key pressed problem

Programming Questions

milou.die..

in Programming Questions • 9 months ago

hello,

for school i have to make a game but i'm having difficulties with the keyPressed function.

i'm trying to move an object to the left with te left button on the keyboard.

below shows what i have so far ( i left out the part that draws the monster)

thanks in advance for you help

class Monster {

int x;

int y;

int speed;

Monster(int tempX, int tempY, int tempSpeed) {

x = tempX;

y = tempY;

speed = tempSpeed;

}

void beweegMonster() {

if keyPressed () {

if (key == 'left') {

x = x + speed;

}

Replies(5)

asimes

Re: key pressed problem

9 months ago

Monster m;
void setup() {
size(600, 600);
m = new Monster(width/2, height/2, 5);
}
void draw() {
background(255);
ellipse(m.x, m.y, 10, 10);
}
class Monster {
int x;
int y;
int speed;
Monster(int tempX, int tempY, int tempSpeed) {
x = tempX;
y = tempY;
speed = tempSpeed;
}
}
void keyPressed() {
if (key == CODED) {
if (keyCode == LEFT) m.x -= m.speed;
if (keyCode == RIGHT) m.x += m.speed;
}
}

milou.die..

Re: Re: key pressed problem

9 months ago

thank you for you're reaction.

i tried it but it does nothing..

it doesn't move.

i have the classes in different tabs

this is what i have in the main tab:

___________________________________

Monster spook;

Enemies lamp1;

Monster spook1;

void setup () {

size(800, 800);

spook = new Monster(70, 650, 2);

lamp1 = new Enemies(200, 200, 5);

spook1 = new Monster(width/2, height/2, 5);

}

void draw() {

background(0);

spook1.beweegMonster();

spook.tekenMonster();

lamp1.tekenEnemies();

lamp1.beweegEnemies();

}

_____________________________

this is the class Monster:

class Monster { // data

int x;

int y; // declareren

int speed;

Monster(int tempX, int tempY, int tempSpeed) {

x = tempX;

y = tempY; // initieren

speed = tempSpeed;

}

void beweegMonster() {

if (key == CODED) {

if (keyCode == LEFT) spook1.x -= spook1.speed;

if (keyCode == RIGHT) spook1.x += spook1.speed;

}

void tekenMonster() {

//Lichaam

fill(227, 224, 224);

stroke(227, 224, 224);

ellipse(x, y, 100, 150);

rect(x -50, y +10, 100, 100);

//voeten

ellipse(x -40, y +100, 21, 50);

ellipse(x -0, y +100, 22, 50);

ellipse(x +40, y +100, 21, 50);

fill(0);

stroke(0);

ellipse(x -20, y +118, 19, 30);

ellipse(x +20, y +118, 19, 30);

fill(255);

//Ogen

fill(0);

ellipse(x -20, y -20, 20, 40);

ellipse(x +20, y -20, 20, 40);

stroke(0);

strokeWeight(5);

line(x -28, y -45, x -10, y -30);

line(x +28, y -45, x +10, y -30);

//mond

ellipse(x, y +25, 20, 20);

stroke(255);

strokeWeight(4);

//hoed

fill(28, 58, 106);

stroke(28, 58, 106);

rect(x -25, y -120, 50, 50);

rect(x -45, y -70, 90, 5);

fill(227, 224, 224);

stroke(227, 224, 224);

rect(x -25, y -80, 50, 5);

}

asimes

Re: key pressed problem

9 months ago

The code I posted works. It doesn't work here because you put the keyPressed() code back into your Monster class and it doesn't belong there:

Monster spook;
void setup () {
size(800, 800);
spook = new Monster(70, 650, 2);
}
void draw() {
background(0);
spook.tekenMonster();
}
class Monster { // data
int x;
int y; // declareren
int speed;
Monster(int tempX, int tempY, int tempSpeed) {
x = tempX;
y = tempY; // initieren
speed = tempSpeed;
}
void tekenMonster() {
//Lichaam
fill(227, 224, 224);
stroke(227, 224, 224);
ellipse(x, y, 100, 150);
rect(x -50, y +10, 100, 100);
//voeten
ellipse(x -40, y +100, 21, 50);
ellipse(x -0, y +100, 22, 50);
ellipse(x +40, y +100, 21, 50);
fill(0);
stroke(0);
ellipse(x -20, y +118, 19, 30);
ellipse(x +20, y +118, 19, 30);
fill(255);
//Ogen
fill(0);
ellipse(x -20, y -20, 20, 40);
ellipse(x +20, y -20, 20, 40);
stroke(0);
strokeWeight(5);
line(x -28, y -45, x -10, y -30);
line(x +28, y -45, x +10, y -30);
//mond
ellipse(x, y +25, 20, 20);
stroke(255);
strokeWeight(4);
//hoed
fill(28, 58, 106);
stroke(28, 58, 106);
rect(x -25, y -120, 50, 50);
rect(x -45, y -70, 90, 5);
fill(227, 224, 224);
stroke(227, 224, 224);
rect(x -25, y -80, 50, 5);
}
}
void keyPressed() {
if (key == CODED) {
if (keyCode == LEFT) spook.x -= spook.speed;
if (keyCode == RIGHT) spook.x += spook.speed;
}
}

asimes

I put the keyPressed() code separate from the class because otherwise if you have more than one monster it will move all of them. If you really want to have the keyPressed() code in the class you could do it like this:

void beweegMonster() {
if (keyPressed && key == CODED) {
if (keyCode == LEFT) x -= speed;
if (keyCode == RIGHT) x += speed;
}
}

milou.die..

Re: Re: key pressed problem

9 months ago

ah i see. thank you very much

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