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Closely Examining the East Code
It’s customary in Western languages to write from left to right, so the code for E, which indicates write towards the East, is probably the most natural to understand. I explain how that code works and then show you how the other directions differ.
Here’s the code fragment that attempts to write a word in the Easterly direction:
Here’s the code fragment that attempts to write a word in the Easterly direction:
case "E":
//col from 0 to board width - word width
//row from 0 to board height
$newCol = rand(0, $boardData["width"] - 1 - strlen($theWord));
$newRow = rand(0, $boardData["height"]-1);
for ($i = 0; $i < strlen($theWord); $i++){
//new character same row, initial column + $i
$boardLetter = $board[$newRow][$newCol + $i];
$wordLetter = substr($theWord, $i, 1);
//check for legal values in current space on board
if (($boardLetter == $wordLetter) ||
($boardLetter == ".")){
$board[$newRow][$newCol + $i] = $wordLetter;
} else {
$itWorked = FALSE;
} // end if
} // end for loop
break;
//col from 0 to board width - word width
//row from 0 to board height
$newCol = rand(0, $boardData["width"] - 1 - strlen($theWord));
$newRow = rand(0, $boardData["height"]-1);
for ($i = 0; $i < strlen($theWord); $i++){
//new character same row, initial column + $i
$boardLetter = $board[$newRow][$newCol + $i];
$wordLetter = substr($theWord, $i, 1);
//check for legal values in current space on board
if (($boardLetter == $wordLetter) ||
($boardLetter == ".")){
$board[$newRow][$newCol + $i] = $wordLetter;
} else {
$itWorked = FALSE;
} // end if
} // end for loop
break;