HELP - Simple Game in Processing

Programming Questions

pharrel

HELP - Simple Game in Processing

in Programming Questions • 6 months ago

Hello fellow programmers, I am currently studying at university and for my coursework I was asked to create an Alien, and then later on, a simple game which would include my previously drawn creature in some way.

I have made a very simple shooting game which I thought could work. White balls are falling from the top of the screen and at the bottom there is a ship which shoots these down. Now, I have made this prototype without my Alien, and now I am struggling to import it into the game. I wanted to use my Alien instead of the white balls but this proved difficult so I decided to make the green "triangle ship" at the bottom to be my alien. I also need some kind of scoring system and possibly lives. I have spent many hours today trying to figure this out but no luck so I'm begging for your help. This coursework is due in 2 days time and it would be perfect if my Alien was in the game. The Alien uses a class, this is the code for the main body and all the methods, please ignore the movement and the bouncing part of the program as it is not needed for the game.

Alien myAlien; //Class
void setup(){
size(700,700); //Window Size
myAlien = new Alien(350,175,250,250,3,3); //Changeable Parameters
}

void draw(){
background(255);//Space Background
stroke(0);

myAlien.draw_Face(); //draws alien
myAlien.draw_left_ear(); //draws left ear
myAlien.draw_right_ear();//draws right ear
myAlien.draw_body();//draws the body
myAlien.draw_eye();//draws the eye
myAlien.draw_eye_ball();//draws the eyeball
myAlien.draw_mouth();//draws the mouth
myAlien.draw_nose();//draws the nose
myAlien.movement_of_alien();//calculates movement
myAlien.alien_bounce();//bouncing

Methods etc:

class Alien {

//Variables
int bodyXLocation;
int bodyYLocation;
int bodyWidth;
int bodyHeight;
int eyeWidth;
int eyeHeight;
int eyeXLocation;
int eyeYLocation;
int eyeballWidth;
int eyeballHeight;
int eyeballXlocation;
int eyeballYlocation;
int earleftWidth;
int earleftHeight;
int earleftXlocation;
int earleftYlocation;
int earrightWidth;
int earrightHeight;
int earrightXlocation;
int earrightYlocation;
int mouthXlocation;
int mouthYlocation;
int mouthHeight;
int mouthWidth;
int noseXlocation;
int noseYlocation;
int noseHeight;
int noseWidth;
int speedXLocation;
int speedYLocation;

Alien(int tempX, int tempY, int tempWidth, int tempHeight, int tempXSpeed, int tempYSpeed) {
bodyXLocation = tempX;
bodyYLocation = tempY;
bodyWidth = tempWidth;
bodyHeight = tempHeight;
speedXLocation = tempXSpeed;
speedYLocation = tempYSpeed;
//Changeable Parameters
}
//This method draws the alien
void draw_Face() {
this.draw_left_ear();
this.draw_right_ear();
this.draw_body();
this.draw_eye();
this.draw_eye_ball();
this.draw_mouth();
this.draw_nose();
this.alien_bounce();
}

void draw_left_ear() {
fill(255,0,0);
earleftXlocation = bodyXLocation - 50;
earleftYlocation = bodyYLocation - 50;
earleftWidth = bodyWidth / 5;
earleftHeight = bodyHeight - 50;
ellipse(earleftXlocation,earleftYlocation,earleftWidth,earleftHeight);
}

void draw_right_ear() {
earrightWidth = bodyWidth / 4;
earrightHeight = bodyHeight - 50;
earrightXlocation = bodyXLocation + 50;
earrightYlocation = bodyYLocation - 50;
ellipse(earrightXlocation,earrightYlocation,earrightWidth,earrightHeight);
}

void draw_body() {
fill(0,255,0);
ellipse(bodyXLocation,bodyYLocation,bodyWidth,bodyHeight);
}

void draw_eye() {
int offSet = bodyWidth / 17;
eyeXLocation = bodyXLocation - offSet;
eyeYLocation = bodyYLocation - (bodyHeight / 4);
eyeWidth = bodyHeight / 5;
eyeHeight = bodyWidth / 5;
ellipse(eyeXLocation,eyeYLocation,eyeWidth,eyeHeight);
}

