outsource record Move

src/Bot.java

@@ -46,6 +46,7 @@ public abstract class Bot implements Runnable {
 
     protected void print(View view) {
         view.print();
+        System.out.println();
     }
 
     // Diese Methode ermittelt den nächsten Zug des Bots. Sie wird von der

src/EnemyBot.java

@@ -9,13 +9,16 @@ public class EnemyBot extends Bot {
 
     @Override
     protected char nextMove(View view) {
+        int size = view.width;
         String data = view.data
                 .replace('^', '*')
                 .replace('<', '*')
                 .replace('>', '*')
                 .replace('v', '*');
 
-        if (data.contains("*") && random.nextFloat() < 0.8)
+        char[][] grid = dataToGrid(data, size);
+
+        if (data.contains("*") && isInLineOfSight(grid))
             return 'f';
 
         return switch (random.nextInt(10)) {
@@ -29,4 +32,21 @@ public class EnemyBot extends Bot {
     @Override
     protected void print(View view) {
     }
+
+    protected char[][] dataToGrid(String data, int size) {
+        char[][] grid = new char[size][size];
+        for (int i = 0; i < data.length(); i++) {
+            grid[i % size][i / size] = data.charAt(i);
+        }
+        return grid;
+    }
+
+    protected boolean isInLineOfSight(char[][] grid) {
+        int size = grid.length;
+        for (int y = size / 2; y > 0; y--) {
+            if (grid[size / 2][y] == '*')
+                return true;
+        }
+        return false;
+    }
 }

src/EscapeBot.java

@@ -1,3 +1,5 @@
+import records.Move;
+
 import java.util.LinkedList;
 import java.util.Queue;
 
@@ -80,13 +82,13 @@ public class EscapeBot extends Bot {
 
         while (!queue.isEmpty()) {
             Move move = queue.poll();
-            if (move.x < 0 || move.x >= size || move.y < 0 || move.y >= size || visited[move.x][move.y]) continue;
-            visited[move.x][move.y] = true;
-            if (obstacles.contains("" + grid[move.x][move.y])) continue;
-            if (grid[move.x][move.y] == 'o') return move.direction;
+            if (move.x() < 0 || move.x() >= size || move.y() < 0 || move.y() >= size || visited[move.x()][move.y()]) continue;
+            visited[move.x()][move.y()] = true;
+            if (obstacles.contains("" + grid[move.x()][move.y()])) continue;
+            if (grid[move.x()][move.y()] == 'o') return move.direction();
 
             for (int[] direction : directions) {
-                queue.add(new Move(move.x + direction[0], move.y + direction[1], move.direction));
+                queue.add(new Move(move.x() + direction[0], move.y() + direction[1], move.direction()));
             }
         }
 
@@ -94,7 +96,4 @@ public class EscapeBot extends Bot {
         return safeMove(grid);
     }
 
-    protected record Move(int x, int y, char direction) {
-    }
-
 }

src/RumbleBot.java

@@ -1,18 +1,23 @@
+import records.Move;
+
 import java.util.LinkedList;
 import java.util.Queue;
+import java.util.Random;
 
 public class RumbleBot extends Bot {
     protected final static String obstacles = "~#X*";
-    protected final static String targets = "v^<>";
-    protected boolean offByOne = true;
-    protected int currentStepCount = 0;
+    protected final static String players = "v^<>";
+    protected final static String targets = players + "o";
+
+    protected Random random = new Random();
     protected int steps = 0;
 
     public static void main(String[] args) {
-        if(args.length == 0) {
+        if (args.length == 0) {
             String[] dummyArgs = {"localhost", "63187"};
-            Bot dummy = new EnemyBot(dummyArgs);
-            new Thread(dummy).start();
+            for (int i = 0; i < 5; i++) {
+                new Thread(new EnemyBot(dummyArgs)).start();
+            }
         }
 
         Bot bot = new RumbleBot(args);
@@ -25,18 +30,14 @@ public class RumbleBot extends Bot {
 
     @Override
     protected char nextMove(View view) {
-        System.out.println();
-
         int size = view.width;
         String data = view.data;
         char[][] grid = dataToGrid(data, size);
 
