Perks (behavior reference)¶

This page documents the actual runtime behavior of each perk in:

• Original: Crimsonland v1.9.93 (analysis/ghidra/raw/crimsonland.exe_decompiled.c)
• Rewrite: our Python port (src/)

For ID ↔ name mapping, see Perk ID map. For a quick “where is this wired” view in the rewrite, see perk matrix.

Notes:

• Many perk effects are implemented by a small set of hot paths in the original: perk_apply (0x004055e0), perks_update_effects (0x00406b40), player_update (0x004136b0), player_fire_weapon (0x00444980), player_take_damage (0x00425e50), creature_update_all (0x00426220), creature_apply_damage (0x004207c0), projectile_update (0x00420b90), and rendering passes.
• In the rewrite, perk counts live on PlayerState.perk_counts and are typically treated as shared state across players (synced from player 0).

0 — AntiPerk (PerkId.ANTIPERK)¶

Effects¶

• Sentinel “no perk” entry; never offered to the player.

Original¶

• perk_can_offer (0x0042fb10): explicitly rejects perk_id_antiperk.

Rewrite¶

• src/crimson/gameplay.py: perk_can_offer() rejects PerkId.ANTIPERK.

1 — Bloody Mess / Quick Learner (PerkId.BLOODY_MESS_QUICK_LEARNER)¶

Effects¶

• +30% XP from creature kills (XP awarded at death).
• When blood/gore FX are enabled, projectile hits spawn extra gore decals / blood particles.
• The UI name/description toggles between “Bloody Mess” and “Quick Learner” based on the blood toggle.

Original¶

• Kill XP: creature death handling (via creature_update_all → creature_handle_death path).
• Hit FX: projectile hit handling queues extra decals / blood splatter when the perk is active and blood is enabled.

Rewrite¶

• XP multiplier on kill: src/crimson/creatures/runtime.py: CreaturePool._start_death().
• Extra hit decals/blood: src/crimson/game_world.py: GameWorld._queue_projectile_decals().
• Name/description toggle: src/crimson/perks.py: perk_display_name() / perk_display_description().

2 — Sharpshooter (PerkId.SHARPSHOOTER)¶

Effects¶

• Tighter spread: spread heat is forced to a low baseline (0.02).
• Slightly slower firing: shot cooldown is multiplied by 1.05.
• Draws a laser sight line while active.

Original¶

• player_update (0x004136b0): forces spread_heat = 0.02 while active.
• player_fire_weapon (0x00444980): applies shot_cooldown *= 1.05 and avoids the normal post-shot spread heat increase.
• Rendering: draws the laser overlay in the player render path.

Rewrite¶

• Shot cooldown and spread behavior: src/crimson/gameplay.py: player_fire_weapon(), player_update().
• Laser rendering: src/crimson/render/world_renderer.py: _draw_sharpshooter_laser_sight().

3 — Fastloader (PerkId.FASTLOADER)¶

Effects¶

• Reload time multiplier: reload duration is multiplied by 0.7.

Original¶

• player_start_reload (0x00413430): applies the multiplier when starting a reload.

Rewrite¶

• src/crimson/gameplay.py: player_start_reload().

4 — Lean Mean Exp. Machine (PerkId.LEAN_MEAN_EXP_MACHINE)¶

Effects¶

• Passive XP drip: every 0.25s, each player with the perk gains perk_count * 10 XP.

Original¶

• perks_update_effects (0x00406b40): timer-based periodic XP grant.

Rewrite¶

• src/crimson/gameplay.py: perks_update_effects() (Lean Mean timer step).

5 — Long Distance Runner (PerkId.LONG_DISTANCE_RUNNER)¶

Effects¶

• While moving, movement speed ramps normally up to 2.0, then continues ramping to 2.8.
• When not moving, speed decays quickly (dt * 15).

Original¶

• player_update (0x004136b0): move-speed ramp/decay logic with perk-enabled extension to 2.8.

Rewrite¶

• src/crimson/gameplay.py: player_update().

6 — Pyrokinetic (PerkId.PYROKINETIC)¶

Effects¶

• While aiming close to a creature (within a small radius), periodically triggers a heat/flare visual:
• every ~0.5s: spawns a small burst of particles with fixed intensities (0.8, 0.6, 0.4, 0.3, 0.2) and a random decal.

