3D Game Programming

functionisWalking() {

if(is_moving_right)returntrue;

if(is_moving_left)returntrue;

if(is_moving_forward)returntrue;

if(is_moving_back)returntrue;

returnfalse;

}

document.addEventListener('keydown',function(event) {

varcode = event.keyCode;

if(code == 37) { // left

marker.position.x = marker.position.x-5;

is_moving_left = true;

}

if(code == 38) { // up

marker.position.z = marker.position.z-5;

is_moving_forward = true;

}

if(code == 39) { // right

marker.position.x = marker.position.x+5;

is_moving_right = true;

}

if(code == 40) { // down

marker.position.z = marker.position.z+5;

is_moving_back = true;

}

if(code == 67) is_cartwheeling = !is_cartwheeling;// C

if(code == 70) is_flipping = !is_flipping; // F

});

document.addEventListener('keyup',function(event) {

varcode = event.keyCode;

if(code == 37) {

console.log("not left anymore");

is_moving_left = false;

}

if(code == 38) is_moving_forward = false;

if(code == 39) is_moving_right = false;

if(code == 40) is_moving_back = false;

});

</script>

A1.9 Code: What’s All That Other Code?

There was no new code in Chapter 9, What's All That Other Code?, on page

85. We only explored the code that is automatically created when we start

new projects.

report erratum • discuss

Code: What’s All That Other Code? • 229

Prepared exclusively for Michael Powell