refa Use Vulkan for graphics

This is a partial refactory. Some functionalities implemented in
SDL were removed and need reimplementation.

1 files changed, 103 insertions, 0 deletions

diff --git a/src/core.hpp b/src/core.hpp
new file mode 100644
index 0000000..117a81f
--- /dev/null
+++ b/src/core.hpp
@@ -0,0 +1,103 @@
+/*
+ * Copyright 2022 Frederico de Oliveira Linhares
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef CANDY_GEAR_CORE_H
+#define CANDY_GEAR_CORE_H 1
+
+#define CANDY_GEAR_VERSION_MAJOR 0
+#define CANDY_GEAR_VERSION_MINOR 1
+#define CANDY_GEAR_VERSION_PATCH 0
+
+#define DATA_DIR "/usr/local/share/candy_gear"
+
+#include <random>
+
+#include <mruby.h>
+#include <mruby/class.h>
+#include <mruby/compile.h>
+#include <mruby/data.h>
+#include <mruby/dump.h>
+#include <mruby/variable.h>
+
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_vulkan.h>
+#include <SDL2/SDL_image.h>
+#include <SDL2/SDL_mixer.h>
+
+#include "command.hpp"
+
+#include "vk/device.hpp"
+#include "vk/graphics_pipeline.hpp"
+#include "vk/swapchain.hpp"
+
+extern std::random_device random_seed;
+extern std::mt19937 random_number_generator;
+
+/**
+ * The Core class stores all global states that the engine needs to work.
+ * Global variables are not evil if you use them carefully.
+ */
+struct cg_sCore
+{
+  static const CommandChain loader;
+
+  const char *config_file;
+
+  /// Text displayed in the game window.
+  char *game_name;
+
+  /**
+   * @{
+   * This is the amount of pixel the games use to render a buffer. The image in
+   * this buffer is then rendered to the screen.
+   */
+  uint32_t game_width, game_height;
+  /// @}
+
+  /**
+   * @{
+   * This is the ammount of pixel that the games uses when rendering to the
+   * screen.
+   */
+  uint32_t screen_width, screen_height;
+  /// @}
+
+  int game_version_major, game_version_minor, game_version_patch;
+
+  Uint32 fps;
+  Uint32 max_frame_duration_ms;
+
+  SDL_Window *window;
+
+  VkSurfaceKHR window_surface;
+  VkInstance vk_instance;
+
+#ifdef DEBUG
+  VkDebugUtilsMessengerEXT vk_callback;
+#endif
+
+  // Vulkan devices.
+  std::vector<VK::Device> vk_devices;
+  VK::Device *vk_device_with_swapchain;
+  VK::Swapchain *vk_swapchain;
+  VK::GraphicsPipeline *vk_graphics_pipeline;
+
+  bool quit_game;
+};
+
+extern cg_sCore cg_core;
+
+#endif /* CANDY_GEAR_CORE_H */