#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

#define OLED_WIDTH 128 
#define OLED_HEIGHT 64 

Adafruit_SSD1306 oled(OLED_WIDTH, OLED_HEIGHT, &Wire, -1);

const int plus1 = 2;
const int plus3 = 3;
const int plus5 = 4;

const int minus1 = 10;
const int minus3 = 9;
const int minus5 = 8;

const int reset25 = 5;
const int reset30 = 7;
const int reset0 = 6;

const int singledigi = 30;
const int doubledigi = 50; 

int life25 = 25;
int life30 = 30;
int life0 = 0;

int delaypress = 250;

int currentlife=0;

int State_plus1 = 0; 
int State_plus3 = 0; 
int State_plus5 = 0; 

int State_minus1 = 0; 
int State_minus3 = 0; 
int State_minus5 = 0; 

int State_reset25 = 0; 
int State_reset30 = 0; 
int State_reset0 = 0;

void setup() {
 
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
  Serial.println(F("SSD1306 allocation failed")); while (true);}

  delay(1000);       
  oled.clearDisplay();

  oled.setTextSize(3);          
  oled.setTextColor(WHITE);     
  oled.setCursor(20, 20);      
  oled.println("LIFE");
  oled.setCursor(0, 42);      
  oled.println("COUNTER");
  oled.setTextSize(1);  
  oled.setCursor(0, 0);       
  oled.println(" BY ALB"); 
  oled.display();   
  
  pinMode(plus1, INPUT);
  pinMode(plus3, INPUT);
  pinMode(plus5, INPUT);

  pinMode(minus1, INPUT);
  pinMode(minus3, INPUT);
  pinMode(minus5, INPUT);

  pinMode(reset25, INPUT);
  pinMode(reset30, INPUT);
  pinMode(reset0, INPUT);
}
  
void display_life(){

  delay(delaypress); 

  oled.clearDisplay();
  oled.setTextSize(6);
  if (currentlife <= 0) {currentlife=0;}; 
  if (currentlife > 99) {currentlife=0;};
  if (currentlife < 10) {oled.setCursor(doubledigi, 20);} else {oled.setCursor(singledigi, 20);}; 
  oled.println(currentlife);
  oled.setCursor(0, 0);
  oled.setTextSize(1);
  oled.println("Current DAMAGE:");
  oled.display();

}
void loop() {

  State_plus1 = digitalRead(plus1);
  State_plus3 = digitalRead(plus3);
  State_plus5 = digitalRead(plus5);

  State_minus1 = digitalRead(minus1);
  State_minus3 = digitalRead(minus3);
  State_minus5 = digitalRead(minus5);

  State_reset30 = digitalRead(reset30);
  State_reset25 = digitalRead(reset25);
  State_reset0 =  digitalRead(reset0);

  if (State_reset30 == HIGH) {currentlife=life30; display_life();}
  if (State_reset25 == HIGH) {currentlife=life25; display_life();}
  if (State_reset0 == HIGH) {currentlife=life0;   display_life();}

  if (State_plus1 == HIGH) {currentlife=currentlife+1; display_life();}
  if (State_plus3 == HIGH) {currentlife=currentlife+3; display_life();}
  if (State_plus5 == HIGH) {currentlife=currentlife+5; display_life();}

  if (State_minus1 == HIGH) {currentlife=currentlife-1; display_life();}
  if (State_minus3 == HIGH) {currentlife=currentlife-3; display_life();}
  if (State_minus5 == HIGH) {currentlife=currentlife-5; display_life();}
 
  
}