342 lines
11 KiB
C++
Executable File
342 lines
11 KiB
C++
Executable File
#ifdef SNES_CPP
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uint8 SNES::Input::port_read(bool portnumber) {
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port_t &p = port[portnumber];
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switch(p.device) {
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case DeviceJoypad: {
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if(p.counter0 >= 16) return 1;
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unsigned deviceid = (portnumber == 0 ? DeviceIDJoypad1 : DeviceIDJoypad2);
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return snesinterface.input_poll(deviceid, p.counter0++);
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} //case DeviceJoypad
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case DeviceMultitap: {
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if(cpu.joylatch()) return 2; //when latch is high -- data2 = 1, data1 = 0
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unsigned deviceidx, deviceid0, deviceid1;
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if(portnumber == 0) {
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if(cpu.pio() & 0x40) {
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deviceidx = p.counter0;
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if(deviceidx >= 16) return 3;
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p.counter0++;
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deviceid0 = DeviceIDMultitap1A;
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deviceid1 = DeviceIDMultitap1B;
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} else {
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deviceidx = p.counter1;
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if(deviceidx >= 16) return 3;
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p.counter1++;
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deviceid0 = DeviceIDMultitap1C;
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deviceid1 = DeviceIDMultitap1D;
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}
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} else {
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if(cpu.pio() & 0x80) {
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deviceidx = p.counter0;
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if(deviceidx >= 16) return 3;
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p.counter0++;
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deviceid0 = DeviceIDMultitap2A;
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deviceid1 = DeviceIDMultitap2B;
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} else {
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deviceidx = p.counter1;
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if(deviceidx >= 16) return 3;
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p.counter1++;
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deviceid0 = DeviceIDMultitap2C;
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deviceid1 = DeviceIDMultitap2D;
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}
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}
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return (snesinterface.input_poll(deviceid0, deviceidx) << 0)
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| (snesinterface.input_poll(deviceid1, deviceidx) << 1);
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} //case DeviceMultitap
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case DeviceMouse: {
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if(p.counter0 >= 32) return 1;
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unsigned deviceid = (portnumber == 0 ? DeviceIDMouse1 : DeviceIDMouse2);
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int position_x = snesinterface.input_poll(deviceid, MouseX); //-n = left, 0 = center, +n = right
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int position_y = snesinterface.input_poll(deviceid, MouseY); //-n = up, 0 = center, +n = right
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bool direction_x = position_x < 0; //0 = right, 1 = left
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bool direction_y = position_y < 0; //0 = down, 1 = up
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if(position_x < 0) position_x = -position_x; //abs(position_x)
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if(position_y < 0) position_y = -position_y; //abs(position_x)
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position_x = min(127, position_x); //range = 0 - 127
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position_y = min(127, position_y); //range = 0 - 127
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switch(p.counter0++) { default:
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case 0: return 0;
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case 1: return 0;
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case 2: return 0;
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case 3: return 0;
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case 4: return 0;
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case 5: return 0;
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case 6: return 0;
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case 7: return 0;
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case 8: return snesinterface.input_poll(deviceid, MouseRight);
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case 9: return snesinterface.input_poll(deviceid, MouseLeft);
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case 10: return 0; //speed (0 = slow, 1 = normal, 2 = fast, 3 = unused)
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case 11: return 0; // ||
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case 12: return 0; //signature
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case 13: return 0; // ||
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case 14: return 0; // ||
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case 15: return 1; // ||
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case 16: return (direction_y) & 1;
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case 17: return (position_y >> 6) & 1;
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case 18: return (position_y >> 5) & 1;
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case 19: return (position_y >> 4) & 1;
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case 20: return (position_y >> 3) & 1;
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case 21: return (position_y >> 2) & 1;
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case 22: return (position_y >> 1) & 1;
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case 23: return (position_y >> 0) & 1;
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case 24: return (direction_x) & 1;
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case 25: return (position_x >> 6) & 1;
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case 26: return (position_x >> 5) & 1;
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case 27: return (position_x >> 4) & 1;
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case 28: return (position_x >> 3) & 1;
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case 29: return (position_x >> 2) & 1;
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case 30: return (position_x >> 1) & 1;
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case 31: return (position_x >> 0) & 1;
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}
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} //case DeviceMouse
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case DeviceSuperScope: {
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if(portnumber == 0) break; //Super Scope in port 1 not supported ...
