mirror of https://github.com/nmlgc/ReC98.git
35 lines
679 B
NASM
35 lines
679 B
NASM
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; Waits for all held inputs to be released, then waits the given number of
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; [frames] for an input to be pressed and returns the new input state.
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; Set [frames] to 0 to wait forever.
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; int pascal input_wait_for_change(int frames);
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_input_wait_for_change proc far
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@@frames = word ptr 6
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push bp
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mov bp, sp
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@@release_loop:
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call _input_reset_sense_held
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or ax, ax
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jnz short @@release_loop
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mov bp, [bp+@@frames]
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@@press_loop:
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call _input_reset_sense_held
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or ax, ax
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jnz short @@ret
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mov ax, vsync_Count1
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@@vsync:
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cmp ax, vsync_Count1
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jz short @@vsync
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or bp, bp
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jz short @@press_loop
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dec bp
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jnz short @@press_loop
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@@ret:
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pop bp
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retf 2
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_input_wait_for_change endp
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