Collision! PLEASE help!

Programming Questions

voytec2k

in Programming Questions • 11 months ago

Hey guys, so this is the last thing I need to do to complete my project.
My code is broken up into 4 tabs (project9,ball,human,sprite)

http://www.openprocessing.org/sketch/78586

^^ you can download my code here! I posted the code here but there is way too much and it's overwhelming.

Basically, I want my sprite to be able to collide with the falling missiles and the score to go up by 1.

(another small problem I have is that the missiles tend to all fall in one spot and I can't figure out how to randomize it)

Download "Marathonapocalypse" Thank you for your time!!

Replies(5)

voytec2k

Re: Collision! PLEASE help!

11 months ago

ball[] jellyfish;
PFont font;
int score=0;
int timer=21;
int timeLast = 0;
int life=10;
int screenNum;
int x;
int y;
int speed2;
PImage img;
PImage gameover;
PImage win;
PImage missile;
float gravityNum = 10;
float floorNum = 380;
Human bob;
boolean left = false;
boolean right = false;
boolean up = false;
boolean down = false;
void setup() {
size(640, 480);
frameRate(20);
timeLast=second();
img = loadImage("street1.jpg");
gameover = loadImage("explosion.jpg");
win = loadImage ("win.jpg");
missile = loadImage ("missile.png");
bob = new Human(10, 300);
font = loadFont("BankGothicBT-Light-48.vlw");
textFont(font, 22);
missile = loadImage("missile.png");
jellyfish = new ball[3];
for (int i = 0; i <3; i++)
{
jellyfish[i] = new ball();
jellyfish[i].a = (int)random(0, 40);
jellyfish[i].b = (int)random(-10, -1);
jellyfish[i].speed = (int)random(2, 5);
}
for (int i = 0; i<4; i++)
{
}
x = y = width-10;
speed2 = 100;
screenNum = 1;
score = 0;
life = 10;
}
void draw() {
if (timer>0) {
game();
}
if (timer<=0 && score <40) {
image(gameover, 320, 240);
}
if (timer<=0 && score>40) {
image(win, 320, 240);
}
if (life<=0) {
image(gameover, 320, 240);
}
for (int i = 0; i<jellyfish.length; i++)
{
jellyfish[i].show();
jellyfish[i].checkCollisionMissile();
jellyfish[i].charInside();
}
}
void game() {
if (second()!=timeLast) {
timeLast=second();
timer-=1;
}
background(timer*25, timer*25, 255);
imageMode(CORNER);
image(img, 0, 0);
noStroke();
text("Score: "+score, 340, 50);
text("Timer: "+timer, 340, 25);
text("Life: "+life, 340, 75);
bob.y = bob.gravity(bob.y, floorNum, gravityNum);
bob.update();
}
void keyPressed() {
if (keyCode==LEFT&&!left) {
left=true;
right=false;
bob.goTo("runLeft");
}
else if (keyCode==RIGHT&&!right) {
left=false;
right=true;
bob.goTo("runRight");
}
if (key==' '&&bob.jumpReady==true) {
bob.jump = true;
}
}
void keyReleased() {
if (keyCode==LEFT&&left) {
left=false;
bob.goTo("stop");
}
else if (keyCode==RIGHT&&right) {
right=false;
bob.goTo("stop");
}
if (key==' ') {
bob.jumpReady = true;
bob.jump = false;
}

(BALL)

class ball
{
float a, b;
int speed, speed2;
void show()
{
imageMode (CENTER);
image(missile,a,b, 80,100);
if (b > height) //if missile reaches bottom
{
// b = (int)random(-10); //loses life
life = life - 1;
if( life == 0)
{
life = life;
screenNum = 4; //THE END!!!
}
a = random(50, width-50);
}
b += speed;
// if (screenNum == 1)
// {
// b = -100;
// }
// if (screenNum == 4)
// {
// b = -100;
// a = -200;
// }
}
// void nothing()
// {
// b = random(-250,-50);
// a = -200;
// }
// SCORE
void checkCollisionMissile()
{
if(dist(x,y,a,b)<(50))
{
b = -100;
a = random(50, 350);
score = score +1;
}
}
void charInside()
{
if( x > width-5 ) x = width;
if( y > height ) y = height;
if( x < 2 ) x = 2;
if( y < 2 ) y = 2;
}
} // end of class

(HUMAN)

class Human extends Sprite {
float speed = 10;
float jumpHeight = 2000;
float jumpSpeed = 20;
boolean jump = false;
boolean jumpReady = true;
Human(float pX, float pY) {
super("walksequence.png",150,185, pX, pY); // filename, tilewidth, tileheight, x pos, y pos
internalFps = 24;
goTo("stop");
}
void goTo(String c) {
command = c;
if(command=="runLeft"){
setTiles(0,0,5,4);
flipX = true;
}
if(command=="runRight"){
setTiles(0,0,5,4);
flipX = false;
}
if(command=="stop"){
setTiles(0,0,0,0);
}
}
void behaviors() {
if(command=="runLeft") {
x -= speed;
}
if(command=="runRight"){
x += speed;
}
if(command=="stop") {
}
if(jump){
jumpReady=false;
if(y>floorNum-jumpHeight){
y-=jumpSpeed;
}
if(y<=floorNum-jumpHeight){
jump=false;
}
} else {
if(y==floorNum-jumpHeight){
jumpReady = true;
}
}
x = boundary(x,0,width);
y = boundary(y,0,height);
}
void update() {
frameTileMotor(frameRate/internalFps);
behaviors();
display("NORMAL");
}
}

