/*
NOTE FOR SPELUNKERS: this requires linking to xinput1_4 AFAIK
*/

// Windows stuff starts //
typedef struct _XINPUT_VIBRATION {
    unsigned wLeftMotorSpeed;
    unsigned wRightMotorSpeed;
} XINPUT_VIBRATION;
unsigned int XInputSetState(unsigned int dwUserIndex, XINPUT_VIBRATION *pVibration);
// Windows stuff ends //

static fx32 timer = 0;

void set_rumble(f32 duration, f32 strength)
{
	// If game code is surpassing this something is wrong!!
	assert(strength >= 0.f && strength <= 1.f);
	
	XINPUT_VIBRATION state = {};
    state.wLeftMotorSpeed  = (unsigned)(strength * 65535.0f);
    state.wRightMotorSpeed = (unsigned)(strength * 65535.0f);

    if (XInputSetState(0, &state) == 0){
        timer = FP_TO_FIXED(duration);
    }
}

void stop_rumble(void)
{
	timer = 0;
	
	XINPUT_VIBRATION state = {};
    state.wLeftMotorSpeed  = 0;
    state.wRightMotorSpeed = 0;
	XInputSetState(0, &state);
}

void poll_rumble(f32 dt)
{
	// Early return
	if(timer <= 0)
		return;
		
	fx32 delta = FP_TO_FIXED(dt);
	
	timer -= delta;
	if(timer <= 0){
		stop_rumble();
	}
}