void draw_eye_ball() {
fill(255,0,0);
int eyeballoffset = bodyWidth / 10;
eyeballXlocation = bodyXLocation - eyeballoffset;
eyeballXlocation = bodyXLocation - 8;
eyeballYlocation = bodyYLocation - 60;
eyeballWidth = bodyHeight / 10;
eyeballHeight = bodyWidth / 10;
ellipse(eyeballXlocation,eyeballYlocation,eyeballWidth,eyeballHeight);
}

void draw_mouth() {
fill(255,0,0);
mouthXlocation = bodyXLocation;
mouthYlocation = bodyYLocation + 75;
mouthWidth = bodyWidth - 150;
mouthHeight = bodyHeight - 190;
ellipse(mouthXlocation,mouthYlocation,mouthWidth,mouthHeight);
}

void draw_nose() {
fill(0,0,255);
noseXlocation = bodyXLocation - 5;
noseYlocation = bodyYLocation + 3;
noseWidth = bodyWidth - 200;
noseHeight = bodyHeight - 200;
ellipse(noseXlocation,noseYlocation,noseWidth,noseHeight);
}

void movement_of_alien() {

     //Movement
     bodyXLocation = bodyXLocation + speedXLocation;
     bodyYLocation = bodyYLocation + speedYLocation;
     this.alien_bounce();//Links to Alien_Bounce
}

void alien_bounce() {

//Bouncing
if(bodyXLocation > width - (bodyWidth / 2 )) {
     speedXLocation = speedXLocation * -1;
}
if(bodyXLocation < 0 + (bodyWidth / 2 )) {
     speedXLocation = speedXLocation * -1;
}
      if(bodyYLocation > height - (bodyHeight / 2 )) {
     speedYLocation = speedYLocation * -1;
}
if(bodyYLocation < 0 + (bodyHeight / 2 )) {
     speedYLocation = speedYLocation * -1;
}
}
} //End Of Class Alien

And finally the code for the game:

//PImage bg;
PFont fontA;
int sphereDiameter = 10;
boolean shoot = false;

int randx()
{
    return int(random(600));
}

int[] sphereXCoords = { randx(), randx(), randx(), randx(), randx() };
int[] sphereYCoords = { 0, 0, 0, 0, 0 };

void setup()
{
    //bg = loadImage("SpaceBG.png");
    size(600,620);
}

void draw()
{
    background(0);
    fill(color(0,255,0));
    stroke(color(0,255,0));
    triangle(mouseX-8, 580, mouseX+8, 580, mouseX, 565);
    fill(color(255,0,0));
    stroke(color(255,0,0));

    if(shoot==true)
    {
      sphereKiller(mouseX);
      shoot = false;
    }

    sphereDropper();
    gameEnder();
}

void mousePressed()
{
    shoot = true;
}

void sphereDropper()
{
    stroke(255);
    fill(255);
    for (int i=0; i<5; i++)
    {
      ellipse(sphereXCoords[i], sphereYCoords[i]++,
              sphereDiameter, sphereDiameter);
    }
}

void sphereKiller(int shotX)
{
    boolean hit = false;
    for (int i = 0; i < 5; i++)
    {
      if((shotX >= (sphereXCoords[i]-sphereDiameter/2)) &&
         (shotX <= (sphereXCoords[i]+sphereDiameter/2)))
      {
        hit = true;
        line(mouseX, 565, mouseX, sphereYCoords[i]);
        ellipse(sphereXCoords[i], sphereYCoords[i],
                sphereDiameter+25, sphereDiameter+25);
        sphereXCoords[i] = randx();
        sphereYCoords[i] = 0;
      }
    }

    if(hit == false)
    {
      line(mouseX, 565, mouseX, 0);
    }

}

void gameEnder()
{
    for (int i=0; i< 5; i++)
    {
      if(sphereYCoords[i]==600)
      {
        fill(color(255,0,0));
        noLoop();
      }
    }
}

So here it is, please help me out on this.
All best, Pharrel

Replies(14)

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

here

currently the main problem is that the scaling of the alien is not working on body and head or so...
you need to use bodyWidth and bodyHeight more often as a scale for the ears etc.

