The Counter Pattern

What is the animation

name?

What is the animation

name?

blue

What is the animation

name?

How many frames?

blue

What is the animation

name?

How many frames?

blue

2

What is Animation’s

name?

What is Animation’s

name?blue

What is the Sprite’s name?What is

Animation’s name?

blue

What is the Sprite’s name?What is

Animation’s name?

bluefish

What code links the sprite to an

animation?

What code links the sprite to an

animation?.setAnimation

What is the initial

position?What code links the sprite to an

animation?.setAnimation

What is the initial

position?What code links the sprite to an

animation?.setAnimation

300, 200

Set up sprites

Steps to repeat

Set up sprites

1. Initialize loop stopping variables

1. Initialize loop stopping variables

2. Test loop stopping condition

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

4. Progress to the loop stopping condition.

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

4. Progress to the loop stopping condition.

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

4. Progress to the loop stopping condition.

Was Pressed?

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

4. Progress to the loop stopping condition.

Was Pressed?

1. Initialize loop stopping variables

2. Test loop stopping condition

3. Steps to repeat

4. Progress to the loop stopping condition.

Was Pressed?

The Counter Pattern

The Counter Pattern

1. Take the current value of fish.x

The Counter Pattern

1. Take the current value of fish.x

2. Add 1

The Counter Pattern

1. Take the current value of fish.x

2. Add 13. Store it back

in fish.x

The Counter Pattern

1. Take the current value of fish.x

2. Add 13. Store it back

in fish.x

Makes the variable increase by 1.

The Counter Pattern

1. Take the current value of fish.x

2. Add 13. Store it back

in fish.x

Makes the variable increase by 1.

(0,0)

(0,400) (400,400)

(400,0)

(0,0)

(0,400) (400,400)

(400,0)

(0,0)

(0,400) (400,400)

(400,0)

These two lines mean the same

thing.

RightX Pos

LeftX Neg

UpY Neg

DownY Pos

(0,0)

(400,400)

x

y

The Car’s Initial Direction

The Car’s Initial Direction

The Car’s Initial Direction

Hit

Hit

Bounce off

Hit

Hit

Bounce off

Hit

Bo

un

ce o

ff

Hit

Bo

un

ce off