Chapter1

import java.util.Scanner;
import java.util.concurrent.SynchronousQueue;

/**
 * Created by nrager on 02/02/16.
 */
public class Chapter1 {

  public static void main(String[] args) {

    // Declarations
    InputHandler input = new InputHandler();
    TiledMap1 map = new TiledMap1(input);

  }

}

class TiledMap1 {

  // Declarations
  InputHandler input;
  MapRender mapRender;
  private boolean[][] map;
  private int WIDTH, HEIGHT, GAPSIZE, HEDGEWIDTH;
  private double passableAreaPercentage;
  private int defaultWIDTH      = 20;
  private int defaultHEIGHT     = 15;
  private int defaultGAPSIZE    = 5;
  private int defaultHEDGEWIDTH = 1;

  public TiledMap1(InputHandler input) {
    this.input = input;

    // Prompt for sizes
    this.promptSize();
    this.map = new boolean[this.WIDTH][this.HEIGHT];
    this.generateMapContent();
    this.calculatePassableArea();

    mapRender = new MapRender(this.map, this.WIDTH, this.HEIGHT, this.passableAreaPercentage);
    mapRender.render();
  }

  private void calculatePassableArea() {
    double countPassableArea = 0;
    double totalArea = this.WIDTH * this.HEIGHT;

    for (int i = 0; i < this.WIDTH; i++) {
      for (int j = 0; j < this.HEIGHT; j++) {
        if(this.map[i][j] == true) {
          countPassableArea++; // Only count if a tile is passable.
        }
      }
    }

    this.passableAreaPercentage = (countPassableArea / totalArea) * 100;

  }

  private void generateMapContent() {
    int centre = (this.HEIGHT/2);
    for (int i = 0; i < this.WIDTH; i++) {
      for (int j = 0; j < this.HEIGHT; j++) {
        if((j >= centre - (this.GAPSIZE/2) && j < (centre - (this.GAPSIZE/2))+this.GAPSIZE && i >= this.WIDTH-this.HEDGEWIDTH)) {
          // Within hedge gap boundary. Set to true.
          this.map[i][j] = true;
        } else if (j < this.HEDGEWIDTH || ((this.HEIGHT - 1) - j) < this.HEDGEWIDTH) {
          // Currently on either top or bottom on the y-axis, within range of hedge boundary. Set to false.
          this.map[i][j] = false;
        } else if (i < this.HEDGEWIDTH || ((this.WIDTH - 1) - i) < this.HEDGEWIDTH) {
          // Currently on either side on the x-axis, within the hedge boundary. Set to false.
          this.map[i][j] = false;
        } else {
          // Not currently in a hedge area. Set to true.
          this.map[i][j] = true;
        }
      }
    }
  }

  private void promptSize() {

    // Prompt and get sizes, or set to default.
    // Width
    int temp = this.input.getInput("Please input width of map: ");
    if(temp > 0) {
      // Set width to input.
      this.WIDTH = temp;
    } else {
      // Set to default.
      this.WIDTH = this.defaultWIDTH;
    }
    // Height
    temp = this.input.getInput("Please input height of map: ");
    if(temp > 0) {
      // Set height to input.
      this.HEIGHT = temp;
    } else {
      // Set to default.
      this.HEIGHT = this.defaultHEIGHT;
    }
    // Gapsize
    temp = this.input.getInput("Please input width of gap: ");
    if(temp > 0) {
      // Set GAPSIZE to input.
      this.GAPSIZE = temp;
    } else {
      // Set to default.
      this.GAPSIZE = this.defaultGAPSIZE;
    }
    // HedgeWidth
    temp = this.input.getInput("Please input width of Hedge: ");
    if(temp > 0) {
      // Set hedgewidth to input.
      this.HEDGEWIDTH = temp;
    } else {
      // Set to default.
      this.HEDGEWIDTH = this.defaultHEDGEWIDTH;
    }

  }

}

class InputHandler {

  // Declarations of variables and objects
  Scanner sc = new Scanner(System.in);

  public InputHandler() {
    // Empty for now
  }

  /**
   * getInput method returns the input in response to the provided prompt.
   * @param message Message to prompt the user.
   * @return Returns int value of input.
   */
  public int getInput(String message) {
    int INPUT; // Declare variable to hold input
    System.out.print(message); // Print the message taken
    INPUT = sc.nextInt(); // Store the input
    System.out.println(); // Set console to new line
    return INPUT; // Return the input to calling method.
  }
}

class MapRender {

  // Declarations
  boolean[][] map;
  int width, height;
  double passableArea;

  public MapRender(boolean[][] inputMap, int width, int height, double passableArea) {
    this.map = inputMap;
    this.width = width;
    this.height = height;
    this.passableArea = passableArea;
  }

  public void render() {
    System.out.println("Passable Area: " + this.passableArea + "%"); // Print passable area percentage

    // Print map
    for (int i = 0; i < this.width; i++) {
      for (int j = 0; j < this.height; j++) {
        // If passable, print . for grass and H for hedge.
        if(this.map[i][j] == true) {
         System.out.print('.');
        } else {
          System.out.print('H');
        }

      }
      // New line
      System.out.println();
    }


  }











}