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beta.r3js.org
polygonboutique 2016-11-25 14:40:41 +01:00
parent 9c90cb81ac
commit b91f0b57ea
1 changed files with 11 additions and 12 deletions
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23
src/game-lib-component-path-following.js
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@ -14,6 +14,7 @@ GameLib.D3.ComponentPathFollowing = function ComponentPathFollowing(
id,
name,
splineCurve3,
normalSplineCurve3,
accel,
maxSpeed,
baseOffset,
@ -30,6 +31,7 @@ GameLib.D3.ComponentPathFollowing = function ComponentPathFollowing(
this.parentEntity = null;
this.splineCurve3 = splineCurve3;
this.normalSplineCurve3 = normalSplineCurve3;
this.maxSpeed = maxSpeed || 10.0;
this.accel = accel || 2.0;
@ -57,7 +59,7 @@ GameLib.D3.ComponentPathFollowing.prototype.onUpdate = function(
parentEntity
) {
if(this.splineCurve3) {
if(this.splineCurve3 && this.normalSplineCurve3) {
if(this.currentPathValue >= 1 || this.currentPathValue < 0) {
this.currentPathValue = 0;
@ -67,19 +69,16 @@ GameLib.D3.ComponentPathFollowing.prototype.onUpdate = function(
//http://stackoverflow.com/questions/18400667/three-js-object-following-a-spline-path-rotation-tanget-issues-constant-sp
var position = this.splineCurve3.getPointAt(this.currentPathValue);
var nextIndex = this.currentPathValue + 0.005;
if(nextIndex > 1.0) {
nextIndex = 0;
}
// var nextPosition = this.splineCurve3.getPointAt(this.currentPathValue + 0.01);
var nextPoint = this.splineCurve3.getPointAt(nextIndex);
var normal = this.normalSplineCurve3.getPointAt(this.currentPathValue).normalize();
var rotation = this.splineCurve3.getTangentAt(this.currentPathValue).normalize();
//var tangent = this.splineCurve3.getTangentAt(this.currentPathValue).normalize();
//var rotation = position.clone().normalize().cross( tangent );
// extract rotation
var forward = new THREE.Vector3(-1, 0, 0);
var axis = new THREE.Vector3();
axis.crossVectors(forward, rotation).normalize();
var radians = Math.acos(forward.dot(rotation));
var quaternion = new THREE.Quaternion().setFromAxisAngle(axis, radians);
var matrix = new THREE.Matrix4().lookAt(position, nextPoint, normal);
var quaternion = new THREE.Quaternion().setFromRotationMatrix(matrix);
{ // update current speed
var t = deltaTime * this.accel;