catfish.java

ssd1 E4.............................................

/**
 *  @author  A JiaYi
 *  @version 1.0.0	
 *  <p>Date:2005-4-28</P>	
 *  <p>This class is designed to move a catfish to the right, one cell at a time.
 *  A new catfish starts off with some amount of energy and expends some energy every time it moves. 
 *  If the catfish's energy falls below a certain threshold, it will appear tired.
 *  Otherwise, it will appear normal.
 *  Note that the catfish should stay within the boundary of the lake. </P>
 */
public class Catfish {

	/**
	* Location of the catfish - which column.
	*/
	private int column = 1;

	/** 
	* Energy level of catfish
	*/
	private int energyLevel = 10;

	/**
	* Location of catfish - the column
	* 
	* @return - an integer representing the column location of catfish.
	*/
	public int getColumn() {
		// Student: return the column value
		return column;
	}

	/**
	* Swim one cell to the right by incrementing the value stored in column by 1.
	*/
	public void swimRight() {
		// Student: Increment the value stored in column attribute by 1 and
		// decrement the value stored in energyLevel by 1 if the 
		// new value of column is less than or equal to 10.
		if (column + 1 <= 10) {
			column = column + 1;
			energyLevel = energyLevel-1;
		}
	}

	/**
	* get the image of catfish
	*
	* @return a String indicating the filename of catfish image
	*/
	public String getImage() {
		// Student: return the image filename that represents the catfish
		// The image of a tired catfish (a catfish with energyLevel less than 5)
		// is "/CatFish-tired.gif".
		// The iamge of a catfish that is not tired is "/CatFish.gif".
		String  imageFileName;
		if (energyLevel < 5)
			return  imageFileName = "/CatFish-tired.gif";
		else
			return  imageFileName = "/CatFish.gif";

	}
}