import objectdraw.*;
import java.awt.*;

/**
 *  This program creates a garden of up to 10 flowers, creating a
 *  flower each time the user presses the mouse button.  Any
 *  existing flowers grow when the user drags the mouse.  The flowers 
 *  grow to a specified maximum height (which is a parameter sent to 
 *  the Flower construct) and then "bloom."  Clicking on a flower's 
 *  petals changes their color randomly.  If the mouse leaves the 
 *  window and then re-enters, the canvas is cleared. 
 */
public class Garden extends FrameWindowController {

    private static final int WINDOW_SIZE = 600;
    private static final int MAX_FLOWER_HEIGHT = 200;

    private static final int MAX_NUM_FLOWERS = 10;

    // create array of Flowers and keep track of how many there are
    private Flower[] garden;
    private int currentNumFlowers;

    public void begin() {
        resize(WINDOW_SIZE, WINDOW_SIZE);

        garden = new Flower[MAX_NUM_FLOWERS];
        currentNumFlowers = 0;
    }

    // Create a new flower if the maximum number of
    // flowers has not been reached or change the color of 
    // the flower clicked on.  NOTE:  if the user clicks
    // on a flower when the maximum number of flowers
    // has not been reached,. the clicked-on flower will
    // change colors and a new flower will NOT be created
    public void onMousePress(Location point) {

        // change color of flower if one was clicked on;
        // keep track of whether a flower was clicked on
        boolean clickedInFlower = false;
        for (int i = 0; i < currentNumFlowers; i++) {
            if (garden[i].flowerContains(point)) {
                garden[i].changeColor();
                clickedInFlower = true;
            }
        }

        // create a new flower only if there is room for more
        // flowers and if the user did not click on a flower
        // (we don't want one flower growing out of the petals
        // of another flower)
        if (!clickedInFlower && currentNumFlowers < garden.length) {
            garden[currentNumFlowers] = new Flower(point, MAX_FLOWER_HEIGHT, canvas);
            currentNumFlowers++;
        }

    }

    // make all the existing flowers grow
    public void onMouseDrag(Location point) {

        for (int i = 0; i < currentNumFlowers; i++) {
            garden[i].grow();
        }  

    }

    // clear the canvas to start again when mouse enters 
    // into window
    public void onMouseEnter(Location point) {
        canvas.clear();
        currentNumFlowers = 0;
    }

}