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⌂ ∞ ▽ Elite on the BBC Micro and NES

Drawing ships: HideExplosionBurst

[NES version, Bank 7]

       Name: HideExplosionBurst                                      [Show more]
       Type: Subroutine
   Category: Drawing ships
    Summary: Hide the four sprites that make up the explosion burst that
             flashes up when a ship explodes

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * DOEXP calls HideExplosionBurst
             * LL164 calls HideExplosionBurst
             * RES2 calls HideExplosionBurst




.HideExplosionBurst

 LDX #4                 ; Set X = 4 so we hide four sprites

 LDY #236               ; Set Y so we start hiding from sprite 236 / 4 = 59

 JMP HideSprites        ; Jump to HideSprites to hide four sprites from sprite
                        ; 59 onwards (i.e. 59 to 62), returning from the
                        ; subroutine using a tail call