It is time to start building the environments. I’ve been collecting lots of inspiration all over the web. I had folders with hundreds of images that I found interesting and wanted to keep as inspiration for the game.
Last week I sorted through it all and selected what’s going to become my template for making actual game art.
I was hesitant to invest time into this at first, given that none of the images will go into the game. It’s just stuff for inspiration, right? After a while though, the overall tone started getting under my skin and looking at the result, I felt very inspired and motivated.
Here’s a moodboard for the first environment. It is based on US rural areas of the 50s and 60s.
I’m going to use it to make a list of models to create, do a first pass of blocking out the rough shapes and add them to the game for testing. Next step is to dial in the color palette and fill in the details and textures.
New debug feature added to the game: recording inputs during gameplay and playing them back later.
This helps me reproduce a given scenario with a single button press. I can also do a Quake-style “timedemo” recording and use it as a performance benchmark.
To make replay work properly, I had to set a constant seed in my random number generator and make sure all entities were using it. The storage format is not optimal. Recording a long session would probably use more disk space than necessary. But we’re still talking a few kilobytes per minute, so it’s fine.
I upgraded my home machine to macOS Catalina. Big mistake.
Zero interesting new features
Devastro 2 OpenGL renderer broken
Left 4 Dead unplayable (oh no!)
My OpenGL window went black. Was I using OpenGL wrong? How? On my quest for the answer, I ended up rewriting significant parts of the rendering core, updated all my shaders and created a new SDL port. It took several nights to get things working again.
The good thing is that switching to SDL was one of my mid-term goals anyway. I’m going to need it on Windows. To complete the port, I added SDL event handling and audio backend.
It was nice to get rid of the Cocoa boilerplate. One thing I missed in the SDL API was a function to set a fixed aspect ratio for my window. I had to do it like this:
Fixing Left 4 Dead was easy. Add a new APFS volume, install Mojave, install Steam, move data files over, tell Steam to use them → no need to re-download everything. The nice thing about APFS volumes is that they share space, so I don’t have to think about how big each partition should be.
I’ve been neglecting the level editor a little bit. It didn’t get fully updated with IMGUI, mainly because it was a mess. It had gone through the entity system development with only quick updates here and there and it showed.
Last night I decided it was finally time to dig in. After an hour or two of cleanup and refactoring, things started looking much better. I wrote new entity & variant selection lists and fixed a few bugs related to Box2D. Overall line count went down, which is always a good sign. So much for custom UI components!
This was a big one. I switched to Box2D for collision detection & physics.
My old system was nothing fancy: axis-aligned bounding boxes, a “sliding” mechanism for collisions, sector based space subdivision. Worked well for Superforce. However there’s a lot more happening in Devastro 2. More bullets, more particles, more enemies, more complicated level design, player motion needs to be fluid around obstacles etc. Box2D seems like the right tool for that job.
First I had to rip out large amounts of old code both in the game and the editor. Everything was completely broken for over a week. Fortunately the Box2D integration went well and the game is now back up and running.
The Box2D API is nice and there’s plenty of documentation & example code.