ruble.cc

#include "ruble.h"

Ruble::Ruble(GLFWwindow* wnd) : m_window(wnd) {
  glfwMakeContextCurrent(m_window);

  glMatrixMode(GL_PROJECTION);
  glLoadIdentity();
  glOrtho(0, 640, 480, 0, -1, 1);

  glEnable(GL_BLEND);
  glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

  emitter = new Emitter();
}

Ruble::~Ruble() {
  delete emitter;
}

void Ruble::start() {
  while (!glfwWindowShouldClose(m_window)) {
    glClearColor(0, 0, 0, 1);
    glClear(GL_COLOR_BUFFER_BIT);

    double x, y;
    glfwGetCursorPos(m_window, &x, &y);


    // mouse lines
    glBegin(GL_LINES);
      glColor4f(0.56f, 0.34f, 0.84f, 1);
      glVertex2f(320.f, 240.f);
      glVertex2f(x, y);

      glColor4f(0.56f, 0.56f, 0.56f, 0.5f);
      glVertex2f(320.f, 240.f);
      glVertex2f(x, 240.f);
      glVertex2f(x, y);
      glVertex2f(x, 240.f);
    glEnd();

    glColor4f(1, 1, 1, 1);
    if (glfwGetKey(m_window, GLFW_KEY_S) == GLFW_PRESS) {
      if (!toggle) {
        toggle = true;
        double angle = atan2(x - 320, y - 240);
        for (size_t i = 0; i < 360; i++) {
          emitter->push(Particle(vec2(320.f, 240.f), vec2(sin(angle), cos(angle)), 100.f));
        }
      }
    }
    if (glfwGetKey(m_window, GLFW_KEY_S) == GLFW_RELEASE) {
      toggle = false;
    }
    if (glfwGetKey(m_window, GLFW_KEY_R) == GLFW_PRESS) {
      emitter->clear();
    }

    glBegin(GL_POINTS);
      emitter->update(); // glVertex2f
    glEnd();

    glfwSwapBuffers(m_window);
    glfwPollEvents();
  }
}

void Ruble::update() {
  
}

void Ruble::draw() {

}