Original¶

• perks_update_effects (0x00406b40): selects an aim target via creature_find_in_radius(..., 12.0, 0) and runs the timer/FX emission.

Rewrite¶

• src/crimson/gameplay.py: perks_update_effects() (Pyrokinetic step).

7 — Instant Winner (PerkId.INSTANT_WINNER)¶

Effects¶

• Immediately grants +2500 XP to the picker.
• Stackable.

Original¶

• perk_apply (0x004055e0): adds 2500 XP.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Instant Winner handler).

8 — Grim Deal (PerkId.GRIM_DEAL)¶

Effects¶

• Immediately grants +18% of current XP (rounded down to int) to the picker.
• Immediately kills the picker (sets health negative).

Original¶

• perk_apply (0x004055e0): experience += int(experience * 0.18) then health = -1.0.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Grim Deal handler).

9 — Alternate Weapon (PerkId.ALTERNATE_WEAPON)¶

Effects¶

• Enables a second weapon slot (alternate weapon).
• Movement speed penalty: speed is multiplied by 0.8 while active.
• Reload input swaps primary and alternate weapon runtime state and adds +0.1 to shot cooldown (to prevent instant swap-firing).

Original¶

• player_apply_move_with_spawn_avoidance (0x0041e290): movement scaling.
• player_update (0x004136b0): reload-triggered swap behavior + shot cooldown bump.

Rewrite¶

• Swap and carry behavior: src/crimson/gameplay.py: player_swap_alt_weapon(), player_update(), bonus_apply().

10 — Plaguebearer (PerkId.PLAGUEBEARER)¶

Effects¶

• Enables the Plaguebearer system (treated as a global/shared flag in the original).
• While the infection counter is low enough:
• Players infect nearby weak creatures (HP < 150) within 30 units, up to an infection-count cap.
• Infected creatures take 15 damage every 0.5s.
• Infection spreads between nearby creatures (within 45 units) while the global infection count is below a cap.
• Each “infection kill” increments a global infection counter which gradually suppresses further spread/infection.

Original¶

• perk_apply (0x004055e0): sets player_plaguebearer_active (global-ish field on player0).
• creature_update_all (0x00426220): infection flagging, ticking, spread (plaguebearer_spread_infection), and infection kill bookkeeping.

Rewrite¶

• Flag application: src/crimson/gameplay.py: perk_apply() (Plaguebearer handler sets plaguebearer_active for all players).
• Creature-side behavior: src/crimson/creatures/runtime.py: CreaturePool.update() (contact infection, tick damage, spread).

11 — Evil Eyes (PerkId.EVIL_EYES)¶

Effects¶

• Picks a single creature near the aim point (within 12 units).
• That creature’s AI/movement is frozen while targeted.

Original¶

• perks_update_effects (0x00406b40): updates evil_eyes_target_creature via creature_find_in_radius.
• creature_update_all (0x00426220): skips AI update for the targeted creature.

Rewrite¶

• Target selection: src/crimson/gameplay.py: perks_update_effects() (Evil Eyes target step).
• Freeze behavior: src/crimson/creatures/runtime.py: CreaturePool.update() (evil-eyes target handling).

12 — Ammo Maniac (PerkId.AMMO_MANIAC)¶

Effects¶

• Increases clip size by +25%, rounded down, but at least +1: clip += max(1, int(clip * 0.25)).
• Applied on weapon assignment, so it persists across weapon swaps and reload refills.

Original¶

• perk_apply (0x004055e0): reassigns each player’s current weapon to force clip recalculation.
• weapon_assign_player (0x00452d40): applies the clip-size modifier.

Rewrite¶

• Clip sizing: src/crimson/gameplay.py: weapon_assign_player() (Ammo Maniac modifier).
• Apply-time reassignment: src/crimson/gameplay.py: perk_apply() (Ammo Maniac handler).

