Nuclear Throne is a bullet hell roguelike developed by Vlambeer. It's highly addictive and endlessly replayable because the map is different every time you play.
I wanted to try implementing something similar.
I start with an empty matrix for the grid, plus variables for the room width and height.
Each tile is one of three types: empty, floor, or wall.
Next, I use a random walk. A struct called Walker stores a position and a direction.
The room is set up and a given number of walkers are created.
Each step, the walkers randomly move, change direction, or die.
Once the room is filled above a certain percentage, all the walkers are removed.
A floor tile is placed at every position a walker has visited. Then a wall tile is placed in every empty position next to a floor tile.
Procedural generation can add a lot of content to a game, but it needs to be done well. Otherwise you're just choosing quantity over the quality of handcrafted levels.
This was just a learning exercise, and I'd love to explore other procedural generation methods for my own games.
