map.h

游戏开发数据结构Data Structures for Game Programmers

// ============================================================================
// Map.h
// Contains the map base class
// ============================================================================

#ifndef MAP_H
#define MAP_H


#include "Array2D.h"
#include "Array3D.h"
#include "Item.h"
#include "Person.h"
#include <string.h>


// ============================================================================
//  Map Class
// ============================================================================
class Map
{
protected:
// =======================================================
//  Data
// =======================================================

// -------------------------------------------------------
// Name:        m_viewer
// Description: The person that the map is currently
//              being viewed by.
// -------------------------------------------------------
    Person* m_viewer;

// -------------------------------------------------------
// Name:        m_exits
// Description: array of strings containing information
//              about the exits in the level.
// -------------------------------------------------------
    char m_exits[3][64];

public:
// =======================================================
//  Functions
// =======================================================
   
// -------------------------------------------------------
// Name:        Map
// Description: Constructs the map
// -------------------------------------------------------
    Map()
    {
        m_viewer = 0;

        // clear the exit strings
        strcpy( m_exits[0], "" );
        strcpy( m_exits[1], "" );
        strcpy( m_exits[2], "" );
    }

// -------------------------------------------------------
// Name:        GetViewer
// Description: returns a pointer to the viewer
// -------------------------------------------------------
    Person* GetViewer()
    {
        return m_viewer;
    }

// -------------------------------------------------------
// Name:        SetViewer
// Description: Sets the viewer of the map
// -------------------------------------------------------
    void SetViewer( Person* p_viewer )
    {
        m_viewer = p_viewer;
    }

// -------------------------------------------------------
// Name:        GetExitName
// Description: Gets the name of the given exit
// -------------------------------------------------------
    char* GetExitName( int p_exit )
    {
        return m_exits[p_exit];
    }

// =======================================================
//  Virtual Functions
// =======================================================

// -------------------------------------------------------
// Name:        Draw
// Description: Draws the map onto the given surface, 
//              using the viewers coordinates as the
//              midpoint of the screen.
// -------------------------------------------------------
    virtual void Draw( SDL_Surface* p_surface,
                       int p_midx, int p_midy ) = 0;

// -------------------------------------------------------
// Name:        CanMove
// Description: Determines if the given person can move
//              in the given direction
// -------------------------------------------------------
    virtual bool CanMove( Person* p_person, int p_direction ) = 0;

// -------------------------------------------------------
// Name:        Move
// Description: Moves the given person in the given
//              direction
// -------------------------------------------------------
    virtual void Move( Person* p_object, int p_direction ) = 0;

// -------------------------------------------------------
// Name:        GetItem
// Description: Gets a pointer to the item in the given
//              cell
// -------------------------------------------------------
    virtual Item* GetItem( int p_cell ) = 0;

// -------------------------------------------------------
// Name:        SetItem
// Description: Sets the item in the given cell.
// -------------------------------------------------------
    virtual void SetItem( int p_cell, Item* p_item ) = 0;


// -------------------------------------------------------
// Name:        GetPerson
// Description: Gets a pointer to the person in the given
//              cell
// -------------------------------------------------------
    virtual Person* GetPerson( int p_cell ) = 0;

// -------------------------------------------------------
// Name:        SetPerson
// Description: sets the person in the given cell.
// -------------------------------------------------------
    virtual void SetPerson( int p_cell, Person* p_person ) = 0;


// -------------------------------------------------------
// Name:        GetCellNumber
// Description: Gets the number of the cell in the
//              given direction
// -------------------------------------------------------
    virtual int GetCellNumber( int p_cell, int p_direction ) = 0;

// -------------------------------------------------------
// Name:        GetNumberOfCells
// Description: Gets the number of cells in the map
// -------------------------------------------------------
    virtual int GetNumberOfCells() = 0;

// -------------------------------------------------------
// Name:        GetClosestDirection
// Description: Gets the direction that will move the
//              first person closer to the second person.
// -------------------------------------------------------
    virtual int GetClosestDirection( Person* p_one, Person* p_two ) = 0;

};




#endif