13 — Radioactive (PerkId.RADIOACTIVE)¶

Effects¶

• Creatures near the player are periodically damaged:
• within 100 units, decrements a timer faster; when it wraps, deals damage proportional to proximity: damage = (100 - dist) * 0.3 every 0.5s per creature.
• Has a visible green “aura” around the player.
• Kills from the aura award XP directly and start the death staging without a full damage event path.

Original¶

• creature_update_all (0x00426220): proximity check, timer wrap, falloff damage; special-case kill/XP handling.
• Rendering: draws the player aura (effect atlas id 0x10).

Rewrite¶

• Gameplay: src/crimson/creatures/runtime.py: CreaturePool.update() (Radioactive tick and kill handling).
• Rendering: src/crimson/render/world_renderer.py: player aura in _draw_player_trooper_sprite().

14 — Fastshot (PerkId.FASTSHOT)¶

Effects¶

• Faster firing: shot cooldown is multiplied by 0.88.

Original¶

• player_fire_weapon (0x00444980): applies the cooldown multiplier.

Rewrite¶

• src/crimson/gameplay.py: player_fire_weapon().

15 — Fatal Lottery (PerkId.FATAL_LOTTERY)¶

Effects¶

• 50/50 outcome:
• either immediately grants +10000 XP, or
• immediately kills the picker.
• Stackable.

Original¶

• perk_apply (0x004055e0): (crt_rand() & 1) decides XP vs death.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Fatal Lottery handler).

16 — Random Weapon (PerkId.RANDOM_WEAPON)¶

Effects¶

• Quest-only perk that immediately assigns a random available weapon:
• retries up to ~100 times,
• avoids the pistol and the currently equipped weapon.
• Stackable.

Original¶

• perk_apply (0x004055e0): random selection and weapon_assign_player.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Random Weapon handler).

17 — Mr. Melee (PerkId.MR_MELEE)¶

Effects¶

• When a creature lands a melee “contact damage” tick on the player:
• the player automatically counter-hits the attacker for 25 damage (damage type 2),
• and the player still takes the contact damage for that tick.

Original¶

• creature_update_all (0x00426220): on contact-damage tick, calls creature_apply_damage(attacker, 25, damage_type=2, impulse=(0,0)) when Mr. Melee is active, without suppressing the player damage path.

Rewrite¶

• src/crimson/creatures/runtime.py: _creature_interaction_contact_damage() (Mr. Melee branch + deferred death handling).

18 — Anxious Loader (PerkId.ANXIOUS_LOADER)¶

Effects¶

• While reloading (reload_timer > 0), each “fire” press reduces reload timer by 0.05 seconds.

Original¶

• player_update (0x004136b0): checks input_primary_just_pressed() and applies the timer reduction.

Rewrite¶

• src/crimson/gameplay.py: player_update().

19 — Final Revenge (PerkId.FINAL_REVENGE)¶

Effects¶

• When the player dies, triggers an explosion centered on the player:
• radius 512
• damage falloff: damage = (512 - dist) * 5.0
• Plays large explosion + shockwave SFX.
• Uses a “bonus spawn guard” style toggle during the effect in the original (to match stats/spawn semantics).

Original¶

• player_take_damage (0x00425e50): death check triggers the revenge burst and radial damage via creature_apply_damage (damage type 3).

Rewrite¶

• src/crimson/sim/world_state.py: death pipeline triggers the revenge burst and applies damage.

20 — Telekinetic (PerkId.TELEKINETIC)¶

Effects¶

• Allows remote pickup of bonuses:
• aim at a bonus within 24 units,
• maintain aim hover for >650ms,
• bonus is picked up automatically.

Original¶

• Bonus update logic uses a per-player aim-hover timer and a fixed delay threshold.

Rewrite¶

• src/crimson/gameplay.py: bonus_telekinetic_update(), bonus_find_aim_hover_entry().

21 — Perk Expert (PerkId.PERK_EXPERT)¶

Effects¶

• Perk selection offers 6 choices instead of 5.
• UI layout is adjusted for the extra entry and shows an “extra perk sponsored…” line.

Original¶

• Perk selection UI logic adjusts choice count and layout while the perk is active.

Rewrite¶

• Choice count: src/crimson/gameplay.py: perk_choice_count().
• UI layout + sponsor text: src/crimson/ui/perk_menu.py, src/crimson/views/perks.py.