-        if (data.contains("v") || data.contains("^") || data.contains("<") || data.contains(">")) {
-            if (isInLineOfSight(grid)) {
-                return 'f';
-            } else {
-                return breadthFirstSearch(grid);
-            }
+        if (isInLineOfSight(grid)) {
+            return 'f';
+        } else if (data.contains("v") || data.contains("^") || data.contains("<") || data.contains(">")) {
+            return breadthFirstSearch(grid);
         } else {
             return walkAround(grid);
         }
@@ -45,71 +46,71 @@ public class RumbleBot extends Bot {
     protected char[][] dataToGrid(String data, int size) {
         char[][] grid = new char[size][size];
         for (int i = 0; i < data.length(); i++) {
-            grid[i % size][i / size] = data.charAt(i);
+            char c = data.charAt(i);
+            if (Character.isUpperCase(c) && c != 'X') c = 'A';
+            grid[i % size][i / size] = c;
         }
         return grid;
     }
 
     protected void markFiringLines(char[][] grid) {
+        int[][] dir = {{0, -1}, {0, 1}, {1, 0}, {-1, 0}};
         int size = grid.length;
+
         for (int x = 0; x < size; x++) {
             for (int y = 0; y < size; y++) {
+
                 switch (grid[x][y]) {
-                    case 'v' -> markLine(grid, x, y, 0, 1);
-                    case '^' -> markLine(grid, x, y, 0, -1);
-                    case '>' -> markLine(grid, x, y, 1, 0);
-                    case '<' -> markLine(grid, x, y, -1, 0);
+                    case '^' -> markLine(grid, x, y, dir[0], '*', false);
+                    case 'v' -> markLine(grid, x, y, dir[1], '*', false);
+                    case '>' -> markLine(grid, x, y, dir[2], '*', false);
+                    case '<' -> markLine(grid, x, y, dir[3], '*', false);
                 }
+
+                if (players.contains("" + grid[x][y])) {
+                    for (int[] direction : dir) {
+                        markLine(grid, x, y, direction, 'o', true);
+                    }
+                }
+
             }
         }
     }
 
-    private void markLine(char[][] grid, int x, int y, int dx, int dy) {
+    private void markLine(char[][] grid, int x, int y, int[] dir, char c, boolean block) {
         int size = grid.length;
-        x += dx;
-        y += dy;
+        x += dir[0];
+        y += dir[1];
         while (x >= 0 && x < size && y >= 0 && y < size && !obstacles.contains("" + grid[x][y])) {
+            if (grid[x][y] == 'A' && block) break;
             if (grid[x][y] == '.') {
-                grid[x][y] = '*';
+                grid[x][y] = c;
             }
-            x += dx;
-            y += dy;
+            x += dir[0];
+            y += dir[1];
         }
     }
 
     protected boolean isInLineOfSight(char[][] grid) {
         int size = grid.length;
-        for (int y = size / 2; y > 0; y--) {
+        for (int y = size / 2; y >= 0; y--) {
+            if (players.contains("" + grid[size / 2][y]))
+                return true;
+
             if (obstacles.contains("" + grid[size / 2][y]))
                 break;
-
-            if (targets.contains("" + grid[size / 2][y]))
-                return true;
         }
         return false;
     }
 
     protected char walkAround(char[][] grid) {
+        int size = grid.length;
         if (steps == 0) {
-            currentStepCount = (currentStepCount + 1) % 10;
-            if (offByOne) {
-                currentStepCount++;
-            }
-            offByOne = !offByOne;
-            steps = currentStepCount;
-            return '>';
+            steps = random.nextInt(20);
+            return random.nextBoolean() ? '<' : '>';
         } else {
             steps--;
-            return safeMove(grid);
-        }
-    }
-
-    protected char safeMove(char[][] grid) {
-        int size = grid.length;
-        if (obstacles.contains("" + grid[size / 2][size / 2 - 1])) {
-            return '<';
-        } else {
-            return '^';
+            return obstacles.contains("" + grid[size / 2][size / 2 - 1]) ? '<' : '^';
         }
     }
 
