mirror of
https://github.com/libretro/fixGB.git
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74 lines
1.4 KiB
C
74 lines
1.4 KiB
C
/*
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* Copyright (C) 2017 FIX94
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*
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* This software may be modified and distributed under the terms
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* of the MIT license. See the LICENSE file for details.
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <string.h>
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#include <inttypes.h>
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#include <string.h>
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#include "input.h"
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//used externally by main.c
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uint8_t inValReads[8];
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uint8_t modeSelect = 3;
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#define DEBUG_INPUT 0
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void inputInit()
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{
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modeSelect = 3;
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}
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void inputClear()
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{
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memset(inValReads, 0, 8);
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}
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void inputSet8(uint16_t addr, uint8_t in)
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{
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(void)addr;
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modeSelect = ((in)>>4)&0x3;
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#if DEBUG_INPUT
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printf("Input: Set %02x->%02x\n",in,modeSelect);
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#endif
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}
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uint8_t inputGet8(uint16_t addr)
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{
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(void)addr;
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uint8_t outVal = 0;
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if(modeSelect == 1)
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{
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if(inValReads[BUTTON_A])
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outVal |= 1;
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if(inValReads[BUTTON_B])
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outVal |= 2;
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if(inValReads[BUTTON_SELECT])
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outVal |= 4;
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if(inValReads[BUTTON_START])
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outVal |= 8;
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}
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else if(modeSelect == 2)
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{
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if(inValReads[BUTTON_RIGHT])
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outVal |= 1;
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if(inValReads[BUTTON_LEFT])
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outVal |= 2;
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if(inValReads[BUTTON_UP])
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outVal |= 4;
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if(inValReads[BUTTON_DOWN])
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outVal |= 8;
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}
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return (~(outVal|(modeSelect<<4)));
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}
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bool inputAny()
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{
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return !!(inValReads[BUTTON_A]|inValReads[BUTTON_B]|inValReads[BUTTON_SELECT]|inValReads[BUTTON_START]
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|inValReads[BUTTON_RIGHT]|inValReads[BUTTON_LEFT]|inValReads[BUTTON_UP]|inValReads[BUTTON_DOWN]);
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}
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