22 — Unstoppable (PerkId.UNSTOPPABLE)¶

Effects¶

• On taking damage, suppresses the normal “hit disruption”:
• no random heading knock,
• no spread heat penalty.
• Damage still applies normally.

Original¶

• player_take_damage (0x00425e50): gates the disruption logic on perk presence.

Rewrite¶

• src/crimson/player_damage.py: player_take_damage().

23 — Regression Bullets (PerkId.REGRESSION_BULLETS)¶

Effects¶

• While reloading (reload_timer != 0), firing is allowed if the player has XP > 0:
• consumes XP based on weapon reload time and ammo class:
  • cost = reload_time * 4.0 when weapon_ammo_class == 1
  • cost = reload_time * 200.0 otherwise
• XP is clamped to be non-negative.
• the shot fires without consuming ammo.
• Reload cannot be “restarted” while already reloading when this perk (or Ammunition Within) is active (prevents reload-reset abuse).

Original¶

• player_fire_weapon (0x00444980): implements the “fire during reload by paying XP” path.
• player_start_reload (0x00413430): reload restart guard when Regression Bullets or Ammunition Within is active.

Rewrite¶

• src/crimson/gameplay.py: player_fire_weapon() (reload firing + XP drain), player_start_reload() (restart guard).

24 — Infernal Contract (PerkId.INFERNAL_CONTRACT)¶

Effects¶

• Immediately:
• sets every alive player to 0.1 health,
• grants the picker +3 levels and +3 pending perk picks.
• Not offered while Death Clock is active.

Original¶

• perk_apply (0x004055e0): applies the health reduction and perk/level grants.
• Perk offering logic blocks the perk under Death Clock.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Infernal Contract handler) and perk generation (perk_generate_choices()).

25 — Poison Bullets (PerkId.POISON_BULLETS)¶

Effects¶

• On projectile hit to a creature: ⅛ chance to poison ((rand & 7) == 1).
• Poisoned creatures take self-damage every frame:
• weak poison: dt * 60
• strong poison (when Toxic Avenger sets the strong bit): dt * 180
• Poison is applied via the “normal damage” path (hit flash / heading jitter side-effects occur).
• Poisoned creatures render a red aura (60×60, effect atlas 0x10) behind them with corpse-fade alpha.

Original¶

• projectile_update (0x00420b90): sets poison flags on hit.
• creature_update_all (0x00426220): applies self-damage using creature_apply_damage(..., damage_type=0, impulse=(0,0)).
• Rendering: creature overlay draws aura 0x10 when poison flag is set.

Rewrite¶

• Poison flagging: src/crimson/projectiles.py: ProjectilePool.update() hit logic.
• Poison tick: src/crimson/creatures/runtime.py: CreaturePool.update() routes self-damage through creature_apply_damage().
• Aura render: src/crimson/render/world_renderer.py: creature overlay in WorldRenderer.draw().

26 — Dodger (PerkId.DODGER)¶

Effects¶

• When taking damage, ⅕ chance to dodge completely (no damage).
• Ninja (if owned) overrides Dodger (checked first).

Original¶

• player_take_damage (0x00425e50): Dodger is crt_rand() % 5 == 0 if Ninja is not active.

Rewrite¶

• src/crimson/player_damage.py: player_take_damage().

27 — Bonus Magnet (PerkId.BONUS_MAGNET)¶

Effects¶

• Adds an extra chance for a bonus to spawn on kill when the base roll fails.
• Interacts with pistol special-case rules (pistol already has its own bonus-boost rules).

Original¶

• Bonus spawn-on-kill logic (bonus_try_spawn_on_kill): additional roll gates on perk.

Rewrite¶

• src/crimson/gameplay.py: BonusPool.try_spawn_on_kill().

28 — Uranium Filled Bullets (PerkId.URANIUM_FILLED_BULLETS)¶

Effects¶

• Bullet damage is doubled (×2.0) when the attacker has the perk.

Original¶

• creature_apply_damage (0x004207c0): when damage_type == 1, doubles damage.

Rewrite¶

• src/crimson/creatures/damage.py: creature_apply_damage().

