Is it currently possible (or planned for the future) to edit particle system parameters like spawn rate/initial velocity at runtime?
Hi,
You can! You just need to expose the settings you want to edit runtime. To do it, go to your particle system, select the desired module like ‘Initial Velocity’ and set the ‘Dsitribution’ setting to ‘Vector Particle Parameter’. Then you have to specify a name for it, this is important for calling it later. Now go to any blueprint and search for the ‘Set Vector Parameter’ node, and make sure it is the one from the Particle System category. You might need to disable context sensitivity to see it. This node needs a reference to your particle system, the name of the parameter you want to edit (the one you have set previously) and a vector of course.
I hope this helps you a bit.