BL2 Krieg in Binding of Isaac

Concepts

BUZZAXE

Active item

• Timed recharge: 120s
• Cannot charge with room clears

Active effect: Buzzaxe Rampage

• Duration: 15s
• Melee weapon (throwable, see Buzzaxe Bombardier below)
• x4 damage multiplier
• 40% move speed bonus

Taste of Blood

• During Buzzaxe Rampage, gain The Wafer's effect.

Buzzaxe Bombardier

• Thrown Buzzaxe explode on impact.
• Holding the shoot key after a melee attack will start throwing axes Ipecac-style.

Release the Beast

• Triggers when activating Buzzaxe Rampage while at 1 red heart or less
• Fill up all your red heart containers
• Add +1 to your damage multiplier
• When Buzzaxe Rampage wears out, Buzzaxe is fully charged.

KRIEG

Starts with Buzzaxe as pocket active item.

Bloodlust

• Killing enemies gives Bloodlust stacks.
• Stacks cap at 100.
• Stacks decay over time.
  • Idea: Make decay timer get bigger the further down you are in floors ? ⋙ Boiling Blood

Taste of Blood

• During Buzzaxe Rampage, get 30 Bloodlust stacks per kill.

Fuel the Blood

• Getting a melee kill increases explosive damage by +(tear damage)*0.2 per Bloodlust stack.

Blood Trance

• Each Bloodlust stack extends Buzzaxe Rampage duration by 0.25s upon activation.

Bloodsplosion (my beloved)

• Overkilling and enemy triggers an explosion after a delay.
• Damage is based on overkill and is boosted by Bloodlust stacks
• The explosion cannot damage Krieg.

Overkill damage is any damage dealt beyond the killed enemy's HP pool. If an enemy has 10HP but you deal 20 damage, then it's a 10 damage overkill.

Fuel the Rampage

• You take full heart damage from all sources.
• Taking damage charges active items based on how much health is lost.
• You can take damage from allies, co-op players/babies, familiars, etc.
• Red heart damage doesn't affect deal chance.

Empty the Rage

• If you only have red hearts, get +50% melee damage.

Embrace the Pain

• If you only have red hearts, get +30% tear rate

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TODOS

Krieg/Buzzaxe

• Charge method
  • Time
  • Prevent room clear charge
• Bloodlust
  • HUD display
  • Stacking
  • Over time decay
  • Most likely make it a Krieg thing rather than Buzzaxe
• Buzzaxe Rampage
  • Effect duration
  • Replace tears with melee
  • Damage multiplier
  • Speed multiplier
  • Release the Beast
    • Handle Rotten Hearts
    • Full heal
    • Item recharge
    • Damage multiplier
• Taste of Blood
  • Wafer effect
  • Bloodlust stacks
• Fuel the Blood
  • Explosive damage boost
• Blood Trance
  • Rampage duration extension
• Add Hellborn skills
• Sprites/animations
  • Buzzaxe
    • Weapon sprite
    • Release the Beast transformation
  • Krieg

Melee Weapon API

• Lock API metatables Note: For convenience and dev flexibility, this should be done at the end
• Find a way to make modules peristent through includes
  • Prevent registering the same callbacks again on luamod
  • Make callback module force-reloadable
• Make EntityWeapon a subclass of EntityEffect
• EntityMelee
  • Docs
    • Generate webview docs from comments
    • Doc-comment everything
    • Mention parent ModCallback that runs EntityMelee property callbacks (useful for things like tick rate etc)
  • Sprite rotation
    • :Rotate() — I still don't know if rotating the effect with the sprite is necessary
    • :SmootRotate()
    • User friendly interpolation formula integration — with default(s)
      • Bézier generator ?
  • Swing
    • Animate
    • Swing target discriminator
    • Callbacks
      • OnSwingStart
      • OnSwingHit
      • OnSwingEnd
  • Charge
    • Chargebar
    • Callbacks
      • GetChargebarPosition
      • OnChargeStart
      • OnChargeUpdate
      • OnChargeFull
      • OnChargeEnd
      • OnChargeRelease
  • Throw
    • Throw types
      • None
      • Detach
      • Boomerang
      • Custom ?
    • OnThrowStart
    • OnThrowHit
    • OnThrowEnd
  • Player input
    • IsPlayerAiming
    • IsPlayerMoving
    • Callbacks
      • OnPlayerMoveStart
      • OnPlayerMoveUpdate
      • OnPlayerMoveEnd
      • OnPlayerAimStart
      • OnPlayerAimUpdate
      • OnPlayerAimEnd

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License

This work by Ludovic F. (aka Sir Wrexes) is licensed under CC BY-NC-SA 4.0