29 — Doctor (PerkId.DOCTOR)¶

Effects¶

• Bullet damage bonus: ×1.2 when the attacker has the perk.
• Shows a target health bar for the creature near the aim point (same target selection as Pyrokinetic/Evil Eyes).
• Corpses that are still “active/targetable” render as 0%.

Original¶

• creature_apply_damage (0x004207c0): bullet damage scaling.
• Target selection: uses creature_find_in_radius(aim, 12.0, 0).
• HUD draw: draws a 64px bar with the clamped health/max_health ratio.

Rewrite¶

• Damage: src/crimson/creatures/damage.py: creature_apply_damage().
• UI: src/crimson/modes/base_gameplay_mode.py: _draw_target_health_bar(), and src/crimson/ui/hud.py: draw_target_health_bar().

30 — Monster Vision (PerkId.MONSTER_VISION)¶

Effects¶

• Not offered when FX detail is disabled (config gating).
• Renders a highlight behind each active creature:
• yellow 90×90 quad (effect atlas 0x10),
• fades during corpse despawn.
• Disables the creature shadow pass while active.

Original¶

• Offer gating: perk selection checks FX detail.
• Rendering: creature render pass draws 0x10 behind creatures; shadow pass is disabled while active.

Rewrite¶

• Offer gating: src/crimson/gameplay.py: perk_can_offer() / perk selection.
• Rendering: src/crimson/render/world_renderer.py: WorldRenderer.draw() (Monster Vision overlay and shadow gating).

31 — Hot Tempered (PerkId.HOT_TEMPERED)¶

Effects¶

• Periodically spawns an 8-shot ring centered on the player:
• even indices: Plasma Minigun projectile
• odd indices: Plasma Rifle projectile
• angles: idx * (pi/4)
• Interval is randomized to (rand % 8) + 2 seconds after each burst.
• Projectile owner id depends on friendly-fire setting:
• friendly fire off: owner_id = -100
• friendly fire on: owner_id = -1 - player_index

Original¶

• player_update (0x004136b0): timer logic + randomized interval + ring spawn.

Rewrite¶

• src/crimson/gameplay.py: _perk_update_hot_tempered() (called from player_update()).

32 — Bonus Economist (PerkId.BONUS_ECONOMIST)¶

Effects¶

• Timed bonuses last 50% longer (timer increments are multiplied by 1.5).

Original¶

• Bonus application scales duration increments while the perk is active.

Rewrite¶

• src/crimson/gameplay.py: bonus_apply() (economist multiplier).

33 — Thick Skinned (PerkId.THICK_SKINNED)¶

Effects¶

• On pick: reduces current health to ⅔ (clamped to at least 1.0).
• On damage taken: damage is multiplied by ⅔ (applied before dodge logic).
• Not offered while Death Clock is active.

Original¶

• perk_apply (0x004055e0): health scaling on pick.
• player_take_damage (0x00425e50): damage scaling.
• Perk offering blocks it under Death Clock.

Rewrite¶

• src/crimson/gameplay.py: perk_apply().
• src/crimson/player_damage.py: player_take_damage().
• Offer gating: src/crimson/gameplay.py: perk generation.

34 — Barrel Greaser (PerkId.BARREL_GREASER)¶

Effects¶

• Bullet damage multiplier: ×1.4.
• Player-owned projectiles step more aggressively (doubling movement steps), making bullets effectively “faster” and harder to dodge.

Original¶

• creature_apply_damage (0x004207c0): bullet damage scaling.
• projectile_update (0x00420b90): doubles the movement step count when the perk is active and the projectile is player-owned.

Rewrite¶

• Damage: src/crimson/creatures/damage.py: creature_apply_damage().
• Projectile stepping: src/crimson/projectiles.py: ProjectilePool.update().

35 — Ammunition Within (PerkId.AMMUNITION_WITHIN)¶

Effects¶

• While reloading (reload_timer != 0), firing is allowed if XP > 0:
• the shot fires without consuming ammo,
• the player takes self-damage per shot:
  • fire ammo class (weapon_ammo_class == 1): 0.15
  • otherwise: 1.0
• self-damage is applied via player_take_damage (so Thick Skinned / Dodger / Ninja interactions apply).
• Regression Bullets takes precedence if both perks are active.
• Reload restart is blocked while already reloading (shared guard with Regression Bullets).

