topdown_game

Currently, this game is an animated sprite that can move within a set of boundaries on a map dynamically generated based on Tiled configuration.

On the TODO list:

• Bind TileMap to vertex and texture mapping buffers once during initial startup rather for every single frame refresh
• Fix how blending works so that the look of the TileMap is cleaner

Update 12/04/23

On the side, I have been learning how to use OpenGL APIs directly with C/C++ and ultimately rewrote this project from Rust to C/C++ over the course of a few months. Today is the day all the files got dropped in the repository

Building the Project

In order to build and run the project you will need to download these dependencies onto your local computer:

• STB an image parsing library
• GLEW you will have to install this as an application on your computer in order for it to be usable
• OpenGL this comes with most systems as it is a long existing legacy graphics API
• glm matrix and vector math
• glfw3 GLFW helper library
• nlohmann_json JSON parsing library

Notes for STB, glm, glfw3, and nlohmann_json

You should be able to create a lib folder on you computer ex: /usr/path/to/programming/folders/lib

Then you download your projects into that folder. Usually in the terminal I do cd /usr/path/to/programming/folders/lib This changes the folder I am in to the "lib" folder. Then while in the lib folder I clone the projects I need by doing git clone like so git clone https://github.com/g-truc/glm

In the end your lib folder should have these new folders:

• /usr/path/to/programming/folders/lib/glm
• /usr/path/to/programming/folders/lib/json
• /usr/path/to/programming/folders/lib/stb
• /usr/path/to/programming/folders/lib/glfw

Then you have to build each project using CMake and then link this project to the CMake config file by adding the CMake config file to the prefix path. Here is an example of flags you have to pass into CMake to make this project work:

-DSTB_LIBRARY=/usr/path/to/programming/folders/lib/stb
-DCMAKE_PREFIX_PATH=/usr/path/to/programming/folders/lib/json/cmake-build;/usr/path/to/programming/folders/lib/glm/cmake/glm

For clarification here are the files CMake will look at now to link glm to this project:

• /usr/path/to/programming/folders/lib/glm/cmake/glm/glmConfig-version.cmake
• /usr/path/to/programming/folders/lib/glm/cmake/glm/glmConfig.cmake

Sidenote: glfw3 was installed on my computer already, so CMake just picked it up from the installed apps folder

Notes on GLEW installation:

If you use a package manager like brew, you should be able to do something like brew install glew and then brew will install the package for you in a directory that CMake is likely to read from to build your project.

On Windows I suggest taking a look at this page for installing GLEW. You literally have to drop a glew DLL into your System32 folder in order for it to work.

Notes on how to build projects with CMake:

For one go to the CMake website and install CMake.

Then I would take a look at this doc page from SDL: Building SDL. You should be able to repeat the same steps it takes to build SDL for any library that needs to be linked to this project: glm, nlohmann_json, etc.

Fortunately or unfortunately, all projects have to be either built locally or if they are prebuilt they have to be built to target your local environment (aka Windows + x86 if you are using a Windows computer with an Intel chip).

credit

Credit for assets: Cup Nooble