cs381/as3/README.md

Building and Running

Clone the repository, navigate to the root of the project, and initialize the submodules:

git clone https://github.com/humanoidsandvichdispenser/cs381.git
cd cs381
git submodule update --init --recursive

Navigate to the as3 directory, create a build directory, and run CMake to generate the build files:

cd as3
mkdir -p build
cd build
cmake ..

Compile the code using make:

make

This should create an executable named as3 in the build directory. You can run the executable with the following command:

./as3

Instructions on how to use the program

Use W and S to accelerate the penguin forward and backward. Use A and D to change heading direction. The penguin will only accelerate in the direction facing and will retain its velocity even when not accelerating or changing direction.

Readme Question

dt is delta time, which is the time elapsed between each frame, which can be found by taking the current time and subtracting the time from the previous frame. Raylib provides a function GetFrameTime() that returns the time elapsed since the last frame, which can be used to calculate dt. By using dt, it ensures that physics calculations are independent of frame rate, since otherwise the velocity would be in terms of units per frame rather than units per second. By multiplying the velocity by dt, it converts the velocity to units per second, allowing for consistent movement regardless of the frame rate.