2017/2/10
public void act()
{
Actor a=this.getOneIntersectingObject(bullet.class);
if(a!=null&&m==0)
{
this.getWorld().removeObject(a);
this.setImage("x.png.18.jpg");
m=1;
World myWorld = getWorld();
myWorld.addObject(new Message2(),600,550);
}
m=1;
if(Greenfoot.isKeyDown("space")&&m==1)
{
this.setImage("Python.png");
}
if(a!=null&&m==1)
{
this.getWorld().removeObject(a);
this.setImage("x.png.18.jpg");
World myWorld = getWorld();
myWorld.addObject(new Message2(),600,550);
}
}
}
import greenfoot.*;
public class QuestionWorld extends World
{
private String[] questions =
{
"How high is the Eiffel Tower?",
"Which of the following is a fruit?",
"What is the cube root of 166375?"
};
private String[][] answers = //first one = correct answer
{
{"324 m", "314 m", "334 m", "344 m"},
{"Apple", "Tomato", "Cucumber", "Pumpkin"},
{"55", "65", "75", "85"}
};
private Actor question = new Actor() {};
private Actor[] answer;
private int lastQuestion = -1;
private int score = 0;
public QuestionWorld()
{
super(600, 400, 1);
GreenfootImage bg = new GreenfootImage(getWidth(), getHeight());
bg.setColor(new Color(0,255,255));
bg.fill();
setBackground(bg);
addObject(question, getWidth()/2, 100);
createNewQuestion();
Greenfoot.start();
}
private void createNewQuestion()
{
if (answer != null)
{
for (int i=0; i<4; i++) removeObject(answer[i]);
}
answer = new Answer[4];
int random;
do
{
random = Greenfoot.getRandomNumber(questions.length);
}
while(random==lastQuestion);
lastQuestion = random;
question.setImage(new GreenfootImage(questions[random], 30, Color.BLACK, new Color(0,0,0,0)));
question.setLocation(100+question.getImage().getWidth()/2, question.getY());
int[] randomPosition = {-1, -1, -1, -1};
for (int i=0; i<4; i++)
{
whileLoop: while (true)
{
int r = Greenfoot.getRandomNumber(4);
for (int j=0; j<i; j++)
{
if (randomPosition[j] == r) continue whileLoop;
}
randomPosition[i] = r;
break;
}
answer[i] = new Answer(i==0, answers[random][i]);
addObject(answer[i], 100+answer[i].getImage().getWidth()/2, 200+randomPosition[i]*30);
}
}
private void result(boolean correct)
{
score += correct?1:-1;
createNewQuestion();
}
private class Answer extends Actor
{
private boolean correct;
private int timer;
private String answer;
public Answer(boolean correct, String answer)
{
this.answer = answer;
this.correct = correct;
updateImage(null);
}
private void updateImage(Color background)
{
Color c = background;
if (c==null) c = new Color(0,0,0,0); //this line can be removed when Greenfoot 3.1.1 is released
setImage(new GreenfootImage(answer, 20, Color.BLACK, c));
}
public void act()
{
if (Greenfoot.mousePressed(this))
{
timer = 55;
updateImage(correct?Color.GREEN:Color.RED);
}
if (timer>0)
{
timer--;
if (timer==0) result(correct);
}
}
}
}import greenfoot.*;
public class QuestionWorld extends World
{
private String[][] questions = //first one=question, second one=correct answer
{
{"How high is the Eiffel Tower?", "324 m", "314 m", "334 m", "344 m"},
{"Which of the following is a fruit?", "Apple", "Tomato", "Cucumber", "Pumpkin"},
{"What is the cube root of 166375?", "55", "65", "75", "85"}
};
private Actor question = new Actor() {};
private Actor[] answer;
private int lastQuestion = -1;
private int score = 0;
public QuestionWorld()
{
super(600, 400, 1);
GreenfootImage bg = new GreenfootImage(getWidth(), getHeight());
bg.setColor(new Color(0,255,255));
bg.fill();
setBackground(bg);
addObject(question, getWidth()/2, 100);
createNewQuestion();
Greenfoot.start();
}
private void createNewQuestion()
{
if (answer != null)
{
for (int i=0; i<4; i++) removeObject(answer[i]);
}
answer = new Answer[4];
int random;
do
{
random = Greenfoot.getRandomNumber(questions.length);
}
while(random==lastQuestion);
lastQuestion = random;
question.setImage(new GreenfootImage(questions[random][0], 30, Color.BLACK, new Color(0,0,0,0)));
question.setLocation(100+question.getImage().getWidth()/2, question.getY());
int[] randomPosition = {-1, -1, -1, -1};
for (int i=0; i<4; i++)
{
whileLoop: while (true)
{
int r = Greenfoot.getRandomNumber(4);
for (int j=0; j<i; j++)
{
if (randomPosition[j] == r) continue whileLoop;
}
randomPosition[i] = r;
break;
}
answer[i] = new Answer(i==0, questions[random][i+1]);
addObject(answer[i], 100+answer[i].getImage().getWidth()/2, 200+randomPosition[i]*30);
}
}
private void result(boolean correct)
{
score += correct?1:-1;
createNewQuestion();
}
private class Answer extends Actor
{
private boolean correct;
private int timer;
private String answer;
public Answer(boolean correct, String answer)
{
this.answer = answer;
this.correct = correct;
updateImage(null);
}
private void updateImage(Color background)
{
Color c = background;
if (c==null) c = new Color(0,0,0,0); //this line can be removed when Greenfoot 3.1.1 is released
setImage(new GreenfootImage(answer, 20, Color.BLACK, c));
}
public void act()
{
if (Greenfoot.mousePressed(this))
{
timer = 55;
updateImage(correct?Color.GREEN:Color.RED);
}
if (timer>0)
{
timer--;
if (timer==0) result(correct);
}
}
}
}