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## Package robocode.control

Control API used for controlling Robocode from an external application.

See:
Description

Interface Summary
RobocodeListener | A Listener interface for receiving callbacks from the `RobocodeEngine`.

Class Summary
BattlefieldSpecification | Defines the size of a battlefield.
BattleSpecification | A BattleSpecification defines the settings of a battle.
RobocodeEngine | The RobocodeEngine is meant for 3rd party applications to let them run battles in Robocode and receive the results.
RobotResults | Contains the battle results for an individual robot, which is given as input parameter with the `RobocodeListener.battleComplete(BattleSpecification, RobotResults[])` event handler.
RobotSpecification | Defines the properties of a robot, which is returned from `RobocodeEngine.getLocalRepository()`.

## Package robocode.control Description

Control API used for controlling Robocode from an external application.

## Example

Here is a simple application that runs a battle in Robocode for 5 rounds on the default battlefield of 800x600 pixels. The robots selected for the battle are sample.RamFire and sample.Corners.

    import robocode.control.*;

    /**
     * Application that runs two sample robots in Robocode.
     *
     * @author Flemming N. Larsen
     */
    public class RobocodeRunner {

        public static void main(String[] args) {

            // Listener that used for receiving battle events
            BattleListener battleListener = new BattleListener();

            // Instantiate Robocode with our battle listener
            RobocodeEngine engine = new RobocodeEngine(battleListener);

            // If application is not started from the Robocode home folder, the home folder
            // must be specified in order to locate the robot repository etc.
    //        RobocodeEngine engine = new RobocodeEngine(new java.io.File("C:/Robocode"), battleListener);

            // Show the battles
            engine.setVisible(true);

            // The robots selected for the battle
            final String[] ROBOTS = { "sample.RamFire", "sample.Corners" };

            // Robocode needs the robot specifications from the robot repository
            RobotSpecification[] selectedRobots = new RobotSpecification[ROBOTS.length];

            // Find the robot specifications we need for the battle

            // Go thru all robots in the robot repository and add the robot specification
            // to the list of selected robots if it is one of our selected robots
            int i = 0;
            for (RobotSpecification robotSpec : engine.getLocalRepository()) {
                String name = robotSpec.getClassName();
                for (String robot : ROBOTS) {
                    if (robot.equals(name)) {
                        selectedRobots[i++] = robotSpec;
                        break;
                    }
                }
            }

            // Setup the battle specifications

            // Run 5 battles
            final int NUM_ROUNDS = 5;
            // Use the default battlefield (800x600). Can be changed by specifying width and height
            // as input parameters
            final BattlefieldSpecification BATTLE_FIELD = new BattlefieldSpecification(); // default 800x600

            // Create the battle specification
            BattleSpecification battleSpec = new BattleSpecification(NUM_ROUNDS, BATTLE_FIELD, selectedRobots);

            // Run the battle based on our battle specification (5 rounds, 800x600, selected robots)
            engine.runBattle(battleSpec);

            // Wait for the battle to complete
            synchronized (battleListener) {
                while (!battleListener.battleComplete) {
                    try {
                        battleListener.wait();
                    } catch (InterruptedException e) {}
                }
            }

            // Close Robocode
            engine.close();

            // Make sure that the Java VM is shut down properly
            System.exit(0);
        }
    }

    /**
     * BattleListener which listens to battle events from Robocode.
     *
     * @author Flemming N. Larsen
     */
    class BattleListener implements RobocodeListener {

        // Flag specifying if the battle is complete
        boolean battleComplete;

        /**
         * Called when the battle is aborted.
         *
         * @param battleSpec the battle specification used for starting this battle
         */
        public void battleAborted(BattleSpecification battleSpec) {
            System.out.println("-- Battle was aborted --");

            // Notify that the battle is complete
            notifyBattleComplete();
        }

        /**
         * Called when the battle has completed.
         *
         * @param battleSpec the battle specification used for starting this battle
         * @param results the list of results for each robot
         */
        public void battleComplete(BattleSpecification battleSpec, RobotResults[] results) {
            System.out.println("-- Battle has completed --");

            // Notify that the battle is complete
            notifyBattleComplete();

            // Print out the results for each robot
            System.out.println("\n-- Battle results --");
            for (RobotResults result : results) {
                System.out.println("  " + result.getRobot().getName() + ": " + result.getScore());
            }
        }

        /**
         * Called when Robocode sends a message regarding the battle.
         *
         * @param message the message from Robocode
         */
        public void battleMessage(String message) {
            System.out.println(">" + message);
        }

        /**
         * Notify that the battle has been completed.
         */
        private synchronized void notifyBattleComplete() {
            // Set the flag that the battle is complete
            battleComplete = true;

            // Notify all that waits for the battle to complete
            notifyAll();
        }
    }

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