Original¶

• player_fire_weapon (0x00444980): implements the “fire during reload by paying health” path.
• player_start_reload (0x00413430): restart guard.

Rewrite¶

• src/crimson/gameplay.py: player_fire_weapon() and player_start_reload().

36 — Veins of Poison (PerkId.VEINS_OF_POISON)¶

Effects¶

• When a creature lands a melee contact-damage tick on the player (and the player isn’t shielded):
• the attacking creature is poisoned (weak poison tick).
• Hardcore quest gating may suppress poison perks in a specific stage.

Original¶

• creature_update_all (0x00426220): on contact-damage, checks shield_timer and sets poison flags.
• Perk offering: hardcore quest gating.

Rewrite¶

• Contact poison flagging: src/crimson/creatures/runtime.py: _creature_interaction_contact_damage().
• Offer gating: src/crimson/gameplay.py: perk_can_offer().

37 — Toxic Avenger (PerkId.TOXIC_AVENGER)¶

Effects¶

• Like Veins of Poison, but applies strong poison (fast tick) to attackers on contact when not shielded.
• Requires Veins of Poison.

Original¶

• creature_update_all (0x00426220): sets both weak+strong poison flags.

Rewrite¶

• src/crimson/creatures/runtime.py: _creature_interaction_contact_damage().

38 — Regeneration (PerkId.REGENERATION)¶

Effects¶

• Each frame (when a random bit hits), heals each alive player by +dt, clamped to 100:
• triggers only if 0 < health < 100
• random gate: (rand & 1) != 0

Original¶

• perks_update_effects (0x00406b40): heal loop.

Rewrite¶

• src/crimson/gameplay.py: perks_update_effects() (Regeneration step).

39 — Pyromaniac (PerkId.PYROMANIAC)¶

Effects¶

• Fire damage multiplier: ×1.5 when the attacker has the perk.
• Consumes one RNG call as a side-effect in the original.
• Typically offered only when the current weapon is Flamethrower (selection gating).

Original¶

• creature_apply_damage (0x004207c0): fire damage scaling and a crt_rand() side-effect.
• Perk offering logic gates by current weapon.

Rewrite¶

• Damage: src/crimson/creatures/damage.py: creature_apply_damage().
• Offer gating: src/crimson/gameplay.py: perk generation rules.

40 — Ninja (PerkId.NINJA)¶

Effects¶

• When taking damage, ⅓ chance to dodge completely (rand % 3 == 0).
• Takes precedence over Dodger.

Original¶

• player_take_damage (0x00425e50): Ninja dodge check is evaluated before Dodger.

Rewrite¶

• src/crimson/player_damage.py: player_take_damage().

41 — Highlander (PerkId.HIGHLANDER)¶

Effects¶

• Incoming damage does not reduce health.
• Instead, each time a hit lands, there is a 10% chance to die instantly (rand % 10 == 0).
• Normal “on-hit disruption” still applies unless Unstoppable is active.

Original¶

• player_take_damage (0x00425e50): Highlander replacement behavior.

Rewrite¶

• src/crimson/player_damage.py: player_take_damage().

42 — Jinxed (PerkId.JINXED)¶

Effects¶

• Periodically:
• has a 1/10 chance to deal 5 self-damage (and emit two random decals),
• and, if Freeze bonus is not active, may instantly kill a random creature and award its XP (no normal death handler).
• Uses a global timer that is randomized after each activation.

Original¶

• perks_update_effects (0x00406b40): manages the timer and both the self-damage and random-creature-death branches.

Rewrite¶

• src/crimson/gameplay.py: perks_update_effects() (Jinxed steps).

43 — Perk Master (PerkId.PERK_MASTER)¶

Effects¶

• Perk selection offers 7 choices instead of 5 (and instead of 6 with Perk Expert).

Original¶

• Perk selection UI logic increases the choice count.

Rewrite¶

• src/crimson/gameplay.py: perk_choice_count().

