4 #include "../dpdefs/csprogsdefs.qh"
10 class(Noise) .float noise_baccum;
11 class(Noise) .float noise_paccum;
12 class(Noise) .float noise_paccum2;
13 class(Noise) .float noise_paccum3;
14 class(Noise) .float noise_bstate;
16 float Noise_Brown(entity e, float dt)
18 e.noise_baccum += random() * sqrt(dt); // same stddev for all dt
19 return e.noise_baccum;
21 float Noise_Pink(entity e, float dt)
25 // http://home.earthlink.net/~ltrammell/tech/pinkalg.htm
26 if(random() > pow(0.3190, f))
27 e.noise_paccum = 0.34848 * (2 * random() - 1);
28 if(random() > pow(0.7756, f))
29 e.noise_paccum2 = 0.28768 * (2 * random() - 1);
30 if(random() > pow(0.9613, f))
31 e.noise_paccum3 = 0.43488 * (2 * random() - 1);
32 return e.noise_paccum + e.noise_paccum2 + e.noise_paccum3;
34 float Noise_White(entity e, float dt)
36 return random() * 2 - 1;
38 float Noise_Burst(entity e, float dt, float p)
40 if(random() > pow(p, dt))
41 e.noise_bstate = !e.noise_bstate;
42 return 2 * e.noise_bstate - 1;