Mysterious Mixture
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if ((r&0xFF) == PT_OIL)
{
float ax, ay;
parts[i].vy -= 0.1f;
parts[i].vy *= 0.5f;
parts[i].vx *= 0.5f;
ax = (parts[i].vx + parts[r>>8].vx)/2;
ay = (parts[i].vy + parts[r>>8].vy)/2;
parts[i].vx = ax;
parts[i].vy = ay;
parts[r>>8].vx = ax;
parts[r>>8].vy = ay;
}
That what you're lookin' for?
Basically, it means when soap comes into contact with oil, the soap particles upward velocity (vy) is set to go upwards. The speed is then averaged, and both particles given new velocities. -
Soap IRL actually neutralizes oil and makes it to where it breaks down. This looks exactly like what is going on in TPT.
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