44 — Reflex Boosted (PerkId.REFLEX_BOOSTED)¶

Effects¶

• Global slow-motion effect: scales frame dt by 0.9 while active (i.e., the world runs ~10% slower).

Original¶

• Main loop: when in gameplay state, frame_dt *= 0.9 while active.

Rewrite¶

• src/crimson/sim/world_state.py: WorldState.step().

45 — Greater Regeneration (PerkId.GREATER_REGENERATION)¶

Effects¶

• In this build, no runtime effect has been found (it appears to be a no-op perk).
• Death Clock clears its perk count on apply.

Original¶

• No active tick/usage located in the authoritative decompile; only selection/apply bookkeeping references.

Rewrite¶

• No runtime effect implemented (matches this build).
• Cleared by Death Clock apply: src/crimson/gameplay.py: Death Clock handler.

46 — Breathing Room (PerkId.BREATHING_ROOM)¶

Effects¶

• Two-player-only perk.
• On pick:
• reduces each alive player’s health to ⅓ (subtracts ⅔),
• forces every active creature into the “death staging” path without awarding XP,
• clears bonus_spawn_guard.

Original¶

• perk_apply (0x004055e0): applies health reduction, forces creature hitbox ramp, clears guard.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Breathing Room handler).

47 — Death Clock (PerkId.DEATH_CLOCK)¶

Effects¶

• On pick:
• clears Regeneration and Greater Regeneration perk counts,
• sets each alive player’s health to 100.
• While active:
• immune to all other damage,
• health drains at a fixed rate: 100 HP over 30 seconds (health -= dt * 3.3333333),
• medikits are removed from the random bonus pool,
• perk selection blocks a set of perks that would undermine the clock (regen, thick skinned, etc).

Original¶

• perk_apply (0x004055e0): clears regen perks and sets health to 100.
• player_take_damage (0x00425e50): early-return immunity.
• perks_update_effects (0x00406b40): per-frame drain logic.
• bonus_pick_random_type (0x00412470): medikit suppression while active.
• Perk offering: blocks multiple perks while active.

Rewrite¶

• Apply and offer gating: src/crimson/gameplay.py: perk_apply(), perk generation, bonus_pick_random_type().
• Damage immunity: src/crimson/player_damage.py: player_take_damage().
• Drain tick: src/crimson/gameplay.py: perks_update_effects() (Death Clock step).

48 — My Favourite Weapon (PerkId.MY_FAVOURITE_WEAPON)¶

Effects¶

• Increases clip size by +2 (applied on pick and on weapon assignment).
• Weapon bonuses cannot spawn or be selected; picking up a weapon bonus is ignored.

Original¶

• perk_apply (0x004055e0): immediate +2 clip size.
• weapon_assign_player (0x00452d40): applies +2 on assignment.
• Bonus selection/spawn logic removes weapon bonuses while active.

Rewrite¶

• src/crimson/gameplay.py: perk_apply(), weapon_assign_player(), bonus_pick_random_type(), BonusPool.try_spawn_on_kill(), bonus_apply().

49 — Bandage (PerkId.BANDAGE)¶

Effects¶

• Randomly multiplies current health by 1..50, then clamps to 100.
• Spawns an 8-particle burst effect.

Original¶

• perk_apply (0x004055e0): random multiply + clamp + burst FX.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Bandage handler).

50 — Angry Reloader (PerkId.ANGRY_RELOADER)¶

Effects¶

• During a reload, when the reload timer crosses the half threshold (from >50% to ≤50%) and reload_timer_max > 0.5:
• spawns a projectile ring centered on the player:
  • projectile type: Plasma Minigun
  • count: 7 + int(reload_timer_max * 4.0)
  • angle offset: 0.1
• plays sfx_explosion_small
• Uses Stationary Reloader’s 3× reload scaling when stationary.
• Projectile owner id depends on friendly-fire setting (-100 when off, else -1-player_index).

Original¶

• player_update (0x004136b0): half-threshold detection and ring spawn.

Rewrite¶

• src/crimson/gameplay.py: player_update() reload perks section.

51 — Ion Gun Master (PerkId.ION_GUN_MASTER)¶

Effects¶

• Ion blast damage multiplier: ×1.2.
• Ion AoE radii are scaled by ×1.2 for ion weapons.
• The damage multiplier is global (not attacker-bound): any damage_type == 7 damage is scaled while Ion Gun Master exists.

