You are a genius! How do you know how to do all this?
Gingervitis wrote ...
2013/3/3
Animating an object
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Yes. I'm sorry, I should have been more specific. I did mean the rocket in the MainMenu world. ( I added a separate class for the image changing so rocket doesn't exist in the MainMenu world anymore)
All I am doing is creating code to make it do what I want it to do, when I want it to do it, step by step.
Ok. I still need to show you my two world class codes. The Intro world has the delay for after the Rock has landed and I decided to do the platform animation directly on the background of the Menu (MainMenu) world. Here they are:
// the Intro world class code
import greenfoot.*;
public class Intro extends World
{
private int groundedTimer;
public Intro()
{
super (600, 500, 1);
setPaintOrder(Rock.class, Rocket.class);
addObject(new Rocket(), 203, 441);
addObject(new Rock(),10 ,10 );
}
public void act()
{
timerOne();
}
private void timerOne()
{
if (groundedTimer<100 && ((Rock)getObjects(Rock.class).get(0)).isGrounded())
{
groundedTimer++;
if (groundedTimer==100)
{
addObject(new Turtle(), 203, 441);
addObject(new Skip(), 493, 132);
}
}
}
}
// the Menu (MainMenu) world class code
import greenfoot.*;
import java.awt.Color;
public class Menu extends World
{
private int platformSize;
public Menu()
{
super(600, 500, 1);
getBackground().setColor(Color.darkGray);
getBackground().fillOval(260, 211, 88, 82);
}
public void act()
{
if(platformSize<215)
{
platformSize++;
GreenfootImage platform = new GreenfootImage(2+2*platformSize/5, 2+2*platformSize/5);
platform.setColor(Color.lightGray);
platform.fillOval(0, 3, 2*platformSize/5, 2*platformSize/5-6);
getBackground().drawImage(platform, 304-platformSize/5, 252-platformSize/5);
}
}
}I do not know if the I have the correct color changing in the Menu world (whether it goes from darkGray to lightGray, or the other way around). I will post an updated version of the Menu class after I add the turtle to it.
I haven't added the MainMenu code yet, but when I added the Intro code, it created two rocks and two turtles, should I take out the code from the actor classes that creates those objects?
The code in the MainMenu is perfect!!
You should not be mixing my code with your code. And if you are using any of my code, use all of my code and none of yours.
I had to adjust the Turtle class code to accommodate the new world, so here is an updated Turtle class plus the revised Menu world:
// the adjusted Turtle class code
import greenfoot.*;
public class Turtle extends Actor
{
private int timer = 100;
public void act()
{
if(getWorld() instanceof Intro)
{
if(timer==0)
{
move(2);
if(getRotation()==0 && getX()>=355) timer = 136;
if(getRotation()==180 && getX()<=202) Greenfoot.setWorld(new Menu());
}
else
{
timer--;
if(getX()>=355 && timer<36) setRotation(getRotation()-5);
}
}
}
}
// the revised Menu class code with the turtle on the platform
import greenfoot.*;
import java.awt.Color;
public class Menu extends World
{
private int platformSize;
private Turtle turtle = new Turtle();
private GreenfootImage turtleImage;
public Menu()
{
super(600, 500, 1);
getBackground().setColor(Color.darkGray);
getBackground().fillOval(260, 211, 88, 82);
turtleImage = turtle.getImage();
addObject(turtle, 306, 252);
}
public void act()
{
if(platformSize<215)
{
platformSize++;
GreenfootImage platform = new GreenfootImage(2+2*platformSize/5, 2+2*platformSize/5);
platform.setColor(Color.lightGray);
platform.fillOval(0, 3, 2*platformSize/5, 2*platformSize/5-6);
getBackground().drawImage(platform, 304-platformSize/5, 252-platformSize/5);
GreenfootImage turtleImg = new GreenfootImage(turtleImage);
double factor = (double)(2+2*platformSize/5)/86;
turtleImg.scale((int)(factor*62), (int)(factor*46));
turtle.setImage(turtleImg);
}
}
}Thank you so much! I know I ask a lot questions, but that is how I learn the most, but is there a way to make it so you go into a world, then go to a different world, but then go back to the first world, but the world you went back to is different. I know this kind of confusing so I will explain what I am trying to do. I want to make it so every time you beat a level, you go back to the main menu but the next level is unlocked.
You can pass the MainMenu world object to each level as you create them, like
Then, in each level:
To return from an actor class (which is probably where you will determine when it is time to return), it would be best to super class all your level worlds with the same 'Level' world and put the mainMenu variable in that world. This way you know the name of the world that contains the variable and can simply code the following (without having to check all the level classes to see which class is currently active):
You will have to add the following method to the 'Level' world class code:
Greenfoot.setWorld(new Level1(this)); // from the world class, or Greenfoot.setWorld(new Level1((MainMenu)getWorld())); // from an actor class
// add this instance field
private MainMenu mainMenu;
// add a secondary constructor
public MainMenu(MainMenu world)
{
this(); // calls the main constructor
mainMenu = world; // saves the menu world
}
// to return to the saved MainMenu world
Greenfoot.setWorld(mainMenu); // from the world classGreenfoot.setWorld(((Level)getWorld()).getMenuWorld());
public MainMenu getMenuWorld()
{
return mainMenu;
}That is kinda confusing, so when I create level 1 and when I want to go back to the main menu I will try what you said. Do you think you could try explaining it again?
Line 5 in my last code post should read
Ask about explaining it again when you get to that.
public Level1(MainMenu world)
Ok. It might be a little while before I ask you to explain it again because I haven't thought about what to do for my game.... I am creating it as I go along....
@danpost, i have trouble. I made a game using a countdown timer using Edit> import class> counter, a maximum of 50 to 0, and if up to 0 game over. the problem is, time is running very fast, and I do not know how to slow down time as a matter of seconds. I need your help. thanks
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