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GameHelper.java
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82 lines (72 loc) · 2.87 KB
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import java.io.*;
import java.util.*;
public class GameHelper {
private static final String alphabet = "abcdefg";
private int gridLength = 7;
private int gridSize = 49;
private int[] grid = new int[gridSize];
private int comCount = 0;
public String getUserInput(String prompt) {
String inputLine = null;
System.out.print(prompt + " ");
try {
BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
inputLine = is.readLine();
if (inputLine.length() == 0) return null;
} catch (IOException e) {
System.out.println("IOException: " + e);
}
return inputLine.toLowerCase();
}
public ArrayList<String> placeDotCom(int comSize) {
ArrayList<String> alphaCells = new ArrayList<>();
String[] alphacoords = new String[comSize]; // holds 'f6' type coords
String temp = null; // temporary String for concat
int[] coords = new int[comSize]; // current candidate coords
int attempts = 0; // current attempts counter
boolean success = false; // flag = found a good location ?
int location = 0; // current starting location
comCount++; // nth dot com to place
int incr = 1; // set horizontal increment
if ((comCount % 2) == 1) { // if odd dot com (place vertically)
incr = gridLength; // set vertical increment
}
while (!success & attempts++ < 200) { // main search loop (32)
location = (int) (Math.random() * gridSize); // get random starting point
//System.out.print(" try " + location);
int x = 0; // nth position in dot com to place
success = true; // assume success
while (success && x < comSize) { // look for adjacent unused spots
if (grid[location] == 0) { // if not already used
coords[x++] = location; // save location
location += incr; // try 'next' adjacent
if (location >= gridSize) { // out of bounds - 'bottom'
success = false; // failure
}
if (x > 0 & (location % gridLength == 0)) { // out of bounds - right edge
success = false; // failure
}
} else { // found already used location
//System.out.print(" used " + location);
success = false; // failure
}
}
}
int x = 0; // turn location into alpha coords
int row = 0;
int column = 0;
//System.out.println("\n");
while (x < comSize) {
grid[coords[x]] = 1; // mark master grid pts. as 'used'
row = (int) (coords[x] / gridLength); // get row value
column = coords[x] % gridLength; // get numeric column value
temp = String.valueOf(alphabet.charAt(column)); // convert to alpha
alphaCells.add(temp.concat(Integer.toString(row)));
x++;
// This is the statement that tells you exactly where the DotCom is located:
// System.out.print(" coord " + x + " = " + alphaCells.get(x - 1));
}
//System.out.println("\n");
return alphaCells;
}
}