/*
Complete description of state:

   3 pods
   9 plants per pod
   3 bytes of input per plant: nearness,loudness,pitch
   5 bytes of output per plant: r,g,b,height,angle
*/


import java.awt.*;

public class PlantData extends BufferedApplet
{
   int w = 0, h = 0;
   Graphics g;
   Font font = new Font("Helvetica", Font.PLAIN, 14);
   int mx = 0, my = 0;

   // ALL THE PARAMETERS

   final static int NEAR  = 0;
   final static int LOUD  = 1;
   final static int PITCH = 2;
   final static int RED   = 3;
   final static int GREEN = 4;
   final static int BLUE  = 5;
   final static int UP    = 6;
   final static int TURN  = 7;
   final static int NDATA = 8;

   // THE PARAMETER NAMES

   String name[] = {"near","loud","pitch","red","green","blue","up","turn"};

   int nPlants = 27; // HOW MANY PLANTS THERE ARE

   // ALL THE PLANT DATA

   int data[][] = new int[nPlants][NDATA];

   // BACKGROUND COLOR TO TINT THE MIDDLE THIRD OF THE APPLET WINDOW

   Color offWhite = new Color(240, 240, 240);

   public void render(Graphics g) {
      if (w == 0) {
         w = bounds().width;
         h = bounds().height;
      }

      // SET JUST THIS ONE DATA VALUE TO NON-ZERO, TO TRY THINGS OUT

      data[0][RED] = 255;

      this.g = g;
      g.setFont(font);

      g.setColor(Color.white);
      g.fillRect(0, 0, w, h);
      g.setColor(offWhite);
      if (scrim)
         g.fillRect(x(3)-DX/6, 0, x(6)-x(3), h);


      for (int i = 0 ; i < 27 ; i++)
         drawPlant(i);
   }

   // PARAMETERS CONTROLLING WHERE THINGS WILL DRAW ON THE SCREEN

   int X0 =  20;
   int Y0 =  30;
   int DX =  85;
   int DY = 170;
   int DD =  15;

   // CONVERT PLANT ID TO X,Y COORDINATES

   int x(int i) { return X0 + DX * (i % 9); }
   int y(int i) { return Y0 + DY * (i / 9); }

   // CONVERT X,Y COORDINATES TO PLANT IT

   int i(int x, int y) {
      int i = (y - Y0) / DY * 9 + (x - X0) / DX;
      return clip(i, 0, nPlants-1);
   }

   // CONVERT X,Y OOORDINATES TO DATA PARAMETER WITHIN THIS PLANT

   int d(int x, int y) {
      int d = ((y - Y0) % DY) / DD;
      return clip(d, 0, NDATA-1);
   }

   void drawPlant(int i) {
      int x = x(i);
      int y = y(i);

      for (int d = 0 ; d < NDATA ; d++) {
         y += DD;
         boolean selected = i == i(mx,my) && d == d(mx,my);

	 // THE SELECTED ITEM PRINTS BLACK - ALL OTHERS PRINT BLUE

         g.setColor(selected ? Color.black : Color.blue);

	 // DRAW SELECTED AGAIN, ONE PIXEL OVER, TO MAKE IT LOOK THICKER

         for (int r = 0 ; r < (selected ? 2 : 1) ; r++) {
            g.drawString(name[d], x+r, y);
            g.drawString("" + data[i][d], x+r + 45, y);
         }
      }
   }

   public boolean mouseMove(Event e, int x, int y) {
      mx = x;
      my = y;
      damage = true;
      return true;
   }

   public boolean keyUp(Event e, int key) {
      boolean shift = (e.modifiers & Event.SHIFT_MASK) > 0;
      switch (key) {
      case 1004: incr(shift ?  16 : 1); break; // ARROW UP - INCR VALUES
      case 1005: incr(shift ? -16 :-1); break; // ARROW DOWN - DECR VALUES
      case ' ': scrim = ! scrim; break; // SPACE KEY TO TOGGLE CENTER TINT
      }
      damage = true;
      return true;
   }

   void incr(int delta) {
      int i = i(mx, my);
      int d = d(mx, my);
      data[i][d] = clip(data[i][d] + delta, 0, 255); // DON'T ALLOW ILLEGAL VALUES
   }

   int clip(int n, int lo, int hi) {
      return Math.max(lo, Math.min(hi, n));
   }

   boolean scrim = false; // INITIALLY, NO CENTER TINT
}