Original¶

• creature_apply_damage (0x004207c0): ion damage scaling (damage type 7).
• projectile_update (0x00420b90): ion AoE scale.

Rewrite¶

• Damage: src/crimson/creatures/damage.py: creature_apply_damage().
• AoE radii: src/crimson/projectiles.py: ion behavior scaling.

52 — Stationary Reloader (PerkId.STATIONARY_RELOADER)¶

Effects¶

• While stationary, reload speed is multiplied by 3.0.

Original¶

• player_update (0x004136b0): compares previous/current position to decide reload_scale = 3.0.

Rewrite¶

• src/crimson/gameplay.py: player_update().

53 — Man Bomb (PerkId.MAN_BOMB)¶

Effects¶

• Charges while stationary; when the timer exceeds an interval (starts at 4.0s):
• spawns 8 ion projectiles in a ring with per-projectile angular jitter:
  • even indices: Ion Minigun
  • odd indices: Ion Rifle
  • angle: idx*(pi/4) + ((rand%50)*0.01 - 0.25)
• plays sfx_explosion_small
• subtracts the interval from the timer and resets the interval back to 4.0.
• If the player moves, the timer is reset to 0.0 (so it only accumulates while stationary).
• Projectile owner id depends on friendly-fire setting (-100 when off, else -1-player_index).

Original¶

• player_update (0x004136b0): timer accumulation/reset and ring spawn logic.

Rewrite¶

• src/crimson/gameplay.py: _perk_update_man_bomb() and player_update().

54 — Fire Caugh (PerkId.FIRE_CAUGH)¶

Effects¶

• Periodically (interval randomized to 2–5 seconds):
• plays two weapon-fire SFX,
• spawns one Fire Bullets projectile from the muzzle:
  • muzzle is offset by a fixed -0.150915 rad rotation (same muzzle convention as normal firing),
  • aim is jittered using the same distance-scaled spread model as normal firing (dist * spread_heat),
• spawns a small grey sprite FX traveling forward from the muzzle.
• Projectile owner id depends on friendly-fire setting (-100 when off, else -1-player_index).

Original¶

• player_update (0x004136b0): timer and interval rerolling.
• Uses projectile_spawn(..., PROJECTILE_TYPE_FIRE_BULLETS, owner_id) plus fx_spawn_sprite(...).

Rewrite¶

• src/crimson/gameplay.py: _perk_update_fire_cough() and player_update() (sprite FX via GameplayState.sprite_effects).

55 — Living Fortress (PerkId.LIVING_FORTRESS)¶

Effects¶

• While stationary, a timer ramps up to 30s.
• Bullet damage scaling: for each alive player, bullet damage is multiplied by: living_fortress_timer * 0.05 + 1.0 (with multiple alive players, the multiplier applies once per player).

Original¶

• player_update (0x004136b0): timer accumulation/reset.
• creature_apply_damage (0x004207c0): bullet damage scaling.

Rewrite¶

• Timer: src/crimson/gameplay.py: player_update().
• Damage: src/crimson/creatures/damage.py: creature_apply_damage().

56 — Tough Reloader (PerkId.TOUGH_RELOADER)¶

Effects¶

• While reloading (reload_active != 0), incoming damage is multiplied by 0.5.

Original¶

• player_take_damage (0x00425e50): checks reload_active and halves damage.

Rewrite¶

• src/crimson/player_damage.py: player_take_damage().

57 — Lifeline 50-50 (PerkId.LIFELINE_50_50)¶

Effects¶

• On pick, iterates the creature pool in slot order and removes roughly half of eligible creatures:
• a toggle flips each slot; when “on”, and the creature is:
  • active,
  • hp <= 500,
  • (flags & 4) == 0, it is removed immediately (no normal death handling / no XP).
• spawns a small burst FX per removed creature (4 particles).

Original¶

• perk_apply (0x004055e0): direct deactivation in pool iteration order, plus burst FX.

Rewrite¶

• src/crimson/gameplay.py: perk_apply() (Lifeline 50-50 handler).