Game Engine Architecture Third Edition Code Was Already

In this book, the broad range of technologies and techniques used by AAA game studios are each explained in detail, and their roles within a real industrial-strength game engine are illustrated.

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If You desing Your data good, algorithm usually emerge from them (if You dont count some numerical algorithms, like computing determinant).

Even if Im using existing libraries or frameworks like SDL, I still find myself having to make certain decisions for every game, like whether to use a state machine to manage menus, what kind of class to use for resource loading, etc.

Right now I spend more time rewriting my engines than I do writing the game itself, so Im hoping that by with a little forethough and planning Ill save myself time in the long run.

One thing I would recommend then is to check out the C4 engines architecture, that is; terathon.comc4engineimagesarchitecture.png It may be a lot higher-level than you need, but might give you some ideas;-).

Game Engine Architecture - This is another great book for engine design.

C4 Engine Layout - Taken from my comment, but this shows a high-level way of fitting each part of the engine together.

I just noticed, over the course of developing a few games, that common patterns do tend to come up a lot, so I wondered what other people used in their games.

Plus: It is often better to make your game engine component based than hierarchical, see cowboyprogramming.com20070105evolve-your-heirachy.

Game Engine Architecture Third Edition Code Was Already

It is using a 2D graphics engine so a lot of the rendering code was already taken care of for me.

They also contain code for calling the Game class and requesting a change to a different state.

I dont like this design because it makes it hard to loadunload resources on different levels, for example.

I would probably design this differently if I were starting over.

Deciding whether to do this, or have some kind of manager class take care of it for all the creatures is something I struggle with.

The AITask has its own logic loop that issues commands to the creature, and a termination condition that determines if the task was completed successfully or not.

All elements can have a number of child elements, which are rendered after their parents, and take over the keyboardmouse input.

The ResourceManager class is one of them, but I have with trouble with states too-- I end up with a huge proliferation of them, and copy a lot of code.

Especially in an RPG, where the player has lots of choices at any one time, you can end up with really complex state graphs.

Goes from NormalState - SelectSpellState - SelectTargetState - InvalidTargetState (if it failed) - DoSpellAnimationState - NormalState.

It very much depends on the type of game, target platform, constraints (time) etc.

As The communist duck mentioned the enginuity article on game dev helped me understand some parts of game architecture.

A lot of this follows Quake3s design philosophies (just in a more object orientated way).

It contains the CLI, timing management, OS specific code, and eventually networking layers etc.

It is generally faster to code and easier to mantain to use language which can do them (first class objects); for example Python (which also allows object oriented design), You will have slower speed thuough.