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Make viewing with joystick framerate-independent

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otherwise looking around is faster with higher framerates, that sucks,
especially with unstable framerates (on RPi)
This commit is contained in:
Daniel Gibson 2017-12-02 18:54:26 +01:00
parent e429356bd3
commit c3d3e9fc76
1 changed files with 14 additions and 7 deletions
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21
src/backends/sdl/input.c
View file

@ -70,9 +70,9 @@ static int old_mouse_x, old_mouse_y;
static qboolean mlooking;
#if SDL_VERSION_ATLEAST(2, 0, 0)
static int joystick_yaw, joystick_pitch;
static int joystick_forwardmove, joystick_sidemove;
static int joystick_up;
static float joystick_yaw, joystick_pitch;
static float joystick_forwardmove, joystick_sidemove;
static float joystick_up;
static int back_button_id = -1;
static char last_hat = SDL_HAT_CENTERED;
static qboolean left_trigger = false;
@ -594,13 +594,14 @@ IN_Update(void)
if (strcmp(direction_type, "sidemove") == 0)
{
joystick_sidemove = axis_value * joy_sidesensitivity->value;
joystick_sidemove *= cl_sidespeed->value;
// We need to be twice faster because with joystic we run...
joystick_sidemove *= cl_sidespeed->value * 2.0f;
}
else if (strcmp(direction_type, "forwardmove") == 0)
{
joystick_forwardmove = axis_value * joy_forwardsensitivity->value;
// We need to be twice faster because with joystic we run...
joystick_forwardmove *= cl_forwardspeed->value * 2;
joystick_forwardmove *= cl_forwardspeed->value * 2.0f;
}
else if (strcmp(direction_type, "yaw") == 0)
{
@ -788,14 +789,20 @@ IN_Move(usercmd_t *cmd)
}
#if SDL_VERSION_ATLEAST(2, 0, 0)
// to make the the viewangles changes independent of framerate
// we need to scale with frametime (assuming the configured values are for 60hz)
// 1/32768 is to normalize the input values from SDL (they're between -32768 and 32768 and we want -1 to 1)
// (for movement this is not needed, as those are absolute values independent of framerate)
float joyViewFactor = (1.0f/32768.0f) * (cls.rframetime/0.01666f);
if (joystick_yaw)
{
cl.viewangles[YAW] -= (m_yaw->value * joystick_yaw) / 32768;
cl.viewangles[YAW] -= (m_yaw->value * joystick_yaw) * joyViewFactor;
}
if(joystick_pitch)
{
cl.viewangles[PITCH] += (m_pitch->value * joystick_pitch) / 32768;
cl.viewangles[PITCH] += (m_pitch->value * joystick_pitch) * joyViewFactor;
}
if (joystick_forwardmove)