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⌂ ∞ ▽ Elite on the BBC Micro and NES

Drawing ships: DrawShipInBitplane

[NES version, Bank 7]

       Name: DrawShipInBitplane                                      [Show more]
       Type: Subroutine
   Category: Drawing ships
    Summary: Flip the drawing bitplane and draw the current ship in the newly
             flipped bitplane

    Context: See this subroutine in context in the source code
 References: This subroutine is called as follows:
             * BRIEF calls DrawShipInBitplane
             * ESCAPE calls DrawShipInBitplane
             * PAS1 calls DrawShipInBitplane
             * TITLE calls DrawShipInBitplane




.DrawShipInBitplane

 JSR FlipDrawingPlane   ; Flip the drawing bitplane so we draw into the bitplane
                        ; that isn't visible on-screen

 JSR LL9_b1             ; Draw the current ship into the newly flipped drawing
                        ; bitplane

                        ; Fall through into DrawBitplaneInNMI to configure the
                        ; NMI to send the drawing bitplane to the PPU