/// Fish tank
      /// Victor Pineda 
      String title="Fish Tank";
      String author="Victor Pineda, CST112, Project 2";
  
      
      float left= 20, right=left+600, top=50, bottom=top+400;
      
      Fish es;
      Fish ce;
      
      int many=5;
      Fish[] school=  new Fish[many];
      
      void setup() {
        // setup
        size( 600, 500);
        reset();
      }
      
      void reset() {
        es= new Fish();
        ce= new Fish();
        //// Many fishes in array
             for (int i=0; i<many; i++) {
               school[i]=  new Fish();
             }
      }
      
      void draw() {
        /// next frame
        background(100, 100, 55);
        scene();
        moveall();
        showall();
      }
       
      void scene(){ // fish tank
        fill( 50, 50, 200 );
        rectMode(CORNERS);
        rect (left, top, right-50, bottom);
        fill(250,250,250);
        text( title, width-380, 30 ); /// text locations
        fill(0,0,0);
        text( author, 25, height-15 );
      }
      
      void moveall() {
        es.move();
        ce.move();
        //// Move all dogs in kennel.
             for (int i=0; i<many; i++) {
               school[i].move();
             }      
      } 
      
      
      void showall() { // Show fishes
         es.show();
         ce.show();
         es.r=200;
         for (int i=0; i<many; i++) {
               school[i].show();
             }  
      }
      
      void keyPressed() {   //  handler for keyboard
          background(0,0,0);
          if (key=='q') exit();
          background(255,255,255);
          if (key=='q') exit();
          if (key=='r') reset();
      }
      
      class Fish {
        /// draw, move, show fish
        float x=100, y=100, dx=0.2, dy=1;
        float w=50, h=30;
        int r=100, g=200, b=150; //body color
      
      void move(){
        if(x< left +50 || x> right -50 ) dx= -dx;
        if(y< top +50 || y> bottom -50) dy= -dx;
        
        dx= dx + random( -1, +1 );
        x= x + dx;
        y= y + dy;
      }
      
      void show() {
        // draw on screen
        fill (r, g, b); // body
        rectMode( CENTER );
        ellipse(x, y, w, h);
        
        //fish tail
        float tailf= x-40, tailb= x+40;
        if( dx>0) {
           fill(150, 50, 50);
            triangle(tailf+10, y, tailf-10, y-20, tailf-15, y+20);
        } else {
           fill(150, 50, 50);
            triangle(tailb-10, y, tailb+10, y-20, tailb+15, y+20);
        }
        
        // fish eye
          float eyef= x+16, eyeb= x-16;
          if( dx>0) {
            fill(250, 250, 250); 
             ellipse(eyef, y-10, 10, 10);
              fill(0, 0, 250); 
               ellipse(eyef, y-10, 4, 4);
         } else {
            fill(250, 250, 250); 
             ellipse(eyeb, y-10, 10, 10);
              fill(0, 0, 250); 
               ellipse(eyeb, y-10, 4, 4);
        }
        
         
       
         }
   }/// End class fish