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Aviator on the BBC Micro

The Theme: hitTimer

Name: hitTimer [Show more] Type: Variable Category: The Theme Summary: The time since we hit an alien, so we can time its explosion Deep dive: Explosions and turbulence
The hit timer starts at 27 when we make a hit. While it is non-zero, the gun can't be fired and any attacking aliens stop moving until the timer runs down. This is called EPLO in the original source.
.hitTimer EQUB &26 \ Zeroed in ResetVariables