State Machine Presentation62 End

Thursday, March 18, 2010




public class Creature{ private var amIdead : Boolean; private var doIHaveDelbruckBrain : Boolean; private var doIHaveVictorBrain : Boolean;

public function Creature() { trace(“Ecce Creature”); amIdead = true;

}

public function implant( b : Brain ) { mybrain = b; if( mybrain == DELBRUCK_BRAIN ) // how?? { doIHaveDelbruckBrain = true; doIHaveVictorBrain = false; } else if( mybrain == VICTOR_BRAIN )// again -- how?? { doIHaveDelbruckBrain = false; doIHaveVictorBrain = true; } else { doIHaveDelbruckBrain = false; doIHaveVictorBrain = false; } }

public function zap() { if( amIdead ) { amIdead = false;

} else

{ amIdead = false;

}}

public function talk() { if( amIdead ) { // DO NOTHING -- I’M DEAD

} else

{ if( doIHaveDelbruckBrain ) {

trace(“Listen to this...”); trace(“the secrets of eternity”); } else if( doIHaveVictorBrain ) { trace(“The operation...”); trace(“...did it work?”); } else { trace(“UNNNNNNNH”); }




}



} else

{ amIdead = false;

}}


} else






}



} else

{ amIdead = false;

}}


} else






}



} else

{ amIdead = false;

}}


} else






}



} else

{ amIdead = false;

}}


} else





public class Creature{ private var mybrain : Brain;

public function Creature() { trace(“Ecce Creature”); }

public function zap() {}

public function walk() {}

public function talk() {} }



public function Creature() { trace(“Ecce Creature”); }

public function zap() {}

public function walk() {}

public function talk() {} }


public class Brain{

public function zap(){}

public function talk(){}

public function walk(){}

}


public class DeadDelbruckBrain extends Brain{




}



public function Creature() { trace(“Ecce Creature”); this.implant( new DeadDelbruckBrain()); }

public function zap() { mybrain.zap();

}

public function walk() { mybrain.walk();

} public function talk() { mybrain.talk();

} }



public function Creature() { trace(“Ecce Creature”); this.implant( new DeadDelbruckBrain()); }


}



} }


public class Creature{ private var deadDelbruckBrain : DeadDelbruckBrain;

private var livingDelbruckBrain : LivingDelbruckBrain;

public function Creature(){ trace(“Ecce Creature”);

deadDelbruckBrain = new DeadDelbrookBrain(); livingDelbruckBrain = new LivingDelbrookBrain();

this.implant( deadDelbruckBrain );}


}



} }


public class Creature{ private var deadDelbruckBrain : DeadDelbruckBrain;

private var livingDelbruckBrain : LivingDelbruckBrain;





}



} }


public class DeadDelbruckBrain extends Brain{

public function zap() {

mycreature.implant( mycreature.livingDelbruckBrain );

}


public class Creature{ public var deadDelbruckBrain : DeadDelbruckBrain;

public var livingDelbruckBrain : LivingDelbruckBrain;





}



} }


public class Creature{ public var deadDelbruckBrain : DeadDelbruckBrain;

public var livingDelbruckBrain : LivingDelbruckBrain;


deadDelbruckBrain = new DeadDelbrookBrain( this ); livingDelbruckBrain = new LivingDelbrookBrain( this );



}



}


public class Brain{

public var mycreature : Creature;

public function Brain( somecreature : Creature ) { mycreature = somecreature; }


...


mycreature.implant( mycreature.livingDelbruckBrain );

}...


public class DeadAbnormalBrain extends Brain{




}


public class LivingAbnormalBrain extends Brain{




}


...


mycreature.implant( mycreature.livingAbnormalBrain );

}...


...

public function eatSoup() {

...}

...



...

public function smokeCigar() {

...}

...



...

public function sing() {

...}

...



public class HybridVictorAndAbnormalBrain extends Brain{

...

}



private var percentageVictor : int;

public function setVictorPercentage( p : int ){ percentageVictor = p;}



...

public function talk( ){ if( percentageVictor > 50 ) {...



Template Method Pattern


public class Brain{... public function walk() {

stepWithLeftFoot();stepWithRightFoot();

}...}


public class Brain{... public function stepWithLeftFoot() {

}

public function stepWithRightFoot() {

}...}


public class OneLeggedBrain{... override public function walk() {

//stepWithLeftFoot();stepWithRightFoot();

}...}


public class RogerCobbBrain extends Brain{... override public function stepWithLeftFoot() {

leftFootPosition += strideLength; }

override public function stepWithRightFoot() {

rightFootPosition += strideLength; }...}


public class EdwinaBrain extends Brain{... override public function stepWithLeftFoot() {

leftFootPosition += strideLength; }


rightFootPosition += strideLength; }...}


public class EdwinaBrain extends Brain{... override public function stepWithLeftFoot() {

leftFootPosition += strideLength * 2; }


rightFootPosition += strideLength * 2; }...}


public class EdwinaBrain extends Brain{... public function EdwinaBrain() {

strideLength = 12;rightStrideLength = 24;

}


rightFootPosition += rightStrideLength; }...}


public class TwoBrainedCreature{... public var rightBrain : RightBrain; public var leftBrain : LeftBrain;...}



Many brainsin one creature.


public class TwoBrainedCreature{... public function walk() {

rightBrain.stepWithLeftFoot();leftBrain.stepWithRightFoot();

}...}



One kind of brain,many kinds of creatures.


public class World{public function World(){ var neo : Hero = new Hero(); var shopper : NormalPerson = new NormalPerson();

var agentOne = new SmithBrain(); var agentTwo = new SmithBrain(); neo.implant( agentOne ); shopper.implant( agentTwo );

}}



One actual brain,many creatures.



public class World{public function World(){

agentSmithBrain = new AgentSmithBrain(); var neo : Creature = new Creature(); var shopper : Creature = new Creature();

neo.implant( agentSmithBrain ); shopper.implant( agentSmithBrain );

}}


Dependency Injection



<beans> <bean id="edwina" class="EdwinaBrain"> <property name="mycreature" ref=" creature"/> </bean> <bean id="roger" class="RogerCobbBrain"> <property name="mycreature" ref=" creature"/> </bean> <bean id="creature" class="Creature"> <property name="leftBrain" ref="edwina"/> <property name="rightBrain" ref="roger"/> </bean></beans>


Actual Example


<game> <level name="demomode" > <sprite id="bigboss" class="FlyingDragon"> <property name="target" ref="hero"/> <property name="inputBrain" class="HeroFollower"/> <property name="movementBrain" class="ClumsyFlying"/> </sprite> <sprite id="hero" class="UnarmedHero"> <property name="inputSource" class="KeyboardInput"/> </sprite> </level></game>


<game> <level name="demomode" > <sprite id="bigboss" class="FlyingDragon"> <property name="target" ref="hero"/> <property name="inputBrain" class="HeroFollower"/> <property name="movementBrain" class="ClumsyFlying"/> </sprite> <sprite id="hero" class="UnarmedHero"> <property name="inputSource" class="RecordingKeyboardInput"/> </sprite> </level></game>


<game> <level name="demomode" > <sprite id="bigboss" class="FlyingDragon"> <property name="target" ref="hero"/> <property name="inputBrain" class="HeroFollower"/> <property name="movementBrain" class="ClumsyFlying"/> </sprite> <sprite id="hero" class="UnarmedHero"> <property name="inputSource" class="RecordedKeyboardInput" /> <property name="inputSource" class= "RecordedInputTranslator" data="a7.b3.c22.a42" /> </sprite> </level>


One Word:



Brains.


Documents

State Machine Presentation62 End