmath dependency

  • HMG now ships its required vecmath 1.5.2 runtime itself.
  • Dedicated servers should no longer require users to manually install a separate vecmath jar.
  • Existing vecmath installations are detected and left untouched.
  • Compatibility with GVC, WW2 and Linker APIs using standard javax.vecmath types is preserved.

• Global infinite ammo

  • Added /hmg infiniteammo for server administrators.
  • Can be toggled or explicitly set with /hmg infiniteammo <true|false>.
  • Applies globally to players and persists through the world's gamerules.
  • Reloading supplies ammunition without consuming reserves while enabled, while normal chamber, bolt and weapon restrictions remain intact.

Gameplay Changes

• Improved headshot detection

  • HMG now classifies individual projectile impacts against the victim's actual bounds and head/eye region instead of relying on the previous generic ray/fallback behavior.
  • Existing headshot damage and sound behavior is retained.
  • Combatives poses can provide authoritative eye-height information when available.

• Reworked heavy-weapon jumping

  • Heavy equipment now prevents the jump before vanilla movement occurs rather than correcting the player afterward.
  • Removed downward correction teleports and post-jump vertical velocity clamps.
  • Flight and riding bypass the weight restriction.
  • Client/server mobility state is synchronized for more consistent jump prediction.

• Improved explosion cover

  • Blast protection now considers physical collision instead of primarily visual block properties.
  • Vegetation, webs and other non-solid/replaceable blocks no longer count as meaningful explosion cover.
  • Glass, fences, doors, slabs, stone and other physically substantial blocks can provide cover.

• Improved explosion damage falloff

  • Configured HMG explosions now use horizontal distance for damage falloff with a separate vertical limit.
  • Full damage remains within the configured radius, followed by linear falloff out to twice that radius.
  • Terrain exposure continues to modify final damage.

Compatibility & Content Authoring

Blockbench support is completely opt-in. Existing OBJ/MQO guns, legacy animation behavior, attachments and existing third-party HMG pack layouts remain supported. Imported models can also use embedded textures and animations, allowing a substantially more self-contained gun-authoring workflow.

The included Blockbench AKM example demonstrates a directly imported animated weapon, including tactical and empty reload variants, without requiring OBJ export or manual AddParts definitions.

Notable Fixes & Changes

• Fixed Blockbench textures being initialized too early during Forge startup.
• Corrected imported Blockbench model orientation, scale, pivots and animation coordinate conversion.
• Improved first- and third-person positioning for imported weapons.
• Improved animated hand placement using authored Blockbench/TaCZ hand locators.
• Fixed animation ownership surviving normal synchronized ItemStack replacement instead of restarting the equipped animation.
• Blockbench guns no longer inherit legacy HMG sprint positioning.
• Improved HMG/Flan's/Combatives aiming-pose compatibility.
• Added stricter pack ownership and path isolation so HMG only imports assets belonging to the intended HMG content pack.

Beta note: Native Blockbench support is intentionally being released as a beta while broader weapon/content-pack combinations are tested. Existing legacy weapon formats remain available as the compatibility path.