Bird Landing6
From Physical Programming
Coding
When the program runs the code, it would know what are the code refer to:
- int - is for integer
- int frame - having first frame 0
- int frame2 - (We make this just to random the frame for new bird to appear)
- int numFrames - use for images of the bird (3 images facing left and another 3 facing right)
- int countLandingBird - use to count how many birds stop at the tree, first it starts from zero
- int maximumBird - use for how many birds can be on the tree
- PImage[] - to create an image object (which would be loaded further in the code)
- new PImage - to call out new images
- [numFrames] - (parameter to 3 images)
- int i - refer to it as a integer no.
- BirdList birdList - we create a method called birdList, (which its function would be further in the code)
int frame = 0; int frame2 = 0; int numFrames = 3; int countLandingBird = 0; int maximumBird = 15; PImage[] images1 = new PImage[numFrames]; PImage[] images2 = new PImage[numFrames]; PImage bg; int i; BirdList birdList;
- void setup() - to tell variables for the environment
void setup()
{
frameRate(25); //number of frame per second
size(663,500); //size of screen (x,y) pixel
bg = loadImage("Black_Tree.gif"); //load images
images1[0] = loadImage("0001.gif"); //images should be in the file
images1[1] = loadImage("0002.gif"); //called "data" in current sketch
images1[2] = loadImage("0003.gif");
images2[0] = loadImage("0011.gif"); //there are 2 collections of images (images1 & images2)
images2[1] = loadImage("0021.gif"); //images1 are images of bird facing right
images2[2] = loadImage("0031.gif"); //images2 are images of bird facing left
birdList = new BirdList(); //call out new class called Birdlist
for(i=0;i<15;i++) //add new bird 15 times
{ //(in another word there will be 15 birds at the start)
birdList.addBird(new Bird(random(0,663),random(0,500),int(random(0,2))));
} //random the bird anywhere in the screen, using any frame of the bird
}
- void mousePressed() - when mouse is press
void mousePressed()
{ //there will be one new bird
birdList.addBird(new Bird(mouseX,mouseY,frame)); //at the mouse press position
}
- void draw() - function drawing, working frame by frame, keeps on looping til program is stopped.
void draw(){
background(255,255,255); //colour of the background (R,G,B)
image(bg,0,200); //putting image called bg at 0,200 (x,y)
birdList.run(); // we make birdList as a method above. Now asking it to run
frame = (frame+1)%numFrames; //calling out frame 0, 1, 2 (continuously in order)
frame2 = (frame2+1)%200; //(same as above) frame from 0 - 199
if(frame2 == int(random(0,100)))
//if frame2 (above) is equal to the random number from 0-100
birdList.addBird(new Bird(random(-30,-20),random(0,400),frame));
//add new bird random offscreen of left side
if(frame2 == int(random(101,200)))
//same as above, but random offscreen of right side
birdList.addBird(new Bird(random(670,700),random(0,400),frame));
println(birdList.list.size()); //show no. of birds in the whole animation
println(countLandingBird); //show no. of birds on the tree
}
There are two class: BirdList and Bird. BirdList is for controlling the bird, while Bird is for giving variables to the coding in BirdList.
class BirdList
{
ArrayList list; //to manage list of birds (to make them function individually)
BirdList()
{
list = new ArrayList(); // list is a new set of ArrayList
}
void addBird(Bird b) //telling that "addBird" is to add 1 more "list"
{ //(which "list" is a new set of "ArrayList")
list.add(b);
}
This is really messy. Try to read it line by line; might help.
void run()
{
for (int i = 0; i < list.size(); i++) //it would do these(below) to every lists of bird
{
Bird b = (Bird) list.get(i); //take a list of bird and do it individually
if(b.originX <= 230) //b.originX is the x position of bird when it first run
{ //if b.originX is less than 230, which is the left of the tree
if(b.landPCT >= 1) //b.landPCT is taken from the equation of drawing the curve for bird to land
{ //b.landPCT equal to 1 when it stop at the tree
if(b.action.equals("Landing") && countLandingBird >= maximumBird)
{ //if its action is stated to be "Landing" already and there are more than 15 birds
b.action = "flyingOut"; //make its action to flyingOut
}
else if(b.action.equals("")) //if there is not statement for its action
{
b.action = "Landing"; //state that it is "Landing" and add one to countLandingBird
countLandingBird++;
}
if(countLandingBird < maximumBird && !b.action.equals("flyingOut"))
{ //if there is lesser than 15 birds and its action is not "flyingOut"
image(images1[2], b.endX, b.endY); //use an image "images1[2]"
b.age++; //add1 to b.age (to count how long is the bird stay on the tree)
}
else if(b.action.equals("flyingOut")) //if it is "flyingOut"
{
if(b.flyPCT == -0.01) //b.flyPCT is for the bird going to fly off the tree
{
b.landOriginX = b.endX; //create a new name for its x and y
b.landOriginY = b.endY; //b.end is b.landOrigin
b.endX = random(430,500); //random a destination to fly out
b.endY = random(20,150);
b.distX = b.endX - b.landOriginX;
b.distY = b.endY - b.landOriginY;
b.flyPCT = b.flyPCT + 0.01; //add 0.01 to make its PCT a 0
