deserializing/networking - request to add velocityData* to group-definition about liquidfun HOT 1 OPEN

When you create a b2ParticleGroup using b2ParticleGroupDef, the velocities
are set with the 'linearVelocity and angularVelocity parameters. Please
see the code below.

int32 b2ParticleSystem::CreateParticleForGroup(
const b2ParticleGroupDef& groupDef, const b2Transform& xf, const b2Vec2&
p)
{
b2ParticleDef particleDef;
particleDef.flags = groupDef.flags;
particleDef.position = b2Mul(xf, p);

• particleDef.velocity =*
• groupDef.linearVelocity +*
• b2Cross(groupDef.angularVelocity,*

•    particleDef.position - groupDef.position);*
  

  particleDef.color = groupDef.color;
  particleDef.lifetime = groupDef.lifetime;
  particleDef.userData = groupDef.userData;
  return CreateParticle(particleDef);
  }

But your request seems reasonable. Maybe we can add an (optional)
const b2Vec2* velocityData
to b2ParticleGroupDef. If velocityData is not NULL, we can use
velocityData[i] instead of linearVelocity and angularVelocity.

I'd be interested in getting a pull request for this. It seems like a good
idea.

Thanks!
Jason

from liquidfun.