usbloadergx/source/GUI/gui_trigger.cpp

/****************************************************************************
 * libwiigui
 *
 * Tantric 2009
 *
 * gui_trigger.cpp
 *
 * GUI class definitions
 ***************************************************************************/

#include "gui.h"

static int scrollDelay = 0;

/**
 * Constructor for the GuiTrigger class.
 */
GuiTrigger::GuiTrigger()
{
    chan = -1;
    memset(&wpad, 0, sizeof(WPADData));
    memset(&pad, 0, sizeof(PADData));
}

/**
 * Destructor for the GuiTrigger class.
 */
GuiTrigger::~GuiTrigger()
{
}

/**
 * Sets a simple trigger. Requires:
 * - Element is selected
 * - Trigger button is pressed
 */
void GuiTrigger::SetSimpleTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
{
    type = TRIGGER_SIMPLE;
    chan = ch;
    wpad.btns_d = wiibtns;
    pad.btns_d = gcbtns;
}

/**
 * Sets a held trigger. Requires:
 * - Element is selected
 * - Trigger button is pressed and held
 */
void GuiTrigger::SetHeldTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
{
    type = TRIGGER_HELD;
    chan = ch;
    wpad.btns_h = wiibtns;
    pad.btns_h = gcbtns;
}

/**
 * Sets a button trigger. Requires:
 * - Trigger button is pressed
 */
void GuiTrigger::SetButtonOnlyTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
{
    type = TRIGGER_BUTTON_ONLY;
    chan = ch;
    wpad.btns_d = wiibtns;
    pad.btns_d = gcbtns;
}

/**
 * Sets a button trigger. Requires:
 * - Trigger button is pressed
 * - Parent window is in focus
 */
void GuiTrigger::SetButtonOnlyInFocusTrigger(s32 ch, u32 wiibtns, u16 gcbtns)
{
    type = TRIGGER_BUTTON_ONLY_IN_FOCUS;
    chan = ch;
    wpad.btns_d = wiibtns;
    pad.btns_d = gcbtns;
}

/****************************************************************************
 * WPAD_Stick
 *
 * Get X/Y value from Wii Joystick (classic, nunchuk) input
 ***************************************************************************/

s8 GuiTrigger::WPAD_Stick(u8 right, int axis)
{
#ifdef HW_RVL

    float mag = 0.0;
    float ang = 0.0;

    switch ( wpad.exp.type )
    {
        case WPAD_EXP_NUNCHUK:
        case WPAD_EXP_GUITARHERO3:
        if ( right == 0 )
        {
            mag = wpad.exp.nunchuk.js.mag;
            ang = wpad.exp.nunchuk.js.ang;
        }
        break;

        case WPAD_EXP_CLASSIC:
        if ( right == 0 )
        {
            mag = wpad.exp.classic.ljs.mag;
            ang = wpad.exp.classic.ljs.ang;
        }
        else
        {
            mag = wpad.exp.classic.rjs.mag;
            ang = wpad.exp.classic.rjs.ang;
        }
        break;

        default:
        break;
    }

    /* calculate x/y value (angle need to be converted into radian) */
    if ( mag > 1.0 ) mag = 1.0;
    else if ( mag < -1.0 ) mag = -1.0;
    double val;

    if ( axis == 0 ) // x-axis
    val = mag * sin( ( PI * ang ) / 180.0f );
    else // y-axis
    val = mag * cos( ( PI * ang ) / 180.0f );

    return ( s8 )( val * 128.0f );

#else
    return 0;
#endif
}

bool GuiTrigger::Left()
{
    u32 wiibtn = WPAD_BUTTON_LEFT;
    if(wpad.exp.type == WPAD_EXP_CLASSIC)
        wiibtn = WPAD_CLASSIC_BUTTON_LEFT;

    if ((wpad.btns_d | wpad.btns_h) & wiibtn || (pad.btns_d | pad.btns_h)
            & PAD_BUTTON_LEFT || pad.stickX < -PADCAL || WPAD_Stick(0, 0) < -PADCAL)
    {
        if (wpad.btns_d & wiibtn || pad.btns_d & PAD_BUTTON_LEFT)
        {
            scrollDelay = SCROLL_INITIAL_DELAY; // reset scroll delay.
            return true;
        }
        else if (scrollDelay == 0)
        {
            scrollDelay = SCROLL_LOOP_DELAY;
            return true;
        }
        else
        {
            if (scrollDelay > 0) scrollDelay--;
        }
    }
    return false;
}

bool GuiTrigger::Right()
{
    u32 wiibtn = WPAD_BUTTON_RIGHT;
    if(wpad.exp.type == WPAD_EXP_CLASSIC)
        wiibtn = WPAD_CLASSIC_BUTTON_RIGHT;

    if ((wpad.btns_d | wpad.btns_h) & wiibtn || (pad.btns_d | pad.btns_h)
            & PAD_BUTTON_RIGHT || pad.stickX > PADCAL || WPAD_Stick(0, 0) > PADCAL)
    {
        if (wpad.btns_d & wiibtn || pad.btns_d & PAD_BUTTON_RIGHT)
        {
            scrollDelay = SCROLL_INITIAL_DELAY; // reset scroll delay.
            return true;
        }
        else if (scrollDelay == 0)
        {
            scrollDelay = SCROLL_LOOP_DELAY;
            return true;
        }
        else
        {
            if (scrollDelay > 0) scrollDelay--;
        }
    }
    return false;
}

bool GuiTrigger::Up()
{
    u32 wiibtn = WPAD_BUTTON_UP;
    if(wpad.exp.type == WPAD_EXP_CLASSIC)
        wiibtn = WPAD_CLASSIC_BUTTON_UP;

    if ((wpad.btns_d | wpad.btns_h) & wiibtn || (pad.btns_d | pad.btns_h) & PAD_BUTTON_UP
            || pad.stickY > PADCAL || WPAD_Stick(0, 1) > PADCAL)
    {
        if (wpad.btns_d & wiibtn || pad.btns_d & PAD_BUTTON_UP)
        {
            scrollDelay = SCROLL_INITIAL_DELAY; // reset scroll delay.
            return true;
        }
        else if (scrollDelay == 0)
        {
            scrollDelay = SCROLL_LOOP_DELAY;
            return true;
        }
        else
        {
            if (scrollDelay > 0) scrollDelay--;
        }
    }
    return false;
}

bool GuiTrigger::Down()
{
    u32 wiibtn = WPAD_BUTTON_DOWN;
    if(wpad.exp.type == WPAD_EXP_CLASSIC)
        wiibtn = WPAD_CLASSIC_BUTTON_DOWN;

    if ((wpad.btns_d | wpad.btns_h) & wiibtn || (pad.btns_d | pad.btns_h)
            & PAD_BUTTON_DOWN || pad.stickY < -PADCAL || WPAD_Stick(0, 1) < -PADCAL)
    {
        if (wpad.btns_d & wiibtn || pad.btns_d & PAD_BUTTON_DOWN)
        {
            scrollDelay = SCROLL_INITIAL_DELAY; // reset scroll delay.
            return true;
        }
        else if (scrollDelay == 0)
        {
            scrollDelay = SCROLL_LOOP_DELAY;
            return true;
        }
        else
        {
            if (scrollDelay > 0) scrollDelay--;
        }
    }
    return false;
}