Accessing C structures in Ruby

[Joe Van Dyk]

(I've already looked at Swig, btw. I'd like to do this one by hand.)

I have the following:

typedef struct {
double x;
double y;
double z;
} VelocityRecord;

typedef struct {
double x;
double y;
double z;
} PositionRecord;

typedef struct {
int id;
int type;
PositionRecord position;
VelocityRecord velocity;
} Player;

Player Players[10];


The number of Players is fixed ahead of time. I want to be able to
access that data from Ruby. Ideally, something like:

module Simulation
attr_accessor layers # Other stuff will be here
class Player
class VelocityRecord
attr_accessor :x, :y :z
end
class PositionRecord
attr_accessor :x, :y, :z
end
end
end