The Essential Guide to HTML5
CANNONBALL AND SL INGSHOT Code Explanation } function drawall() { ctx.clearRect(0,0,cwidth,cheight); var i; for (i=0;i<everyt ...
CHAPTER 4 Code Explanation verticalvel1 = verticalvel2; cball.moveit(dx,dy); var bx = cball.sx; var by = cball.sy; if ((bx>=t ...
CANNONBALL AND SL INGSHOT Code Explanation <canvas id="canvas" width="600" height="400"> Your browser doesn't support the ...
CHAPTER 4 The support for audio and video in HTML5 varies across the browsers. You can look ahead to the presentation of video a ...
CANNONBALL AND SL INGSHOT Function Invoked By / Called By Calls change Invoked by action of the setInterval function called in f ...
CHAPTER 4 Code Explanation var cheight = 600; var ctx; var canvas1; var everything = []; var tid; var startrockx = 100; Starting ...
CANNONBALL AND SL INGSHOT Code Explanation this.bx = bx; Set property bx this.by = by; ... by this.s1x = s1x; ... s1x this.s1y = ...
CHAPTER 4 Code Explanation ctx.lineTo(this.s2x,this.s2y); Set up to draw to s2x,s2y ctx.lineTo(this.s3x,this.s3y); Draw to s3x,s ...
CANNONBALL AND SL INGSHOT Code Explanation this.moveit = moveball; this.fillstyle = stylestring; } function drawball() { ctx.fil ...
CHAPTER 4 Code Explanation this.swidth = swidth; this.sheight = sheight; this.fillstyle = stylestring; this.draw = drawrects; th ...
CANNONBALL AND SL INGSHOT Code Explanation ctx.drawImage(this.img,this.sx,this. sy,this.swidth,this.sheight); } var target = ne ...
CHAPTER 4 Code Explanation var my; Variable to hold mouse y if ( ev.layerX || ev.layerX == 0) { ev.layerX is okay mx= ev.layerX ...
CANNONBALL AND SL INGSHOT Code Explanation my = ev.layerY; ev.layerY for my } else if (ev.offsetX || ev.offsetX == 0) { Does off ...
CHAPTER 4 Code Explanation drawall(); tid = setInterval(change,100); } } function drawall() { ctx.clearRect(0,0,cwidth,cheight); ...
CANNONBALL AND SL INGSHOT Code Explanation target.img = feathers; Change target img } if (by>=ground.sy) { clearInterval(tid) ...
CHAPTER 4 Testing and uploading the application................................................................................. ...
Chapter 5 The Memory (aka Concentration) Game In this chapter, we will cover drawing polygons placing text on the canvas progra ...
CHAPTER 5 Figure 5-1. Opening screen of the memory game, version one Figure 5-2 displays the result after a player has clicked o ...
THE MEMORY (AKA CONCENTRATION) GAME When two cards match, the application removes them and notes the match in the form (Figure 5 ...
CHAPTER 5 In version two of the game, the card fronts display photographs of people rather than polygons. And note that although ...
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