#include <LiquidCrystal_I2C.h>
#include "Switch.h"
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  pinMode(up, INPUT_PULLUP);
  pinMode(down, INPUT_PULLUP);
  pinMode(buzz, OUTPUT);

  lcd.begin(4, 20);
  lcd.createChar(0, clr);
  lcd.createChar(1, Man0);
  lcd.createChar(2, Man1);
  lcd.createChar(3, Man2);
  lcd.createChar(4, Man3);
  lcd.createChar(5, Heart);

  Serial.begin(9600);
  randomSeed(analogRead(A0));
  lcd.clear();
}
/////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////
void loop() {
  AnimationAndJump();
  BG_print();
  delay(50);

}

/////////////////////////////////////////////////////////////////////////
/////////////////////////////////////////////////////////////////////////
void AnimationAndJump() {

  if (digitalRead(up) == LOW && (PL_layer > 0)) {
    jump_up();
  }

  if (digitalRead(down) == LOW && (PL_layer < 3)) {
    jump_down();
  }

  frames();
  PL(1, PL_layer, x1);

}
/////////////////////////////////////////////////////////////////////////
void PL(int xpos, int ypos, char zeichen) {
  lcd.setCursor(xpos, ypos);
  lcd.write(byte(zeichen));
}

/////////////////////////////////////////////////////////////////////////
void frames() {
  if (x1 > 3) {
    x1 = 1;
  }
  else {
    x1++;
  }
}

/////////////////////////////////////////////////////////////////////////

void BG_print(){
  BG_print_layer(0);
  BG_print_layer(1);
  BG_print_layer(2);
  BG_print_layer(3);
}

void BG_print_layer(int layer){

   for(int i = 0; i < 20; i++){

    lcd.setCursor(i, layer);

    if((i == 1) && (PL_layer == layer) && (BG[layer][1] == !1)){
    }

    else{
      lcd.write(BG[layer][i]);
    }
  }
}

/////////////////////////////////////////////////////////////////////////

void jump_up(){
  if(digitalRead(up)==HIGH && LOGIC_highflank_up_memory == 1){
    LOGIC_highflank_up_memory = 0;
  }

  if(digitalRead(up)==LOW && LOGIC_highflank_up_memory == 0){
    LOGIC_highflank_up_memory = 1;
    PL_layer--;
  }
}


void jump_down(){
  if(digitalRead(down)==HIGH && LOGIC_highflank_down_memory == 1){
    LOGIC_highflank_down_memory = 0;
  }

  if(digitalRead(down)==LOW && LOGIC_highflank_down_memory == 0){
    LOGIC_highflank_down_memory = 1;
    PL_layer++;

  }
}