Function TelcomDrawScreen

Descent3/TelCom.cpp:1707–1773

draws the telcom background, handles flickering lights, power button etc

#define NEON_OFF3_TIME 0.02
// draws the telcom background, handles flickering lights, power button etc
void TelcomDrawScreen(bool poweron, bool powerup) {
  static int neon_state = NEON_OFF;
  static float start_time = 0;
  static float off_time = 0, on_time = 0;

  if (powerup) {
    neon_state = NEON_OFF;
    start_time = timer_GetTime();
    off_time = myrand(5);
  }

  switch (neon_state) {
  case NEON_OFF:
    if (((timer_GetTime() - start_time) > off_time) && (myrand(100.0) >= NEON_STATEOFF)) {
      start_time = timer_GetTime();
      neon_state = NEON_ON1;
    }
    break;
  case NEON_ON1:
    TelcomStartSound(TCSND_LIGHTBULB);
    if ((timer_GetTime() - start_time) > NEON_ON1_TIME) {
      start_time = timer_GetTime();
      neon_state = NEON_OFF2;
    }
    break;
  case NEON_OFF2:
    if ((timer_GetTime() - start_time) > NEON_OFF2_TIME) {
      start_time = timer_GetTime();
      neon_state = NEON_ON2;
    }
    break;
  case NEON_ON2:
    if ((timer_GetTime() - start_time) > NEON_ON2_TIME) {
      start_time = timer_GetTime();
      neon_state = NEON_OFF3;
    }
    break;
  case NEON_OFF3:
    if ((timer_GetTime() - start_time) > NEON_OFF3_TIME) {
      start_time = timer_GetTime();
      neon_state = NEON_ON3;
      on_time = myrand(3);
    }
    break;
  case NEON_ON3:
    if (((timer_GetTime() - start_time) > on_time) && (myrand(100.0) < NEON_STATEOFF)) {
      start_time = timer_GetTime();
      neon_state = NEON_OFF;
      off_time = myrand(5);
    }
    break;
  }

  rend_SetFiltering(0);

  // draw telcom background
  rend_DrawChunkedBitmap(&Telcom_bitmap, 0, 0, 255);