int nf=7,nd=6,nb=nd+2;
Fish[] school=new Fish[nf];
Diver[] boats=new Diver[nd];
Button[] clickers=new Button[nb];
color[] colorArray={#FF0000,#FF9900,#FFFF00,#00FF00,#00FFFF,#FF00FF,#6666FF,#999999};
String title="Diver and fish (version 7:  arrays)";
String author="B.A.Martin";
float surface=100,z,bottom=480;
int score=0;boolean bang=false;
void setup(){size(640,480);noStroke();rectMode(CORNER);restart();}void restart(){
float y=surface+50;for(int j=0;j<nf;j++){school[j]=new Fish(0,20,y);y+=50;}
float x=50;z=surface;for(int j=0;j<nd;j++){color c=colorArray[j];int kind=1+j%2;
clickers[j]=new Button("# "+j,kind,x,50,c);clickers[j].c=c;
boats[j]=new Diver(kind,x,surface,j,c);boats[j].c=c;x+=100;}
clickers[nd]=new Button("RESTART",3, width-144,bottom-32,colorArray[6]);
clickers[nd+1]=new Button("QUIT",3, width-64,bottom-32,colorArray[7]);
}void keyPressed(){if(key=='q')exit();if(key=='r')restart();
if(key>='0'&&key<='9'){int n=key-'0';boats[n-1].dive();}if(key=='!')bang=!bang;}
void mousePressed(){
if(clickers[nd].hit(mouseX,mouseY)){restart();}
if(clickers[nd+1].hit(mouseX,mouseY)){exit();}
bang=false;for(int j=0;j<nd;j++){
if(clickers[j].hit(mouseX,mouseY)){boats[j].dive();}}
for(int j=0;j<nf;j++){if(school[j].hit(mouseX,mouseY)){
school[j].reset();}} for(int j=0;j<nd;j++){
if(boats[j].hit(mouseX,mouseY)){boats[j].reset();}}
}void draw(){scene();
if(key=='/'){help();return;}
if(key=='?'){help();return;}
if(bang){background(255);help();return;}
action();showAll();fill(0);
text(title,width/3,20);text(author,20,height-10);
score=0;for(int j=0;j<nd;j++){score+=boats[j].total;};
text("SCORE= "+score,width*3/4,20);
text("Click numbered button to dive for fish.  \nFor help, press ? or ! key.",width/3,height-22);
}void scene(){
background(150,200,255);fill(50,150,100);rectMode(CORNER);rect(0,100,width,height);
}void showAll(){
for(int j=0;j<nf;j++){school[j].show();
}for(int j=0;j<nd;j++){boats[j].show();
}for(int j=0;j<nb;j++){clickers[j].show();}}
void action(){
for(int j=0;j<nf;j++){school[j].move();
}for(int j=0;j<nd;j++){boats[j].move();
}for(int j=0;j<nd;j++){for(int k=1;k<nf;k++){
boats[j].net(school[k]);}}
}class Fish{
float x,y,dx=2,dy=0;float w=30,h=20;int r,g,b;int n;Fish(int n,float x,float y){
this.x=x;this.y=y;this.n=n;this.dx=random(0.25,2.5);randomcolor();
}void randomcolor(){
r=int(random(50,255));g=int(random(50,150));b=int(random(50,200));
}void move(){x += dx;y += dy;if(x>width){reset();}
}void reset(){x=0;dx=random(0.25,3);randomcolor();}void show(){
fill(r,g,b);ellipse(x,y,w,h);
triangle(x-w/2+8,y,x-w/2-10,y-10,x-w/2-10,y+10);
ellipse(x+w/2-6,y-6,6,6);fill(255,0,0);ellipse(x+w/2-6,y-6,3,3);
}boolean hit(float xx,float yy){return(dist(xx,yy,x,y)< w);}}
class Diver{
float x,y,dx=1,dy=0;int r,g,b;int n=0;int kind=1;int caught=0,total=0;color c;
Diver(int k,float x,float y,int n,color c){kind=k;this.x=x;this.y=y;this.n=n;this.c=c;
}Diver(float x,float y,int r,int g,int b){
this.x=x;this.y=y;this.r=r;this.g=g;this.b=b;nd++;this.n=nd;
}void show(){
fill(c);rect(x,z,40,-20);
if(kind==1)ellipse(x+20,z-25,20,20);
else rect(x+10,z-30,20,20);
if(dx>0)triangle(x+40,z,x+40,z-20,x+40+20,z-20);
if(dx<0)triangle(x,z,x,z-20,x-20,z-20);
fill(0);text("#"+n,x+5,z-5);text(total,x+12,z-20);
fill(c);if(dy>0){triangle(x,y,x-30,y+20,x+30,y+20);text(caught,x+20,y-10);
}if(dy<0){ellipse(x,y,25,35);}}
void move(){if(dy==0){if(x<50)dx=-dx;if(x>width-50)dx=-dx;x += dx;
}else{y+=dy;if(y>height-20)dy=-3;if(y<z+20){
y=z;dy=0;total += caught;caught=0;}}
}void dive(){y=z+50;dy=1;caught=0;
}void net(Fish f){if(dy==0)return;if(dist(x,y,f.x,f.y)< 50){     
if(dy>0){caught++;f.reset();
}else{caught=0;background(255,0,0);}}
}boolean hit(float xx,float yy){
return(dist(xx,yy,x,y)< 30);
}void reset(){if(dy==0)x=50;if(dy>0)y=z+20;if(dy<0)y=bottom;}}
class Button{float x,y;float w=60,h=30;int r=200,g=200,b=200;int kind=2;int n=0;
String s="# ";color c;Button(String s,int kind,float x,float y,color c){
this.s=s;this.kind=kind;this.x=x;this.y=y;this.c=c;
}Button(float x,float y,int r,int g,int b){
this.x=x;this.y=y;this.r=r;this.g=g;this.b=b;nb++;this.n=nb;
}Button(String s,int kind,float x,float y){
this.s=s;this.kind=kind;this.x=x;this.y=y;
}void show(){fill(c);if(kind==1){ellipse(x,y,w,h);
}if(kind==2){rectMode(CENTER);rect(x,y,w,h);
}if(kind==3){triangle(x,y-h,x-w/2,y+15,x+w/2,y+15);
}if(kind==5){rect(x,y,w,h,15);}fill(0);
if(n>0)text(s+nb,x+10-w/2,y+4.5);
else text(s,x+10-w/2,y+10);
}boolean hit(float xx,float yy){if(kind==2||kind==5){
return(xx>x-w/2 && xx<x+w/2 && yy>y-h/2 && yy<y+h/2);
}return(dist(xx,yy,x,y)< w);}}
// Copyright 2014; Tripodics Computing Services ///'?
//// DO NOT COPY ANY CODE FROM THE ABOVE! ////




