“Snake Attack” Documentation by “Code This Lab S.r.l.” v1.0

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“Snake Attack”

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Table of Contents

1. Description
2. Folder Contents
3. Getting Started
4. HTML Structure
5. CSS Files and Structure
6. Source Code
7. Game functions
8. Change Graphic
9. Disable Sounds
10. Wordpress Plugin

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A) Description - top

Snake Attack is a HTML5 survival game. Eat all the yummy fruits and become the biggest snake! But whatch out for the pesky snakes that will chase you to kill you!

The ZIP package contains the game with 1360x768 resolution that scales to fit the whole screen device
Just warning that for very wide screens, the game may not be perfectly full screen. The game is fully compatible with all most common mobile devices.
Sounds are enabled for mobile but we can't grant full audio compatibility on all mobile devices due to some well-know issue between some mobile-browser and HTML5. So if you want to avoid sound loading, please read Disable Sound section).
WARNING: Sounds can't be enabled for Windows Phone as this kind of device have unsolved issues with 'audio' and 'video' tag.

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B) Folder Contents - top

The item package contains the following folders:

• ctl_arcade_wp_plugin:
  This folder contains the game version (zip file inside) that can be used with wordpress plugin CTL Arcade
  
  
• game:
  This folder contains the full source code that you can edit as you need.
  
  
• live_demo:
  This folder contains the obfuscated version of the game. WARNING: you should use this version if you don't have to edit the original game.
  
  
• readme:
  This folder contains the readme of the game.

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C)Getting Started - top

To install the game just upload on your server the game folder live_demo.

• Game Resize: All game resolution automatically center itself and fits on the screen thanks to the ctl_utils.js file. If you want to avoid this, comment this function in index.html file:

					$(document).ready(function(){
						if (isIOS()) {
							setTimeout(function () {
								sizeHandler();
							}, 200);
						} else {
							sizeHandler();
						}
					});
				

• Localization: You can easily change game text for different languages, changing string in CLang.js

					TEXT_GAMEOVER = "GAME OVER";
					TEXT_SCORE = "SCORE";
					TEXT_BEST_SCORE = "BEST SCORE";
					TEXT_HELP1_PC = "Use arrow keys to drive your starship. Cross the screen from side to side to avoid blocks";
					TEXT_HELP1_MOBILE = "TOUCH THE LEFT OR RIGHT SIDE TO MOVE THE STARSHIP. Cross the screen from side to side to avoid blocks";
					TEXT_PAUSE = "PAUSE";
					TEXT_ARE_SURE = "ARE YOU SURE?";
					TEXT_DEVELOPED = "DEVELOPED BY";
					TEXT_MOVE = "MOVE";
					TEXT_EAT = "EAT";
					TEXT_AVOID = "AVOID";
				

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D)HTML Structure - top

This game have the canvas tag in the body. The ready event into the body calls the main function of the game: CMain().
The head section declares all the javascript functions of the game. The whole project uses a typical object-oriented approach.
In the init function there are 8 mapped events that can be useful eventually for stats

Game option: You can easily customize game setting when creating a new instance of the game in index.html file

                var oMain = new CMain({
                    hero_rotation_speed: 10, //HERO ROTATION SPEED WHEN MOVING RIGHT/LEFT
                    hero_speed_up: 15, //SET THIS MAX HERO SPEED WHEN PRESS UP KEY
                    hero_speed: 10, //MAX HERO SPEED
                    snakes_AI_speed: [10, 10, 10, 10],
                    food_score: [1] //ADD SCORE WHEN SNAKE EAT A FOOD BY TYPE  
                });
				

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E) CSS Files and Structure - top

The game use two CSS files. The first one is a generic reset file. Many browser interpret the default behavior of html elements differently. By using a general reset CSS file, we can work round this. Keep in mind, that these values might be overridden somewhere else in the file.

