OrdinaryMagician/vkdoom_m
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Added stubs and helper functions

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This commit is contained in:
Marcus Minhorst 2025-07-07 17:46:19 -04:00 • committed by Ricardo Luís Vaz Silva
commit 92e66479fc
7 changed files with 443 additions and 20 deletions
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68
src/common/engine/m_joy.cpp
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@ -278,6 +278,48 @@ double Joy_RemoveDeadZone(double axisval, double deadzone, uint8_t *buttons)
return axisval;
}
//===========================================================================
//
// Joy_ApplyResponseCurveBezier
//
// Applies cubic bezier easing function
// Curve is defined by control points [(0,0) (x1,y1) (x2,y2) (1,1)]
// https://developer.mozilla.org/en-US/docs/Web/CSS/easing-function/cubic-bezier
//
//===========================================================================
double Joy_ApplyResponseCurveBezier(const CubicBezier &curve, double input)
{
// clamp + trivial cases
if (input == 0) return 0;
double sign = (input >= 0)? 1.0: -1.0;
input = abs(input);
input = (input > 1.0)? 1.0: input;
if (input == 1.0) return sign*input;
double t = input, T;
float x1 = curve.x1, y1 = curve.y1, x2 = curve.x2, y2 = curve.y2;
const int max_iter = 4;
for (auto i = 0; i < max_iter; i++)
{
T = 1-t;
double x = 3*T*T*t*x1 + 3*T*t*t*x2 + t*t*t;
double dx = 3*T*T*x1 + 6*T*t*(x2-x1) + 3*t*t*(1-x2);
// no div by 0
if (abs(dx) < 0.00001) break;
t = clamp(t - (x-input)/dx, 0.0, 1.0);
}
T = 1-t;
t = 3*T*T*t*y1 + 3*T*t*t*y2 + t*t*t;
return sign*t;
}
//===========================================================================
//
// Joy_XYAxesToButtons
@ -315,6 +357,22 @@ int Joy_XYAxesToButtons(double x, double y)
return JoyAngleButtons[int(rad) & 7];
}
//===========================================================================
//
// Joy_GenerateButtonEvent
//
// Send either a button up or button down event for supplied key code
//
//===========================================================================
void Joy_GenerateButtonEvent(bool down, EKeyCodes which)
{
event_t event = { 0,0,0,0,0,0,0 };
event.type = down ? EV_KeyDown : EV_KeyUp;
event.data1 = which;
D_PostEvent(&event);
}
//===========================================================================
//
// Joy_GenerateButtonEvents
@ -330,15 +388,12 @@ void Joy_GenerateButtonEvents(int oldbuttons, int newbuttons, int numbuttons, in
int changed = oldbuttons ^ newbuttons;
if (changed != 0)
{
event_t ev = { 0, 0, 0, 0, 0, 0, 0 };
int mask = 1;
for (int j = 0; j < numbuttons; mask <<= 1, ++j)
{
if (changed & mask)
{
ev.data1 = base + j;
ev.type = (newbuttons & mask) ? EV_KeyDown : EV_KeyUp;
D_PostEvent(&ev);
Joy_GenerateButtonEvent(newbuttons & mask, static_cast<EKeyCodes>(base + j));
}
}
}
@ -349,15 +404,12 @@ void Joy_GenerateButtonEvents(int oldbuttons, int newbuttons, int numbuttons, co
int changed = oldbuttons ^ newbuttons;
if (changed != 0)
{
event_t ev = { 0, 0, 0, 0, 0, 0, 0 };
int mask = 1;
for (int j = 0; j < numbuttons; mask <<= 1, ++j)
{
if (changed & mask)
{
ev.data1 = keys[j];
ev.type = (newbuttons & mask) ? EV_KeyDown : EV_KeyUp;
D_PostEvent(&ev);
Joy_GenerateButtonEvent(newbuttons & mask, static_cast<EKeyCodes>(keys[j]));
}
}
}