//// Boat travels back and forth on surface.
//// When corresponding button is clicked:
//      1. Boat stops moving.
//      2. Diver descends slowly to bottom, with net extended.
//      3. If diver is near a fish, that fish is caught (and another fish starts at the left).
//      4. At the bottom, the diver ascends, going up quickly (avoiding fish)
//      5. At the surface, diver dumps fish onto boat and boat continues moving.


void help() {
  //// Display the story. ////
  String story= ""; 
  story+=  "Fish swim from left to right.\n";
  story+=  "When a fish reaches right side, a new fish starts at left (with random dx).\n";
  story+=  "Clicking on a fish also sends it back to start at the left.\n";
  story+=  "\n";

  story+=  "Each boat moves back and forth, across screen.\n";
  story+=  "Clicking on a moving boat also sends it back to start at the left.\n";
  story+=  "\n";

  story+=  "Buttons come in three kinds:  1 for ellipse, 2 for rectangle, 3 for triangle.\n";
  story+=  "Use alternating kinds 1 & 2 for diver buttons.  Use triangle kind (3) for other buttons (quit & reset).\n";
  story+=  "NOTE:  Each diver button corresponds to a boat, using the SAME number, color, and kind.\n";
  story+=  "\n";

  story+=  "When a diver button is clicked, corresponding boat stops and diver descends slowly, catching fish in net.\n";
  story+=  "At bottom, diver ascends rapidly with caught fish.  If ascending diver hits another fish, his catch is lost!\n";
  story+=  "Clicking on diver sends him back to the top or bottom (possibly catching more fish or avoiding loss).\n";  
  story+=  "\n";

  story+=  "When diver reaches surface, boat moves on, displaying total number of fish.\n";
  story+=  "Total catch for each boat is displayed in an ellipse or rectangle (corresponding to its button type).\n";
  story+=  "Score is the sum of all boat totals.\n";
  story+=  "\n";
  //
  fill(0);
  textSize(12);
  text( story, 20, surface+20 );
}