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pygame / include / pgDeclare.h

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#ifndef _PG_DECLARE_H
#define _PG_DECLARE_H

//forward declaration of structures used by multiple .h files
//to resolve circular dependency

typedef struct _pgBodyObject pgBodyObject;
typedef struct _pgShapeObject pgShapeObject;
typedef struct _pgJointObject pgJointObject;
typedef struct _pgWorldObject pgWorldObject;

#endif