/titania/Work/C/BlitzzEngine/include/beng/Array2d.h

Go to the documentation of this file.

/*
Copyright (c) 2009, Dan Hagerstrand and contributors
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

* Redistributions of source code must retain the above copyright notice,
  this list of conditions and the following disclaimer.

* Redistributions in binary form must reproduce the above copyright notice,
  this list of conditions and the following disclaimer in the documentation
  and/or other materials provided with the distribution.

* Neither the name of Cirrus Creative nor the names of its
  contributors may be used to endorse or promote products derived from this
  software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef BENG_ARRAY2D_H
#define BENG_ARRAY2D_H

#include <cstdlib>


template <typename T>
class BengArray2D {

    protected:

    unsigned int sizeX;
    unsigned int sizeY;
    T *tileMap;
    T **tileRows;

    public:

    BengArray2D(unsigned int xsize, unsigned int ysize)
    {
        this->sizeX = xsize;
        this->sizeY = ysize;
        this->tileMap = NULL;
        this->tileRows = NULL;

        // Allocate space for the actual array
        this->tileMap = (T*)calloc(ysize * xsize, sizeof(T));
        if (this->tileMap == NULL)
            abort();
            //return;
            //this->scene_->system_->giveError(BENG_ERROR_FATAL,
            //"Could not allocate tilemap for the scene layer!\nYou may be out of memory!");

        // Allocate row pointers to transform the contiguous space into a 2D array
        this->tileRows = (T**)malloc(xsize * sizeof(T*));
        if (this->tileRows == NULL)
            abort();
            //return;
            //this->scene_->system_->giveError(BENG_ERROR_FATAL,
            //"Could not allocate tile rows for the scene layer!\nYou may be out of memory!");

        // Adjust the pointers to go to each row.
        for (unsigned int i = 0; i < xsize; i++)
        {
            this->tileRows[i] = this->tileMap + (i * ysize);
        }
    }
    ~BengArray2D(void)
    {
        if (this->tileRows)
            free(this->tileRows);
        if (this->tileMap)
            free(this->tileMap);
    }

    void getSize(unsigned int &xOut, unsigned int &yOut)
    {
        xOut = this->sizeX;
        yOut = this->sizeY;
    }

    void setElement(unsigned int xIn, unsigned int yIn, T data)
    {
        if (xIn >= 0 && xIn < this->sizeX && yIn >= 0 && yIn < this->sizeY)
            this->tileRows_[yIn][xIn] = data;
    }

    T getElement(unsigned int xIn, unsigned int yIn)
    {
        if (xIn >= 0 && xIn < this->sizeX && yIn >= 0 && yIn < this->sizeY)
            return this->tileRows_[yIn][xIn];
        else
            return 0;
    }

    T **getRawData(void)
    {
        return this->tileRows;
    }


};

#endif

---