COMP 310	Command-dispatching Ballworld with Inter-ball Interactions

Note:  it is an Honor Code violation to attempt to decompile any supplied code

This examples demonstrates the capabilities of a command-dispatching architecture, especially in how it enables inter-ball communications and interactions.

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 both collide and interact:
  • Collide -- elastic collision behavior.  Uses nudging for rebound positioning.
  • CollideExact -- elastic collision behavior.  Uses exact calculations for rebound positioning.
  • Spawn -- adds an identical ball whenever it overlaps with another ball.
  • HitFlash -- flashes red color when overlaps with another ball.
  • Infect -- a black-colored ball that will turn any other ball it overlaps with into an Infect ball for its first 50 updates.   After that, the ball becomes a normal Straight ball.
• 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.
• Strategies that only install interaction strategies and thus at least be combined with a strategy that detects an interaction, e.g. Overlap or Collide.
  • Kill -- deletes other when it collides. 
  • Eat -- kills whomever the ball collides with and increases its area by the killed ball's area. 
  • Collide2 -- elastic collision implemented purely as an interaction strategy.   Combine with Overlap to see bouncing balls.

The following paint strategies are available for use:

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

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?

Click here to download and launch the demo.   Please accept any security requests.

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© 2017 by Stephen Wong