Category : C Source Code
Archive   : TCPPTECH.ZIP
Filename : CREATURE.H

// ECOSYSTEM SIMULATION PROGRAM
// creature.h 2.00 07-Aug-1990
// Borland Turbo C++ 1.0
//
// Creature class definition
//
// Written by Scott Robert Ladd

#if !defined(CREATURE_H)
#define CREATURE_H

#include "lbitgrid.h"

enum MoveResult {MR_MOVED, MR_DIED, MR_REPRODUCED};
enum CreatureSpecies {CS_GRAZER, CS_SNIFFER, CS_ZIPPER};

class Creature
{
protected:
int Energy; // current energy level
int Age; // current age

int PosX, PosY; // position on screen

static int MaxX; // maximum X dimension for Grazer
static int MaxY; // maximum Y dimension for Grazer

static int Count; // current population of creatures

static LargeBitGrid * FoodSupply; // pointer to food supply for grazers

static const int MoveTable[8][2]; // class-global table of movements
static const int NoDirections; // number of possible movement directions

public:
// constructor
Creature(int e, int x, int y);

// destructor
virtual ~Creature();

// set food supply and area dimensions
static void SetRegion(LargeBitGrid * food, int xmax, int ymax);

// return population of creatures
static int Population()
{
return Count;
}

// get creature's species
virtual CreatureSpecies Species() = 0;

// ask creature to perform an action
virtual MoveResult Move() = 0;

// tell creature to draw itself
virtual void Draw() = 0;

// tell creature to erase itself
virtual void Erase() = 0;
};

#endif