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⌂ ∞ Elite on the BBC Micro and NES

Universe: KS1

[NES version, Bank 0]

       Name: KS1                                                     [Show more]
       Type: Subroutine
   Category: Universe
    Summary: Remove the current ship from our local bubble of universe

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * Main flight loop (Part 12 of 16) calls KS1
             * KS2 calls via KS3




 Part 12 of the main flight loop calls this routine to remove the ship that is
 currently being analysed by the flight loop. Once the ship is removed, it
 jumps back to MAL1 to rejoin the main flight loop, with X pointing to the
 same slot that we just cleared (and which now contains the next ship in the
 local bubble of universe).



 Arguments:

   XX0                  The address of the blueprint for this ship

   INF                  The address of the data block for this ship



 Other entry points:

   KS3                  Contains an RTS



.KS3

 RTS                    ; Return from the subroutine

.KS1

 LDX XSAV               ; Store the current ship's slot number in XSAV

 JSR KILLSHP            ; Call KILLSHP to remove the ship in slot X from our
                        ; local bubble of universe

 LDX XSAV               ; Restore the current ship's slot number from XSAV,
                        ; which now points to the next ship in the bubble

 RTS                    ; Return from the subroutine