Four movement patterns in one sitting: sliding, move and rotate, steering, and gravity with a jump.
Before you start: finish lesson 3.8. 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.
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
move(int)
1.4
sliding
turn(int)
1.4
move and rotate
setLocation(getX(), getY() + speed)
1.4
gravity is just a y that keeps growing
private int speed
3.8
velocity has to be remembered between frames
if (Greenfoot.isKeyDown("space"))
2.7
jump
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
setRotation(int)
pointing an actor without moving it.
turnTowards(int x, int y)
steering toward a point.
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