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[Change] Made force feedback a little more sophisticated.

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This commit is contained in:
Allanis 2014-05-29 17:47:19 +01:00
parent 99dc05be86
commit 3f205ce9f0
1 changed files with 17 additions and 2 deletions
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19
src/spfx.c
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@ -22,6 +22,8 @@
#define SPFX_CHUNK 32 /**< Chunk to allocate when needed. */
#define SHAKE_VEL_MOD 0.0008 /**< Shake modifier. */
#define HAPTIC_UPDATE_INTERVAL 0.1 /**< Time between haptic updates. */
/* Special hardcoded effects.. */
/* Shake, AKA RUMBLE! */
@ -35,6 +37,7 @@ extern SDL_Haptic* haptic; /**< From joystick.c */
extern unsigned int haptic_query; /**< From joystick.c */
static int haptic_rumble = -1; /**< Haptic rumble effect ID. */
static SDL_HapticEffect haptic_rumbleEffect; /**< Haptic rumble effect. */
static double haptic_lastUpdate = 0.; /**< Timer to update haptic effect again. */
#endif
/**
@ -315,8 +318,14 @@ static void spfx_update_layer(SPFX* layer, int* nlayer, const double dt) {
void spfx_start(const double dt) {
GLdouble bx, by, x, y;
double inc;
#if SDL_VERSION_ATLEAST(1,3,0)
/* Decrement the haptic timer. */
if(haptic_lastUpdate > 0.)
haptic_lastUpdate -= dt;
#endif
if(shake_off == 1) return; /* Save the cycles. */
bx = SCREEN_W / 2;
by = SCREEN_H / 2;
@ -364,8 +373,7 @@ void spfx_shake(double mod) {
vect_pset(&shake_vel, SHAKE_VEL_MOD*shake_rad, RNGF() * 2. * M_PI);
/* Rumble if it wasn't rumbling before. */
if(shake_off == 1)
spfx_hapticRumble();
spfx_hapticRumble();
/* Notify that rumble is active. */
shake_off = 0;
@ -406,6 +414,10 @@ static void spfx_hapticRumble(void) {
SDL_HapticEffect* efx;
if(haptic_rumble >= 0) {
/* Not time to update yet. */
if(haptic_lastUpdate > 0.)
return;
/* Stop the effect if it was playing. */
SDL_HapticStopEffect(haptic, haptic_rumble);
@ -419,6 +431,9 @@ static void spfx_hapticRumble(void) {
/* Run the new effect. */
SDL_HapticRunEffect(haptic, haptic_rumble, 1);
/* Set timer again. */
haptic_lastUpdate = HAPTIC_UPDATE_INTERVAL;
}
#endif
}