Upload checkers

05week/checkers.js → 05week/checkers.txt

@@ -51,8 +51,18 @@ class Board {
     }
     console.log(string);
   }
+  // Insert pieces here
+  checkers(){
+    for(let row = 0; row < 8; row++){
+      for(let column = 0; column < 8; column++){
+        console.log("test")
+        if( row != 3 || row != 4){
+          this.viewGrid[row][column] = 0
+        }
+      }
+    }
+  }
 
-  // Your code here
 }
 
 class Game {
@@ -61,6 +71,7 @@ class Game {
   }
   start() {
     this.board.createGrid();
+    this.board.checkers();
   }
 }
 

05week/checkers/checkers.js

@@ -0,0 +1,142 @@
+'use strict';
+
+const readline = require('readline');
+const rl = readline.createInterface({
+  input: process.stdin,
+  output: process.stdout
+});
+
+
+function Checker(color) {
+  //Set the symbol of each symbol
+  if(color === 'white'){
+    this.symbol = String.fromCharCode(0x125CB);
+  }else{
+    this.symbol = String.fromCharCode(0x125CF);
+  }
+  return this.symbol;
+}
+
+class Board {
+  constructor() {
+    this.grid = [];
+    this.checkers = [];
+  }
+  // method that creates an 8x8 array, filled with null values
+  createGrid() {
+    // loop to create the 8 rows
+    for (let row = 0; row < 8; row++) {
+      this.grid[row] = [];
+      // push in 8 columns of nulls
+      for (let column = 0; column < 8; column++) {
+        this.grid[row].push(null);
+      }
+    }
+  }
+  viewGrid() {
+    // add our column numbers
+    let string = "  0 1 2 3 4 5 6 7\n";
+    for (let row = 0; row < 8; row++) {
+      // we start with our row number in our array
+      const rowOfCheckers = [row];
+      // a loop within a loop
+      for (let column = 0; column < 8; column++) {
+        // if the location is "truthy" (contains a checker piece, in this case)
+        if (this.grid[row][column]) {
+          // push the symbol of the check in that location into the array
+          rowOfCheckers.push(this.grid[row][column].symbol);
+        } else {
+          // just push in a blank space
+          rowOfCheckers.push(' ');
+        }
+      }
+      // join the rowOfCheckers array to a string, separated by a space
+      string += rowOfCheckers.join(' ');
+      // add a 'new line'
+      string += "\n";
+    }
+    console.log(string);
+  }
+    createCheckers() {
+        //Checkers location at the start of a new game
+        let position = {
+          white:[
+            [0, 1], [0, 3], [0, 5], [0, 7],
+            [1, 0], [1, 2], [1, 4], [1, 6],
+            [2, 1], [2, 3], [2, 5], [2, 7]
+          ],
+          black:[
+            [5, 0], [5, 2], [5, 4], [5, 6],
+            [6, 1], [6, 3], [6, 5], [6, 7],
+            [7, 0], [7, 2], [7, 4], [7, 6]
+          ], 
+        }
+        //Places the pieces onto the board
+        for (let color in position){
+            for (let location of position[color]){
+              //Initiate a new Checker and pass in the color
+              let checker = new Checker(color);
+              //Set the checker on the grid
+              this.grid[location[0]][location[1]] = checker;
+              //Add instance of the Checker onto the checkers array
+              this.checkers.push(checker)
+            }
+        }
+    }
+  selectChecker(start, end) {
+    //return checker at a particulare spot
+    let checker = this.grid[start[0]][start[1]];
+    //let removeChecker = this.checkers.indexOf(this.grid[end[0]][end[1]]);
+    this.grid[end[0]][end[1]] = checker;
+    this.grid[start[0]][start[1]] = ' ';
+    //return removeChecker;
+  }
+  killChecker(position) {
+    //Set the killed piece to a blank space
+    this.grid[position[0]][position[1]] = ''
+    //Store index of checker in checkers array
+    let removeChecker = this.checkers.indexOf(this.grid[position[0]][position[1]])
+    //Remove checker from array in order to count pieces on board
+    this.checkers.splice(removeChecker,1);
+  }
+}
+
+class Game {
+  constructor() {
+    this.board = new Board;
+  }
+  start() {
+    this.board.createGrid();
+    this.board.createCheckers();
+  }
+  moveChecker(start, end){
+    //Move checker
+    this.board.selectChecker(start, end);
+    //See if player moved up two rows indicating they jumped the other player
+    if ((Math.abs(start[0]-end[0])) === 2){
+      //Get the posistion the jumped checker
+      let newRow = ((parseFloat(start[0])+parseFloat(end[0]))/2);
+      let newColumn = ((parseFloat(start[1])+parseFloat(end[1]))/2);
+      let newPosition = [newRow,newColumn]
+      //Remove it from board and checkers array
+      this.board.killChecker(newPosition);
+    }
+  }
+}
+
+function getPrompt() {
+  game.board.viewGrid();
+  rl.question('which piece?: ', (whichPiece) => {
+    rl.question('to where?: ', (toWhere) => {
+      game.moveChecker(whichPiece, toWhere);
+      getPrompt();
+    });
+  });
+}
+
+const game = new Game();
+game.start();
+
+getPrompt();
+
+module.exports = game;

05week/checkers/package.json

@@ -0,0 +1,9 @@
+{
+  "scripts": {
+    "start": "node checkers.js",
+    "test": "mocha"
+  },
+  "devDependencies": {
+    "mocha": "^5.2.0"
+  }
+}

05week/checkers/test.js

@@ -0,0 +1,36 @@
+"use strict";
+
+const assert = require("assert");
+const game = require("./checkers")
+
+// Tests
+if (typeof describe === "function") {
+  describe("Game", () => {
+    it("should have a board", () => {
+      assert.equal(game.board.constructor.name, "Board");
+    });
+    it("board should have 24 checkers", () => {
+      assert.equal(game.board.checkers.length, 24);
+    });
+  });
+
+  describe("Game.moveChecker()", () => {
+    it("should move a checker", () => {
+      assert(!game.board.grid[4][1]);
+      game.moveChecker("50", "41");
+      assert(game.board.grid[4][1]);
+      game.moveChecker("21", "30");
+      assert(game.board.grid[3][0]);
+      game.moveChecker("52", "43");
+      assert(game.board.grid[4][3]);
+    });
+    it("should be able to jump over and kill another checker", () => {
+      game.moveChecker("30", "52");
+      assert(game.board.grid[5][2]);
+      assert(!game.board.grid[4][1]);
+      assert.equal(game.board.checkers.length, 23);
+    });
+  });
+} else {
+  getPrompt();
+}