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62938: Extra Life Flash Effect
Used by the routine at CheckScoreAwardLife.
Creates the extra life award flash effect. Sets the attribute fill colour to 18 and runs 12 screen-flash frames, each calling Draw_Colour_Flash_Rectangle to repaint the attribute area and Advance_Flash_Colour_Cycle to advance the colour cycling animation. The screen is then wiped by ClearScreenBuffer and a second pass of 12 frames plays with the colour cleared.
Extra_Life_Flash 62938 LD A,18 Set the screen flash colour.
62940 LD (50439),A Write the flash colour to the attribute fill register.
62943 LD A,11 Set the flash loop counter.
Extra_Life_Flash_Loop1 62945 PUSH AF Stash the loop counter on the stack.
62946 CALL Draw_Colour_Flash_Rectangle Repaint the display with the flash colour.
62949 CALL Advance_Flash_Colour_Cycle Advance the colour cycling animation.
62952 POP AF Restore the loop counter from the stack.
62953 DEC A Decrease the loop counter and loop back for the next frame.
62954 CP 255
62956 JR NZ,Extra_Life_Flash_Loop1
Wipe the screen, clear the flash colour and run a second pass.
62958 CALL ClearScreenBuffer Wipe the screen.
62961 LD A,0 Clear the attribute fill register.
62963 LD (50439),A
62966 LD A,11 Set the second loop counter.
Extra_Life_Flash_Loop2 62968 PUSH AF Stash the loop counter on the stack.
62969 CALL Draw_Colour_Flash_Rectangle Repaint the display with the cleared colour.
62972 CALL Advance_Flash_Colour_Cycle Advance the colour cycling animation.
62975 POP AF Restore the loop counter from the stack.
62976 DEC A Decrease the loop counter and loop back for the next frame.
62977 CP 255
62979 JR NZ,Extra_Life_Flash_Loop2
62981 RET Return.
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