The Essential Guide to HTML5
MAZES Code Explanation Close canvas Line break Press mouse button down, drag and release to make a wall. Instructions Use arr ...
CHAPTER 7 Creating the second maze application The localStorage data can be accessed by a different application from the one tha ...
MAZES Table 7-5. Complete Code for the Travel Maze Script Code Explanation <html> <head> <title>Travel maze< ...
CHAPTER 7 Code Explanation this.angle = (2*Math.PI)/n^ this.moveit = movetoken;^ this.fillstyle = stylestring;^ }^ function draw ...
MAZES Code Explanation var wall;^ for(i=0;i<walls.length;i++) {^ wall = walls[i];^ if (intersect(wall.sx,wall.sy, wall.fx,wa ...
CHAPTER 7 Code Explanation ctx.lineWidth = this.width;^ ctx.strokeStyle = this.strokestyle;^ ctx.beginPath();^ ctx.moveTo(this.s ...
MAZES Code Explanation }^ function getkeyAndMove(event) {^ var keyCode;^ if(event == null)^ {^ keyCode = window.event.keyCode;^ ...
CHAPTER 7 Code Explanation case 39: //right arrow^ mypent.moveit(unit,0);^ break;^ case 40: //down arrow^ mypent.moveit(0,unit); ...
MAZES Code Explanation t=0.0; }^ else if (t>1.0) {^ t = 1.0;^ }^ dx = (sx+t*(fx-sx))-cx;^ dy = (sy +t*(fy-sy))-cy;^ rt = (dx* ...
CHAPTER 7 Code Explanation var lsname;^ for (i=0;i<document.gf.level.length;i++) { Iterate through the radio buttons in the g ...
MAZES Code Explanation curwall = new Wall(sx,sy,fx,fy,wallwidth,wallstyle); walls.push(curwall);^ everything.push(curwall);^ }^ ...
CHAPTER 7 Code Explanation <form name="gf" onSubmit="return getwalls()" > <br/>^ <input type="radio" value="hard" ...
MAZES The ability to save to local storage is a powerful feature. For this, and any game or activity that takes a fair amount of ...
CHAPTER 7 The use of local storage was fairly intricate for this application, requiring the encoding and decoding of the maze in ...
Chapter 8 Rock, Paper, Scissors In this chapter, we will cover playing against a computer creating graphics to serve as buttons ...
CHAPTER 8 provided in the download pack from http://www.friendsofed.com, or your own sounds. Note that youll need to change the ...
ROCK, PAPER, SCISSORS Next in the game, the player and the computer tie, as shown in Figure 8-3. Theres no change in the score ...
CHAPTER 8 262 This application, like all the examples in this book, is only a start. Both the plain and audio versions keep a ru ...
ROCK, PAPER, SCISSORS The rules of the game must be obeyed! This includes both what beats what and the folksy message displayed ...
CHAPTER 8 The parameters of the function hold all the information. The selection of names sx, sy, and so on, avoids built-in ter ...
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