Alien myAlien; //object
//PImage bg;
PFont fontA;
int sphereDiameter = 10;
boolean shoot = false;
int randx()
{
return int(random(600));
}
int[] sphereXCoords = {
randx(), randx(), randx(), randx(), randx()
};
int[] sphereYCoords = {
0, 0, 0, 0, 0
};
void setup()
{
//bg = loadImage("SpaceBG.png");
size(600, 620);
myAlien = new Alien(
350, height-175,
25, 25,
3, 3); //Changeable Parameters
}
void draw()
{
background(0);
fill(color(0, 255, 0));
stroke(color(0, 255, 0));
//triangle(mouseX-8, 580, mouseX+8, 580, mouseX, 565);
//
myAlien.bodyXLocation=mouseX;
myAlien.draw_Face(); //draws alien
myAlien.draw_left_ear(); //draws left ear
myAlien.draw_right_ear();//draws right ear
myAlien.draw_body();//draws the body
myAlien.draw_eye();//draws the eye
myAlien.draw_eye_ball();//draws the eyeball
myAlien.draw_mouth();//draws the mouth
myAlien.draw_nose();//draws the nose
//
fill(color(255, 0, 0));
stroke(color(255, 0, 0));
if (shoot==true)
{
sphereKiller(mouseX);
shoot = false;
}
sphereDropper();
gameEnder();
}
void mousePressed()
{
shoot = true;
}
void sphereDropper()
{
stroke(255);
fill(255);
for (int i=0; i<5; i++)
{
ellipse(sphereXCoords[i], sphereYCoords[i]++,
sphereDiameter, sphereDiameter);
}
}
void sphereKiller(int shotX)
{
boolean hit = false;
for (int i = 0; i < 5; i++)
{
if ((shotX >= (sphereXCoords[i]-sphereDiameter/2)) &&
(shotX <= (sphereXCoords[i]+sphereDiameter/2)))
{
hit = true;
line(mouseX, 565, mouseX, sphereYCoords[i]);
ellipse(sphereXCoords[i], sphereYCoords[i],
sphereDiameter+25, sphereDiameter+25);
sphereXCoords[i] = randx();
sphereYCoords[i] = 0;
}
}
if (hit == false)
{
line(mouseX, 565, mouseX, 0);
}
}
void gameEnder()
{
for (int i=0; i< 5; i++)
{
if (sphereYCoords[i]==600)
{
fill(color(255, 0, 0));
noLoop();
}
}
}
// ===========================================================
class Alien {
//Variables
int bodyXLocation;
int bodyYLocation;
int bodyWidth;
int bodyHeight;
int eyeWidth;
int eyeHeight;
int eyeXLocation;
int eyeYLocation;
int eyeballWidth;
int eyeballHeight;
int eyeballXlocation;
int eyeballYlocation;
int earleftWidth;
int earleftHeight;
int earleftXlocation;
int earleftYlocation;
int earrightWidth;
int earrightHeight;
int earrightXlocation;
int earrightYlocation;
int mouthXlocation;
int mouthYlocation;
int mouthHeight;
int mouthWidth;
int noseXlocation;
int noseYlocation;
int noseHeight;
int noseWidth;
int speedXLocation;
int speedYLocation;
Alien(int tempX, int tempY,
int tempWidth, int tempHeight,
int tempXSpeed, int tempYSpeed) {
bodyXLocation = tempX;
bodyYLocation = tempY;
bodyWidth = tempWidth;
bodyHeight = tempHeight;
speedXLocation = tempXSpeed;
speedYLocation = tempYSpeed;
//Changeable Parameters
}
//This method draws the alien
void draw_Face() {
this.draw_left_ear();
this.draw_right_ear();
this.draw_body();
this.draw_eye();
this.draw_eye_ball();
this.draw_mouth();
this.draw_nose();
this.alien_bounce();
}
void draw_left_ear() {
fill(255, 0, 0);
earleftXlocation = bodyXLocation - 50;
earleftYlocation = bodyYLocation - 50;
earleftWidth = bodyWidth / 5;
earleftHeight = bodyHeight - 50;
ellipse(earleftXlocation, earleftYlocation, earleftWidth, earleftHeight);
}
void draw_right_ear() {
earrightWidth = bodyWidth / 4;
earrightHeight = bodyHeight - 50;
earrightXlocation = bodyXLocation + 50;
earrightYlocation = bodyYLocation - 50;
ellipse(earrightXlocation, earrightYlocation, earrightWidth, earrightHeight);
}
void draw_body() {
fill(0, 255, 0);
ellipse(bodyXLocation, bodyYLocation, bodyWidth, bodyHeight);
}
void draw_eye() {
int offSet = bodyWidth / 17;
eyeXLocation = bodyXLocation - offSet;
eyeYLocation = bodyYLocation - (bodyHeight / 4);
eyeWidth = bodyHeight / 5;
eyeHeight = bodyWidth / 5;
ellipse(eyeXLocation, eyeYLocation, eyeWidth, eyeHeight);
}
void draw_eye_ball() {
fill(255, 0, 0);
int eyeballoffset = bodyWidth / 10;
eyeballXlocation = bodyXLocation - eyeballoffset;
eyeballXlocation = bodyXLocation - 8;
eyeballYlocation = bodyYLocation - 60;
eyeballWidth = bodyHeight / 10;
eyeballHeight = bodyWidth / 10;
ellipse(eyeballXlocation, eyeballYlocation, eyeballWidth, eyeballHeight);
}
void draw_mouth() {
fill(255, 0, 0);
mouthXlocation = bodyXLocation;
mouthYlocation = bodyYLocation + 75;
mouthWidth = bodyWidth - 150;
mouthHeight = bodyHeight - 190;
ellipse(mouthXlocation, mouthYlocation, mouthWidth, mouthHeight);
}
void draw_nose() {
fill(0, 0, 255);
noseXlocation = bodyXLocation - 5;
noseYlocation = bodyYLocation + 3;
noseWidth = bodyWidth - 200;
noseHeight = bodyHeight - 200;
ellipse(noseXlocation, noseYlocation, noseWidth, noseHeight);
}
void movement_of_alien() {
//Movement
bodyXLocation = bodyXLocation + speedXLocation;
bodyYLocation = bodyYLocation + speedYLocation;
this.alien_bounce();//Links to Alien_Bounce
}
void alien_bounce() {
//Bouncing
if (bodyXLocation > width - (bodyWidth / 2 )) {
speedXLocation = speedXLocation * -1;
}
if (bodyXLocation < 0 + (bodyWidth / 2 )) {
speedXLocation = speedXLocation * -1;
}
if (bodyYLocation > height - (bodyHeight / 2 )) {
speedYLocation = speedYLocation * -1;
}
if (bodyYLocation < 0 + (bodyHeight / 2 )) {
speedYLocation = speedYLocation * -1;
}
}
} //End Of Class Alien
//

