GD105-Week11

float xPos, yPos, xSpeed, ySpeed, gravity;

int dia;

PImage west = new PImage();

PImage drake = new PImage();

 /* @pjs preload="Kanye-West-PNG.png"; */

 /* @pjs preload="drake.png"; */

​

void setup(){

  size(1280,720);

  xPos = random(width);

  yPos = random(height);

  dia = 50;

  west = loadImage("Kanye-West-PNG.png");

  drake = loadImage("drake.png");

  //west.resize(size*2, size*2);

  xSpeed = 0;

  ySpeed = 0;

  gravity = 0.4;

}

​

void draw(){

  background(255);

  //how far is the target from the cursor?

  float distance = dist(mouseX, mouseY, xPos, yPos);

  //if it collides, use the speed of the cursor as the speed of the ball

  //to get the speed, you subtract the previous position from the current position

  //for example, if you traveled from position 0 to position 60 in 1 second

  //, the speed would be 60 positions/second

  if (distance < dia/2){

   xSpeed = mouseX - pmouseX;

   ySpeed = mouseY - pmouseY;

  }

  //every frame, gravity should be making ySpeed greater (pulling it downward)

  ySpeed += gravity;

  xPos += xSpeed;

  yPos += ySpeed;

  if (xPos < 0 + dia/2){

   xSpeed *= -1; 

   xPos = 0 + dia/2;

  }

  if (xPos > width - dia/2){

   xSpeed *= -1; 

   xPos = width - dia/2;

  }

  if (yPos < 0 + dia/2){

   ySpeed *= -1; 

   yPos = 0 + dia/2;

  }

  if (yPos > height - dia/2){

    //each time it bounces off the bottom, we create fake friction by making the speed 80% of what it was

    ySpeed *= -0.8;  

    xSpeed *=0.8;

    yPos = height - dia/2;

  }

​

  //these are examples of custom functions

  //when you "call" the functions in the next few lines, the parameters in the parentheses get passed into the function

  drawStuff("lol", 1);

  //in this example, our custom subtract function will print 40 into the console,

  //because 

  println(subtract(50,10));

  //our sayHi() function just prints "hi!" into the console whenever it is called

  sayHi();

}

int subtract(int a, int b){

  int sub = a - b;

  //return will teleport the value of sub back to wherever the function is called, so 40 will be passed into the println above

  return sub;

}

//in this example, the drawStuff function gets called above, "lol" gets passed into "passedString"

//and a value of 1 is assigned to growth

void drawStuff(String passedString, int growth){

  println("string= " + passedString);

  imageMode(CENTER);

  image(drake, mouseX, mouseY);

  dia+=growth;

  west.resize(dia*2, dia*2);

  ellipse(xPos, yPos, dia, dia);

 image(west, xPos, yPos);

}

​

void sayHi(){

 println("hi!"); 

}

​