[Ch6] GameHelper: Comments and some code organisation (f71a6a6f) · Commits · examples / Head First Java 3rd Edition

src/main/java/ch6/GameHelper.java

+18 −18

Changes for src/main/java/ch6/GameHelper.java: 18 added lines, 18 removed lines.
Original line number	Diff line number	Diff line
		@@ -38,17 +38,17 @@ public class GameHelper {
		int location = random.nextInt(GRID_SIZE); // get random starting point

		for (int i = 0; i < startupCoords.length; i++) { // create an array of proposed co-ordinates for the startup
		startupCoords[i] = location;
		startupCoords[i] = location; // put current location in the array
		location += alignment.getIncrement(); // calculate the next location
		}
		System.out.println("Trying: " + Arrays.toString(startupCoords));

		if (startupFits(startupCoords, alignment)) { // check the startup would fit on the grid
		success = coordsAvailable(startupCoords); // if it fits, check those locations aren't taken
		success = coordsAvailable(startupCoords); // if it fits, check those locations aren't already taken
		} // end loop
		} // end while

		savePositionToGrid(startupCoords);
		savePositionToGrid(startupCoords); // these coords passed everything, so update the grid with this startup
		ArrayList<String> alphaCells = convertCoordsToAlphaFormat(startupCoords);
		System.out.println(alphaCells);
		System.out.println(this);
		@@ -64,12 +64,14 @@ public class GameHelper {
		}
		}

		private ArrayList<String> convertCoordsToAlphaFormat(int[] startupCoords) {
		ArrayList<String> alphaCells = new ArrayList<String>();
		for (int index : startupCoords) { // for each grid coordinate
		alphaCells.add(getAlphaCoordsFromIndex(index)); // turn it into an "a0" style and add to a list
		boolean coordsAvailable(int[] startupCoords) {
		for (int coord : startupCoords) { // check all potential positions
		if (grid[coord] != 0) { // this co-ordinate already has an entry in the grid
		System.out.println("position: " + coord + " already taken.");
		return false; // NO success
		}
		return alphaCells;
		}
		return true; // if the method got this far, there were no clashes, yay!
		}

		void savePositionToGrid(int[] startupCoords) {
		@@ -78,6 +80,14 @@ public class GameHelper {
		}
		}

		private ArrayList<String> convertCoordsToAlphaFormat(int[] startupCoords) {
		ArrayList<String> alphaCells = new ArrayList<String>();
		for (int index : startupCoords) { // for each grid coordinate
		alphaCells.add(getAlphaCoordsFromIndex(index)); // turn it into an "a0" style and add to a list
		}
		return alphaCells;
		}

		String getAlphaCoordsFromIndex(int index) {
		int row = calculateRowFromIndex(index); // get row value
		int column = index % GRID_LENGTH; // get numeric column value
		@@ -86,16 +96,6 @@ public class GameHelper {
		return letter + row;
		}

		boolean coordsAvailable(int[] startupCoords) {
		for (int coord : startupCoords) { // check all potential positions
		if (grid[coord] != 0) { // this co-ordinate already has an entry in the grid
		System.out.println("position: " + coord + " already taken.");
		return false; // NO success
		}
		}
		return true; // if the method got this far, there were no clashes, yay!
		}

		private Alignment getAlignment() {
		if (startupCount % 2 == 0) { // if EVEN Startup
		return HORIZONTAL; // place horizontally