mirror of https://github.com/nmlgc/ReC98.git
51 lines
873 B
NASM
51 lines
873 B
NASM
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; Waits ≥1 frames for all held inputs to be released, then waits the given
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; number of [frames] for an input to be pressed. Set [frames] to 0 or 9999
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; to wait forever.
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; void 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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push si
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push di
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mov si, [bp+@@frames]
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xor di, di
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@@release_loop:
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nop
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call _input_reset_sense
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push 1
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nopcall frame_delay
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nopcall _input_sense
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cmp _input, INPUT_NONE
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jnz short @@release_loop
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or si, si
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jnz short @@longer?
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mov si, 9999
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jmp short @@longer?
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@@press_loop:
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nop
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call _input_reset_sense
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push 1
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nopcall frame_delay
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nopcall _input_sense
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cmp _input, INPUT_NONE
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jnz short @@ret
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inc di
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cmp si, 9999
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jnz short @@longer?
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xor di, di
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@@longer?:
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cmp di, si
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jl short @@press_loop
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@@ret:
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pop di
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pop si
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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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