Tree tree1;
Tree tree2;
Tree tree3;

TreeDry treeDry1;
TreeDry treeDry2;
TreeDry treeDry3;

int sandValue = 4000;

Sand[] sand = new Sand[sandValue];


void setup() {
  size(400, 400);

  rectMode(CENTER);

  tree1 = new Tree(175, 120); 
  tree2 = new Tree(325, 150); 
  tree3 = new Tree(55, 180);

  treeDry1 = new TreeDry(175, 120); 
  treeDry2 = new TreeDry(325, 150); 
  treeDry3 = new TreeDry(55, 180);

  for (int i = 0; i < sand.length; i++) {
    sand[i] = new Sand();
  }
}


void draw() {
  background(236, 200, 148);
  Pond();
  PondDry();

  tree1.displayTree();
  tree2.displayTree();
  tree3.displayTree();

  treeDry1.displayTreeDry();
  treeDry2.displayTreeDry();
  treeDry3.displayTreeDry();

  for (int i = 0; i < sand.length; i++) {
    sand[i].display();
    sand[i].update();
  }

  dialog();
}

void dialog() {

  if (mouseX < 133 && mousePressed == true) {
    System.out.println("WATER! Finally after all this time!");
    System.out.println(" ");
    delay(100);
  } 
  else if (mouseX > 133 && mouseX < 233 && mousePressed == true) {
    System.out.println("The sandstorm is so thick I'm losing sight of the oasis.");
    System.out.println(" ");
    delay(100);
  } 
  else if (mouseX > 233 && mousePressed == true) {
    System.out.println("Of course... It was just another mirage.");
    System.out.println(" ");
    delay(100);
  }
}

void Pond() { 


  noStroke();
  fill(145, 200, 230, 300-(mouseX*1.5));
  rect(180, 195, 80, 10);
  rect(230, 205, 20, 10); 
  rect(250, 215, 20, 10);
  rect(110, 215, 20, 10);
  rect(130, 205, 20, 10);
  rect(270, 225, 20, 10);

  fill(152, 215, 255, 300-(mouseX*1.5));
  rect(180, 230, 120, 40);
  rect(180, 220, 80, 40);
  rect(180, 230, 160, 20);
  rect(200, 255, 80, 10);
  rect(270, 235, 20, 10);
  rect(250, 245, 20, 10);
}

void PondDry() {

  noStroke();
  fill(179, 153, 116, -300+(mouseX*1.5));
  rect(180, 195, 80, 10);
  rect(230, 205, 20, 10); 
  rect(250, 215, 20, 10);
  rect(110, 215, 20, 10);
  rect(130, 205, 20, 10);
  rect(270, 225, 20, 10);

  fill(193, 165, 124, -300+(mouseX*1.5));
  rect(180, 230, 120, 40);
  rect(180, 220, 80, 40);
  rect(180, 230, 160, 20);
  rect(200, 255, 80, 10);
  rect(270, 235, 20, 10);
  rect(250, 245, 20, 10);
}

class Sand {

  PVector location;
  PVector velocity;
  color sandDensity = color(230, 195, 145, random(100, 255));

  Sand() {
    location = new PVector(random(-400, -5), random(0, 400));
    velocity = new PVector(random(2, 4), random(-0.1, 0.1));
  }

  void display() {
    rectMode(CENTER);
    noStroke();
    fill(sandDensity);
    rect(location.x, location.y, 5, 5);
  }

  void update() {
    location.add(velocity);

    if ((location.x > width) || (location.y > height)) {
      location.x = random(-50, -5);
      location.y = random(0, 400);
    }
  }
}

class Tree {

  float posX;
  float posY;

  Tree(float x, float y) {
    posX = x;
    posY = y;
  }

  void displayTree() {
    noStroke();
    fill(122, 103, 76, 300-(mouseX*1.5));
    rect(posX, posY, 10, 80);

    fill(92, 122, 76, 300-(mouseX*1.5));
    rect(posX, posY-35, 70, 10);
    rect(posX+5, posY-55, 120, 10);
    rect(posX-5, posY-45, 120, 10);
    rect(posX+15, posY-65, 40, 10);
    rect(posX+60, posY-35, 30, 10);
    rect(posX+35, posY-25, 20, 10);
    rect(posX-60, posY-35, 10, 10);
    rect(posX-35, posY-25, 20, 10);
    rect(posX-40, posY-15, 10, 10);
  }

  void Coconut() {
    fill(92, 122, 76, 300-(mouseX*1.5));
    rect(posX, posY-35, 70, 10);
  }
}

class TreeDry {

  float posX;
  float posY;

  TreeDry(float x, float y) {
    posX = x;
    posY = y;
  }

  void displayTreeDry() {
    noStroke();
    fill(122, 103, 76, -300+(mouseX*1.5));
    rect(posX, posY, 10, 80);

    fill(122, 103, 76, -300+(mouseX*1.5));
    rect(posX+10, posY-35, 30, 10);
    rect(posX-5, posY-25, 20, 10);
  }
}