Converting Keyboard Events into Avatar Movement
By playing with the keyboard event listener, we now know the numbers that correspond to each of the four arrow keys. We convert those arrow keys and numbers into avatar movement like this:
| Arrow Key | Computer Number | Avatar Direction |
|---|---|---|
| Left | 37 | Left |
| Up | 38 | Forward |
| Right | 39 | Right |
| Down | 40 | Back |
So let’s make this happen. Remove the alert(event.keyCode) line inside the document.addEventListener. Replace it with the following code, starting with the var code statement.
| | document.addEventListener('keydown', function(event) { |
| | var code = event.keyCode; |
| | if (code == 37) avatar.position.x = avatar.position.x-5; // left |
| | if (code == 38) avatar.position.z = avatar.position.z-5; // up |
| | if (code == 39) avatar.position.x ... |
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