3D Game Programming

vardirection = 0;

if(is_moving_forward) direction = Math.PI;

if(is_moving_back) direction = 0;

if(is_moving_right) direction = Math.PI/2;

if(is_moving_left) direction = -Math.PI/2;

spinAvatar(direction);

}

functionspinAvatar(direction) {

newTWEEN

.Tween({y: avatar.rotation.y})

.to({y: direction}, 100)

.onUpdate(function() {

avatar.rotation.y = this.y;

})

.start();

}

varis_cartwheeling = false;

varis_flipping = false;

functionacrobatics() {

if(is_cartwheeling) {

avatar.rotation.z = avatar.rotation.z + 0.05;

}

if(is_flipping) {

avatar.rotation.x = avatar.rotation.x + 0.05;

}

}

varis_moving_left, is_moving_right, is_moving_forward, is_moving_back;

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 == 32) jump(); // space

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;

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Code: Fruit Hunt • 237

Prepared exclusively for Michael Powell