schemademo.java

TeamBots 是一个可移植的多代理机器人仿真器

/*
 * SchemaDemo.java
 */

import	EDU.gatech.cc.is.util.Vec2;
import	EDU.gatech.cc.is.abstractrobot.*;
import	EDU.gatech.cc.is.clay.*;

/**
 * This is an example of a simple control system for soccer robots
 * designed using Clay.
 * The strategy is to get behind the ball, then move to it, while
 * keeping away from teammates.
 * One of the robots remains near the goal to act as a goalie.
 * <P>
 * For detailed information on how to configure behaviors, see the
 * <A HREF="../../EDU/gatech/cc/is/clay/docs/index.html">Clay page</A>.  
 * <P>
 * <A HREF="../../EDU/gatech/cc/is/COPYRIGHT.html">Copyright</A>
 * (c)1997, 1998 Tucker Balch
 *
 * @author Tucker Balch
 * @version $Revision: 1.1 $
 */

public class SchemaDemo extends ControlSystemSS
	{
	public final static boolean DEBUG = false;
	private NodeVec2	steering_configuration;
	private NodeBoolean	kick_configuration;
	private NodeInt		state_monitor;

	/**
	 * Configure the SchemaDemo control system using Clay.
	 */
	public void configure()
		{
		if (DEBUG) System.out.println("SchemaDemo.Configure()");
		abstract_robot.setObstacleMaxRange(3.0);
		
		//======
		//Perceptual schemas
		//======
		// the teammates sensed by the robot
		NodeVec2Array 
		PS_TEAMMATES = new va_Teammates_r(abstract_robot);

		// the opponents sensed by the robot
		NodeVec2Array 
		PS_OPPONENTS = new va_Opponents_r(abstract_robot);

		// the ball
		NodeVec2
		PS_BALL = new v_Ball_r(abstract_robot);

		// good place to kick from
		NodeVec2
		PS_SWEET_SPOT = new v_SweetSpot_r(abstract_robot);

		// our goal
		NodeVec2
		PS_OUR_GOAL = new v_OurGoal_r(abstract_robot);

		// their goal
		NodeVec2
		PS_THEIR_GOAL = new v_TheirGoal_r(abstract_robot);

		// point halfway between ball and goal
		NodeVec2
		PS_HALFWAY = new v_Average_vv(PS_OUR_GOAL,PS_BALL);


		//======
		// PERCEPTUAL FEATURES
		//======
		// tells us if we are behind the ball or not
		NodeBoolean
		PF_BEHIND_BALL = new b_BehindBall_r(abstract_robot);

		// tells us if we can kick the ball or not
		NodeBoolean
		PF_CAN_KICK    = new b_CanKick_r(abstract_robot);

	
		//======
		// PERCEPTUAL STATE
		//======
		// builds a state from bits
		i_Merge_ba
		STATE = new i_Merge_ba();
		STATE.embedded[0] = PF_BEHIND_BALL;

		state_monitor = STATE;
		

		//======
		// MOTOR SCHEMAS
		//======
		// a motor schema to avoid our teammates
		NodeVec2 
		MS_AVOID_TEAMMATES 
			= new v_Avoid_va(1.0, abstract_robot.RADIUS+0.1, 
				PS_TEAMMATES);

		// a motor schema to avoid opponents
		NodeVec2 
		MS_AVOID_OPPONENTS 
			= new v_Avoid_va(0.2, abstract_robot.RADIUS-0.01, 
				PS_OPPONENTS);

		// a motor schema to go to the ball
		NodeVec2 
		MS_MOVE_TO_BALL
			= new v_LinearAttraction_v(0.0, 0.0, PS_BALL);

		// a motor schema to go to the sweetspot
		NodeVec2 
		MS_MOVE_TO_SWEET_SPOT
			= new v_LinearAttraction_v(0.0, 0.0, PS_SWEET_SPOT);

		// a motor schema to go to halfway
		NodeVec2 
		MS_MOVE_TO_HALFWAY
			= new v_LinearAttraction_v(0.0, 0.0, PS_HALFWAY);

		// swirl around the ball
		NodeVec2 
		MS_SWIRL_BALL
			= new v_Swirl_vv(0.5, 0.0, PS_BALL, PS_HALFWAY);

