Series

Star Fox

10 games, 1993–2026.

Games

Mechanics

Mechanic	Star Fox 64 1997
Barrel roll	Deflect
Boost meter	Shared, with cooldown
Charge shot	Press to fire
Locational damage	Wing loss
Lock-on shot	Search and home

A marked cell changed from the game before. “Uses” means the game has the mechanic, with no variant recorded yet.

Every claim, by mechanic and game

Concept	Star Fox 64 1997
Barrel roll	In the US 1.1 version of Star Fox 64, the Arwing rolls when Z or R is pressed twice. The first press sets that button's counter to 10, which `Player_UpdateArwingRoll` counts down once per player update, and a second press while it is above 0 starts the roll, turning the ship 30 degrees an update for 10 updates and then slowing by 5 degrees an update until it stops. `barrelRollAlpha` falls by 30 every update while it is above 0, and in each update the roll's count is still above 0 after counting down (9 of its 10) it then gains 100, capped at 180, a net rise of 70 an update. While that value is above 0, the enemy-shot update (`Effect_EnemyShot_Update`) widens the shot's box around the player by 100 units on each axis, sends a shot inside it off in a new direction, and applies no damage. Code
Boost meter	In the US 1.1 version of Star Fox 64, the Arwing's boost and brake share one meter, `boostMeter`, which counts up from 0 as it is used and stops at 90. Holding the boost button adds 3 a player update on rails and 1.5 in all-range mode (`Player_ArwingBoost`), and holding brake adds the same amounts (`Player_ArwingBrake`). Each of the two functions takes back 0.5 a update on rails (0.35 in all-range mode) whenever its own action isn't running, so the meter falls by 1 an update on rails when neither button is held. Reaching 90, holding both buttons with the meter above 0, or letting go of both with the meter above 0 sets `boostCooldown`, which blocks both actions until the meter is back to 0. Code
Charge shot	uses
Locational damage	In the US 1.1 version of Star Fox 64, `Player_Setup` gives the player 255 shield units (less with a Versus handicap), and healing stops at `Play_GetMaxShields`: 383 with three or more gold rings, otherwise 255. A hit's damage, doubled in Expert mode, drains from the shield at 2 units an update (`Player_UpdateShields`), and an enemy laser's damage is 20; a hit while `gHasShield` is set does none. Each Arwing wing starts at 60 health (10 in Expert mode). A hit the code gives direction 1 or 2 takes 20 from the right or left wing, directions 3 and 4 take 15 from one wing at random, and direction 0, which enemy shots pass, takes none; a wing at 0 breaks. While either wing is broken or absent (`WINGSTATE_NONE`; the test is `<= WINGSTATE_BROKEN`), `Player_Shoot` sets the lasers back to single every update. Code
Lock-on shot	In the US 1.1 version of Star Fox 64, holding A counts a charge counter up by 1 a player update to a cap of 21, and an update without A held counts it down by 1 (`Player_UpdateLockOn`). A fresh press of A, whose own update first adds 1 to the counter, fires the charged shot (`PLAYERSHOT_LOCK_ON`) if an enemy is locked on or the counter is then above 10 (so 10 or more before the press). Either path fires only if the player's charged-shot slot (`gPlayerShots[14 - player->num]`) is free, holds a shot of another type, or holds a charged shot that has lost its target (the locked path) or grown past scale 1 (the counter path); a press that fires nothing sets the counter to 0. Once the counter is above 20, while A is held, nothing is locked, and Z and R aren't both held, it launches a search shot every fourth game frame, and the first targetable enemy within 300 units of that shot on each axis (200 in all-range mode) is locked on for a count of 20, which counts down only while A is up. Each update while its target stays locked, the charged shot turns toward it (`PlayerShot_UpdateLockOnShot`). Code