(SPRITE)

class Sprite {
String command;
float internalFps;
PImage fromImg, toImg;
int tileX, tileY, tileWidth, tileHeight;
int startTileX, startTileY, endTileX, endTileY;
float x, y;
int frameCounter = 0;
boolean flipX = false;
boolean flipY = false;
boolean flipXY = false;
Sprite(String fN, int tW, int tH, float pX, float pY) {
fromImg = loadImage(fN);
tileWidth = tW;
tileHeight = tH;
x = pX;
y = pY;
}
void frameTileMotor(float a) {
frameCounter++;
if(frameCounter>=a) {
frameCounter=0;
if(tileX + tileWidth<=(endTileX*tileWidth)) {
tileX += tileWidth;
}
else if(tileY + tileHeight<=(endTileY*tileHeight)) {
tileY += tileHeight;
tileX = 0;
}
else {
tileX = startTileX*tileWidth;
tileY = startTileY*tileHeight;
}
}
toImg = fromImg.get(tileX,tileY,tileWidth,tileHeight);
}
void display(String b) {
pushMatrix();
translate(x,y);
int drawWidth = toImg.width;
int drawHeight = toImg.height;
if(flipX) {
scale(-1.0,1.0);
drawWidth = -1 * drawWidth;
}
else if (flipY) {
scale(1.0,-1.0);
drawHeight = -1 * drawHeight;
}
else if (flipXY) {
scale(-1.0,-1.0);
drawWidth = -1 * drawWidth;
drawHeight = -1 * drawHeight;
}
if(b=="NORMAL") {
imageMode(CENTER);
image(toImg,0,0,drawWidth,drawHeight);
}
else if(b=="BLEND") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,BLEND);
}
else if(b=="ADD") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,ADD);
}
else if(b=="SUBTRACT") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,SUBTRACT);
}
else if(b=="DARKEST") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,DARKEST);
}
else if(b=="LIGHTEST") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,LIGHTEST);
}
else if(b=="DIFFERENCE") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,DIFFERENCE);
}
else if(b=="EXCLUSION") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,EXCLUSION);
}
else if(b=="MULTIPLY") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,MULTIPLY);
}
else if(b=="SCREEN") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,SCREEN);
}
else if(b=="OVERLAY") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,OVERLAY);
}
else if(b=="HARD_LIGHT") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,HARD_LIGHT);
}
else if(b=="SOFT_LIGHT") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,SOFT_LIGHT);
}
else if(b=="DODGE") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,DODGE);
}
else if(b=="BURN") {
blend(toImg,0,0,tileWidth,tileHeight,int(x)-(tileWidth/2),int(y)-(tileHeight/2),drawWidth,drawHeight,BURN);
}
popMatrix();
}
void setTiles(int sX, int sY, int eX, int eY) {
startTileX = sX;
startTileY = sY;
endTileX = eX;
endTileY = eY;
tileX = startTileX*tileWidth;
tileY = startTileY*tileHeight;
}
//-----------
boolean hitDetect(float x1, float y1, float w1, float h1, float x2, float y2, float w2, float h2) {
w1 /= 2;
h1 /= 2;
w2 /= 2;
h2 /= 2;
if(x1 + w1 >= x2 - w2 && x1 - w1 <= x2 + w2 && y1 + h1 >= y2 - h2 && y1 - h1 <= y2 + h2) {
return true;
}
else {
return false;
}
}
//-------------
float tween(float v1, float v2, float e) {
v1 += (v2-v1)/e;
return v1;
}
float shake(float v1, float s) {
v1 += random(s) - random(s);
return v1;
}
float boundary(float v1, float vMin, float vMax) {
if(v1<vMin) {
v1 = vMin;
}
else if(v1>vMax) {
v1=vMax;
}
return v1;
}
float gravity(float v1, float v2, float v3){ //y pos, floor num, gravity num
if(v1<v2){
v1 += v3;
}
if(v1>v2){
v1 = v2;
}
return v1;
}
}

voytec2k

Re: Collision! PLEASE help!

11 months ago

can someone please help me?

PhiLho

Re: Collision! PLEASE help!

11 months ago

Do you know http://processing.org/learning/topics/ > Motion examples?
They show examples of circle-circle collision, for example. You just need to use dist() to check that.
There are also examples of rect-rect collision, on the wiki for example.

voytec2k

Re: Collision! PLEASE help!

11 months ago

thank you for the response!
I'm aware of the reference pages, I came on here because I couldn't get it to work and wanted some help with my code from the pros.

If anyone has the time to download my code and try to help I would be very grateful :)

PhiLho

Re: Collision! PLEASE help!

11 months ago

I fear I lack time to go through all your code and find the parts that need to be fixed...
I see your Sprite class has a hitDetect() function, but you never call it... You also have a checkCollisionMissile() method.
It should return true, for example, if the collision is detected. Or change the state of the object, marking it as dead.
If dead, either you remove it from the list, or you just stop to draw it.
The main loop can check the list of targets, to see if they are all dead, to see if the game is ended.

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