Bug Tracking for Platform Fighter Games

Platform fighters replace health bars with a percent system: the more damage you take, the farther you fly, until you are launched off the stage. That single mechanic, combined with stages full of platforms and ledges, makes for a genre where the physics is the gameplay. When knockback launches a player the wrong distance, an attack passes through a platform it should not, or a ledge grab fails at the worst moment, a match swings on a bug. This post covers tracking the three areas that define platform fighter bugs: knockback and percent, stage interactions, and hitboxes.

Knockback and the percent system

The knockback formula is the soul of a platform fighter. It takes the defender percent, the attacker move, the defender weight, and directional influence, and produces a launch trajectory that should be consistent and learnable. Players internalize this deeply, so they know roughly how far a given hit at a given percent will send them. When the launch is wrong, too far, too short, the wrong angle, it feels like the rules changed mid-match, and at high level a wrong launch can cost a stock outright.

Track knockback bugs by capturing the inputs to the formula and the output: the defender percent, the move that connected, the defender character and weight, the directional influence applied, and the resulting trajectory the game computed. With all of these you can re-run the knockback calculation and find which term is wrong, whether the percent scaling is off, the move base knockback is mis-set, or directional influence was applied incorrectly. A bare it launched me wrong is unactionable; the formula inputs and output make it solvable.

Stage interactions and collisions

Stages in a platform fighter are active participants, full of pass-through platforms, solid ground, ledges, and blast zones, and the interactions between characters and these elements are a rich source of bugs. A player who clips through solid ground, an attack that hits through a platform it should be blocked by, a character that gets stuck inside stage geometry, or a blast zone that triggers in the wrong place all stem from collision logic disagreeing with what the player sees the stage doing.

Track stage bugs by capturing the stage, the specific element involved, and the character position and velocity at the moment of the interaction. A collision bug is a relationship between a moving character and a piece of geometry, so you need both the geometry it hit and the motion that hit it. With the position and velocity you can reconstruct the approach and see why the collision resolved wrong, whether a pass-through platform was treated as solid, a one-way collision faced the wrong direction, or the character tunneled through at high speed.

Ledges, recovery, and edge cases

The ledge is the most contested piece of real estate in a platform fighter, because recovering to it is often the difference between living and losing a stock. Ledge bugs are therefore high-impact and frequently reported: a ledge grab that fails to register, a recovery move that should reach the ledge but does not snap to it, two players contesting a ledge in a way the game resolves inconsistently, or invincibility frames that apply wrongly on the grab. Each can decide a match at its most tense moment.

Track ledge bugs by capturing the character state during the attempt: the position relative to the ledge, the recovery move used, its frame, and whether the ledge was occupied or contested. A failed ledge snap is about the geometry of the snap region and the character trajectory into it, so you need both. With the position and the move frame you can determine whether the character was inside the snap window, whether the move had ledge-grab properties active on that frame, and whether a contested-ledge rule resolved as designed.

Hitboxes, hurtboxes, and disjoints

Like any fighting game, a platform fighter resolves combat through hitboxes and hurtboxes, but the airborne, mobile nature of the genre makes these especially tricky. Disjointed hitboxes, attacks whose hitbox extends beyond the character hurtbox, are a core mechanic, so players expect specific spacing relationships. A hitbox that is larger or lingers longer than intended, or a hurtbox that does not match the airdodge or animation, produces hits and whiffs that contradict what players see and have learned.

Track hitbox bugs by capturing the move, the frame, and the relative positions of the two characters at the moment of contact. A spacing dispute, you should not have reached me there, is resolvable when you can see the hitbox and hurtbox positions on the contested frame. Because platform fighters are so movement-heavy, also capture the velocities, since a hitbox that behaves correctly when both players are still can resolve differently when they are moving fast, and that motion context is often where the real bug hides.

Setting it up with Bugnet

Bugnet fits platform fighters because the in-game report button captures state automatically the instant a player hits a wrong launch, a stage clip, or a failed ledge grab, while the match state is still live. You can attach the percent, the move, the knockback the game computed, the stage element and collision, and the hitbox state as custom fields. That turns an emotional the knockback was wrong into a report carrying the formula inputs and output, so you can re-run the calculation and find the off term instead of trying to eyeball a launch from a description.

Because the same knockback miscalculation or stage-collision bug gets hit by many players in similar situations, Bugnet folds duplicate reports into one issue with an occurrence count, so a genuinely broken interaction rises above isolated mistakes. You can filter by character, stage, or move using your custom fields to pull every report about one ledge or one attack, which is how you triage a physics-heavy game with many interacting parts. One dashboard with the percent, stage, and frame data attached lets you reproduce and fix these match-swinging bugs precisely.

Protecting consistency match to match

The studios that keep platform fighters competitive treat physics consistency as sacred, because the genre depends on players being able to predict knockback, spacing, and recovery from experience. Every confirmed knockback or collision bug, captured with its inputs and state, becomes a regression test that asserts the same situation produces the same result, building a net that protects the learnable consistency players rely on. A wrong launch that slips into a patch can quietly invalidate matchups across the whole roster.

Make this a habit around every release. Re-run the captured knockback and collision scenarios, review the top ledge and hitbox reports by occurrence count, and verify that no change to a character or stage broke an interaction players had memorized. A platform fighter rewards mastery, and mastery requires that the physics behave the same way every time. Capture the percent, the stage, and the frame, reproduce each dispute exactly, and lock the fix in so the next match plays by the same rules as the last.

In a platform fighter the physics is the gameplay. Capture the percent, the stage element, and the frame, and a match-swinging launch or ledge bug becomes reproducible.