Command-dispatching Ballworld with Inter-ball Interactions and Algorithm-based Ball Configuring

COMP 310 Java Resources Eclipse Resources

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This examples demonstrates the capabilities of a command-dispatching architecture, especially in how it enables inter-ball communications and interactions plus adds the ability to use algorithm-based ball configuring. This enables the ball creation and behavior composing mechanism to be shared between different types of strategies.

IMPORTANT: A configuration algorithm for a paint strategy must ALWAYS be included in the selected configuration algorithm when creating a new ball or when switching to a new configuration!

The following different types of strategies are available for use:

Straight
Curve
Color
Breathing
Wander
Drunken
Change1
Change2
Friction -- slows the ball down by 20% each update.
Strategies that just detect an interaction and invoke the interaction strategies of the interacting balls.
- Overlap -- Detects if the ball overlaps with any other balls.
- Overlap2 -- Does an exact calculation of whether two balls have ever overlapped within the last time tick.
- Laser -- Detects if another ball intersects the context ball's velocity vector

The following paint strategies are available for use:

Ball
Square
Rectangle
Ellipse
Fish1
Fish2
SwimFish
NiceFish
SoccerImage
PlanetImage
SharkImage
BirdSheepImage
MarioSonicImage

The following interaction strategies are available for use:

ExactBounce -- bounces off the other ball using an exact calculation of a two-body elastic collision
Eat -- increases its area by the other ball's area
Kill -- deletes other when it collides.

Questions: What happens when you make balls that have an interaction strategy but no interaction detection? What happens when you add a ball that does have interaction detection?

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