the revival, entityx

1 files changed, 71 insertions, 0 deletions

diff --git a/src/window.cpp b/src/window.cpp
new file mode 100644
index 0000000..4a060de
--- /dev/null
+++ b/src/window.cpp
@@ -0,0 +1,71 @@
+#include <window.hpp>
+
+#include <config.hpp>
+
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_mixer.h>
+
+constexpr const char* WINDOW_TITLE  = "gamedev";
+
+WindowSystem::WindowSystem(void)
+{
+    // attempt to initialize SDL
+    if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) != 0) {
+        std::cout << "SDL was not able to initialize! Error: " << SDL_GetError();
+        abort();
+    }
+    atexit(SDL_Quit);
+
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
+    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 1);
+
+    // attempt to initialize SDL_image
+    if (!(IMG_Init(IMG_INIT_PNG | IMG_INIT_JPG) & (IMG_INIT_PNG | IMG_INIT_JPG))) {
+        std::cout << "Could not init image libraries! Error: " << IMG_GetError();
+        abort();
+    }
+    atexit(IMG_Quit);
+
+    // attempt to initialize SDL_mixer
+    if (Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 2, 2048) < 0) {
+        std::cout << "SDL_mixer could not initialize! Error: " << Mix_GetError();
+        abort();
+    }
+    Mix_AllocateChannels(8);
+    atexit(Mix_Quit);
+
+    // create the SDL window object
+    window = SDL_CreateWindow(WINDOW_TITLE,
+                              SDL_WINDOWPOS_UNDEFINED,	// Spawn the window at random (undefined) x and y coordinates
+                              SDL_WINDOWPOS_UNDEFINED,	//
+                              game::SCREEN_WIDTH,
+                              game::SCREEN_HEIGHT,
+                              SDL_WINDOW_SHOWN | SDL_WINDOW_OPENGL
+                              );
+
+    if (window == nullptr) {
+        std::cout << "The window failed to generate! SDL_Error: " << SDL_GetError();
+        abort();
+    }
+
+    // create the OpenGL object that SDL provides
+    if ((glContext = SDL_GL_CreateContext(window)) == nullptr) {
+        std::cout << "The OpenGL context failed to initialize! SDL_Error: " << SDL_GetError();
+        abort();
+    }
+}
+
+WindowSystem::~WindowSystem(void)
+{
+    SDL_GL_DeleteContext(glContext);
+    SDL_DestroyWindow(window);
+}
+
+void WindowSystem::update(entityx::EntityManager &en, entityx::EventManager &ev, entityx::TimeDelta dt)
+{
+    (void)en;
+    (void)ev;
+    (void)dt;
+
+    SDL_GL_SwapWindow(window);
+}