/*
  Simple "Hello World" for ILI9341 LCD

  https://wokwi.com/arduino/projects/308024602434470466
*/

#include "SPI.h"
#include "Adafruit_GFX.h"
#include "Adafruit_ILI9341.h"

#define WINDOW_SIZE 11
#define TFT_DC 9
#define TFT_CS 10
#define ROTATION 1
Adafruit_ILI9341 tft = Adafruit_ILI9341(TFT_CS, TFT_DC);


int INDEX = 1;
float SUM = 0;
float READINGS[WINDOW_SIZE];
float AVERAGED = 0.0;
float VALUE = 0.0;
float TOTALTIME = 0.00;
unsigned long startMicros = 0;  //some global variables available anywhere in the program
unsigned long currentMicros = 0;

int triggerPin = 2;
int stopPin = 3;
int counterReset = 5;
int hitPin = 4;
int counter = 0;


//Counter location reset rectangle
int counterLocationX = 250;
int counterLocationY = 5;
int counterSizeX = 45;
int couterSizeY = 20;

//Shot time location reset rectangle
int timeLocationX = 5;
int timeLocationY = 65;
int timeSizeX = 280;
int timeSizeY = 250;

//Hit location reset rectangle
int hitLocationX = 60;
int hitLocationY = 80;
int hitSizeX = 250;
int hitSizeY = 150;

//Average location reset rectangle
int averageLocationX = 145;
int averageLocationY = 200;
int averageSizeX = 75;
int averageSizeY = 20;

int ST1X = 5, ST1Y = 65;
int ST2X = 75, ST2Y = 70;


void stopTimer();


void setup() {
  Serial.begin(115200);
  tft.begin();
  tft.setRotation(ROTATION);

  tft.fillScreen(ILI9341_BLACK);

  //Hit Counter
  tft.setCursor(5, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("Hit Count:");
  tft.setCursor(250, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println(counter);

  //Waiting for Trigger

  tft.setCursor(5, 25);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(2);
  tft.println("Waiting for trigger...");

  pinMode(triggerPin, INPUT_PULLUP);
  pinMode(counterReset, INPUT_PULLUP);
  pinMode(stopPin, INPUT_PULLUP);
  pinMode(hitPin, INPUT_PULLUP);


}

void loop() {

  if (digitalRead(triggerPin) == LOW) {
    startMicros = micros();
    delay(250);
  }

  if (digitalRead(stopPin) == LOW) {
    currentMicros = micros();
    delay(250);
    Serial.println("Timer Stop");
    stopTimer();

  }

  if (digitalRead(hitPin) == LOW) {
    currentMicros = micros();
    delay(250);
    Serial.println("HIT!");
    targetHit();

  }

  if (digitalRead(counterReset) == LOW) {
    startMicros = micros();
    delay(250);
    Serial.println("Reset");
    resetCounter();
  }

  if (INDEX == 2) {
    tft.setCursor(5, 65);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(30, 65);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[1], 4);
    tft.setCursor(100, 65);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 3) {
    tft.setCursor(5, 85);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(30, 85);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[2], 4);
    tft.setCursor(100, 85);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 4) {
    tft.setCursor(5, 105);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(30, 105);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[3], 4);
    tft.setCursor(100, 105);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 5) {
    tft.setCursor(5, 125);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(30, 125);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[4], 4);
    tft.setCursor(100, 125);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 6) {
    tft.setCursor(5, 145);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(30, 145);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[5], 4);
    tft.setCursor(100, 145);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 7) {
    tft.setCursor(160, 65);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(185, 65);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[6], 4);
    tft.setCursor(255, 65);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 8) {
    tft.setCursor(160, 85);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(185, 85);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[7], 4);
    tft.setCursor(255, 85);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 9) {
    tft.setCursor(160, 105);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(185, 105);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[8], 4);
    tft.setCursor(255, 105);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 10) {
    tft.setCursor(160, 125);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX - 1));
    tft.setCursor(185, 125);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[9], 4);
    tft.setCursor(255, 125);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

  if (INDEX == 0) {
    tft.setCursor(160, 145);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(2);
    tft.println((INDEX + 10));
    tft.setCursor(185, 145);
    tft.setTextColor(ILI9341_WHITE);
    tft.setTextSize(2);
    tft.println(READINGS[10], 4);
    tft.setCursor(255, 145);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(2);
    tft.println(" s");

