Welcome to my Capstone Project for my Udacity's C++ Nanodegree!
For this project, I chose to improve the SDL game Snake inspired by this StackOverflow question and you can find Udacity's original repo here.
I will add/have added the following features to the game:
🐍 The snakes dies when it runs into the edges of the grid, instead of going through
🐍 Replay button to restart the game from zero
🐍 Save the latest 5 highest scores
🐍 There are four different types of food that affect the snake! The bad foods timeout after a couple of seconds. The meaning of every food is as follows:
🟢 Good food that will increase your score, the snake grows and the speed will go up
🔵 Good food that will give you one extra live! You can gather up to 4 lives
🟠 The snake will slow down and shrink one block. You lose 1 point from your score
🔴 Bad food that will take one live from the snake!
The folder and file structure of the project is as follows:
📂 cmake folder where extra .cmake files are stored. FindSDL2_image.cmake file helps locate the SDL and SDL_Image libraries in the computer
📂 imgs folder with the images for the replay screen and the readme
📂 include folder with all the .hpp files
📂 src folder with all the .cpp files
📂 data folder contains the .txt file with the 5 highest scores in the game
The class structure is as follows:
🐍 A Snake class defined in the file snake.hpp and instantiated in the file snake.cpp. This class handles all the snake features, such as size, life status, body, head location, speed and reset.
🎮 A Controller class defined in the file controller.cpp and instantiated in the file controller.cpp. This class handles all the user interactions (keys pressed and mouse events).
🖥 A Renderer class defined in the file renderer.cpp and instantiated in the file renderer.cpp. This class takes care of the graphics of the game (colour of the snake, the food, creating the window, etc.).
👾 A Game class defined in the file game.cpp and instantiated in the file game.cpp. This class handles the game loop (input, update, render).
The main.cpp file creates objects type Game, Renderer and Controller, to interact with each other.
👉 macOS 12.1 Monterey with 8-Core Intel Core i7 chip
👉 Homebrew 3.3.5
👉 cMake 3.21.3
👉 GNU Make 3.81
👉 C++ 17
👉 Apple clang version 13.0.0
👉 SDL 2.0.18. Download SDL from the official website.
👉 SDL_Image 2.0
Run the following command in the terminal
sudo apt-get install libsdl2-image-dev
Download the binary (.dmg) from here and wait for it to download. Then move the SDL2_image.framework folder to /Library/Frameworks/.
If you do not have the correct permission in the computer (i.e. root or admin), read the ReadMe.txt inside the downloaded .dmg
Create a build folder and change to that directory
mkdir build && cd build
Within the build directory run
cmake .. && make
The executable is within the build directory. You can run it as follows
./Snake
| Group | Rubric | File | Line Numbers |
|---|---|---|---|
| Loops, Functions, I/O | The project demonstrates and understanding of C++ functions and control structures | snake.hpp renderer.hpp |
8 11 14 23 31 |
| The project reads data from a file and process the data, or the program writes data to a file | game.cpp | 141 160 | |
| The project accepts user input and process the input | controller.cpp | 17 | |
| Object Oriented Programming | The project uses Object Oriented Programming techniques | main.cpp | 18 19 20 21 |
| Classes use appropriate access specifiers for class members | snake.hpp food.hpp controller.hpp renderer.hpp game.hpp |
10 46 12 26 35 47 10 14 33 43 20 33 |
|
| Class constructors utilise member initialisation lists | controller.cpp snake.hpp food.cpp game.cpp renderer.cpp |
6 21 20 5 6 |
|
| Classes encapsulate behaviour | snake.hpp food.hpp |
23-40 48-49 13-22 36-45 |
|
| Overloaded functions allow the same function to operate on different parameters | renderer.hpp | 39 40 | |
| Memory Management | The project makes use of references in function declarations | renderer.hpp game.hpp controller.hpp food.hpp snake.hpp |
40 25 11 22 44 45 49 |
| The project uses smart pointers instead of raw pointers | renderer.hpp game.hpp controller.hpp food.hpp |
40 45 46 47 34 11 22 48 |
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