checkers

05week/checkers.js

@@ -8,13 +8,20 @@ const rl = readline.createInterface({
 });
 
 
-function Checker() {
-  // Your code here
+class Checker {
+  constructor(color) {
+    if (color === 'white') {
+      this.symbol = '○';
+    } else {
+      this.symbol = '●';
+    }
+  }
 }
 
 class Board {
   constructor() {
-    this.grid = []
+    this.grid = [];
+    this.checkers = [];
   }
   // method that creates an 8x8 array, filled with null values
   createGrid() {
@@ -51,8 +58,46 @@ class Board {
     }
     console.log(string);
   }
+  createCheckers() {
+    let whitePosition = [
+      [0, 1], [0, 3], [0, 5], [0, 7],
+      [1, 0], [1, 2], [1, 4], [1, 6],
+      [2, 1], [2, 3], [2, 5], [2, 7]]; 
+    let blackPosition = [
+      [5, 0], [5, 2], [5, 4], [5, 6],
+      [6, 1], [6, 3], [6, 5], [6, 7],
+      [7, 0], [7, 2], [7, 4], [7, 6]
+    ];
+    for (let i=0;i<12;i++){
+      // whitePosition[i].push(this.grid);
+      // whitePosition[i].push(this.checkers);
+      let whiteChecker = new Checker('white');
+      let whiteRow = whitePosition[i][0];
+      let whiteCol = whitePosition[i][1];
+
+      blackPosition[i].push(this.grid);
+      // blackPosition[i].push(this.checkers);
+      let blackChecker = new Checker ('black');
+      let blackRow = blackPosition[i][0];
+      let blackCol = blackPosition[i][1];
+
+      this.grid[whiteRow][whiteCol] = whiteChecker;
+      this.grid[blackRow][blackCol] = blackChecker;
+      this.checkers.push(whiteChecker, blackChecker);
+    }
+  }
+  selectChecker(row, col) {
+    // this.board.grid = [start][end];
+    return this.grid[row][col];
+  }
+  killChecker(position){
+    // this.selectChecker = (position[0], position[1]);
+    let checker = this.selectChecker(position[0], position[1])
+    let indexChecker = this.checkers.indexOf(checker)
+    this.checkers.splice(indexChecker, 1);
 
-  // Your code here
+    this.grid[position[0]][position[1]] = null;
+  }
 }
 
 class Game {
@@ -61,6 +106,23 @@ class Game {
   }
   start() {
     this.board.createGrid();
+    this.board.createCheckers();
+  }
+  moveChecker(start, end) {
+    const startRow= start.charAt(0);
+    const startCol = start.charAt(1);
+    const endRow = end.charAt(0);
+    const endCol = end.charAt(1);
+    console.log('start: ' + start);
+    console.log('end: ' + end);
+    const checker = this.board.selectChecker(start[0], start[1]);
+    this.board.grid[endRow][endCol] = checker;
+    // this.board.grid[endRow][endCol] = this.board.grid[startRow][startCol]
+    this.board.grid[startRow][startCol] = null;
+    if (Math.sqrt((endRow-startRow)^2 + (endCol-startCol)^2) >= 2){
+      // const position = [((startRow + endRow)/2),((startCol+endCol)/2)];
+      this.board.killChecker[(startRow + endRow)/2,(startCol+endCol)/2];
+    }
   }
 }