/**
 * Copyright (c) 2025 Dominic Masters
 * 
 * This software is released under the MIT License.
 * https://opensource.org/licenses/MIT
 */

#include "renderfps.h"
#include "display/render.h"
#include "display/ui/rendertext.h"
#include "time.h"
#include "game.h"

float_t RENDER_FPS_AVG = -1.0f;
float_t RENDER_TPS_AVG = -1.0f;

void renderFPSDraw(void) {
  
  if(TIME.delta > 0) {
    float_t fps = 1.0f / TIME.realDelta;

    if(RENDER_FPS_AVG == -1.0f) {
      RENDER_FPS_AVG = fps;
    } else {
      RENDER_FPS_AVG = (RENDER_FPS_AVG + fps) / 2.0f;
    }
  }
  
  if(TIME.time != TIME.lastTick) {
    float_t timeSinceLastTick = TIME.realTime - TIME.lastTick;
    float_t tps = 1.0f / timeSinceLastTick;

    if(RENDER_TPS_AVG == -1.0f) {
      RENDER_TPS_AVG = tps;
    } else {
      RENDER_TPS_AVG = (RENDER_TPS_AVG + tps) / 2.0f;
    }
  }

  char_t buffer[64];
  snprintf(buffer, sizeof(buffer), "%.1f/%.1f", RENDER_FPS_AVG, RENDER_TPS_AVG);

  int32_t width, height;
  renderTextMeasure(buffer, &width, &height);
  renderTextDraw(RENDER_WIDTH - width, 0, buffer, 0x00, 0xFF, 0x00);
}