HTML and CSS Reference
In-Depth Information
Summoning the enemies
In this task, we spawn enemies on the board.
Prepare for lift off
We create one file for each type of enemy. They are
enemy.js
,
enemy-dummy.js
,
enemy1.js
,
enemy2.js
,
enemy3.js
, and
boss.js
. Let's create these files and put them
inside the
scripts/board-objects/enemies/
folder. Then, we include them in the
game's HTML. The base
enemy.js
file comes first because all the other enemy types are
based on
enemy.js
and need its reference:
<script src="scripts/board-objects/enemies/enemy.js"></script>
<script src="scripts/board-objects/enemies/enemy-dummy.js"></script>
<script src="scripts/board-objects/enemies/enemy1.js"></script>
<script src="scripts/board-objects/enemies/enemy2.js"></script>
<script src="scripts/board-objects/enemies/enemy3.js"></script>
<script src="scripts/board-objects/enemies/boss.js"></script>
We need one more
helper
funcion. The
removeItem
funcion inds the given target
in the given array and removes it:
// remove an item from an array.
game.helper.removeItem = function(array, target) {
for(var i=0, len=array.length; i<len; i++) {
if (array[i] === target) {
array.splice(i, 1); // remove that target
return true;
}
}
return false;
};
If you are looking for more funcions to manipulate arrays, Lo-dash is a good
choice to check out (
http://lodash.com
).
