PA199 - Advanced Game Development
Project Q&A
Q: Is the time in a seminar sufficient for completion of the work for the current week?
A: No. You are supposed to finish the implementation as homework. Use the time in the
seminars for questions so that you are heading the right direction for the work at home.
Q: I've created a static library for graphics functions of my project. But, when I try to include
OpenGL by the directive:
#include "glad/glad.h"
the header file is not found and I get errors. How to fix that?
A: Open the CMakeLists.txt file of your graphics library and append there the following code:
find_package(glad CONFIG REQUIRED)
target_link_libraries(<name-of-your-graphics-library> PUBLIC
glad::glad)
where <name-of-your-graphics-library> must be replaced by the name of your library (i.e. the
name you write to "add_library" command).
Q: I have a static library, where I use the type “std::filesystem::path”. Despite the fact that I
include the header <filesystem> I get this compile error:
error C2039: 'filesystem': is not a member of 'std'
How can I fix this issue?
A: The problem is that your library is compiled with the default C++ standard of the compiler,
which is lower than C++17. The main executable of your game actually uses C++20 standard.
In case you want to fix the issue just in that particular library, then do this: Open the
“CMakeLists.txt” file of your library insert the following code anywhere below the
“add_library” command:
if(MSVC)
target_compile_options(<my-lib-name> PUBLIC /std:c++20)
endif()
where <my-lib-name> must be replaced by the name of the library you defined inside the
“add_library” command.
In case you want to use the C++ standard 20 everywhere (i.e., in all your libraries), then do this:
Open the “CMakeLists.txt” file in the root directory of the entire repository and insert the
following code anywhere between commands “cmake_minimum_required” and “project”:
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
Q: I want to load shaders and/or textures from the disk. What directory should I put them into
and how do I get that path in runtime?
A: The shaders and textures must be stored under the corresponding directory under
<project-root-dir>/courses/PA199/project/data
where <project-root-dir> is the project's root directory, i.e., where you cloned the repository. You
can obtain a path to the data (shaders/textures) using the the field
lecture_folder_path
of the class “Application” (in fact that field is in the base class). So, the full path to the directory
of shaders you can use this C++ code:
lecture_folder_path / "data" / "shaders"
and the full path to the directory with textures:
lecture_folder_path / "data" / "textures"
NOTE: Example loading of shaders and textures is already available in the file
“application.cpp”.