path.h

VIGASOCO (VIdeo GAmes SOurce COde) Windows port (v0.01)

// Path.h
//
//	Class with all path related methods
//
/////////////////////////////////////////////////////////////////////////////

#ifndef _PATH_H_
#define _PATH_H_


// this enumeration allows changing orientation easily with a xor 2
enum Orientation {
	RIGHT = 0,
	DOWN = 1,
	LEFT = 2,
	UP = 3
};

// this table has the (x, y) offsets for a move in any orientation
extern int movementOffsets[4][2];

class Path 
{
// methods
public:
	// calculates the square of the distance between 2 points
	static int distance2(int p1X, int p1Y, int p2X, int p2Y);

	// calculates the best path between two points, given an orientation
	static void calcPath(int sourceX, int sourceY, Orientation ori, int destX, int destY,
				int &movOffsX, int &movOffsY, Orientation &finalOri);

	// calculates a random path, given a point and an orientation
	static void calcRandomPath(int sourceX, int sourceY, Orientation ori,
				int &movOffsX, int &movOffsY, Orientation &finalOri);
};

#endif	// _PATH_H_