timing.isFixed

[angabriel]

Hi again

I found a little bug when you set the engine's timing.isFixed = true via the options. In this case, no bodies are moving anymore.

Runner.run
......
if (timing.isFixed) {
   // fixed timestep
   delta = timing.delta;
   correction = 1; // possible fix
}

Maybe you can reproduce this behavior and the possible fix helps.

[liabru]

Are you setting timing.isFixed = true after engine creation?
Try setting it at creation, unless there's a reason you need to set it after the fact?

[angabriel]

I am setting the fixed timing via an options object and pass that to the creator:

options = {
            positionIterations: 2,
            velocityIterations: 4,
            enableSleeping: true,
            render: {
              options: {
                height: 1000,
                width: 780
              }
            },
            timing: {
              isFixed: true
            }
        }
_engine = Matter.Engine.create($canvas[0], options)