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134 lines
3.7 KiB
C++
134 lines
3.7 KiB
C++
#include "touch_dpad.h"
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#include <math.h>
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#ifndef PI
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#define PI 3.14159265358979f
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#endif
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const float k1 = tanf(PI / 8.f); // tan of 22.5 deg for 8 sector dpad
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const float k2 = 1 / k1;
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TouchDpad::TouchDpad(int32_t pos_x, int32_t pos_y, int32_t pos_r, DpadType dpad_type)
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{
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init(pos_x, pos_y, pos_r, dpad_type);
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}
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void TouchDpad::init(int32_t pos_x, int32_t pos_y, int32_t pos_r, DpadType dpad_type)
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{
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TouchControl::init(pos_x, pos_y, pos_r);
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this->control_type = CT_DPAD;
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this->dead_zone_inner = 0;
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this->dead_zone_inner2 = 0;
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this->dpad_type = dpad_type;
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this->invert_x = 1;
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this->invert_y = 1;
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this->button = 0;
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}
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void TouchDpad::setDeadZoneInner(int32_t dead_zone_inner)
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{
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this->dead_zone_inner = dead_zone_inner;
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this->dead_zone_inner2 = dead_zone_inner * dead_zone_inner;
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}
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void TouchDpad::setInvertX(bool invert_x)
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{
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this->invert_x = invert_x ? -1 : 1;
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}
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void TouchDpad::setInvertY(bool invert_y)
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{
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this->invert_y = invert_y ? -1 : 1;
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}
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#define XINPUT_DPAD_UP 0b0001
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#define XINPUT_DPAD_DOWN 0b0010
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#define XINPUT_DPAD_LEFT 0b0100
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#define XINPUT_DPAD_RIGHT 0b1000
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int8_t TouchDpad::touch(int8_t fid, int32_t tx, int32_t ty)
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{
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if (finger_id != -1 && finger_id != fid)
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{
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return 0;
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}
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int8_t ret = 2;
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tx -= pos_x;
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ty -= pos_y;
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button = 0;
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int32_t t2 = tx * tx + ty * ty;
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// outside the range
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if (t2 > pos_r2)
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{
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finger_id = -1;
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return 0;
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}
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else // inside inner dead_zone
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{
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finger_id = fid;
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if (t2 < dead_zone_inner2)
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{
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ret = 1;
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}
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else // in bounds
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{
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switch (dpad_type)
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{
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case DPAD_TYPE_SECTOR_4:
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button |= (invert_y * ty > invert_x * -tx);
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button |= (invert_y * ty > invert_x * tx) << 1;
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switch (button)
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{
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case 0b00: button = XINPUT_DPAD_DOWN; break;
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case 0b01: button = XINPUT_DPAD_RIGHT; break;
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case 0b11: button = XINPUT_DPAD_UP; break;
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case 0b10: button = XINPUT_DPAD_LEFT; break;
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default: button = 0; break;
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}
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break;
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case DPAD_TYPE_SECTOR_8:
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button |= (invert_y * ty > invert_x * -tx * k2);
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button |= (invert_y * ty > invert_x * -tx * k1) << 1;
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button |= (invert_y * ty > invert_x * tx * k1) << 2;
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button |= (invert_y * ty > invert_x * tx * k2) << 3;
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switch (button)
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{
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case 0: button = XINPUT_DPAD_DOWN; break;
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case 1: button = XINPUT_DPAD_DOWN | XINPUT_DPAD_RIGHT; break;
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case 3: button = XINPUT_DPAD_RIGHT; break;
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case 7: button = XINPUT_DPAD_UP | XINPUT_DPAD_RIGHT; break;
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case 15: button = XINPUT_DPAD_UP; break;
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case 14: button = XINPUT_DPAD_UP | XINPUT_DPAD_LEFT; break;
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case 12: button = XINPUT_DPAD_LEFT; break;
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case 8: button = XINPUT_DPAD_DOWN | XINPUT_DPAD_LEFT; break;
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default: button = 0; break;
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}
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break;
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default:
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break;
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}
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}
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}
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return ret;
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} |