dolphin/Externals/WiiUseSrc/Src/guitar_hero_3.c

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/*
* wiiuse
*
* Written By:
* Michael Laforest < para >
* Email: < thepara (--AT--) g m a i l [--DOT--] com >
*
* Copyright 2006-2007
*
* This file is part of wiiuse.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* $Header$
*
*/
/**
* @file
* @brief Guitar Hero 3 expansion device.
*/
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#ifdef WIN32
#include <Winsock2.h>
#endif
#include "definitions.h"
#include "wiiuse_internal.h"
#include "dynamics.h"
#include "events.h"
#include "guitar_hero_3.h"
static void guitar_hero_3_pressed_buttons(struct guitar_hero_3_t* gh3, short now);
/**
* @brief Handle the handshake data from the guitar.
*
* @param cc A pointer to a classic_ctrl_t structure.
* @param data The data read in from the device.
* @param len The length of the data block, in bytes.
*
* @return Returns 1 if handshake was successful, 0 if not.
*/
int guitar_hero_3_handshake(struct wiimote_t* wm, struct guitar_hero_3_t* gh3, byte* data, unsigned short len) {
int offset = 0;
/*
* The good fellows that made the Guitar Hero 3 controller
* failed to factory calibrate the devices. There is no
* calibration data on the device.
*/
gh3->btns = 0;
gh3->btns_held = 0;
gh3->btns_released = 0;
gh3->wb_raw = 0;
gh3->whammy_bar = 0.0f;
gh3->tb_raw = 0;
gh3->touch_bar = -1;
/* joystick stuff */
gh3->js.max.x = GUITAR_HERO_3_JS_MAX_X;
gh3->js.min.x = GUITAR_HERO_3_JS_MIN_X;
gh3->js.center.x = GUITAR_HERO_3_JS_CENTER_X;
gh3->js.max.y = GUITAR_HERO_3_JS_MAX_Y;
gh3->js.min.y = GUITAR_HERO_3_JS_MIN_Y;
gh3->js.center.y = GUITAR_HERO_3_JS_CENTER_Y;
/* handshake done */
wm->event = WIIUSE_GUITAR_HERO_3_CTRL_INSERTED;
wm->exp.type = EXP_GUITAR_HERO_3;
wm->timeout = WIIMOTE_DEFAULT_TIMEOUT;
return 1;
}
/**
* @brief The guitar disconnected.
*
* @param cc A pointer to a classic_ctrl_t structure.
*/
void guitar_hero_3_disconnected(struct guitar_hero_3_t* gh3) {
memset(gh3, 0, sizeof(struct guitar_hero_3_t));
}
/**
* @brief Handle guitar event.
*
* @param cc A pointer to a classic_ctrl_t structure.
* @param msg The message specified in the event packet.
*/
void guitar_hero_3_event(struct guitar_hero_3_t* gh3, byte* msg) {
int i;
/* decrypt data */
for (i = 0; i < 6; ++i)
msg[i] = (msg[i] ^ 0x17) + 0x17;
guitar_hero_3_pressed_buttons(gh3, BIG_ENDIAN_SHORT(*(short*)(msg + 4)));
gh3->js.pos.x = (msg[0] & GUITAR_HERO_3_JS_MASK);
gh3->js.pos.y = (msg[1] & GUITAR_HERO_3_JS_MASK);
gh3->tb_raw = (msg[2] & GUITAR_HERO_3_TOUCH_MASK);
gh3->wb_raw = (msg[3] & GUITAR_HERO_3_WHAMMY_MASK);
/* touch bar */
gh3->touch_bar = 0;
if (gh3->tb_raw > 0x1B)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_ORANGE;
else if (gh3->tb_raw > 0x18)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_ORANGE | GUITAR_HERO_3_TOUCH_BLUE;
else if (gh3->tb_raw > 0x15)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_BLUE;
else if (gh3->tb_raw > 0x13)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_BLUE | GUITAR_HERO_3_TOUCH_YELLOW;
else if (gh3->tb_raw > 0x10)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_YELLOW;
else if (gh3->tb_raw > 0x0D)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_AVAILABLE;
else if (gh3->tb_raw > 0x0B)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_YELLOW | GUITAR_HERO_3_TOUCH_RED;
else if (gh3->tb_raw > 0x08)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_RED;
else if (gh3->tb_raw > 0x05)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_RED | GUITAR_HERO_3_TOUCH_GREEN;
else if (gh3->tb_raw > 0x02)
gh3->touch_bar = GUITAR_HERO_3_TOUCH_GREEN;
/* whammy bar */
gh3->whammy_bar = (msg[3] - GUITAR_HERO_3_WHAMMY_BAR_MIN) / (float)(GUITAR_HERO_3_WHAMMY_BAR_MAX - GUITAR_HERO_3_WHAMMY_BAR_MIN);
/* joy stick */
calc_joystick_state(&gh3->js, gh3->js.pos.x, gh3->js.pos.y);
}
/**
* @brief Find what buttons are pressed.
*
* @param cc A pointer to a classic_ctrl_t structure.
* @param msg The message byte specified in the event packet.
*/
static void guitar_hero_3_pressed_buttons(struct guitar_hero_3_t* gh3, short now) {
/* message is inverted (0 is active, 1 is inactive) */
now = ~now & GUITAR_HERO_3_BUTTON_ALL;
/* preserve old btns pressed */
gh3->btns_last = gh3->btns;
/* pressed now & were pressed, then held */
gh3->btns_held = (now & gh3->btns);
/* were pressed or were held & not pressed now, then released */
gh3->btns_released = ((gh3->btns | gh3->btns_held) & ~now);
/* buttons pressed now */
gh3->btns = now;
}