BestMineConstructionPositionFinder.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.landscape.EResourceType;
import jsettlers.common.position.RelativePoint;
import jsettlers.common.position.ShortPoint2D;
import jsettlers.logic.map.grid.landscape.LandscapeGrid;

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

	EBuildingType buildingType;
	EResourceType resourceType;

	public BestMineConstructionPositionFinder(EBuildingType buildingType, EResourceType resourceType) {
		this.buildingType = buildingType;
		this.resourceType = resourceType;
	}

	@Override
	public ShortPoint2D findBestConstructionPosition(AiStatistics aiStatistics, AbstractConstructionMarkableMap constructionMap, byte playerId) {
		List<ScoredConstructionPosition> scoredConstructionPositions = new ArrayList<ScoredConstructionPosition>();
		for (ShortPoint2D point : aiStatistics.getLandForPlayer(playerId)) {
			if (constructionMap.canConstructAt(point.x, point.y, buildingType, playerId)) {
				int resourceAmount = 0;
				LandscapeGrid landscapeGrid = aiStatistics.getMainGrid().getLandscapeGrid();
				for (RelativePoint relativePoint : buildingType.getBlockedTiles()) {
					int x = point.x + relativePoint.getDx();
					int y = point.y + relativePoint.getDy();
					if (landscapeGrid.getResourceTypeAt(x, y) == resourceType) {
						resourceAmount -= landscapeGrid.getResourceAmountAt(x, y);
					}
				}
				if (resourceAmount != 0) {
					scoredConstructionPositions.add(new ScoredConstructionPosition(point, resourceAmount));
				}
			}
		}

		return ScoredConstructionPosition.detectPositionWithLowestScore(scoredConstructionPositions);
	}

}