Mario game--adding ground and moving screen with player

Processing Coding Questions
1 
int gameMode=0;//0 - menu, 1 - play game, 2 - instructions, 3 - character selection
int selChar=1;//default character is "character 1"
int level=1;
color red=color(255, 0, 0);
color green=color(0, 255, 0);
color blue=color(0, 0, 255);

boolean moveRight=false;
boolean moveLeft=false;
boolean moveDown=false;
boolean moveUp=false;

int x=50;
boolean[] keys=new boolean[128];

int[] v={4, 0};//horizontal and vertical velocity

int[] g1={0, 0, -968};
int[] g2={968, 0, -968};

PImage pic1;
PImage pic2;
int speed=-5;

int[] g3={0, 0, -108};
int[] g4={108, 0, -108};

PImage pic3;
PImage pic4;

PImage a;
PImage b;
PImage c;


void setup() {
  size(800, 600);
  a = loadImage("mario.png");
  b = loadImage("luigi.png");
  c = loadImage("Yoshi.png");
  pic1=loadImage("back.png");
  pic2=loadImage("back1.png");
  pic3=loadImage("ground1.png");
  pic4=loadImage("ground2.png");
}

void draw() {//runs forever
  background(red);
  if (gameMode==0){
    mainMenu();
  }
  else if (gameMode==1){
      playL1();
  }
  else if (gameMode==2)
    controls();
  else if (gameMode==3)
    select();
}//end draw

void playL1(){
  image(pic1, g1[0], g1[1]);
  image(pic2, g2[0], g2[1]);

  g1[0] = g1[0] + speed;//moving left
  if (g1[0] + speed < g1[2]) { 
    g1[0] = -g2[2];
  }
  g2[0] = g2[0] + speed;//moving left
  if (g2[0] + speed < g2[2]) {
    g2[0] = -g1[2];
  }
  
  image(pic3, g3[0], g3[1]);
  image(pic4, g4[0], g4[1]);
  
   g3[0] = g3[0] + speed;//moving left
  if (g3[0] + speed < g3[2]) { 
    g3[0] = -g4[2];
  }
  g4[0] = g4[0] + speed;//moving left
  if (g4[0] + speed < g4[2]) {
    g4[0] = -g3[2];
  }
  
} //end playL1

void controls() {
  textSize(35);
  fill(255);
  text("press spacebar to jump",150,150);
  text("move you characters", 150, 250);
  text("collect coins",150,350);
  text("avoid the enemies",150,450);
  backToMain();
}

void select() {//character select
  textAlign(LEFT);
  textSize(20);
  fill(0);//black
  //displaying all characters
  rect(200, 50, 100, 100);
  rect(350, 50, 100, 100);
  rect(500, 50, 100, 100);

  if (mouseIn(200, 50, 100, 100)) {
    fill(blue);
    rect(200, 50, 100, 100);
    if (mousePressed) {
      selChar=1;//1 could mean Mario
      gameMode=0;//main menu
    }
  }

  if (mouseIn(350, 50, 100, 100)) {
    fill(blue);
    rect(350, 50, 100, 100);
    if (mousePressed) {
      selChar=2;//2 could mean Luigi
      gameMode=0;
    }
  }

  if (mouseIn(500, 50, 100, 100)) {
    fill(blue);
    rect(500, 50, 100, 100);
    if (mousePressed) {
      selChar=3;//3 could be Yoshi
      gameMode=0;
    }
  }

  fill(255);
  text("Char 1", 210, 100);
  text("Char 2", 360, 100);
  text("Char 3", 510, 100);

  backToMain();
}//end select

void mainMenu() {
  textAlign(LEFT);
  textSize(35);
  fill(blue);
  text("START", 350, 430);
  text("INSTRUCTIONS", 290, 490);
  text("CHARACTERS", 295, 555);
  
  image(a, 200, 0, 150, 200);
  image(b, 80, 250, 200, 250);
  image(c,600,200,150,200);
  
  if (mouseIn(330, 400, 150, 35)) {//"play"
    fill(0);
    text("START", 350, 430);
    if (mousePressed) {
      gameMode=1;
    }
  }
  if (mouseIn(280, 460, 270, 35)) {//"instructions"
    fill(0);
    text("INSTRUCTIONS", 290, 490);
    if (mousePressed) {
      gameMode=2;
    }
  }
  if (mouseIn(285, 525, 240, 35)) {//"characters"
    fill(0);
    text("CHARACTERS", 295, 555);
    if (mousePressed) {
      gameMode=3;
    }
  }
  fill(255);
  textSize(60);
  text("Super Mario ", 230, 300);
}//end mainMenu

void backToMain() {
  textAlign(LEFT);
  textSize(20);
  fill(green);
  rect(20, 550, 120, 40);
  fill(blue);
  text("Menu", 50, 580);

  if (mouseIn(20, 550, 120, 40)) {//"back to menu"
    fill(0);
    text("Menu", 50, 580);
    if (mousePressed) {
      gameMode=0;
    }
  }
}//end backToMain

void movePlayer() {
  if (keys[39]) {//39 is the code for the RIGHT arrow key
    v[0]=4;
    moveRight=true;
  } else {
    moveRight=false;
  }

  if (keys[37]) {//37 is LEFT
    v[0]=-4;
    moveLeft=true;
  } else {
    moveLeft=false;
  }

  if (keys[40]) { //40 is DOWN
    v[1]=4;
    moveDown=true;
  } else {
    moveDown=false;
  }

  if (keys[38]) { //38 is UP
    v[1]=-4;
    moveUp=true;
  } else {
    moveUp=false;
  }
}//end movePlayer

void keyPressed() {
  //println(keyCode+" was pressed");
  //keys[keyCode]=true;
}

void keyReleased() {
  //println(keyCode+" was released");
  //keys[keyCode]=false;
}

//The function returns true if the mouse pointer is INSIDE the rectangle, otherwise returns false
boolean mouseIn(int left, int top, int w, int h) {
  return (mouseX > left && mouseX < left+w && mouseY > top && mouseY < top+h);
}//end mouseIn
2

I have this game code but I need help adding the ground and moving the screen the way the player moves. If you could help that would be great!

1 Like
3

Okay, this is a 2D Sketch

We can’t run it since we don’t have the images

Consider uploading to github or so

Anyway. I assume Mario moves left and right

The idea is that Mario stays in the center and the ground moves underneath him (ground left when Mario goes right)

Search for the word Viewport here on the forum please

4 Likes
4

When you have a ground image

Display it at 0,0

When he runs 5 right, move the image 5 left, that’s -5 (minus 5)

Don’t move Mario he is at width/2