Arduino uno User Manual

Game.score = 0;
-
resetMovingObjects();
5
updateStatistics();
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drawPlayfield();
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}
-
-
function resetMovingObjects() {
10
$("#paddle").css("left", (Game.playfield.width - Game.paddle.width) / 2);
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$("#ball").css("left", (Game.playfield.width - Game.ball.diameter) / 2);
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$("#ball").css("top", parseInt($("#paddle").css("top")) - Game.paddle.height);
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}
-
15
function updateStatistics() {
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$('#lives').text(Game.lives);
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$('#score').text(Game.score);
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}
-
20
function drawPlayfield() {
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var colors = ['blue', 'green', 'red', 'yellow'];
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var $playfield = $('#playfield');
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$playfield.children('.row').remove();
-
25
for (var row = 0; row < Game.playfield.rows; row++) {
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var $row = $('<div class="row"></div>');
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$row.appendTo($playfield);
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for (var col = 0; col < Game.playfield.columns; col++) {
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var $block = $("<div class='block'></div>");
30
$block.css("background", 'url("img/' + colors[row] + '.png")');
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$block.appendTo($row);
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}
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}
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}
35
initGame pretty much deserves its name, because it actually initializes the
game. It sets a few properties of the Game object to their default values
directly. Then it calls several functions for initializing specific game objects.
resetMovingObjects sets the positions of the ball and the paddle to their default
values. The paddle appears at the middle of the playfield’s bottom. The ball
then sits on top of the paddle.
updateStatistics copies the current number of lives and the current score to the
HTML page. It uses jQuery’s text method to set the text of the elements speci-
fied by the IDs lives and score . In the initGame function, the game’s default values
will be copied, of course, but we’ll call this function later on, when the game
is running.
The drawPlayfield function draws the bricks that the player has to hit with the
ball. It creates four <div> elements with their class attribute set to row . Within
Chapter 7. Writing a Game for the Motion-Sensing Game Controller • 118
report erratum • discuss
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Arduino uno Specifications

General

Form factor	Arduino
Certification	RoHS, FC, CE
Processor model	-
Processor frequency	- MHz
Microcontroller model	ATmega328
Microcontroller frequency	16 MHz
DC input voltage	7-12 V
Operating voltage	5 V
DC current per I/O pin	40 mA
Flash memory	0.032 MB
Maximum internal memory	- GB
SRAM (Static Random Access Memory)	2 KB
EEPROM (Electrically Erasable Programmable Read-Only Memory)	1 KB
Wi-Fi	No
Number of analog I/O pins	6
Number of digital I/O pins	14

Weight and Dimensions

Board dimensions	53.4 x 68.6 mm