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Hey, thanks for the quick reply and the code. What exactly do I have to do next? Or maybe you can help me out with this a bit more. It might seem like I want this done for me but I am running out of time and I still have stuff like sound, scoring etc to do, but the most important part is to get the Alien displaying properly as it is crucial that it's included in the game.

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

First the alien:
decide for the alien body width and height you want (e.g. 25)

then you need to go through the body parts of the alien

e.g.

void draw_mouth() {

e.g.
this line won't work with a body height of 25, because mouth outside alien. Bad.

mouthYlocation = bodyYLocation + 75;

go through all body parts of the alien and check those lines.

The lives of your player
umh, you could say if one white ball hits the lower screen border

lives--;

The score
Once a white ball is shot say

score++;

Display
display lives & score somewhere.
When lives <= 0 set game over = true.

Greetings, Chrisir

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Thanks a lot :) The last thing I would like to know is what would the piece of code for the score and lives look like? Just a rough example and possibly it's location in the code.

Anyway, you probably saved me from failing this coursework so thanks again. I am glad that I came to this forum for help.

If I have any more questions I will post again :D

THANK YOU!

//EDIT: Also, what do you mean by the mouth being outside the alien?

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

for the score and lives look like? Just a rough example and possibly it's location in the code.

e.g. after line 63

if (sphereYCoords[i] > height -20)
lives --;

and
after line 74

score++;

in draw () you need

text ("Lives: "+lives + " --- " + "score: "+score, 20,20);

or so.

Also, what do you mean by the mouth being outside the alien?