@@ -134,21 +135,18 @@ public class RumbleBot extends Bot {
 
         while (!queue.isEmpty()) {
             Move move = queue.poll();
-            if (move.x < 0 || move.x >= size || move.y < 0 || move.y >= size || visited[move.x][move.y]) continue;
-            visited[move.x][move.y] = true;
-            if (obstacles.contains("" + grid[move.x][move.y])) continue;
-            if (targets.contains("" + grid[move.x][move.y])) return move.direction;
+            if (move.x() < 0 || move.x() >= size || move.y() < 0 || move.y() >= size || visited[move.x()][move.y()]) continue;
+            visited[move.x()][move.y()] = true;
+            if (obstacles.contains("" + grid[move.x()][move.y()])) continue;
+            if (targets.contains("" + grid[move.x()][move.y()])) return move.direction();
 
             for (int[] direction : directions) {
-                queue.add(new Move(move.x + direction[0], move.y + direction[1], move.direction));
+                queue.add(new Move(move.x() + direction[0], move.y() + direction[1], move.direction()));
             }
         }
 
         System.err.println("No path found");
-        return safeMove(grid);
-    }
-
-    protected record Move(int x, int y, char direction) {
+        return walkAround(grid);
     }
 
 }

src/SnakeBot.java

@@ -1,15 +1,26 @@
+import records.Move;
+
+import java.util.HashSet;
 import java.util.LinkedList;
 import java.util.Queue;
 
 public class SnakeBot extends Bot {
     protected final static String obstacles = "~#X*";
+    protected final static char target = '@';
     protected boolean offByOne = true;
     protected int currentStepCount = 0;
     protected int steps = 0;
 
     public static void main(String[] args) {
-            Bot bot = new SnakeBot(args);
-            bot.run();
+        if (args.length == 0) {
+            String[] dummyArgs = {"localhost", "63187"};
+            for (int i = 0; i < 5; i++) {
+                new Thread(new SnakeBot(dummyArgs)).start();
+            }
+        }
+
+        Bot bot = new SnakeBot(args);
+        bot.run();
     }
 
     protected SnakeBot(String[] args) {
@@ -72,10 +83,8 @@ public class SnakeBot extends Bot {
         int rightStars = 0;
         for (int x = 0; x < size / 2; x++) {
             for (int y = 0; y < size; y++) {
-                if (grid[x][y] == '*')
-                    leftStars++;
-                if (grid[size - x - 1][y] == '*')
-                    rightStars++;
+                if (grid[x][y] == '*') leftStars++;
+                if (grid[size - x - 1][y] == '*') rightStars++;
             }
         }
 
@@ -101,13 +110,13 @@ public class SnakeBot extends Bot {
 
         while (!queue.isEmpty()) {
             Move move = queue.poll();
-            if (move.x < 0 || move.x >= size || move.y < 0 || move.y >= size || visited[move.x][move.y]) continue;
-            visited[move.x][move.y] = true;
-            if (obstacles.contains("" + grid[move.x][move.y])) continue;
-            if (grid[move.x][move.y] == '@') return move.direction;
+            if (move.x() < 0 || move.x() >= size || move.y() < 0 || move.y() >= size || visited[move.x()][move.y()]) continue;
+            visited[move.x()][move.y()] = true;
+            if (obstacles.contains("" + grid[move.x()][move.y()])) continue;
+            if (grid[move.x()][move.y()] == target) return move.direction();
 
             for (int[] direction : directions) {
-                queue.add(new Move(move.x + direction[0], move.y + direction[1], move.direction));
+                queue.add(new Move(move.x() + direction[0], move.y() + direction[1], move.direction()));
             }
         }
 
@@ -115,7 +124,4 @@ public class SnakeBot extends Bot {
         return safeMove(grid);
     }
 
-    protected record Move(int x, int y, char direction) {
-    }
-
 }

src/records/Move.java

@@ -0,0 +1,4 @@
+package records;
+
+public record Move(int x, int y, char direction) {
+}