A classical 2D Asteroid game.
You need to have a x64 computer and a compiler that supports C++20.
- Run the build-vs2022.bat. It will generate a vs2022 solution. If you want some other solution then you need to trivially edit this batch file on windows or manually run premake executable on your OS if it is not windows.
- Run the generated solution and compile!
- Implemented collision system using the concept of the grid. The grid is divided into equal sized rectangles and records which entities reside in that rectangle. Only the spheres around the entities in that rectangle are tested against each other for collision. The scheme used here is inspired by tiled deferred shading method for registering point lights in tiles.
- Implemented an event system.
- Implemented a delayed callback timer system using std::function and lambdas in order to register events such as start of animations of explosion and warp, delayed activation and deactivation of collision state of asteroids before spawning and in the middle of the explosion animation etc.
- Implemented time rewind up to 30 seconds back in time by keeping track of only the important data of each frame in a ring buffer in order to be able to reconstruct the frame again as we go back in time.
- Implemented the game using entity component architecture which makes use of composition more than inheritance. This results in a more scalable, modular, and reusable code than if we were to favour inheritance over composition. Not to mention diamond problem is most likely going to show up in that case.
- Implemented custom memory allocator that uses memory pools which are implemented using the following paper. This highly reduces memory fragmentation on the heap. This is mainly used at the moment to store the components.
- Implemented object pools in order to spawn bullets and asteroids from them. This prevents allocation on the heap for the mentioned entities at runtime which results in a far better performance. An object pool for each entity is allocated before the start of the game loop.
- Implemented a relatively smooth movement system for player to move the ship around with just holding left mouse button. The acceleration is determined by how far the custom mouse in the screen is from the ship. It accelerates towards it and deccelerates when it gets closer to it.
- Implemented a simple finite state machine for asteroids in order to change between passive and aggressive depending on the level we are in.
- Logging system to register different levels of severity and channels in both the output console of visual studio, a logging file, and the command line. It is worth noting that logging system only works if you are on windows and use visual studio. Otherwise you need to disable it and potentially comment out the header associated with outputing to visual studio console.
- Implemented an input system that wraps over SDL3 input events, tailored to our needs.
- Press key C -> Hides OS mouse and displays custom game mouse(this is assumed to have been pressed for every other control we mention in the next few lines to work)
- Hold left button of mouse -> Ship accelerates towards custom mouse and deccelerates when it is near it
- Move the mouse -> Rotates the ship
- Press right button of mouse 3 times consecutively -> Reveals OS mouse and hides custom game mouse, essentially reverse of pressing C
- Press key F -> Shoots bullets
- Hold key T -> Rewinds time in the same level
- The game is comprised of 2 levels. In order to win it, you have to complete each level successfully.
- In each level, in top left of the screen, you will find a small window that describes the seconds passed since the start of the level, score, and your health point.
- Each time an asteroid in either of the levels hits you, you will lose one unit of health point.
- You can rewind time up to maximum of 30 seconds back in time in each level. You cannot rewind back and go from level 2 to level 1. Each rewind only takes place in that same level you apply it.
- In the 1st level, you start with health 10 by default. In this level the asteroids are passive and move in random directions. You have to not die(health becoming 0) for 75 seconds and also destroy(score) at least 30 asteroids with your infinite supply of bullets.
- Ine the 2nd level, you start with health 10 by default again. In this level the asteroids become aggressive and pursue you continuously. You will have to survive for 120 seconds and destroy(score) at least 20 asteroids with your infinite supply of bullets.
- If you fail any of the levels, you will be prompted whether you would like to repeat it or exit the game.
Below are short gifs show casing gameplay of the game.
- Level 1
- Level 2
- Time rewind
- For complete show case of Level 1 gameplay: Level 1
- For complete show case of Level 2 gameplay: Level 2
- Implement black hole and time acceleration and decceleration system.
- Implement warping of space graphics technique.
- Implement better and more AIs. Perhaps add intelligent enemy spaceships and other types of asteroids as well.