| Name | RA |
|---|---|
| Pietro Di Consolo Gregorio | 11038416 |
| Beatriz Libanio de Araujo Yordaky | 11013714 |
ABC Invaders is a 2D game developed with the ABCg framework, developed for the Computer Graphics course at UFABC.
The game is inspired by Space Invaders, originally developed in 1978, and was implemented with C++ programming language and OpenGL. The player controls a laser cannon able to move horizontally on the screen, with the objective to shoot all the aliens, that can also shoot the player (and then the game is over). The aliens move both horizontally and vertically, constantly approching the laser cannon.
The main libraries used by ABCg are: SDL to handle inputs and outputs, GLEW to access the OpenGL graphical API and emscripten to generate the application's WebAssembly.
The game begins on Playing stage, with the cannon free to move (A/D or ←/→ keys) and fire (space or left mouse button) and the aliens releasing their ray shots while moving. When the player destroys all the aliens the game ends with a message of victory (Win state), but when the player is hit by an alien ray, or the alien itself, the game is over (GameOver state). In both cases the game restarts within five seconds.
The game components are: cannon (player), cannon bullets, aliens and aliens bullets (rays). Each component is composed by triangles forming small rectangles that shapes the final image (see the example bellow). All components have their logic, such as velocities, colors and behaviour, implemented in the respective header and class files.
Figura 1. Example of component drawn with triangles.
The openglwindow component is responsible to centralize the game control, calling all components subroutines, the game state checkup routine and the colision routine. The colisions tracked in the game are:
cannonvsrayscannonvsaliensbulletsvsaliensbulletsvsrays
Build the application with build.sh (Linux/macOS) or build.bat (Windows) and run the executable file created at abcg/build/bin/abcinvaders.
ABCg is a framework developed by Harlen Batagelo for the Computer Graphics course at UFABC, and is licensed under the MIT License. See LICENSE for more information.