#include <stdio.h>#include <stdlib.h>#include <allegro.h>#define NUM_TILES 10		// number of tiles in the datafile#define TILE_SIZE 32		// tile size#define MAP_SIZE 14			// size of the mapDATAFILE *datTiles;			// tiles graphicsunsigned char map[MAP_SIZE][MAP_SIZE];	// map dataint currentTile;			// current tile used to draw/*********************************************************************************** *  Just zero out all the entries in 2D array which holds map values *	Call this function to create new map */void newMap(void){    int i, j;    for (i=0; i<MAP_SIZE; i++)        for (j=0; j<MAP_SIZE; j++)            map[j] = 0;}/*********************************************************************************** * saves a map to file named: filename * */void saveMap(char* filename){    FILE *file;	// open the file in write binary mode    file = fopen(filename, "wb");    if (!file)        return;	// write the map data    fwrite(map, sizeof(unsigned char), MAP_SIZE*MAP_SIZE, file);	// never forget to close the file    fclose(file);}/*********************************************************************************** * load a map from file: filename * */void loadMap(char* filename){    FILE *file;	// open file in read binary mode    file = fopen(filename, "rb");    if (!file)        return;	// read map data    fread(map, sizeof(unsigned char), MAP_SIZE*MAP_SIZE, file);    fclose(file);}/*********************************************************************************** * Draw a map to the screen * using map 2D array * */void drawMap(void){    int i, j;	// loop counters	int tile;		// hide the mouse	show_mouse(NULL);	// iterate through map data    for (i=0; i<MAP_SIZE; i++) {        for (j=0; j<MAP_SIZE; j++) {			tile = map[j];			// if tile is there draw it            if (tile > 0)				draw_sprite(screen, (BITMAP*)datTiles[tile].dat, i*TILE_SIZE, j*TILE_SIZE);			// else just draw black rectangle			else				rectfill(screen, i*TILE_SIZE, j*TILE_SIZE, i*TILE_SIZE+TILE_SIZE, j*TILE_SIZE+TILE_SIZE, 0); 		}	}	// show mouse again	show_mouse(screen);}/*********************************************************************************** * if map area was clicked put tile there * using currentTile  * */void mapClicked(void){	int tile;	// tile to be drawn	int tileX;	// tile in x direction to draw onto	int tileY;	// tile in y direction to draw onto	// if no mouse button pressed exit function	if (!mouse_b)		return;    // if mouse was clicked outside the map area exit function    if (mouse_x >= TILE_SIZE*MAP_SIZE || mouse_y >= TILE_SIZE*MAP_SIZE)        return;	// if left button pressed draw the tile	if (mouse_b & 1)		tile = currentTile;	// else erase tiles	else 		tile = 0;    tileX = mouse_x  / TILE_SIZE;    // x tile clicked    tileY = mouse_y  / TILE_SIZE;    // y tile clicked    map[tileX][tileY] = tile;    // assign the value of the map to tile	// and redraw the map    drawMap();}/*********************************************************************************** * initialize editor. Load datafile with tiles and create new map * */void initEditor(void) {	currentTile = 1;	// we start with tile #1 being drawn	// now load the datafile	datTiles = load_datafile("eddat.dat");	// if can't load datafile, give error message	if (!datTiles) {		printf("Error loading eddat.dat\n");		exit(-1);	}		newMap();	// create a new map}/*********************************************************************************** * Start message loop which checks * for keypresses that control editor and mouse clicked for drawing * */void startEditor(void){	// draw initial map	drawMap();   while (1) {        mapClicked();    // check if map was clicked        // keys 1 to 0 change the currently used tile        if (key[KEY_1]) currentTile = 1;        else if (key[KEY_2]) currentTile = 2;		else if (key[KEY_3]) currentTile = 3;		else if (key[KEY_4]) currentTile = 4;		else if (key[KEY_5]) currentTile = 5;		else if (key[KEY_6]) currentTile = 6;		else if (key[KEY_7]) currentTile = 7;		else if (key[KEY_8]) currentTile = 8;                else if (key[KEY_9]) currentTile = 9;        else if (key[KEY_0]) currentTile = 10;        // F1 pressed new map        else if (key[KEY_F1]) {            newMap();            drawMap();        }        // F2 pressed save map        else if (key[KEY_F2]) {            saveMap("map1.map");            drawMap();        }        // F3 pressed load map        else if (key[KEY_F3]) {            loadMap("map1.map");			drawMap();		}        // ESC pressed exit program        else if (key[KEY_ESC])            break;    }}/***********************************************************************************/int main(int argc, char** argv){	allegro_init();	// initialize editor	initEditor();	// we are going to use 640x480 graphics mode    set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);	// install timer, mouse and keyboard    install_timer();    install_mouse();    install_keyboard();	// clear the screen to background color	clear(screen);    // make sure 0th entry in datafile is pallete    set_pallete((RGB*)datTiles[0].dat);	// display the mouse    show_mouse(screen);	// start processing events	startEditor();	exit(0);	// succesfully exit}