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if(p.counter0 >= 8) return 1;
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if(p.counter0 == 0) {
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//turbo is a switch; toggle is edge sensitive
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bool turbo = snesinterface.input_poll(DeviceIDSuperScope, SuperScopeTurbo);
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if(turbo && !p.superscope.turbolock) {
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p.superscope.turbo = !p.superscope.turbo; //toggle state
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p.superscope.turbolock = true;
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} else if(!turbo) {
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p.superscope.turbolock = false;
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}
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//trigger is a button
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//if turbo is active, trigger is level sensitive; otherwise it is edge sensitive
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p.superscope.trigger = false;
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bool trigger = snesinterface.input_poll(DeviceIDSuperScope, SuperScopeTrigger);
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if(trigger && (p.superscope.turbo || !p.superscope.triggerlock)) {
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p.superscope.trigger = true;
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p.superscope.triggerlock = true;
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} else if(!trigger) {
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p.superscope.triggerlock = false;
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}
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//cursor is a button; it is always level sensitive
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p.superscope.cursor = snesinterface.input_poll(DeviceIDSuperScope, SuperScopeCursor);
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//pause is a button; it is always edge sensitive
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p.superscope.pause = false;
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bool pause = snesinterface.input_poll(DeviceIDSuperScope, SuperScopePause);
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if(pause && !p.superscope.pauselock) {
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p.superscope.pause = true;
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p.superscope.pauselock = true;
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} else if(!pause) {
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p.superscope.pauselock = false;
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}
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p.superscope.offscreen =
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p.superscope.x < 0 || p.superscope.x >= 256
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|| p.superscope.y < 0 || p.superscope.y >= (ppu.overscan() ? 240 : 225);
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}
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switch(p.counter0++) {
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case 0: return p.superscope.trigger;
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case 1: return p.superscope.cursor;
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case 2: return p.superscope.turbo;
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case 3: return p.superscope.pause;
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case 4: return 0;
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case 5: return 0;
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case 6: return p.superscope.offscreen;
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case 7: return 0; //noise (1 = yes)
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}
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} //case DeviceSuperScope
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case DeviceJustifier:
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case DeviceJustifiers: {
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if(portnumber == 0) break; //Justifier in port 1 not supported ...
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if(p.counter0 >= 32) return 1;
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if(p.counter0 == 0) {
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p.justifier.trigger1 = snesinterface.input_poll(DeviceIDJustifier1, JustifierTrigger);
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p.justifier.start1 = snesinterface.input_poll(DeviceIDJustifier1, JustifierStart);
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if(p.device == DeviceJustifiers) {
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p.justifier.trigger2 = snesinterface.input_poll(DeviceIDJustifier2, JustifierTrigger);
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p.justifier.start2 = snesinterface.input_poll(DeviceIDJustifier2, JustifierStart);
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} else {
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p.justifier.x2 = -1;
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p.justifier.y2 = -1;
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p.justifier.trigger2 = false;
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p.justifier.start2 = false;
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}
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}
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switch(p.counter0++) {
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case 0: return 0;
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case 1: return 0;
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case 2: return 0;
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case 3: return 0;
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case 4: return 0;
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case 5: return 0;
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case 6: return 0;
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case 7: return 0;
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case 8: return 0;
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case 9: return 0;
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case 10: return 0;
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case 11: return 0;
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case 12: return 1; //signature
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case 13: return 1; // ||
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case 14: return 1; // ||
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case 15: return 0; // ||
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case 16: return 0;
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case 17: return 1;
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case 18: return 0;
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case 19: return 1;
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case 20: return 0;
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case 21: return 1;
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case 22: return 0;
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case 23: return 1;
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case 24: return p.justifier.trigger1;
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case 25: return p.justifier.trigger2;
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case 26: return p.justifier.start1;
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case 27: return p.justifier.start2;
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case 28: return p.justifier.active;
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case 29: return 0;
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case 30: return 0;
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case 31: return 0;
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}
