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Samuaelk
Samuaelk wrote ...

2021/4/15

How to animate multiple sprites?

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Samuaelk Samuaelk

2021/4/21

#
I put the line into the code, but instead of the images loading, it is only showing a green foot logo Here is the revised Hero class code.
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public class Hero extends Mover
{
    String imgSet;
    GreenfootImage[] images = new GreenfootImage[8];
 
    private static final int jumpStrength = 20;
    private int level;
    private int jumped = 0;
 
     
    public Hero()
    {
 
        changeImage(1);
         
        level = 1;
    }
 
    public void changeImage (int x)
    {
        if (x == 1)
        {
            imgSet = "wizard_1";
        }
        else if (x == 2)
        {
            imgSet = "princess";
        }
        else if (x == 3)
        {
            imgSet = "goblin_2";
        }
        else if (x == 4)
        {
            imgSet = "barbarian_1";
        }
        for (int i=0; i<8; i++)
            images[i] = new GreenfootImage(imgSet+"_run_00"+(i+1)+".png");
    }
 
    public void act()
    {
        if (getWorld() instanceof CharSelect) return;
        checkKeys();       
        checkFall();
        checkNextLevel();
        landOnTop();
 
    }
 
    private void checkKeys()
    {
        if (Greenfoot.isKeyDown("left") )
        {
 
            moveLeft();
        }
        if (Greenfoot.isKeyDown("right") )
        {
 
            moveRight();
        }
        if (Greenfoot.isKeyDown("up") )
        {
            if (onGround())
                jump();
        }
    }   
 
    private void jump()
    {
        vSpeed= -jumpStrength;
        fall();
        jumped++;
    }
 
    public void landOnTop()
    {
        if (isTouching(Ground.class))
        {
            setLocation(getX(), getY() - 1);
        }
    }
 
    private void checkFall()
    {
        if (onGround()) {
            setVSpeed(0);
        }
        else {
            fall();
        }
    }
 
    /**
     * Check whether we should go to the next level, and if yes, start the next level.
     */
    private void checkNextLevel()
    {
        if (getX() == getWorld().getWidth()-1) {
            if (level == 1) {
                level = 2;
                getWorld().removeObject(this);
                Greenfoot.setWorld(new Level2(this));
            }
            else {
                level = 1;
                getWorld().removeObject(this);
                Greenfoot.setWorld(new Level1(this));
            }
        }
    }
 
}
danpost danpost

2021/4/21

#
Samuaelk wrote...
I put the line into the code, but instead of the images loading, it is only showing a green foot logo
danpost wrote...
At the end of the method, use a for loop to load the images into the array and, after that, set the first image to the hero.
Samuaelk Samuaelk

2021/4/21

#
To set the image do I do what I previously had in my code? Like this part?
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if (x == 1)
        {
            setImage(i1);
        }
Samuaelk Samuaelk

2021/4/22

#
Please help me with this, ASAP, because this is for an important assignment. Sorry for the trouble
danpost danpost

2021/4/25

#
Samuaelk wrote...
To set the image do I do what I previously had in my code? Like this part? << Code Omitted >>
No. Use:
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setImage(images[0]);
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