Your alien doesn't look right, because we had to make it much smaller. You need to decide for the size you want and then adjust mouth size, ear size etc. as well.
Also you need to adjust mouth position, ear position etc. - at the moment I guess they are not in the right position.

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Cool, thanks, the alien is fixed now, there is just one more thing that I can't figure out. When the lives run out, the player is given an option to press "R" to restart the game. When "R" is pressed, both the score and the lives counter reset but I would also want the sphere Y and X coords to reset as well so that the balls start falling from the top again.

The code which makes X random and Y = 0:

int randx()
{
return int(random(600));
}
int[] sphereXCoords = {
randx(), randx(), randx(), randx(), randx()
};
int[] sphereYCoords = {
0, 0, 0, 0, 0
};

This is the void I wrote for resetting the whole program:

void keyPressed(){
if (key == 'R');
lives=5;
score=0;
lost=false;
loop();
}

That's the last thing I need to do with the code, thanks for all the help Chrisir!

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

in this last bit you just posted
you need after lives=5;

for (int i=0; i< 5; i++)
{
sphereXCoords[i] = randx();
sphereYCoord [i] = -10;
}

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Thanks so much for your help, it's all done now and works like a charm

//EDIT: I take that back... it works fine but there is a problem with the white spheres. One or two spheres will go off the screen so that you can only see half of them. Is there an easy way to limit the spread on the X axis? Also is it possible to make my alien stop when I hit the side of the window? Just now half of the alien disappears when I mouse to either far left or right.

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

spheres:

int randx()
{
return int(random(600));
}

better

int randx()
{
return int(random(10,590));
}

alien stop when I hit the side of the window

after line 32

myAlien.bodyXLocation=mouseX;

say

if ( myAlien.bodyXLocation < myAlien.bodyWidth )
myAlien.bodyXLocation=0;
if ( myAlien.bodyXLocation > width-myAlien.bodyWidth )
myAlien.bodyXLocation=width-myAlien.bodyWidth ;

Hope this helps!

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Hey, that almost works. When I move my mouse to the far right, the alien stops a bit too early. When I move to the left something weird happens. The alien stops and then shift to the far left with only half of his body being visible.

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

try

Copy code

if ( myAlien.bodyXLocation < myAlien.bodyWidth ) // same value in both lines
myAlien.bodyXLocation=myAlien.bodyWidth;
if ( myAlien.bodyXLocation > width-myAlien.bodyWidth+7 ) // test 7 or 12 or what is best?
myAlien.bodyXLocation=width-myAlien.bodyWidth + 7; // same value in both lines

pharrel

Re: HELP - Simple Game in Processing

6 months ago

I did that:

if ( myAlien.bodyXLocation < myAlien.bodyWidth ) // same value in both lines
myAlien.bodyXLocation=myAlien.bodyWidth;
if ( myAlien.bodyXLocation > width-myAlien.bodyWidth + 30 ) // test 7 or 12 or what is best?
myAlien.bodyXLocation=width-myAlien.bodyWidth + 30; // same value in both lines

When I move to the right it stops exactly where I want it but when I mouse over to the left it stops too early, which one the values should I change?

//EDIT: Nevermind, I got it.

if ( myAlien.bodyXLocation < myAlien.bodyWidth - 30 )
myAlien.bodyXLocation=myAlien.bodyWidth - 30;
if ( myAlien.bodyXLocation > width-myAlien.bodyWidth + 30 )
myAlien.bodyXLocation=width-myAlien.bodyWidth + 30;

pharrel

Re: HELP - Simple Game in Processing

6 months ago

Ok then, seems like my game is working just fine. If I have any more problems I will sure post them, the deadline for this is tomorrow so I will probably leave it as it is.

Thanks so much for your help Chrisir

Chrisir

Re: HELP - Simple Game in Processing

6 months ago

Congratulations!

Good job!

I feel this part in draw() could be moved inside the class:

//
void display() {
draw_Face(); //draws alien
draw_left_ear(); //draws left ear
draw_right_ear();//draws right ear
draw_body();//draws the body
draw_eye();//draws the eye
draw_eye_ball();//draws the eyeball
draw_mouth();//draws the mouth
draw_nose();//draws the nose
}
//

and in draw() remains only

myAlien.display(); //draws the alien

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