69 lines
2.3 KiB
C#
69 lines
2.3 KiB
C#
using System.Collections;
|
|
using System.Collections.Generic;
|
|
using UnityEngine;
|
|
using Drawing;
|
|
|
|
namespace Drawing.Examples {
|
|
[HelpURL("http://arongranberg.com/aline/documentation/stable/gizmocharacterexample.html")]
|
|
public class GizmoCharacterExample : MonoBehaviourGizmos {
|
|
public Color gizmoColor = new Color(1.0f, 88/255f, 85/255f);
|
|
public Color gizmoColor2 = new Color(79/255f, 204/255f, 237/255f);
|
|
|
|
public float movementNoiseScale = 0.2f;
|
|
public float startPointAttractionStrength = 0.05f;
|
|
public int futurePathPlotSteps = 100;
|
|
public int plotStartStep = 10;
|
|
public int plotEveryNSteps = 10;
|
|
|
|
float seed;
|
|
Vector3 startPosition;
|
|
void Start () {
|
|
seed = Random.value * 1000;
|
|
startPosition = transform.position;
|
|
}
|
|
|
|
Vector3 GetSmoothRandomVelocity (float time, Vector3 position) {
|
|
// Use perlin noise to get a smoothly varying vector
|
|
float t = time * movementNoiseScale + seed;
|
|
var dx = 2*Mathf.PerlinNoise(t, t + 5341.23145f) - 1;
|
|
var dy = 2*Mathf.PerlinNoise(t + 92.9842f, -t + 231.85145f) - 1;
|
|
var velocity = new Vector3(dx, 0, dy);
|
|
|
|
// Make a weak attractor to the start position of the agent. To make sure the agent doesn't move too far out of view
|
|
velocity += (startPosition - position) * startPointAttractionStrength;
|
|
velocity.y = 0;
|
|
return velocity;
|
|
}
|
|
|
|
void PlotFuturePath (float time, Vector3 position) {
|
|
float dt = 0.05f;
|
|
|
|
for (int i = 0; i < futurePathPlotSteps; i++) {
|
|
var v = GetSmoothRandomVelocity(time + i*dt, position);
|
|
|
|
var idx = i - plotStartStep;
|
|
if (idx >= 0 && idx % plotEveryNSteps == 0) {
|
|
Draw.Arrowhead(position, v, 0.1f, gizmoColor);
|
|
}
|
|
position += v.normalized * dt;
|
|
}
|
|
}
|
|
|
|
// Update is called once per frame
|
|
void Update () {
|
|
PlotFuturePath(Time.time, transform.position);
|
|
Vector3 velocity = GetSmoothRandomVelocity(Time.time, transform.position);
|
|
transform.rotation = Quaternion.LookRotation(velocity);
|
|
transform.position += transform.forward * Time.deltaTime;
|
|
}
|
|
|
|
public override void DrawGizmos () {
|
|
using (Draw.InLocalSpace(transform)) {
|
|
Draw.WireCylinder(Vector3.zero, Vector3.up, 2, 0.5f, gizmoColor);
|
|
Draw.ArrowheadArc(Vector3.zero, Vector3.forward, 0.55f, gizmoColor);
|
|
Draw.Label2D(Vector3.zero, gameObject.name, 14, LabelAlignment.TopCenter.withPixelOffset(0, -20), gizmoColor2);
|
|
}
|
|
}
|
|
}
|
|
}
|