repo2/firmware/joystick.c @ 173
| 46 | markw | #include "joystick.h"
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#include "regs.h"
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| 102 | markw | //#include <stdio.h>
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| 46 | markw | void joystick_poll(struct joystick_status * status)
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{
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status->x_ = 0;
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status->y_ = 0;
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status->fire_ = 0;
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unsigned char porta = *atari_porta;
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| 102 | markw | ||
status->y_ = !(porta&0x2) -((unsigned int)!(porta&0x1));
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status->x_ = !(porta&0x8) -((unsigned int)!(porta&0x4));
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status->fire_ = !(1&*atari_trig0);
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//if (porta != 0xff)
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//printf("%02x %x %x %x\n",porta,status->x_,status->y_,status->fire_);
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/*
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| 46 | markw | if (0==(porta&0x2)) // down
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{
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status->y_ =1;
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}
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else if (0==(porta&0x1)) // up
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{
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status->y_ =-1;
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}
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if (0==(porta&0x8)) // right
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{
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status->x_ = 1;
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}
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else if (0==(porta&0x4)) // left
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{
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status->x_ = -1;
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}
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if (0==(1&*atari_trig0)) // fire
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{
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status->fire_ = 1;
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}
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| 102 | markw | */
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| 46 | markw | }
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void joystick_wait(struct joystick_status * status, enum JoyWait waitFor)
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{
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while (1)
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{
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joystick_poll(status);
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switch (waitFor)
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{
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case WAIT_QUIET:
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if (status->x_ == 0 && status->y_ == 0 && status->fire_ == 0) return;
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break;
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case WAIT_FIRE:
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if (status->fire_ == 1) return;
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break;
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case WAIT_EITHER:
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if (status->fire_ == 1) return;
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// fall through
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case WAIT_MOVE:
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| 102 | markw | if (status->x_ !=0 || status->y_ != 0) return;
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| 46 | markw | break;
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}
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}
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}
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