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} //case DeviceJustifier(s)
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} //switch(p.device)
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//no device connected
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return 0;
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}
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//scan all input; update cursor positions if needed
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void SNES::Input::update() {
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snesinterface.input_poll();
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port_t &p = port[1];
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switch(p.device) {
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case DeviceSuperScope: {
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int x = snesinterface.input_poll(DeviceIDSuperScope, SuperScopeX);
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int y = snesinterface.input_poll(DeviceIDSuperScope, SuperScopeY);
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x += p.superscope.x;
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y += p.superscope.y;
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p.superscope.x = max(-16, min(256 + 16, x));
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p.superscope.y = max(-16, min(240 + 16, y));
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latchx = p.superscope.x;
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latchy = p.superscope.y;
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} break;
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case DeviceJustifier:
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case DeviceJustifiers: {
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int x1 = snesinterface.input_poll(DeviceIDJustifier1, JustifierX);
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int y1 = snesinterface.input_poll(DeviceIDJustifier1, JustifierY);
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x1 += p.justifier.x1;
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y1 += p.justifier.y1;
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p.justifier.x1 = max(-16, min(256 + 16, x1));
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p.justifier.y1 = max(-16, min(240 + 16, y1));
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int x2 = snesinterface.input_poll(DeviceIDJustifier2, JustifierX);
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int y2 = snesinterface.input_poll(DeviceIDJustifier2, JustifierY);
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x2 += p.justifier.x2;
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y2 += p.justifier.y2;
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p.justifier.x2 = max(-16, min(256 + 16, x2));
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p.justifier.y2 = max(-16, min(240 + 16, y2));
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if(p.justifier.active == 0) {
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latchx = p.justifier.x1;
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latchy = p.justifier.y1;
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} else {
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latchx = (p.device == DeviceJustifiers ? p.justifier.x2 : -1);
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latchy = (p.device == DeviceJustifiers ? p.justifier.y2 : -1);
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}
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} break;
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}
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}
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void SNES::Input::port_set_device(bool portnumber, unsigned device) {
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port_t &p = port[portnumber];
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p.device = device;
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p.counter0 = 0;
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p.counter1 = 0;
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//set iobit to true if device is capable of latching PPU counters
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iobit = port[1].device == DeviceSuperScope
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|| port[1].device == DeviceJustifier
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|| port[1].device == DeviceJustifiers;
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latchx = -1;
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latchy = -1;
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if(device == DeviceSuperScope) {
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p.superscope.x = 256 / 2;
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p.superscope.y = 240 / 2;
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p.superscope.trigger = false;
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p.superscope.cursor = false;
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p.superscope.turbo = false;
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p.superscope.pause = false;
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p.superscope.offscreen = false;
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p.superscope.turbolock = false;
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p.superscope.triggerlock = false;
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p.superscope.pauselock = false;
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} else if(device == DeviceJustifier) {
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p.justifier.active = 0;
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p.justifier.x1 = 256 / 2;
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p.justifier.y1 = 240 / 2;
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p.justifier.x2 = -1;
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p.justifier.y2 = -1;
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p.justifier.trigger1 = false;
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p.justifier.trigger2 = false;
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p.justifier.start1 = false;
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p.justifier.start2 = false;
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} else if(device == DeviceJustifiers) {
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p.justifier.active = 0;
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p.justifier.x1 = 256 / 2 - 16;
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p.justifier.y1 = 240 / 2;
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p.justifier.x2 = 256 / 2 + 16;
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p.justifier.y2 = 240 / 2;
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p.justifier.trigger1 = false;
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p.justifier.trigger2 = false;
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p.justifier.start1 = false;
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p.justifier.start2 = false;
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}
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}
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void SNES::Input::poll() {
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port[0].counter0 = 0;
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port[0].counter1 = 0;
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port[1].counter0 = 0;
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port[1].counter1 = 0;
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port[1].justifier.active = !port[1].justifier.active;
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}
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void SNES::Input::init() {
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}
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#endif //ifdef SNES_CPP
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