Recent content by Joe390

  1. J

    Mastering Parabolic Motion in Online Games: Understanding Physics and Gravity

    Now I think I get it. With a large time step energy is not conserved. If the time step is decreased, and approaches 0 seconds then is energy conservation maintained?
  2. J

    Mastering Parabolic Motion in Online Games: Understanding Physics and Gravity

    This is great thanks. I didn't realize that air resistance is proportional to (v-vwind)^2. For some reason I was under the impression that air resistance is proportional to k*v where k is a constant. Would you recommend 4th order Runge-Kutta to solve these iterations. In what way do those...
  3. J

    Mastering Parabolic Motion in Online Games: Understanding Physics and Gravity

    So if y = 5t - 5t^2 the differential equation is dy/dt = 5 - 10t. How do I account for air resistance and wind blowing. The horizontal wind error sounds like something that definitely might happen if I approach the problem this way. Is there a better way maybe? Because Robot Unicorn Attack and...
  4. J

    Mastering Parabolic Motion in Online Games: Understanding Physics and Gravity

    I've been trying to make an online game using the rules of physics. If I'm not mistaken this flash game uses Newtonian physics by generating a vertical parabola to simulate gravity. I also realize that acceleration in the x direction can occur. Are there any other sort of kinematic principles I...
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