added map drawing system

src/de/miaurizius/jgame2d/tile/TileManager.java

@@ -4,18 +4,20 @@ import de.miaurizius.jgame2d.core.GamePanel;
 
 import javax.imageio.ImageIO;
 import java.awt.*;
-import java.io.FileInputStream;
-import java.io.IOException;
+import java.io.*;
 
 public class TileManager {
 
     GamePanel panel;
     Tile[] tile;
+    int[][] mapTileNum;
 
     public TileManager(GamePanel panel) {
         this.panel = panel;
         tile = new Tile[10];
+        mapTileNum = new int[panel.maxScreenCol][panel.maxScreenRow];
         getTileImage();
+        loadMap("testmap");
     }
 
     public void getTileImage() {
@@ -27,17 +29,55 @@ public class TileManager {
             tile[1].image = ImageIO.read(new FileInputStream("assets/tiles/wall.png"));
 
             tile[2] = new Tile();
-            tile[2].image = ImageIO.read(new FileInputStream("assets/tiles/grass.png"));
-
-            tile[3] = new Tile();
-            tile[3].image = ImageIO.read(new FileInputStream("assets/tiles/water.png"));
+            tile[2].image = ImageIO.read(new FileInputStream("assets/tiles/water.png"));
         } catch (IOException e) {
             e.printStackTrace();
         }
     }
 
+    public void loadMap(String map) {
+        try {
+            InputStream stream = new FileInputStream("assets/maps/"+map+".map");
+            BufferedReader bReader = new BufferedReader(new InputStreamReader(stream));
+            int col = 0;
+            int row = 0;
+            while(col < panel.maxScreenCol && row < panel.maxScreenRow) {
+                String line = bReader.readLine();
+                while(col < panel.maxScreenCol) {
+                    String[] numbers = line.split(" ");
+                    int num = Integer.parseInt(numbers[col]);
+                    mapTileNum[col][row] = num;
+                    col++;
+                }
+                if(col == panel.maxScreenCol) {
+                    col = 0;
+                    row++;
+                }
+            }
+            bReader.close();
+        } catch(Exception e) {
+            e.printStackTrace();
+        }
+    }
+
     public void draw(Graphics2D graphics2D) {
-        graphics2D.drawImage(tile[0].image, 0, 0, panel.tileSize, panel.tileSize, null);
+        int col = 0;
+        int row = 0;
+        int x = 0;
+        int y = 0;
+
+        while(col < panel.maxScreenCol && row < panel.maxScreenRow) {
+            int tileNum = mapTileNum[col][row];
+            graphics2D.drawImage(tile[tileNum].image, x, y, panel.tileSize, panel.tileSize, null);
+            col++;
+            x += panel.tileSize;
+            if(col == panel.maxScreenCol) {
+                col = 0;
+                x = 0;
+                row++;
+                y += panel.tileSize;
+            }
+        }
     }
 
 }