Not shooting when inverted and eyebot not dissapearing

Processing Coding Questions
1

why can I not shoot when the screen is inverted?

//visual
PImage shrek;
boolean invert= false;
boolean shooting;
PImage[] soldier= new PImage[3];

PImage crosseye;
PImage nocrosseye;
PImage eyebot;
PImage heart;

//timer

//moving
boolean enemy1life= true;
float charx;
float chary=590-100;
boolean jumping= false;
float gravity= 10;
float jumpingheight=100;
float jumpspeed;
int i=1;
float bulletx;
float bullety;

float enemyx=0;

void setup() {
  size(1180, 590);
  charx=width/2;
  bulletx=charx+20;
  bullety=chary+20;
  shrek= loadImage("shrek.jpg");
  soldier[1]= loadImage("soldier.png");
  soldier[2]= loadImage("revsoldier.png");
  eyebot= loadImage("eyebot.png");
}

void draw() {
  frameRate(60);
  //visual
  
  background(shrek);
  
  color(1005);
  
  fill(255);
  rect(width/2+100, 490, 20, 200);
  
  fill(0);
  rect(width/2-100, 490, 20, 200);
  
  ellipse(bulletx, bullety, 10, 10);

  image(soldier[i], charx, chary, 100, 100);
  if(enemy1life==true){
  image(eyebot, enemyx, 490-40, 100, 200);}

  //timer
  
  if (millis()/1000%15==0&&millis()/1000>10&& invert==false) {
    invert=true;
  }
  
  if (millis()/1000%30==0&&millis()/1000>10&& invert==true) {
    invert=false;
  }
  
  if (invert==true) {
    filter(INVERT);
  }


  //moving
  
  if(charx-enemyx>=0&&charx != enemyx){
    enemyx= enemyx+5;
  }
  if(charx-enemyx<0&&charx != enemyx){
    enemyx= enemyx-5;
  }
  
  if (charx>=width-100) {
    charx=width-100;
  }

  jumpspeed= int(dist(0, jumpingheight, 0, chary)/20);

  if (chary>height-100) {
    chary=height-100;
  }
  
  if (keyPressed) {

    //move left with a
    if (key == 'a'&&invert==false) {
      charx=charx-10;
      i=2;
    } 

    //move right with d
    if (key == 'd'&&invert==false) {
      charx=charx+10;
      i=1;
    }

    //move right with a
    if (key == 'a'&&invert==true) {
      charx=charx+10;
      i=1;
    } 

    //move left with d
    if (key == 'd'&&invert==true) {
      charx=charx-10;
      i=2;
    }
    //jump with w
    if (key == 'w') {
      jumping=true;
    }
    //shoot with space
    if (key == ' ') {
      shooting=true;
    }
  }

  if (charx<=0) {
    charx= 0;
  }
  
  if (jumping==true) {
    chary=int(chary-jumpspeed);
    charx=charx+0.1;
    if (jumpspeed<10&&chary<height-30) {
      jumping=false;
    }
  }
  
  if (chary!=height-100&&jumping==false) {
    chary+=gravity;
  }
  
  if(shooting==true&&i==1&&bulletx>=charx+20&&invert==false){
    bulletx+=10;
  }
    if(shooting==true&&i==2&&bulletx<=charx+20&&invert==false){
    bulletx=bulletx-10;
  }
  
    if(shooting==true&&i==1&&bulletx>=charx+20&&invert==false){
    bulletx+=10;
  }
    if(shooting==true&&i==2&&bulletx<=charx+20&&invert==false){
    bulletx=bulletx-10;
  }
  
  
  if(bulletx>width){
    shooting=false;
  }
  
  if(shooting==false){
    bulletx=charx+20;
  }
  
  println(charx);
  if(invert==true){
  if(charx==620){
    charx=610;
  }
  }
    if(invert==false){
  if(charx==480){
    charx=charx+10;
  }
    }
  if(invert==true){
  if(bulletx==620){
    bulletx=charx+20;
    shooting=false;
  }
  }
    if(invert==false){
  if(bulletx==480){
    bulletx=charx+20;
    shooting=false;
  }
    }
  if(invert==true){
  if(enemyx==width/2+60){
    enemyx=enemyx+20;
  }
  }
    if(invert==false){
  if(enemyx==width/2-10-150){
    enemyx=enemyx-20;
  }
    }
   if(bulletx==enemyx){
     enemy1life=false;
   }
   if(shooting==false){
     bulletx=charx+20;
   }
}