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new joystick math

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dborth 2012-01-27 02:34:43 +00:00
parent 2c7c2cec04
commit 6cb97df316
1 changed files with 14 additions and 65 deletions
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77
source/input.cpp
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@ -382,7 +382,8 @@ static void UpdateCursorPosition (int chan, int &pos_x, int &pos_y)
static void decodepad (int chan) static void decodepad (int chan)
{ {
int i, offset; int i, offset;
float t; double angle;
static const double THRES = 1.0 / sqrt(2.0);
s8 pad_x = userInput[chan].pad.stickX; s8 pad_x = userInput[chan].pad.stickX;
s8 pad_y = userInput[chan].pad.stickY; s8 pad_y = userInput[chan].pad.stickY;
@ -404,38 +405,16 @@ static void decodepad (int chan)
// Is XY inside the "zone"? // Is XY inside the "zone"?
if (pad_x * pad_x + pad_y * pad_y > PADCAL * PADCAL) if (pad_x * pad_x + pad_y * pad_y > PADCAL * PADCAL)
{ {
/*** we don't want division by zero ***/ angle = atan2(pad_y, pad_x);
if (pad_x > 0 && pad_y == 0)
if(cos(angle) > THRES)
jp |= PAD_BUTTON_RIGHT; jp |= PAD_BUTTON_RIGHT;
if (pad_x < 0 && pad_y == 0) else if(cos(angle) < -THRES)
jp |= PAD_BUTTON_LEFT; jp |= PAD_BUTTON_LEFT;
if (pad_x == 0 && pad_y > 0) if(sin(angle) > THRES)
jp |= PAD_BUTTON_UP; jp |= PAD_BUTTON_UP;
if (pad_x == 0 && pad_y < 0) else if(sin(angle) < -THRES)
jp |= PAD_BUTTON_DOWN; jp |= PAD_BUTTON_DOWN;
if (pad_x != 0 && pad_y != 0)
{
/*** Recalc left / right ***/
t = (float) pad_y / pad_x;
if (t >= -2.41421356237 && t < 2.41421356237)
{
if (pad_x >= 0)
jp |= PAD_BUTTON_RIGHT;
else
jp |= PAD_BUTTON_LEFT;
}
/*** Recalc up / down ***/
t = (float) pad_x / pad_y;
if (t >= -2.41421356237 && t < 2.41421356237)
{
if (pad_y >= 0)
jp |= PAD_BUTTON_UP;
else
jp |= PAD_BUTTON_DOWN;
}
}
} }
#ifdef HW_RVL #ifdef HW_RVL
/*** /***
@ -444,46 +423,16 @@ static void decodepad (int chan)
// Is XY inside the "zone"? // Is XY inside the "zone"?
if (wm_ax * wm_ax + wm_ay * wm_ay > PADCAL * PADCAL) if (wm_ax * wm_ax + wm_ay * wm_ay > PADCAL * PADCAL)
{ {
angle = atan2(wm_ay, wm_ax);
if (wm_ax > 0 && wm_ay == 0) if(cos(angle) > THRES)
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_RIGHT : WPAD_BUTTON_RIGHT; wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_RIGHT : WPAD_BUTTON_RIGHT;
if (wm_ax < 0 && wm_ay == 0) else if(cos(angle) < -THRES)
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_LEFT : WPAD_BUTTON_LEFT; wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_LEFT : WPAD_BUTTON_LEFT;
if (wm_ax == 0 && wm_ay > 0) if(sin(angle) > THRES)
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_UP : WPAD_BUTTON_UP; wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_UP : WPAD_BUTTON_UP;
if (wm_ax == 0 && wm_ay < 0) else if(sin(angle) < -THRES)
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_DOWN : WPAD_BUTTON_DOWN; wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_DOWN : WPAD_BUTTON_DOWN;
if (wm_ax != 0 && wm_ay != 0)
{
/*** Recalc left / right ***/
t = (float) wm_ay / wm_ax;
if (t >= -2.41421356237 && t < 2.41421356237)
{
if (wm_ax >= 0)
{
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_RIGHT : WPAD_BUTTON_RIGHT;
}
else
{
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_LEFT : WPAD_BUTTON_LEFT;
}
}
/*** Recalc up / down ***/
t = (float) wm_ax / wm_ay;
if (t >= -2.41421356237 && t < 2.41421356237)
{
if (wm_ay >= 0)
{
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_UP : WPAD_BUTTON_UP;
}
else
{
wp |= (exp_type == WPAD_EXP_CLASSIC) ? WPAD_CLASSIC_BUTTON_DOWN : WPAD_BUTTON_DOWN;
}
}
}
} }
#endif #endif