BestFisherConstructionPositionFinder.java

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package jsettlers.ai.construction;

import java.util.ArrayList;
import java.util.List;

import jsettlers.ai.highlevel.AiStatistics;
import jsettlers.algorithms.construction.AbstractConstructionMarkableMap;
import jsettlers.common.buildings.EBuildingType;
import jsettlers.common.position.ShortPoint2D;

/**
 * Algorithm: find all possible construction points within the borders of the player - calculates a score based on the amount of fish
 * 
 * @author codingberlin
 */
public class BestFisherConstructionPositionFinder implements IBestConstructionPositionFinder {

	EBuildingType buildingType;

	public BestFisherConstructionPositionFinder(EBuildingType buildingType) {
		this.buildingType = buildingType;
	}

	@Override
	public ShortPoint2D findBestConstructionPosition(AiStatistics aiStatistics, AbstractConstructionMarkableMap constructionMap, byte playerId) {
		List<ScoredConstructionPosition> scoredConstructionPositions = new ArrayList<ScoredConstructionPosition>();

		int fishDistance = buildingType.getWorkRadius();
		for (ShortPoint2D point : aiStatistics.getLandForPlayer(playerId)) {
			if (aiStatistics.wasFishNearByAtGameStart(point) && constructionMap.canConstructAt(point.x, point.y, buildingType, playerId)
					&& !aiStatistics.blocksWorkingAreaOfOtherBuilding(point, playerId, buildingType)) {
				ShortPoint2D fishPosition = aiStatistics.getNearestFishPointForPlayer(point, playerId, fishDistance);
				if (fishPosition != null) {
					fishDistance = point.getOnGridDistTo(fishPosition);
					scoredConstructionPositions.add(new ScoredConstructionPosition(point, fishDistance));
				}
			}
		}

		return ScoredConstructionPosition.detectPositionWithLowestScore(scoredConstructionPositions);
	}
}