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Jim Lambert
Jim Lambert

Unity 2D Dungeon Gunner Roguelike Development Course: Build a Fun and Challenging Game


Introduction




A roguelike game is a subgenre of role-playing video games characterized by procedurally generated levels, turn-based gameplay, grid-based movement, and permanent death of the player character. The name comes from Rogue, an ASCII-based dungeon crawler released in 1980 that inspired many other games with similar features. Roguelike games are popular among gamers who enjoy challenging and replayable experiences that test their skills and strategies.


In this article, I will show you how to download a free course that teaches you how to create a 2D dungeon gunner roguelike game using Unity, one of the most widely used game engines in the industry. You will learn how to use Unity's tools and features to design and develop a sophisticated game from scratch. You will also get some tips and best practices for Unity 2D game development along the way.




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What you will learn in this course




The course is called and it is published by Udemy, an online learning platform that offers thousands of courses on various topics. The course is taught by Sunny Valley Studio, a professional game developer with over 10 years of experience in the industry.


The course consists of over 50 hours of video lectures, quizzes, assignments, and projects that cover all aspects of creating a 2D dungeon gunner roguelike game using Unity. By the end of the course, you will be able to:


  • Create a procedurally generated dungeon layout using Random Walk and Binary Space Partitioning algorithms



  • Add details and decorations to your dungeon using tilemaps and sprites



  • Create a player character with sprite renderer, collider, rigidbody, movement, and shooting mechanics



  • Create different types of enemies and projectiles with prefabs and scripts



  • Implement health and damage systems with colliders, triggers, variables, UI elements, sound effects, and particle effects



  • Optimize your game performance with profiling tools and best practices



  • Test your game on different platforms and devices with build settings and simulator features



The course is suitable for beginners who have some basic knowledge of Unity and C#. You will also get access to all the assets and source code used in the course, as well as a certificate of completion upon finishing the course.


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  • A computer with Windows, Mac, or Linux operating system



  • Unity 2020.3 or later version installed on your computer



  • A code editor of your choice, such as Visual Studio Code or MonoDevelop



  • A stable internet connection to stream the video lectures and download the assets



  • A mouse and keyboard to interact with Unity and your code editor



Steps




To download the course for free, you will need to follow these steps:


  • Go to the on Udemy and click on the "Enroll now" button.



  • If you don't have an Udemy account, you will need to create one by entering your name, email, and password. If you already have an account, you can log in with your credentials.



  • Once you enroll in the course, you will be able to access all the content from your dashboard. You can watch the video lectures, take the quizzes, do the assignments, and download the assets at your own pace.



  • You can also download the video lectures for offline viewing by clicking on the "Download lecture" button below each video.



How to create a 2D dungeon in Unity




Setting up the project




The first step in creating a 2D dungeon gunner roguelike game is to set up a new 2D project in Unity. To do this, follow these steps:


  • Open Unity Hub and click on the "New" button.



  • Select "2D" as the template and give your project a name, such as "DungeonGunner". You can also choose a location for your project folder on your computer.



  • Click on "Create" and wait for Unity to create and open your project.



  • In the Project window, right-click on the Assets folder and select "Import Package > Custom Package". Then, browse to the location where you downloaded the assets from the course and select the "DungeonGunnerAssets.unitypackage" file. Click on "Import" and wait for Unity to import all the assets into your project.



  • In the Hierarchy window, delete the default Main Camera and Directional Light GameObjects. Then, drag and drop the DungeonGunnerScene.unity file from the Assets folder into the Hierarchy window. This will load a pre-made scene with some basic settings and GameObjects for your game.



Generating the dungeon layout




The next step is to generate a random dungeon layout using procedural generation algorithms. Procedural generation is a technique that uses mathematical rules and randomness to create content that is different every time. In this case, we will use two algorithms: Random Walk and Binary Space Partitioning (BSP).


Random Walk is an algorithm that simulates a random path through a grid of cells. It starts from a random cell and moves in one of four directions (up, down, left, or right) until it reaches a boundary or a previously visited cell. It then changes direction randomly and repeats the process until it reaches a certain number of steps or cells. The result is a series of connected cells that form a corridor.


BSP is an algorithm that divides a rectangular area into smaller sub-areas recursively. It starts from the whole area and splits it into two halves along a random horizontal or vertical line. It then repeats the process for each half until it reaches a certain minimum size or depth. The result is a tree-like structure of sub-areas that form rooms.


To generate a dungeon layout using these algorithms, we will use a script called DungeonGenerator.cs that is attached to an empty GameObject called DungeonGenerator in our scene. This script has several public variables that we can adjust to customize our dungeon generation parameters, such as:



  • gridWidth and gridHeight: The width and height of our grid of cells in units.



  • cellSize: The size of each cell in units.



  • walkIterations: The number of times we apply the Random Walk algorithm to our grid.



  • walkLength: The maximum number of steps or cells that each Random Walk can take.



  • minRoomSize and maxRoomSize: The minimum and maximum size of each room in units.



  • minRoomDepth and maxRoomDepth: The minimum and maximum depth of the BSP tree.



To generate a dungeon layout, we need to do the following steps:


  • Initialize an empty grid of cells with the given width and height.



  • Apply the Random Walk algorithm to the grid with the given iterations and length. Mark the cells that are visited by the Random Walk as corridor cells.



  • Apply the BSP algorithm to the grid with the given room size and depth. Mark the cells that are inside the sub-areas as room cells.



  • Connect the rooms and corridors with doors. Mark the cells that are adjacent to both room and corridor cells as door cells.



  • Instantiate GameObjects for each cell type (floor, wall, door) according to their position and size in the grid.



The DungeonGenerator script has a public method called GenerateDungeon() that performs these steps and creates a dungeon layout in our scene. We can call this method from another script or from the editor by clicking on the "Generate Dungeon" button in the inspector.


Adding details and decorations




The next step is to add some details and decorations to our dungeon to make it more appealing and re


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