Unit.ajva

package byow.Core;
import byow.TileEngine.TETile;
import byow.TileEngine.Tileset;
import java.util.ArrayList;
import java.util.List;

public class Unit {
    private Position botPos;
    private int width;
    private int height;
    private List<Position> connections;

    public Unit(Position botPos, int width, int height) {
        this.botPos = botPos;
        this.width= width;
        this.height = height;
        this.connections = new ArrayList<>();
    }

    public int getX() {
        return botPos.getX();
    }
    public int getY() {
        return botPos.getY();
    }
    public int getWidth() {
        return width;
    }
    public int getHeight() {
        return height;
    }

    /**
     * @source [https://www.geeksforgeeks.org/find-two-rectangles-overlap/]
     **/
    public boolean overlap(Unit other) {
        Position l1 = botPos.add(0, height-1);
        Position r1 = botPos.add(width-1, 0);
        Position l2 = other.botPos.add(0, other.height - 1);
        Position r2 = other.botPos.add(other.width - 1, 0);

        if (l1.getX() == r1.getX() || l1.getY() == r1.getY() || r2.getX() == l2.getX() || l2.getY() == r2.getY()) {
            return false;
        }
        if (l1.getX() > r2.getX() || l2.getX() > r1.getX()) {
            return false;
        }
        if (r1.getY() > l2.getY() || r2.getY() > l1.getY()) {
            return false;
        }
        return true;
    }

    public boolean isValid(TETile[][] worldFrame) {
        Position topRightPos = botPos.add(width-1, height-1);
        return isValid(botPos, worldFrame) && isValid(topRightPos, worldFrame);
    }

    private boolean isValid(Position pos, TETile[][] worldFrame) {
        return pos.getX()>=0 && pos.getX()<worldFrame.length &&
                pos.getY()>=0 && pos.getY()<worldFrame[0].length;
    }

    public void addConnection(Position p) {
        connections.add(p);
    }

    public void draw(TETile[][] worldFrame) {
        int botLeftX = botPos.getX();
        int botLeftY = botPos.getY();

        for (int i = botLeftX; i < botLeftX + width; i++) {
            for (int j = botLeftY; j < botLeftY + height; j++) {
                if (!connections.contains(new Position(i, j))) {
                    worldFrame[i][j] = Tileset.WALL;
                }
                else {
                    worldFrame[i][j] = Tileset.FLOOR;
                }
            }
        }
        for(int i = botLeftX+1; i < botLeftX + width - 1; i++) {
            for (int j = botLeftY+1; j < botLeftY + height - 1; j++) {
                worldFrame[i][j] = Tileset.FLOOR;
            }
        }
    }
}