Arduino Controlled Gamepad for PC

#include<Mouse.h>
#include <Keyboard.h>
const int EMG = 2;    //Emergency stop button :) 
const int L1 = 7;
const int L2 = 8;
const int P1 = 9;
const int R1 = 14;
const int R2 = 16;
const int P2 = 10;
const int D1 = 4;
const int D2 = 5;
const int D3 = 6;
const int D4 = 3;  
const int SWITCH = 15; // digital pin 2 connected to SW output of JoyStick
const int X_AX = A1; // analog pin 0 connected to X output of JoyStick
const int Y_AX = A0; // analog pin 1 connected to Y output of JoyStick
int range = 10;               // output range or speed of X or Y movement
int responseDelay = 5;        // response delay of the mouse, in ms
int threshold = range / 4;    // resting threshold
int center = range / 2;
int EMGState = HIGH;
int L1S = LOW;
int L2S = LOW;
int P1S = LOW;
int R1S = LOW; 
int R2S = LOW; 
int P2S = LOW; 
int D1S = LOW;
int D2S = LOW;        //PREVIOUS STATES
int D3S = LOW; 
int D4S = LOW; 
void setup() 
{
  pinMode(EMG, INPUT);
  pinMode(L1, INPUT);
  pinMode(L2, INPUT);
  pinMode(P1, INPUT);
  pinMode(D1, INPUT);
  pinMode(D2, INPUT);
  pinMode(D3, INPUT);
  pinMode(D4, INPUT);
  pinMode(R1, INPUT);
  pinMode(R2, INPUT);
  pinMode(P2, INPUT);
  pinMode(SWITCH, INPUT_PULLUP); 
  Serial.begin(9600);
  Keyboard.begin();
  Mouse.begin();
}

void loop() 
{ 

  EMGState = digitalRead(EMG);
  if (EMGState == HIGH) 
  { 
    Serial.println("FAULT");
    Keyboard.releaseAll();
    Keyboard.end();
    Mouse.end();
  }
  else
  {
      //Serial.println("OK"); 
      int L1STATE = digitalRead(L1);
      int L2STATE = digitalRead(L2);
      int P1STATE = digitalRead(P1);
      int D1STATE = digitalRead(D1);
      int D2STATE = digitalRead(D2);
      int D3STATE = digitalRead(D3);
      int D4STATE = digitalRead(D4);
      int R1STATE = digitalRead(R1);
      int R2STATE = digitalRead(R2);
      int P2STATE = digitalRead(P2);
      
      if(L1STATE==HIGH && L1S == LOW)
      {
        Serial.println("L1 PRESSED");
        Keyboard.press('K');              //K
      }
      if(L1STATE==LOW && L1S == HIGH)
      {
        Serial.println("L1 RELEASED");
        Keyboard.release('K');              //K
      }


      if(L2STATE==HIGH && L2S == LOW)
      {
        Serial.println("L2 PRESSED");
        Keyboard.press('J');              //J
      }
      if(L2STATE==LOW && L2S == HIGH)
      {
        Serial.println("L2 RELEASED");
        Keyboard.release('J');              //J
      }


      if(P1STATE==HIGH && P1S == LOW)
      {
        Serial.println("P1 PRESSED");
        Keyboard.press('H');              //H
      }
      if(P1STATE==LOW && P1S == HIGH)
      {
        Serial.println("P1 RELEASED");
        Keyboard.release('H');              //H
      }
     
      if(R1STATE==HIGH && R1S == LOW)
      {
        Serial.println("R1 PRESSED");     //L
        Keyboard.press('L');
      }
      if(R1STATE==LOW && R1S == HIGH)
      {
        Serial.println("R1 RELEASED");     //L
        Keyboard.release('L');
      }

      if(R2STATE==HIGH && R2S == LOW)
      {
        Serial.println("R2 PRESSED");     //G
        Keyboard.press('G');
      }
      if(R2STATE==LOW && R2S == HIGH)
      {
        Serial.println("R2 RELEASED");     //G
        Keyboard.release('G');
      }

      if(P2STATE==HIGH && P2S == LOW)
      {
        Serial.println("P2 PRESSED");     //F
        Keyboard.press('F');
      }
      if(P2STATE==LOW && P2S == HIGH)
      {
        Serial.println("P2 RELEASED");     //F
        Keyboard.release('F');
      }

      
      if(D1STATE==HIGH && D1S == LOW)           
      {
        Serial.println("D1 PRESSED");     //W
        Keyboard.press('W');
      }
      if(D1STATE==LOW && D1S == HIGH)           
      {
        Serial.println("D1 RELEASED");     //W
        Keyboard.release('W');
      }

      
      if(D2STATE==HIGH && D2S==LOW)
      {
        Serial.println("D2 PRESSED");     //A
        Keyboard.press('A');
      }
      if(D2STATE==LOW && D2S==HIGH)
      {
        Serial.println("D2 RELEASED");     //A
        Keyboard.release('A');
      }

      
      if(D3STATE==HIGH && D3S==LOW)
      {
        Serial.println("D3 PRESSED");     //S
        Keyboard.press('S');
      }
      if(D3STATE==LOW && D3S==HIGH)
      {
        Serial.println("D3 RELEASED");     //S
        Keyboard.release('S');
      }


      if(D4STATE==HIGH && D4S==LOW)
      {
        Serial.println("D4 PRESSED");     //D
        Keyboard.press('D');
      }
      if(D4STATE==LOW && D4S==HIGH)
      {
        Serial.println("D4 RELEASED");     //D
        Keyboard.release('D');
      }
      
      L1S = L1STATE;
      L2S = L2STATE;
      P1S = P1STATE;
      R1S = R1STATE;
      R2S = R2STATE;
      P2S = P2STATE;
      D1S = D1STATE;
      D2S = D2STATE;
      D3S = D3STATE;
      D4S = D4STATE;
     

     int xReading = readAxis(A1);
     int yReading = readAxis(A0);
     Mouse.move(xReading, yReading, 0);
     if (digitalRead(SWITCH) == LOW) 
       {
         if (!Mouse.isPressed(MOUSE_LEFT)) 
         {
           Mouse.press(MOUSE_LEFT);
         }
       }
      else 
      {
      if (Mouse.isPressed(MOUSE_LEFT)) 
      {
        Mouse.release(MOUSE_LEFT);
      }
      }

        delay(responseDelay);
 }
} 
int readAxis(int thisAxis) 
{
  int reading = analogRead(thisAxis);
  reading = map(reading, 0, 1023, 0, range);
  int distance = reading - center;
  if (abs(distance) < threshold) 
  {
    distance = 0;
  }

  return distance;
}