Changing Worlds: a Greenfoot project

Changing Worlds

Greenfoot project 6 · all projects · part of Intro to Java with Greenfoot · not graded, and not tracked as progress

Moving between worlds on a collision while carrying the player data across.

Before you start: finish lesson 4.4. That is the last thing this project needs. Starting earlier is allowed and you will hit a method nobody has shown you yet.

Tutorial. Put this window on one side of your screen and Greenfoot on the other, then build along with it.

Get the starter files

Methods you will use

Every one of these appears in the build. The lesson number is where the course teaches it, so if a row looks unfamiliar you have not missed anything, you just have not got there yet.

Method Taught in What it does here
if (isTouching(Target.class)) 4.4 the player reaches the door
removeTouching(Target.class) 4.4 stop it firing twice
public NextWorld(int score) 3.6 carry the score across, optional but the interesting part
this.score = score 3.8 store what was handed in
Greenfoot.playSound("whoosh.wav") 2.6 a transition that feels like one

Not covered by the course

This project uses these, and the lessons never get to them. That is not a gap in your knowledge. Copy them from the video, or ask.

Method Why it is here
Greenfoot.setWorld(new NextWorld()) switching worlds. This is the whole project and the course never teaches it.

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