This takes the base direction set with SetDirection and adjusts it by a random amount between 0 and Angle/2 radians. For example an angle of 0 would mean that all new particles follow exactly the direction specified earlier. An angle of 2*Pi would mean that particles could appear travelling in any direction, and an angle of Pi/2 would mean that particles would travel outward in a cone of Pi/2 radians from their start position with the cone centered on the given direction.

TAgkParticleEmitter Properties