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Passing pointer to struct

Started by Gibbon_99 Mar 30, 2004 at 9:28 PM 0 replies 1.6k views

Original Post

Mar 30, 2004 at 9:28 PM

Hi I have the following typedef struct { float posX; float posY; } _2dPoint; typedef struct { _2dPoint pos; float somethingelse; float anotherThing; } _wayPoint; extern _wayPoint *waypoints; waypoints = malloc(enough space to hold all the data) Q: How do I pass the waypoints pointer to a script, so that within the script I can access: waypoints.pos.posX Thanks very much.

WitchLord

Mar 31, 2004 at 6:36 AM

AngelScript doesn''t yet support the [] operator so I suggest you do the following:


_wayPoint *WayPoint(int index)
{
  if( index < 0 || index >= maxWayPoints )
  {
    GetActiveContext()->SetException("Out of bounds");
    return 0;
  }

  return waypoints[index];
}


engine->RegisterGlobalFunction("waypoint &WayPoint(int index)", asFUNCTION(WayPoint), asCALL_CDECL);

This will allow you to make the following statements in AngelScript:


int n = 10;
waypoint wp;
wp = WayPoint(n);
wp.pos.posX = WayPoint(n+1).pos.posX;
wp.pos.posY = WayPoint(n+2).pos.posY;
WayPoint(n) = wp;

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