b.action = "flyingOut"; //state its action as "flyingOut"
countLandingBird--; //deduct one countLandingBird
}
else if(b.flyPCT >= 0 && b.flyPCT < 1) //if the bird is flying use this path
{
b.currentX = b.landOriginX + (b.flyPCT * b.distX);
b.currentY = b.landOriginY + (pow(b.flyPCT, b.exponent) * b.distY);
b.flyPCT += b.step;
image(images1[(b.birthframe+frame)%numFrames], b.currentX, b.currentY);
}
else if(b.flyPCT >= 1) //if the bird reach its destination
{
b.enterZone = false; //state that it is not in the tree zone
b.age = 0; //state its age on the tree as zero
b.landPCT = 0; //make its landPCT zero
}
}
}
else
{
image(images1[(b.birthframe+frame)%numFrames], b.currentX, b.currentY);
// continue flying
if(((b.currentX > 40 && b.currentX < 420 && b.currentY > 150 && b.currentY < 410) || b.enterZone == true || b.age >= 750) && !b.action.equals("flyingOut"))
{ //(if it is in the enterzone or if it hasn't land for 750 frame) and it is not in the process of flying out
if(b.enterZone == false) //if its enterZone is false
{
b.landOriginX = b.currentX;
b.landOriginY = b.currentY;
b.endX = random(b.currentX,420); //random its landing destination
b.endY = random(abs(sqrt(sq(190)-sq(b.endX-230))-410),390); //random in tree area
b.distX = b.endX - b.landOriginX;
b.distY = b.endY - b.landOriginY;
b.enterZone = true; //make enterZone true
}
else //if b.enterZone is true, appear in this curve path
{
b.currentX = b.landOriginX + (b.landPCT * b.distX);
b.currentY = b.landOriginY + (pow(b.landPCT, b.exponent) * b.distY);
b.landPCT += b.step; //add landPCT
}
}
else if(b.enterZone == false) //if b.enterZone is false
{
if(b.currentX > 700) //if it is off the screen (right side)
{
if(b.action.equals("")) //if there is no action
{
b.currentX = -30; //make it reappear in (left side)
b.currentY += int(random(-3, 3)); //add current y position (random from -3 to 3)
}
else if(b.action.equals("flyingOut")) // if the action is flyOut
{
list.remove(i); // remove it from the list
}
}
else //if it is not off the screen, continue flying forward
{
b.currentX += 2;
b.currentY += int(random(-3, 3));
}
b.age+=1; //add its age for flying
}
}
}
else if(b.originX > 230) // these (below) is just another set of action for bird from right side
{
if(b.landPCT >= 1)
{
if(b.action.equals("Landing") && countLandingBird >= maximumBird)
{
b.action = "flyingOut";
}
else if(b.action.equals(""))
{
b.action = "Landing";
countLandingBird++;
}
if(countLandingBird < maximumBird && !b.action.equals("flyingOut"))
{
image(images2[2], b.endX, b.endY);
b.age++;
}
else if(b.action.equals("flyingOut"))
{
if(b.flyPCT == -0.01)
{
b.landOriginX = b.endX;
b.landOriginY = b.endY;
b.endX = random(0,30);
b.endY = random(20,150);
b.distX = b.endX - b.landOriginX;
b.distY = b.endY - b.landOriginY;
b.flyPCT = b.flyPCT + 0.01;
b.action = "flyingOut";
countLandingBird--;
}
else if(b.flyPCT >= 0 && b.flyPCT < 1)
{
b.currentX = b.landOriginX + (b.flyPCT * b.distX);
b.currentY = b.landOriginY + (pow(b.flyPCT, b.exponent) * b.distY);
b.flyPCT += b.step;
image(images2[(b.birthframe+frame)%numFrames], b.currentX, b.currentY);
}
else if(b.flyPCT >= 1)
{
b.enterZone = false;
b.age = 0;
b.landPCT = 0;
}
}
}
//image(images2[2], b.endX, b.endY);
else
{
image(images2[(b.birthframe+frame)%numFrames], b.currentX, b.currentY);
if(((b.currentX > 40 && b.currentX < 420 && b.currentY > 150 && b.currentY < 410) || b.enterZone == true || b.age >= 750) && !b.action.equals("flyingOut"))
{
if(b.enterZone == false)
{
b.landOriginX = b.currentX;
b.landOriginY = b.currentY;
b.endX = random(40,b.currentX);
b.endY = random(abs(sqrt(sq(190)-sq(b.endX-230))-410),390);
b.distX = b.endX - b.landOriginX;
b.distY = b.endY - b.landOriginY;
b.enterZone = true;
}
else
{
b.currentX = (b.landOriginX + (b.landPCT * b.distX));
b.currentY = (b.landOriginY + (pow(b.landPCT, b.exponent) * b.distY));
b.landPCT += b.step;
}
}
else if(b.enterZone == false)
{
if(b.currentX < -30)
{
if(b.action.equals(""))
{
b.currentX = 700;
b.currentY += int(random(-3, 3));
}
else if(b.action.equals("flyingOut"))
{
list.remove(i);
}
}
else
{
b.currentX -= 2;
b.currentY += int(random(-3, 3));
}
b.age+=1;
}
}
}
}
}
}
- float - datatype for a decimal point number
- boolean - datatype for only true or flase
- String - a method to state what it is as a quote (using for comparing or searching)
class Bird
{
int age = 0; // counting time for its action (on tree and flying)
float originX = 0; //its position when it first runs
float originY = 0;
float landOriginX = 0; //its position when it is landing
float landOriginY = 0;
float currentX = 0; //its current position
float currentY = 0;
int birthframe = 0; //its first frame when it runs
float endX = 0; //its destination
float endY = 0;
float distX = 0;
float distY = 0;
float exponent = 4;
float step = 0.01; //for steps of PCT
float landPCT = 0; //PCT >0 is a start of going to the destination
//PCT=1 is when it reaches the destination
float flyPCT = -0.01;
boolean enterZone = false;
String action = "";
Bird(float originX, float originY,int birthframe)
{
this.originX = originX;
this.originY = originY;
this.birthframe = birthframe;
this.currentX = originX;
this.currentY = originY;
}
}
