final/src/GenericSprite.java

/* PlayerBall class defines behaviours for the player-controlled ball  

child of Rectangle because that makes it easy to draw and check for collision

In 2D GUI, basically everything is a rectangle even if it doesn't look like it!
*/ 
import java.awt.*;
import java.awt.event.*;
import java.io.IOException;
import java.io.Serializable;

public class GenericSprite extends Rectangle implements Serializable {

  public double yVelocity;
  public double xVelocity;
  public final double SPEED = 20; //movement speed of ball
  public final double speedCapx = 50;

  public final double speedCapy = 20;
  public int WIDTH; //size of ball
  public int HEIGHT; //size of ball
  public boolean rightPressed = false;
  public boolean leftPressed = false;
  public boolean upPressed= false;
  public boolean downPressed = false;
  public boolean isGrounded = false;

  public boolean isPlayer = false;
  //constructor creates ball at given location with given dimensions
  // TODO: reverse order of height and width
  public GenericSprite(int x, int y, int height, int width){
    super(x, y, width, height);
    WIDTH = width;
    HEIGHT = height;
  }


  //called from GamePanel when any keyboard input is detected
  //updates the direction of the ball based on user input
  //if the keyboard input isn't any of the options (d, a, w, s), then nothing happens
  public void keyPressed(KeyEvent e){

  }

  //called from GamePanel when any key is released (no longer being pressed down)
  //Makes the ball stop moving in that direction
  public void keyReleased(KeyEvent e){

  }

  //called from GamePanel whenever a mouse click is detected
  //changes the current location of the ball to be wherever the mouse is located on the screen
  public void mousePressed(MouseEvent e) throws SpriteException, IOException {

  }

  public void mouseReleased(MouseEvent e) {

  }
  public void move() throws IOException {

  }

  public void capSpeed(){
    if(xVelocity>speedCapx){
      xVelocity = speedCapx;
    } else if(xVelocity<-1*speedCapx) {
      xVelocity = -1*speedCapx;
    }
    if(yVelocity>speedCapy){
      yVelocity = speedCapy;
    } else if(yVelocity<-1*speedCapy) {
      yVelocity = -1*speedCapy;
    }
  }

  public boolean collide(Tile tile, double x, double y){
    if(tile==null){return false;}
    if(!tile.collision){
      return false;
    }
    if(x+WIDTH>tile.x&&x<tile.x+Tile.length&&y-tile.y<Tile.length&&tile.y-y<HEIGHT){
      return true;
    }
    return false;
  }

  public boolean canUpdate(double x, double y){
    boolean canUpdate = true;
    int lowX = Math.max(0, (this.x+GamePanel.GAME_WIDTH/2)/Tile.length-4);
    int highX = Math.min(lowX + 8, GameFrame.game.map.length);
    int lowY = Math.max(0,(this.y/Tile.length)-6);
    int highY = Math.min(lowY + 12, GameFrame.game.map[0].length);
    for(int i=lowX; i<highX; i++) {
      for (int j = lowY; j < highY; j++) {
        if (GameFrame.game.map[i][j] != null) {
          if (collide(GameFrame.game.map[i][j], this.x + x, this.y + y)) {
            if (GameFrame.game.map[i][j].isFinish&&isPlayer) {
              LevelManager.nextLevel();
              return true;
            }
            canUpdate = false;
            break;
          }
        }
      }
    }
    return canUpdate;
  }
  //called frequently from the GamePanel class
  //draws the current location of the ball to the screen
  public void draw(Graphics g){


  }
  
}