                // a motor schema to go to the goal area
                NodeVec2 
                MS_MOVE_TO_BACK
                        = new v_LinearAttraction_v(0.3, 0.2, PS_OUR_GOAL);


		//======
		// MOVE TO BALL ASSEMBLAGE
		//======
		v_StaticWeightedSum_va 
		AS_MOVE_TO_BALL = new v_StaticWeightedSum_va();

		AS_MOVE_TO_BALL.weights[0]  = 0.8;
		AS_MOVE_TO_BALL.embedded[0] = MS_AVOID_TEAMMATES;
		
		AS_MOVE_TO_BALL.weights[1]  = 1.0;
		AS_MOVE_TO_BALL.embedded[1] = MS_MOVE_TO_SWEET_SPOT;


		//======
		// GET BEHIND BALL ASSEMBLAGE
		//======
		v_StaticWeightedSum_va AS_GET_BEHIND_BALL = 
			new v_StaticWeightedSum_va();
		AS_GET_BEHIND_BALL.weights[0]  = 0.8;
		AS_GET_BEHIND_BALL.embedded[0] = MS_AVOID_TEAMMATES;

		AS_GET_BEHIND_BALL.weights[1]  = 1.2;
		AS_GET_BEHIND_BALL.embedded[1] = MS_SWIRL_BALL;
		
		AS_GET_BEHIND_BALL.weights[2]  = 1.0;
		AS_GET_BEHIND_BALL.embedded[2] = MS_MOVE_TO_HALFWAY;


                //======
                // MOVE TO BACKFIELD
                //======
                v_StaticWeightedSum_va AS_MOVE_TO_BACKFIELD = 
                        new v_StaticWeightedSum_va();

                AS_MOVE_TO_BACKFIELD.weights[0]  = 1.0;
                AS_MOVE_TO_BACKFIELD.embedded[0] = MS_MOVE_TO_BALL;
                
                AS_MOVE_TO_BACKFIELD.weights[1]  = 1.2;
                AS_MOVE_TO_BACKFIELD.embedded[1] = MS_MOVE_TO_BACK;
   
		
		//======
		// SPECIFY CONFIGURATIONS
		//======
		// define the steering configuration
		v_Select_vai 
		STEERING = new v_Select_vai(STATE);

		if (abstract_robot.getPlayerNumber(-1) == 0)
			{
			// GOALIE
			STEERING.embedded[0] = AS_GET_BEHIND_BALL;
			STEERING.embedded[1] = AS_MOVE_TO_BACKFIELD;
			}
		else
			{
			// FORWARD
			STEERING.embedded[0] = AS_GET_BEHIND_BALL;
			STEERING.embedded[1] = AS_MOVE_TO_BALL;
			}
	
		steering_configuration = STEERING;

		kick_configuration = PF_CAN_KICK;
		}
		
	
	/**
	Called every timestep to allow the control system to
	run.
	*/
	public int takeStep()
		{
		Vec2	result;
		boolean	kick_result;
		long	curr_time = abstract_robot.getTime();

		// Get the decisions from the configurations
		if (steering_configuration == null)
			System.out.println("it is null");
		result = steering_configuration.Value(curr_time);
		if (result.r > 1.0)
			result.setr(1.0);
		kick_result = kick_configuration.Value(curr_time);

		// Send them to the robot
		abstract_robot.setSteerHeading(curr_time, result.t);
		abstract_robot.setSpeed(curr_time, result.r);
		if (kick_result) abstract_robot.kick(curr_time);
		
		// Display the action for the user
                int state = state_monitor.Value(curr_time);
                String msg = "blank";
                if (state == 0)
                        msg = "get behind ball";
                else if ((state == 1) && 
			(abstract_robot.getPlayerNumber(-1) == 0))
                        msg = "move to backfield";
                else if ((state == 1) && 
			(abstract_robot.getPlayerNumber(-1) != 0))
                        msg = "move to ball";
                abstract_robot.setDisplayString(msg);

		// Check for scoring event
		if (abstract_robot.getJustScored(curr_time) != 0)
			{
			System.out.println("score: " 
				+ abstract_robot.getJustScored(curr_time));
			}

		// Tell parent we're OK
		return(CSSTAT_OK);
		}
	}