Book Image

HTML5 Game Development with GameMaker

By : Jason Lee Elliott
Book Image

HTML5 Game Development with GameMaker

By: Jason Lee Elliott

Overview of this book

The introduction of HTML5 has revolutionized the web browser as a legitimate gaming platform with unlimited potential. Making games for the browser has never been simpler, especially with GameMaker Studio. Developers have full control over asset management, built-in systems for physics, particles and path finding. In addition, it offers a rich scripting language and extensions for developers now enabling everyone to create games and monetize them quickly and easily.HTML5 Game Development with GameMaker will show you how to make and release browser based games using practical examples. This book utilizes GameMaker's powerful scripting language allowing you to create your first game in no time. With this guide you will develop a thorough skill set and a coherent understanding of the tools to develop games of increasing complexity, gradually enhancing your coding abilities and taking them to a whole new level. The GameMaker Studio environment allows you to jump right into building browser based games quickly and releasing them online. The chapters focus on core practical elements, such as, artificial intelligence and creating challenging boss battles. This book guides you on how to use advanced features easily and effectively, these include, data structures and demonstrating how to create rigid body physics with simple explanations and visual examples. By the end of this book you will have an in-depth knowledge of developing and publishing online social browser based games with GameMaker.
Table of Contents (16 chapters)
HTML5 Game Development with GameMaker
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Adding introductory text to each level


We have a good end to the levels, but the player may not be sure what to do. What we need is a bit of a story to sell the idea of destroying towers and explaining what it is the player needs to do in each level. To do this we will add a screen, much like the Score Screen at the start of each level:

  1. We will need a button to start the level, which again will need to be drawn on screen. Create a new Script, scr_Menu_Button_Start, with some very familiar code:

    draw_sprite(spr_Button_Start, 0, startX, startY);
    if (win_Y > startY - start_ZoneHeight && win_Y < startY + start_ZoneHeight)
    {
        if (win_X > startX - start_ZoneWidth && win_X < startX + start_ZoneWidth)
        {
            draw_sprite(spr_Button_Start, 1, startX, startY);
            if (mouse_check_button_pressed(mb_left)) 
            {        
                isGameActive = true;
                instance_destroy();
            }
        }
    }

    All the standard button code is here, but when the button...