From bd4de54fa7edbe97dec6cc610b4adcf9f6dfbd1a Mon Sep 17 00:00:00 2001
From: Illia Soloviov <74905269+wav3solo@users.noreply.github.com>
Date: Mon, 8 Jan 2024 02:03:58 +0100
Subject: [PATCH] Added SuperSnakeBot.java with arg score 30/32

---
 src/SuperSnakeBot.java | 115 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 src/SuperSnakeBot.java

diff --git a/src/SuperSnakeBot.java b/src/SuperSnakeBot.java
new file mode 100644
index 0000000..6655656
--- /dev/null
+++ b/src/SuperSnakeBot.java
@@ -0,0 +1,115 @@
+public class SuperSnakeBot extends Bot{
+    private String moves = "";
+    private char previousTurn = '<';
+    boolean frontIsBlocked;
+    boolean leftIsBlocked;
+    boolean rightIsBlocked;
+    private int spiralNumber = 0;
+    private boolean goesForward = true;
+    public static void main(String[] args) {
+        Bot superSnakeBot = new SuperSnakeBot(args);
+        superSnakeBot.run();
+    }
+
+    protected SuperSnakeBot(String[] args) {
+        super(args);
+    }
+
+    protected char nextMove(View view) throws Exception {
+        boolean stoneDetected = view.data.contains("@");
+        char nextMove;
+
+        nextMove = stoneDetected ? goToStone(view) : walkByColumns(view);
+        checkBarriers(view);
+        nextMove = checkMove(nextMove);
+
+        saveMove(nextMove);
+        return nextMove;
+    }
+
+    private void checkBarriers(View view){
+        int centerCoordinates = view.width / 2;
+        int frontIndex = getCharIndexFromCoordinates(view.width, centerCoordinates, centerCoordinates - 1);
+        int leftIndex = getCharIndexFromCoordinates(view.width, centerCoordinates - 1 , centerCoordinates);
+        int rightIndex = getCharIndexFromCoordinates(view.width, centerCoordinates + 1, centerCoordinates);
+
+        frontIsBlocked = view.data.charAt(frontIndex) == '*';
+        leftIsBlocked = view.data.charAt(leftIndex) == '*';
+        rightIsBlocked = view.data.charAt(rightIndex) == '*';
+    }
+
+    private char checkMove(char move) throws Exception {
+        if(move == '^' && frontIsBlocked){
+            resetMoves();
+
+            if(leftIsBlocked) move = '>';
+            else if(rightIsBlocked) move = '<';
+            else if(previousTurn == '<') move = '>';
+            else if(previousTurn == '>') move = '<';
+            else throw new Exception();
+        }
+        return move;
+    }
+
+    private void saveMove(char move){
+        if(move == '<' || move == '>'){
+            previousTurn = move;
+        }
+    }
+
+    private char walkBySpiral(View view) {
+        if (moves.isEmpty()) {
+            spiralNumber++;
+            moves += "^".repeat(view.width * spiralNumber) + ">" + "^".repeat(view.width * spiralNumber) + ">";
+        }
+        char nextMove = moves.charAt(0);
+        moves = moves.substring(1);
+        return nextMove;
+    }
+
+    private char walkByColumns(View view) {
+        if(moves.isEmpty()){
+            moves = "^".repeat(28);
+            moves += (goesForward ? ">" + "^".repeat(view.width) + ">" : "<" + "^".repeat(view.width) + "<");
+            goesForward = !goesForward;
+        }
+        char nextMove = moves.charAt(0);
+        moves = moves.substring(1);
+        return nextMove;
+    }
+
+    private char goToStone(View view) {
+        resetMoves();
+
+        int centerCoordinates = view.width / 2;
+
+        int leftIndex = getCharIndexFromCoordinates(view.width, centerCoordinates - 1, centerCoordinates);
+        int farLeftIndex = getCharIndexFromCoordinates(view.width, centerCoordinates - 2, centerCoordinates);
+
+        int rightIndex = getCharIndexFromCoordinates(view.width, centerCoordinates + 1, centerCoordinates);
+        int farRightIndex = getCharIndexFromCoordinates(view.width, centerCoordinates + 2, centerCoordinates);
+
+        int frontIndex = getCharIndexFromCoordinates(view.width, centerCoordinates, centerCoordinates - 1);
+        int farFrontIndex = getCharIndexFromCoordinates(view.width, centerCoordinates, centerCoordinates - 2);
+
+        if(view.data.charAt(frontIndex) == '@' || view.data.charAt(farFrontIndex) == '@'){
+            return '^';
+        }else if(view.data.charAt(leftIndex) == '@' || view.data.charAt(farLeftIndex) == '@'){
+            return '<';
+        }else if(view.data.charAt(rightIndex) == '@' || view.data.charAt(farRightIndex) == '@'){
+            return '>';
+        }else {
+            return '^';
+        }
+    }
+
+    private int getCharIndexFromCoordinates(int width, int x, int y){
+        return width * y + x;
+    }
+
+    private void resetMoves() {
+        moves = "";
+        spiralNumber = 0;
+        goesForward = true;
+    }
+}