source: advance-wars/src/com/medievaltech/advancewars/Map.java

package com.medievaltech.advancewars;

import java.io.*;

import android.graphics.*;

import com.medievaltech.unit.Unit;

public class Map {
        private Tile[][] grid;
        public Point offset;
        
        public Map(int width, int height, Point offset) {
                grid = new Tile[width][height];
                this.offset = offset;
        }
        
        public Map(Tile t, int width, int height, Point offset) {
                grid = new Tile[width][height];
                this.offset = offset;
                
                for(int x=0; x<getWidth(); x++)
                        for(int y=0; y<getHeight(); y++)
                                grid[x][y] = new Tile(t, new Point(x, y));
        }
        
        public int getWidth() {
                return grid.length;
        }
        
        public int getHeight() {
                return grid[0].length;
        }
        
        public Tile getTile(int x, int y) {
                return grid[x][y];
        }
        
        public Tile getTile(Point point) {
                return grid[point.x][point.y];
        }
        
        public void setTile(int x, int y, Tile t) {
                grid[x][y] = t;
        }
        
        public void save(PrintWriter p) {
                p.println(getWidth());
                p.println(getHeight());
                p.println(offset.x+"x"+offset.y);
                
                for(int x=0; x<getWidth(); x++) {
                        p.print(grid[x][0].type.ordinal());
                        for(int y=1; y<getHeight(); y++)
                                p.print(","+grid[x][y].type.ordinal());
                        p.println();
                }
                
                for(int x=0; x<getWidth(); x++) {
                        for(int y=1; y<getHeight(); y++) {
                                if(grid[x][y].currentUnit != null) {
                                        Unit u = grid[x][y].currentUnit;
                                        //p.println(u.type);
                                        //we also need to save the owner of the unit
                                        p.println(u.location.x+","+u.location.y);
                                }
                        }
                }
        }
        
        public void draw(Canvas c) {
                for(int x=0; x<getWidth(); x++)
                        for(int y=0; y<getHeight(); y++)
                                grid[x][y].draw(c, offset.x+50*x, offset.y+50*y);
        }
        
        public void drawUnits(Canvas c) {
                for(int x=0; x<getWidth(); x++)
                        for(int y=0; y<getHeight(); y++)
                                grid[x][y].drawUnit(c, offset.x+50*x, offset.y+50*y);
        }
        
        public void drawBuildings(Canvas c) {
                for(int x=0; x<getWidth(); x++)
                        for(int y=0; y<getHeight(); y++)
                                grid[x][y].drawBuilding(c, offset.x+50*x, offset.y+50*y);
        }
}