Windows version: integrate with Visual C# | Unity Community. Unity intros and tutorials. Shaders & Graphical tips. Luce Digitale | Blog Video Games Development with Unity3D and Unreal Engine. Miscellany. Programming for fun: Aiming a projectile at a moving target. To hit a moving target by shooting a gun you have to lead it, aiming at the spot where the target will be when the bullet reaches it. In this article we consider three successively harder versions of this problem.
To simplify the math, express the target's position and velocity relative to the shooter's, so that the shooter is effectively stationary at the origin. Assume that the target moves in a straight line, if it is moving. Also assume no air drag. Motion without gravity Without gravity, bullets travel in a straight line at constant velocity. Variable definitions: Equation for the time when the target and bullet are equidistant from the shooter: Square both sides: Expand: Group terms by powers of t: Examine the equation above.
Code for solving this quadratic might look like this: double time_of_impact(double px, double py, double vx, double vy, double s){ double a = s * s - (vx * vx + vy * vy); double b = px * vx + py * vy; double c = px * px + py * py; double d = b*b + a*c; return t;}
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Graphics (2D): SpriteLib GPL: Static and animated sprites that are free for any use.Lost Garden free game graphics: Danc’s miraculously flexible game prototyping graphics for small worlds.Reiner’s Tilesets: Tilesets, sprites, and graphics mainly for isometric games Sound: Music: