Creating the Dice Battle Puzzle Game - The Essential Guide to Flash Games - page 399

Value:20 Row:3 Col:2
Value:24 Row:4 Col:4
Finally, we remove any moves that are below the minValue set for the level (but only if it leaves one
move to make at the end). For this level (level 3), the currentLevel.minValue is 7 . This means that
the computer will always choose a move that scores 7 or more (if one exists. With the values under
currentLevel.minValue removed, we are left with four moves for the computer to choose from:
if (dieSets[dieSets.length-1][0] > currentLevel.minValue) {
for (ii = dieSets.length-1; ii >= 0; ii--) {
if (dieSets[ii][0] < currentLevel.minValue) {
dieSets.splice(ii,1);
}
}
}
Here is the traced output of dieSets array after we have removed all the values below minValue
(with labels added to each value for illustration):
minValue removed Moves:4
Value:8 Row:2 Col:3
Value:10 Row:3 Col:3
Value:20 Row:3 Col:2
Value:24 Row:4 Col:4
Now we get a random value from 0-99. In this case, it is 28. We test to see if (dieSets > 1) ,
because we don't need to figure out which move to make if there is only one.
var aiVal:Number = 0;
if (dieSets.length > 1) {
var pChance:Number = Math.floor(Math.random() * 100);
Here is the traced output of pChance (with a label added for illustration):
pChance without aiBonus:28
We now add the aiBonus for this level to that value. The higher the number, the better move the
computer will make. The aiBonus for level 3 is 20 so we add that to pChance to make 48 .
pChance += currentLevel.aiBonus;
Here is the traced output pChance with aiBonus added (with a label added for illustration):
pChance with AIbonus:48
Now, we simply divide 99 by the number of moves we have: Math.floor(99/dieSets.length) , or
99 / 4, which makes 24. We put that in to pVal to get the multiplier for each move. We then divide
pChance by pVal to get the move the computer will make and put that value into AIval . In this
case, it would be 2. However, since our array is zero-based, the move we have chosen for the
computer would be at index 1.
var pVal:Number = Math.floor(99/dieSets.length);
aiVal = Math.floor(pChance/pVal);
if (aiVal > dieSets.length-1) {
aiVal = dieSets.length-1;
}
} else {
aiVal = 0;
}