  }

}

void stopTimer() {
  counter++;

  TOTALTIME = (float(currentMicros - startMicros) / 1000000);
  //SUM = SUM - READINGS[INDEX];       // Remove the oldest entry from the sum *********************************************************************
  VALUE = TOTALTIME;// Read the next sensor value
  READINGS[INDEX] = VALUE;
  SUM = SUM + VALUE;
  // Increment the index, and wrap to 0 if it exceeds the window size

  AVERAGED = SUM / INDEX;      // Divide the sum of the window by the window size for the result
  Serial.print (INDEX); Serial.print(". ");
  Serial.print(VALUE, 4);
  Serial.print(",");
  Serial.println(AVERAGED, 4);


  tft.fillRect(averageLocationX, averageLocationY, averageSizeX, averageSizeY, ILI9341_BLACK);

  tft.setCursor(45, 200);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(2);
  tft.println("Average:");
  tft.setCursor(145, 200);
  tft.setTextColor(ILI9341_WHITE);
  tft.setTextSize(2);
  tft.println(AVERAGED, 4);
  tft.setCursor(215, 200);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println(" s");




  INDEX = (INDEX + 1) % WINDOW_SIZE;

  Serial.print("New index #: ");
  Serial.println(INDEX);
  /* received a packet
    Serial.println("Received packet '");
    tft.fillScreen(ILI9341_BLACK);

    tft.setCursor(ST1X, ST1Y);
    tft.setTextColor(ILI9341_RED);
    tft.setTextSize(3);
    tft.println("Shot time:");

    tft.setCursor(ST2X, ST2Y);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(3);
    tft.println(TOTALTIME, 4);
    tft.setCursor(175, 105);
    tft.setTextColor(ILI9341_GREEN);
    tft.setTextSize(3);
    tft.println(" s");
  */



  delay(10);

  Serial.println("Timer Reset.");
  Serial.println("--------------------------------------------------------------------------------------------------------------------");

  tft.fillRect(counterLocationX, counterLocationY, counterSizeX, couterSizeY, ILI9341_BLACK);

  //Hit Counter
  tft.setCursor(5, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("Hit Count:");
  tft.setCursor(250, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println(counter);

  startMicros = 0;

}


void targetHit() {
  counter++;

  tft.setCursor(60, 80);
  tft.setTextColor(ILI9341_RED);
  tft.setTextSize(9);
  tft.println("HIT!");

  delay(1500);
  tft.fillRect(hitLocationX, hitLocationY, hitSizeX, hitSizeY, ILI9341_BLACK);
  tft.fillRect(counterLocationX, counterLocationY, counterSizeX, couterSizeY, ILI9341_BLACK);

  //Hit Counter
  tft.setCursor(5, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("Hit Count:");
  tft.setCursor(250, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println(counter);

}

void resetCounter() {


  counter = 0;
  INDEX = 1;
  AVERAGED = 0;
  VALUE = 0;
  startMicros = 0;  //some global variables available anywhere in the program
  currentMicros = 0;
  TOTALTIME = 0.00;
  SUM = 0;
  float READINGS[INDEX];


  tft.fillRect(counterLocationX, counterLocationY, counterSizeX, couterSizeY, ILI9341_BLACK);
  tft.fillRect(timeLocationX, timeLocationY, timeSizeX, timeSizeY, ILI9341_BLACK);

  //Hit Counter
  tft.setCursor(5, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println("Hit Count:");
  tft.setCursor(250, 5);
  tft.setTextColor(ILI9341_GREEN);
  tft.setTextSize(2);
  tft.println(counter);


  //counterLocationX = 20;
  //counterLocationY = 20;
  //counterSizeX = 20;
  //couterSizeY = 20;

}