From 469a84c10ba60fba4a513c1b1a0eea600cd7b22f Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Wed, 10 May 2017 18:44:51 +0500
Subject: 2017-05-10

---
 graphics/Display.cpp | 103 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 graphics/Display.cpp

(limited to 'graphics/Display.cpp')

diff --git a/graphics/Display.cpp b/graphics/Display.cpp
new file mode 100644
index 0000000..01dd903
--- /dev/null
+++ b/graphics/Display.cpp
@@ -0,0 +1,103 @@
+#include <iostream>
+#include "Display.hpp"
+#include "Shader.hpp"
+
+Display *Display::instance = nullptr;
+
+Display::Display(int w, int h, std::string title, World *worldPtr) {
+    if (instance != nullptr)
+        throw 516;
+    instance = this;
+    world = worldPtr;
+    //GLFW
+    glfwInit();
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+    window = glfwCreateWindow(w, h, title.c_str(), nullptr, nullptr);
+    if (window == nullptr) {
+        std::cerr << "Can't create GLFW window" << std::endl;
+        glfwTerminate();
+        throw 517;
+    }
+    glfwMakeContextCurrent(window);
+    glfwSetKeyCallback(window, &Display::callback_key);
+    //GLEW
+    glewExperimental = GL_TRUE;
+    GLenum glewStatus = glewInit();
+    if (glewStatus != GLEW_OK) {
+        std::cerr << "Can't initialize GLEW: " << glewGetErrorString(glewStatus) << std::endl;
+        throw 518;
+    }
+    int width, height;
+    glfwGetFramebufferSize(window, &width, &height);
+    glViewport(0, 0, width, height);
+}
+
+Display::~Display() {
+    instance = nullptr;
+    glfwTerminate();
+}
+
+bool Display::IsClosed() {
+    return false;
+}
+
+void Display::SetPlayerPos(float x, float y) {
+
+}
+
+void Display::MainLoop() {
+    Shader vertexShader("./graphics/simpleVS.vs");
+    Shader fragmentShader("./graphics/simpleFS.fs", false);
+    ShaderProgram program;
+    program.Attach(vertexShader);
+    program.Attach(fragmentShader);
+    program.Link();
+
+    GLfloat vertices[] = {
+            -0.5f, -0.5f, 0.0f,
+            0.5f, -0.5f, 0.0f,
+            0.0f, 0.5f, 0.0f
+    };
+    GLuint VBO;
+    glGenBuffers(1, &VBO);
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glBufferData(VBO, sizeof(vertices), vertices, GL_STATIC_DRAW);
+
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid *) 0);
+    glEnableVertexAttribArray(0);
+
+    GLuint VAO;
+    glGenVertexArrays(1, &VAO);
+
+    glBindVertexArray(VAO);
+    // 2. Копируем наш массив вершин в буфер для OpenGL
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+    // 3. Устанавливаем указатели на вершинные атрибуты
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid *) 0);
+    glEnableVertexAttribArray(0);
+    //4. Отвязываем VAO
+    glBindVertexArray(0);
+
+    while (!glfwWindowShouldClose(window)) {
+        glfwPollEvents();
+
+        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        glUseProgram((GLuint) program);
+        glBindVertexArray(VAO);
+        glDrawArrays(GL_TRIANGLES, 0, 3);
+        glBindVertexArray(0);
+
+        glfwSwapBuffers(window);
+    }
+}
+
+void Display::callback_key(GLFWwindow *window, int key, int scancode, int action, int mode) {
+    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
+        glfwSetWindowShouldClose(instance->window, GL_TRUE);
+}
-- 
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