gelArmature.h

Go to the documentation of this file.

/*
Gel2D Game Engine - Cross-platform 2D gaming middleware
Copyright (C) 2010-2011 Mark D. Procarione

Gel2D is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

Gel2D is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
*/

#ifndef __GELARMATURE_H__
#define __GELARMATURE_H__

#include "gelObject.h"
#include "gelString.h"

#define GEL2D_BONESYS_HEADER "GEL2D_BONESYS_v0.1"

#define GEL_MAX_BONES 64
#define GEL_MAX_BONE_CHILDREN 8


// Notes on bone system design:
// Meshes will be oblivious to armature's existence, except maybe for parenting.
// Bones will hold pointers to vertices and extra vertex data (weights, etc.), and manipulate accordingly.
// Bones should probably store their own matrices, to keep things fast and sweet.

namespace gel
{


        class GelBone
        {
                public:
            GelBone();

            GelBone *getParent() { return parent; }
            void setParent(     GelBone *par ) { parent = par; }

            void addChild( GelBone *child );
            GelBone *getChild( int index );

            void setPos( Gel2dVec bpos ) { pos = bpos; }
            float getAngle() { return angle; }
            void setAngle( float bangle ) { angle = bangle; }
            float getLength() { return length; }
            void setLength( float blength ) { length = blength; }

            void setName( GelString strname ) { name = strname; }

            int getPosMode() { return posMode; }
            void setPosMode( int mode ) { posMode = mode; }

            int hasParent();
            int hasChildren();

            void drawBoneAbsolute();
            void drawBoneRelative();

        private:
                        Gel2dVec pos;
                        float angle;
                        float length;

                        GelBone *parent;
                        GelBone *child[GEL_MAX_BONE_CHILDREN];
                        GelString name;

                        int childCount;
                        int posMode;
        };


    class GelArmature : public GelObject
    {
        public:
            GelArmature();


            GelArmature( const char *desc_name );


            GelArmature( Gel2dVec obj_pos, float obj_rot, Gel2dVec obj_scl );


            void addBone( GelBone *parent = NULL, const char *name = "Bone");


            void writeDesc( const char *filename );


            int readDesc( const char *filename );

            void render();

        private:
                        int boneCount;

                public:
                        GelBone bone[GEL_MAX_BONES];
    };

}

#endif