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  • Book Overview & Buying Learning GDScript by Developing a Game with Godot 4
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Learning GDScript by Developing a Game with Godot 4

Learning GDScript by Developing a Game with Godot 4

By : Vanhove
4.8 (10)
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Learning GDScript by Developing a Game with Godot 4

Learning GDScript by Developing a Game with Godot 4

4.8 (10)
By: Vanhove

Overview of this book

In the digital landscape driven by interactive experiences, the demand for creative individuals with the skills to create captivating games has never been higher. Written by Sander Vanhove, a seasoned game developer with over 20 games to his credit, this book will serve as your entry point into game development, showing you how to leverage the powerful features of the open-source, versatile GDScript 2.0 to develop your ideas, from simple platformers to complex RPGs. Whether you're an aspiring game developer, a hobbyist seeking a creative outlet, or simply someone intrigued by the world of game programming, this book will guide you through the intricacies of the Godot 4 game engine. Starting with a primer on the fundamentals of programming, you’ll cover everything from data to logic, while familiarizing yourself with Godot’s built-in tools such as the physics engine, navigation, and cameras. As you progress, you’ll unlock deeper insights into more advanced tools that will take your programming to the next level. Aided by easy-to-follow step-by-step tutorials, examples, exercises, and experiments, you’ll seamlessly integrate this newfound knowledge to create a Vampire Survivor-like game from scratch. By the end of this book, you’ll have become proficient in leveraging the Godot 4 game engine to bring your gaming visions to life.
Table of Contents (22 chapters)
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1
Part 1:Learning How to Program
7
Part 2: Making a Game in Godot Engine
14
Part 3: Deepening Our Knowledge

Creating a save system

In theory, all we need to do is open a file, write the data we want to save to it, and then, later on, read that same file whenever we need the data. As it turns out, in the Godot Engine, it is indeed easy to read and write files.

We’re first going to see how to write to an external file.

Writing data to the disk

Let’s get to it by creating a new script called save_manager.gd under the autoloads folder. Then, to save data, put this code in the script:

extends Node
const SAVE_FILE_PATH: String = "user://save_data.json"
var save_data: Dictionary = {
   "highscore": 0
}
func write_save_data():
   var json_string: String = JSON.stringify(save_data)
   var save_file: FileAccess = FileAccess.open(SAVE_FILE_PATH, FileAccess.WRITE)
   if save_file == null:
      print("Could not open save file.")
     ...

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