Method RenderHUD

endless-tunnel/app/src/main/cpp/play_scene.cpp:605–656

}

void PlayScene::RenderHUD() {
  float aspect = SceneManager::GetInstance()->GetScreenAspect();
  glm::mat4 orthoMat = glm::ortho(0.0f, aspect, 0.0f, 1.0f);
  glm::mat4 modelMat;
  glm::mat4 mat;

  glDisable(GL_DEPTH_TEST);

  // render score digits
  int i, unit;
  static char score_str[6];
  int score = GetScore();
  for (i = 0, unit = 10000; i < 5; i++, unit /= 10) {
    score_str[i] = '0' + (score / unit) % 10;
  }
  score_str[i] = '\0';

  mTextRenderer->SetFontScale(SCORE_FONT_SCALE);
  mTextRenderer->RenderText(score_str, SCORE_POS_X, SCORE_POS_Y);

  // render current sign
  if (mSignText) {
    modelMat = glm::mat4(1.0f);
    float t = Clock() - mSignStartTime;
    if (t < SIGN_ANIM_DUR) {
      float scale = t / SIGN_ANIM_DUR;
      modelMat = glm::scale(modelMat, glm::vec3(1.0f, scale, 1.0f));
    } else if (mSignTimeLeft < SIGN_ANIM_DUR) {
      float scale = mSignTimeLeft / SIGN_ANIM_DUR;
      modelMat = glm::scale(modelMat, glm::vec3(1.0f, scale, 1.0f));
    }

    mTextRenderer->SetMatrix(modelMat);
    mTextRenderer->SetFontScale(SIGN_FONT_SCALE);
    mTextRenderer->RenderText(mSignText, aspect * 0.5f, 0.5f);
    mTextRenderer->ResetMatrix();
  }

  // render life icons
  glLineWidth(LIFE_LINE_WIDTH);
  float lifeX = LIFE_POS_X < 0.0f ? aspect + LIFE_POS_X : LIFE_POS_X;
  modelMat = glm::translate(glm::mat4(1.0), glm::vec3(lifeX, LIFE_POS_Y, 0.0f));
  modelMat = glm::scale(modelMat, glm::vec3(1.0f, LIFE_SCALE_Y, 1.0f));
  int ubound = (mBlinkingHeart && BlinkFunc(0.2f)) ? mLives + 1 : mLives;
  for (int i = 0; i < ubound; i++) {
    mat = orthoMat * modelMat;
    mTrivialShader->RenderSimpleGeom(&mat, mLifeGeom);
    modelMat = glm::translate(modelMat, glm::vec3(LIFE_SPACING_X, 0.0f, 0.0f));
  }

  glEnable(GL_DEPTH_TEST);
}

void PlayScene::RenderMenu() {
  float aspect = SceneManager::GetInstance()->GetScreenAspect();