The second file contains all of the specific stylings for the canvas and some hack to be fully compatible with all most popular mobile devices

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F) Source Code - top

This game contains:

1. jQuery
2. Our custom scripts
3. CreateJs plugin
4. Howler Sound library

1. jQuery is a Javascript library that greatly reduces the amount of code that you must write.
2. The game have the following js files:
   • CMain: the main class called by the index file.
     This file controls the sprite_lib.js file that manages the sprite loading, the loop game and initialize the canvas with the CreateJs library
   • ctl_utils: this file manages the canvas resize and its centering
   • sprite_lib: this class loads all images declared in the main class
   • settings: general game settings
   • CLang: global string variables for language localization
   • CPreloader: simple text preloader to show resources loading progress
   • CMenu: simple menu with the play button
   • CGfxButton: this class create a standard button
   • CToggle: this class create a standard toggle button
   • CTextButton: this class create a standard text button
   • CGame: this class manages the game logic
   • CInterface: this class controls game GUI that contains text and buttons
   • CAnimHelp: this class show animation help
   • CAnimMenu: this class manage the animated menu elements
   • CAreYouSurePanel: this class show are you sure panel.
   • CBackground: this class manage a tiled background.
   • CControlAiSnakes: this class manages AI Enemy Snakes.
   • CCreditsPanel: this class show credits panel.
   • CEdge: this class manage a edge.
   • CEdges: this class manages edges.
   • CEndPanel: this class show end panel.
   • CFood: this class manage a food.
   • CHelpPanel: this class show help panel.
   • CLogo: this class manage logo game.
   • CManageFoods: this class manages foods.
   • CManageSections: this class manages sections.
   • CPause: this class show a pause menu.
   • CSingleQueue: this class manage a single piece of snake queue.
   • CSnake: this class manage a snake.
   • CSubAISnake: this class is a extention of AI Snakes.
   • CVector2: this class create a vector 2D.
3. CreateJs is a suite of modular libraries and tools which work together to enable rich interactive content on open web technologies via HTML5.
4. Howler is a javascript Audio library.

Resuming, the complete game flow is the following:

1. The index.html file calls the CMain.js file after ready event is called
2. The main class calls CPreloader.js to init preloader text and start sprite loading
3. When all sprites contained in "/sprites" and "/sounds" folder are loaded, the main class removes the preloader and calls the CMenu.js file that shows the main menu
4. If the user click the Play button in main menu, the CGame.js class is called and start the game
5. If the user click on the exit button in the up-right corner, the game returns to the menu screen

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G) Game functions - top

In this section will be explained all the most important functions used in CGame.js file.

• _init()
  This function attach on the canvas some game sprites like background (oBg)and the GUI.
• createPlayerSnake()
  This function create player snake with relative settings.
• addEnemySnakes()
  This function create a number of enemy snakes defined in settings.
• scrollStage()
  This function is called every update for center the visual to player snake.
• snakesHeadHeadCollision()
  This function is called every update for head collision between snakes.
• snakeEdgesCollision()
  This function is called every update for check collision between edges and snakes.
• unload()
  This function is called when user want to exit from the game.
• gameOver()
  This function is called when player run out the shot.
• update()
  This function manages the main game loop.

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H) Change Graphic - top

You can easily change all the game graphic, replacing all the file you need in the "/sprites" folder. Just respect file format (.png or .jpg) and size if you don't want to change any code line.

I) Disable Sounds - top

If you want to disable all the sounds for mobile devices, you have to change the following value in settings.js file:

var DISABLE_SOUND_MOBILE = true;

J) Wordpress Plugin - top

CTL Arcade will allow you to add a real arcade on your worpress website, in this way your users will be more involved and will stay connected longer.

It's possible to add Ads banner at the beginning of each game and at the end of each level. This will give you a new tool to increase your revenues.

Your own users will promote your website sharing their scores on the main Social Networks, with no extra costs for you.

You'll get by default the score-sharing on Twitter. To add Facebook just follow the guideline below.

3 widgets can be added in your pages through a shortcode.

• Game iframe
• Rate the Game
• Leaderboard

Minimum Requirements:

• PHP 4.3
• WordPress 4.3.1
• HTML5
• Canvas
• Javascript / jQuery

This plugin is designed to work only with games built by Code This Lab.

You can find it here!

Once again, thank you so much for purchasing this game. Feel free to contact us if you have any questions or issue relating to this game. No guarantees, but we'll do our best to assist.

CODE THIS LAB S.R.L.

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