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[sevn]

I'm making a little asteroids style game in C# Xna. Any suggestions for how to do the asteroids? At the moment this is what I'm doing to draw the asteroids.



Theres got to be a better way though. Probably a procedurally generated way too.

[1982]

Original Asteroids had calculated vector graphics, so if you want to really imitate that style you would have to do it like that. Then again, I don't see nothing wrong with your current approach. It is not very difficult or time consuming just to draw white lines on black background. You could write procedural graphic engine too, considering these types of graphics it might not be so difficult.

[TomHunt]

Yeah, pretty much what you're doing, but do it with code.

You can get some pretty decent looking asteroids by drawing lines between points at a random radius from the center from the asteroid at points evenly distributed around the center.

so, roughly:

Code:

float theta_inc=360.0f/num_points;
float theta=0;
for (int i=0; i<num_points; ++i){
   float radius= min_radius + (float)rand()/((float)RAND_MAX/(max_radius-min_radius));
   points[i].x=radius*cos(theta);
   points[i].y=radius*sin(theta);
   theta+=theta_inc;
}