class10-checkers

05week/checkers.js

@@ -8,13 +8,20 @@ const rl = readline.createInterface({
 });
 
 
-function Checker() {
-  // Your code here
+class Checker {
+  constructor(team) {
+    if (team === "yellow") {
+      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() {
@@ -42,7 +49,7 @@ class Board {
         } else {
           // just push in a blank space
           rowOfCheckers.push(' ');
-        }
+        }  
       }
       // join the rowOfCheckers array to a string, separated by a space
       string += rowOfCheckers.join(' ');
@@ -52,15 +59,56 @@ class Board {
     console.log(string);
   }
 
-  // Your code here
+  createCheckers() {
+    const yellowPos = [
+      [0,1], [0,3], [0,5], [0,7],
+      [1,0], [1,2], [1,4], [1,6],
+      [2,1], [2,3], [2,5], [2,7]
+    ];
+    const bluePos = [
+      [5,0], [5,2], [5,4], [5,6],
+      [6,1], [6,3], [6,5], [6,7],
+      [7,0], [7,2], [7,4], [7,6] 
+    ];
+    yellowPos.forEach((position) => {
+      const checker = new Checker("yellow");
+      this.checkers.push(checker);
+      this.grid[position[0]][position[1]] = checker;
+    })
+    bluePos.forEach((position) => {
+      const checker = new Checker("blue");
+      this.checkers.push(checker);
+      this.grid[position[0]][position[1]] = checker;
+    })
+  }
 }
 
 class Game {
   constructor() {
     this.board = new Board;
   }
+  moveChecker(position1, position2) {
+    const checker = this.board.grid[position1[0]][position1[1]];
+    this.board.grid[position2[0]][position2[1]] = checker;
+    this.board.grid[position1[0]][position1[1]] = null;
+    const row1 = Number(position1[0]);
+    const row2 = Number(position2[0]);
+    const column1 = Number(position1[1]);
+    const column2 = Number(position2[1]);
+    if (Math.abs(row2 - row1) > 1) {
+      const rowAvg = (row1 + row2) / 2;
+      const columnAvg = (column1 + column2) / 2;
+      const deadChecker = this.board.grid[rowAvg][columnAvg];
+      this.board.checkers = this.board.checkers.filter(checker => {
+        return checker !== deadChecker;
+      })
+      this.board.grid[rowAvg][columnAvg] = null;
+    }
+
+  }
   start() {
     this.board.createGrid();
+    this.board.createCheckers();
   }
 }