#ifndef TRULLA_H
#define TRULLA_H

#include "window.h"
#include "tr2robot.h"

// Symbolic Constants

#define MAXWGT     15
#define OKAY       1
#define BADEXIT    1
#define OBSTACLE   'x'
#define TRUE       1
#define FALSE      0


// Function Prototypes

void Trulla(char *name);
void MoveLeft (Window *win);
void MoveRight (Window *win);
void MoveUp (Window *win);
void MoveDown (Window *win);
int DrawCurrentLocation ( Window *win, LOCATION * currLocInGridels );
void DrawPastMoves(Window* win);

/*
Function InitializeDisplay is used to initialize the graphics system
and variables needed to display the workspace grid.  Declare and set
variable showGrid (see below) to TRUE (1) then call this function if
you wish the workspace grid to display.  If you do not wish the
workspace grid to display, do not call this function; however, you
must still declare showGrid and set it to FALSE (0).
*/
void InitializeDisplay(Window *win);


/*
showGrid should be set to 1 to display the workspace grid.  It
should be set to 0 to prevent any workspace display.  If it is set to
1, you must be sure to call function InitializeDisplay afterwards.
*/
extern int showGrid;


/*
Gridel Structure

This structure contains the propagation values for a cell in the
workspace grid.  During the loading of the workspace file, an array
of this structure is allocated, one for each cell in the workspace
grid.
*/

typedef struct
{
	unsigned int vert_hist [2];
	int xloc;
	int yloc;
	int normal;     //	 char normal;
	float s_dist;
	float t_dist;
	int r_weight;
	int region;
	int delx;
	int dely;
	int xgoal;
	int ygoal;
} GRIDEL;

typedef struct MVstruct{
	float x;
	float y;
	struct MVstruct *next;
} MOVEMENT;

typedef struct {
	int nohits;
} OBST;

typedef struct {
	float x;
	float y;
} DOT;
#endif