{"id":851,"date":"2025-02-28T00:54:55","date_gmt":"2025-02-28T00:54:55","guid":{"rendered":"https:\/\/sites.wsagames.com\/et4g23\/?p=851"},"modified":"2025-05-09T15:07:02","modified_gmt":"2025-05-09T15:07:02","slug":"procedural-room-generation","status":"publish","type":"post","link":"https:\/\/sites.wsagames.com\/et4g23\/2025\/02\/28\/procedural-room-generation\/","title":{"rendered":"PRG – Pt 1"},"content":{"rendered":"\n

After my research on Anna’s GDD and existing roguelite\/ roguelike games and their procedural room generation. I felt I was knowledgeable enough on it to begin its development. To start off, I followed a YouTube tutorial<\/a> so that I would have a basis that I could expand and build upon once I had finished it.<\/p>\n\n\n\n

Prototype 1<\/h2>\n\n\n\n
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Prefabs of all of the rooms, the letters corresponding to what doors they have (B – Bottom, R – Right etc.)
Note: This screenshot was taken later, which is why the rooms already have artwork.<\/figcaption><\/figure>\n<\/div><\/div>\n\n\n\n
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A screenshot of the TLB room prefab
(Has doorways on Top, Left and Bottom)

gameobjects in the red circles being the SpawnPoints, where other room prefabs would be spawned.<\/figcaption><\/figure>\n<\/div><\/div>\n<\/div>\n\n\n\n

How the room generation works is that I created a variety of ‘Room’ prefabs, these room prefabs were all the same heigh and width, with a different amount of doors in different directions to one another. They would then be instantiated next to one another on ‘SpawnPoints’ that were half of a room’s width or height away (Depending on whether the room would spawn beside another or above\/below it). This would all start from an ‘EntryRoom’ a room that had four doorways (one in each direction) and therefore four SpawnPoints that would instantiate rooms all around it. This would be the room that the player would find themselves in when they first entered the Depression Realm.<\/p>\n\n\n\n

Each of the doorways would require a different type of room, for example, the SpawnPoint above the entry room would require a room that had a BOTTOM doorway, this is to ensure that the two rooms would link to one another. In order to do this, I created a int variable on the SpawnPoints called ‘openingDirection’. This would tell the SpawnPoint which doors they could instantiate depending on their position.<\/p>\n\n\n\n

For example, the SpawnPoints that were above the room, would have an ‘openingDirection’ of ‘1’. I could then, depending on this int variable, instantiate rooms from more specific arrays, like an array of all the rooms that have a doorway leading downwards.
The following is the script for the SpawnPoint gameobjects:<\/p>\n\n\n\n

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I also created an empty ‘RoomTemplates’ gameobject that would house the arrays that the SpawnPoint gameobjects would choose from to instantiate random rooms.
This is the script for the RoomTemplates gameobject:<\/p>\n\n\n\n

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This first prototype of the procedural room generation worked, spawning rooms from an array of prefabs that would link doors from the room that was instantiating the new room, to the new room that was being instantiated. However, there were two main issues that I saw straight away that needed to be fixed (Other than the absurd amount of rooms that were being instantiated).
Issue 1: Rooms were able to instantiate on top of another room that was already there in the first place
Issue 2: Rooms were able to block off other rooms that had doorways leading into them<\/p>\n\n\n\n

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