Routines
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D565: Draw Revolver Display
Used by the routine at DrawGameScreen.
Draws the picture of the revolver, which is a block of eight by eight tiles, and then colours the chambers which are loaded.
revolver-display
Draw the picture of the revolver.
DrawRevolverDisplay D565 LD A,$41 Set the attribute to INK:BLUE, PAPER:BLACK (BRIGHT).
D567 EX AF,AF'
D568 LD HL,$5004 Point HL at 5004 (in the screen buffer).
Move it to the right in the town.
D56B CALL AddTownOffsetToHL Call AddTownOffsetToHL.
D56E LD DE,$5E51 Point DE at RevolverTilesDisplay.
D571 LD BC,$0808 Set the size of the block to eight by eight.
Draw the block.
D574 CALL DrawTileBlock Call DrawTileBlock.
Colour the chambers which are loaded.
D577 LD A,($A262) Return if BulletsLoaded is zero.
D57A AND A
D57B RET Z
D57C LD E,A Keep the number in E.
D57D XOR A Start with the first chamber.
Colour a loaded chamber.
DrawRevolverDisplay_Chamber D57E PUSH AF Stash the chamber number and the number of bullets on the stack.
D57F PUSH DE
D580 LD BC,$C9E0 Point BC at ChamberAddresses.
Find the attribute address of the chamber.
D583 CALL GetTableEntry Call GetTableEntry.
Move it to the right in the town.
D586 CALL AddTownOffsetToHL Call AddTownOffsetToHL.
D589 LD A,$71 Set the attribute to INK:BLUE, PAPER:YELLOW (BRIGHT).
Colour the chamber.
D58B CALL FillChamber Call FillChamber.
D58E POP DE Restore the chamber number and the number of bullets from the stack.
D58F POP AF
D590 INC A Move on to the next chamber.
D591 CP E Jump to DrawRevolverDisplay_Chamber if there are chambers left.
D592 JR NZ,DrawRevolverDisplay_Chamber
D594 RET Return.
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