Need some help with a collision type problem in this very simple game!

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harrison...

Need some help with a collision type problem in this very simple game!

in Programming Questions • 3 years ago

Simple Game, i want the ballto bounce of the rectangle, but for some reason(most likely obvious) it just floats pass :( here is the code and thank you for your help!!

Harrison.

float x = 400; // postion of the player
float y = 193; //postion of player
float speed = 10; // movement of player speed
int size = 20; // Width of the shape
float xpos, ypos; // Starting position of shape
float xspeed = 2.8; // Speed of the shape
float yspeed = 2.2; // Speed of the shape
int xdirection = 1; // Left or Right
int ydirection = 1; // Top to Bottom
int score = 50;
void setup()
{
size(640, 200);
noStroke();
frameRate(30);
smooth();
// Set the starting position of the shape
xpos = width/2;
ypos = height/2;
}
void draw()
{
background(102);
moveright();
moveleft();
display();
collosions();
// Update the position of the shape
// xpos = xpos + ( xspeed * xdirection );
// ypos = ypos + ( yspeed * ydirection );
// Test to see if the shape exceeds the boundaries of the screen
// If it does, reverse its direction by multiplying by -1
if (xpos > width-size || xpos < 0) {
xdirection *= -1;
}
if (ypos > height-size) {
// ydirection *= -1;
score += 1;
xspeed += 0.1;
yspeed += 0.1;
}
if (score == 100) {
print("you win!");
exit();
}
if ( ypos < 0) {
ydirection *= -1;
score -= 1;
}
if (score == 0){
print("game over");
exit();
}
// Draw the shape
float col= random(255);
float col2 = random(255);
float col3 = random(255);
fill(col, col2, col3);
ellipse(xpos+size/2, ypos+size/2, size, size);
print(score);
}
void moveright() {
if (keyPressed) {
if (key == 'd'){
x = x+speed;
}
}
if ((x + 20) < 0) {
x = 600;
}
}
void moveleft() {
if (keyPressed){
if (key == 'a'){
x = x - speed;
}
}
if ((x + 20) > 640){
x = 40;
}
}
void display() {
fill(255);
rect(x,y,40,7);
}
void collosions() {
xpos = xpos + ( xspeed * xdirection );
ypos = ypos + ( yspeed * ydirection );
if(xpos == x){
ydirection *= -1;
}
}

Astrophysics!

Replies(4)

adam.ts

Re: Need some help with a collision type problem in this very simple game!

3 years ago

this seems to work

float x = 400; // postion of the player
float y = 193; //postion of player
float speed = 10; // movement of player speed
int size = 20; // Width of the shape
float xpos, ypos; // Starting position of shape
float xspeed = 2.8; // Speed of the shape
float yspeed = 2.2; // Speed of the shape
int score = 50;
void setup()
{
size(640, 200);
noStroke();
frameRate(30);
smooth();
// Set the starting position of the shape
xpos = width/2;
ypos = height/2;
}
void draw()
{
background(102);
move();
moveright();
moveleft();
if (xpos > width-size || xpos < 0) {
xspeed *= -1;
print(score);
}
if(ypos>=y-size&&abs(x-xpos)<=20){
if(yspeed>0){
yspeed*=-1;
}
}
if (ypos > height-size) {
yspeed*=-1;
score += 1;
xspeed += 0.1;
yspeed += 0.1;
}
if (score == 100) {
print("you win!");
exit();
}
if ( ypos < 0) {
yspeed *= -1;
score -= 1;
}
if (score == 0){
print("game over");
exit();
}
// Draw the shape
float col= random(255);
float col2 = random(255);
float col3 = random(255);
fill(col, col2, col3);
ellipse(xpos+size/2, ypos+size/2, size, size);
rect(x,y,40,7);
}
void move(){
xpos = xpos+xspeed;
ypos=ypos+yspeed;
}
void moveright() {
if (keyPressed) {
if (key == 'd'){
x = x+speed;
}
}
if ((x + 20) < 0) {
x = 600;
}
}
void moveleft() {
if (keyPressed){
if (key == 'a'){
x = x - speed;
}
}
if ((x + 20) > 640){
x = 40;
}
}

you don't need xdirectionyou can just multiply xspeed by -1 each time it hits

harrison...

Re: Re: Need some help with a collision type problem in this very simple game!

3 years ago

Thank you! soo much!

Astrophysics!

shafen

Re: Need some help with a collision type problem in this very simple game!

2 years ago

did you ever get the score to display on the screen or the lose screen?

harrison...

Re: Re: Need some help with a collision type problem in this very simple game!

2 years ago

Yeah, In the end the game was working very well if you go here http://epiphanystudios.co.uk/games/ there is an example of a slightly more advance game with score and lives being displayed :)

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