Recently I restored the font used in C-Dogs SDL to the one used in the original C-Dogs. The reason why they were replaced in the first place was because the original graphics weren’t open source, so I was looking for alternatives. A few years back the author of C-Dogs agreed to open source the original graphics, and I’ve only just gotten around to restoring the font.

But that’s not what this post is about! I want you to take a look at the C-Dogs font:

It’s actually a pretty neat font. Most of the letters are just 3x5 pixels (some wider or taller), but with a few tricks they look super legible for their size. Here I’ll show you some of the tricks used to make pixel fonts really legible.

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Over the years I’ve found myself referring back to the same handful of gamedev articles, because their advice is useful and timeless. I’ve decided to collect them here in one place for easy reference. Hope you enjoy!

Reducing Visual Confusion In Your Game by Peter Angstadt

A lot of game devs know how to make good-looking screenshots but the game itself is unreadable because everything looks too busy, too dark or too washed out. This article goes into the visual design theory of why, and really easy ways of improving the readability of your game.

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I love guns in video games; there’s a lot that look and sound really cool. Many games feature gun designs that are so iconic they become part of the identity of the game: there’s the versatile gravity gun in Half Life 2, the beefy assault rifle in Halo, clever portal gun in Portal, and beastly lancer in Gears of War.

Some guns are not only iconic in games, but in movies, even in real life. James Bond’s favourite pistol, the Walther PPK. Or the AK-47, perhaps the world’s most famous assault rifle, well-known in Counter-Strike and many other games, as well as real life - even the flag of Mozambique. Needless to say, their appeal is universal.

Let’s say you want to design some cool guns for your game. How would you do it? A lot of first-time designers might take bits they like and mash them together. There’s a lot of art kits and even some programs that allow you to do this. Unfortunately, the result often doesn’t make sense, and looks inconsistent.

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SDL_RenderCopyEx is a function in SDL2 that allows you to rotate, scale and flip sprites. But how do you use it? I was wondering the same as I wanted to add bullet trails to C-Dogs SDL. The official documentation tells you what parameters to use but not how they will look. So I just tried it out myself:

sdl2-rendercopyex-demo

This is a simple demo project which uses SDL_RenderCopyEx to rotate, scale and flip a sprite. There’s also a center parameter which controls the center of rotation, which defaults to the center of the sprite you are rendering.

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Some of the most fun and interesting games feature three factions. The number 3 is a magic number, allowing for interesting asymmetries. You often see factions that are unique, provide lots of gameplay variety, and are flavourful too. But how do you mechanically balance three radically different factions? And how do you come up with three thematically unique factions?

It’s not easy. With just two factions, balance is a lot easier, as you simply buff one and nerf the other, but with three (or more) factions, anything you do could inadvertently affect the balance with the third faction.

Duality

One common method is to take a classic duality, and have two factions represent each extreme, with the third, “balanced” faction in the middle. TVTrope’s article on the subject mentions the classic duality of powerhouse/subversive. So one faction is a powerhouse, favouring raw strength, the second is subversive, favouring clever tactics and engagements, and the third balanced between the two.

How does this work? The important thing is that there is no inherent advantage to either side of this duality. The powerhouse is powerful but slow and predictable; the subversive is weak but fast and flexible.

A great example of this is in Westwood’s Dune RTS games and the unique tanks of each faction. The “evil”, powerhouse Harkonnen have the Devastator, the most powerful in the game but slow and ponderous. The “insidious”, subversive Ordos have the deviator, a tank which has no attack but can temporarily take over enemy tanks. The “noble”, balanced Atreides have the sonic tank, which apart from having a unique attack, is otherwise equivalent to a heavy tank.

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