代码自动创建AnimatorController和动画测试环境
用所选动画一键创建Animator Controller，并且搭建好动画测试环境，添加测试动画的UI按钮。
手动创建Animator挺费事的，特别是反复修改动画再倒入Unity里测试的时候。我当前参与的项目用的Live2D做纸片人动画，做的AnimatorController只是把所有的AnimationClip分别填再一个State里，然后都是创建AnyState的Transition。如下图。
规则很简单，所以很容易用代码创建。
代码如下：
using UnityEngine;
using UnityEditor;
using UnityEditor.Animations;
using System.Collections;
public class TestInitializeAC : MonoBehaviour
{
[MenuItem(“WalkingFat/Initialize Animator Test Tool")]
static void CreateController()
{
// 先创建这个animator controller
var controller = UnityEditor.Animations.AnimatorController.CreateAnimatorControllerAtPath("Assets/StateMachineTransitions.controller");
// 然后在layer 0 里加一个状态机
var rootStateMachine = controller.layers[0].stateMachine;
// 创建一个参数“statusId”，后面就通过修改这个参数改变动画
controller.AddParameter("statusId", AnimatorControllerParameterType.Int);
// 最后在这里通过循环语句，在当前选中的内容里筛选出animation clip创建state。
int clipCount = 0;
for (int i = 0; i < Selection.objects.Length; ++i)
{
if (Selection.objects[i].GetType().ToString() == "UnityEngine.AnimationClip") { // 判断选中的对象是不是animation clip
// 在状态机里创建state
var state = rootStateMachine.AddState(Selection.objects[i].name);
// 把animation clip填入state的Motion里
state.motion = Selection.objects[i] as Motion;
// 创建跳转，这里就直接从anyState里跳转到各个state
var stateMachineTransition = rootStateMachine.AddAnyStateTransition(state);
// 设置跳转条件：当参数“statusId”等于一个id值时，这里id从0开始递增。
stateMachineTransition.AddCondition(UnityEditor.Animations.AnimatorConditionMode.Equals, clipCount, "statusId”);
// 把“canTransitionToSelf ”设成false，避免卡死在动画第一帧。
stateMachineTransition.canTransitionToSelf = false;
// 跳转过度周期设成0.2秒
stateMachineTransition.duration = 0.2f;
clipCount += 1; // 最后id递增
}
}
}
}这样在unity主菜单里就可以直接点按钮执行这个方法了。
现在Animator可以自动创建了，再做个运行测试工具：
- 在project窗口里选中所有animation clip，再到Hierarchy窗口里选中动画对象的GameObject，再点击顶部菜单按钮“WalkingFat > Initialize Animator Test Tool”
- 自动根据所有State创建一排按钮，并且以动画名字命名
- 点击按钮通过修改animator的参数“statusId”的方式播放对应的动画。
现在只需要把动画导入unity引擎，然后完成以上三步就可以创建好aniamtor controller和测试按钮，并且所有对象的关联都做好了，直接运行就可以看效果了。
实现这两条用了蛮多UnityEditor和EventSystem的知识。
完整代码：
using UnityEngine;
using UnityEditor;
using UnityEditor.Animations;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.Events;
using UnityEditor.Events;
using UnityEngine.EventSystems;
public class WfAnimInitializeTool : MonoBehaviour
{
[MenuItem("WalkingFat/Initialize Animator Test Tool")]
static void CreateController()
{
// 首先检测一下选中的对象是否符合要求：在Hierarchy里选择1个animator对象，在Project里选择若干animation clip
int selectedAnimClipCount = 0;
int selectedL2dObjCount = 0;
int l2dObjId = 0;
for (int i = 0; i < Selection.objects.Length; ++i)
{
if (Selection.objects[i].GetType().ToString() == "UnityEngine.AnimationClip")
selectedAnimClipCount += 1;
if (Selection.objects[i].GetType().ToString() == "UnityEngine.GameObject")
{
selectedL2dObjCount += 1;
l2dObjId = i;
}
}
// 不符合要求报错，并且终止
if (selectedL2dObjCount == 0)
{
Debug.LogError("Please select the Animator GameObject in Hierarchy.");
return;
}
if (selectedL2dObjCount > 1)
{
Debug.LogError("Please select 1 Animator GameObject Hierarchy.");
return;
}
if (selectedAnimClipCount == 0)
{
Debug.LogError("Please select Animation Clips in Project.");
return;
}
// 检测animator对象是否带有Aniamtor component，没有就装一个
GameObject animObj = Selection.objects[l2dObjId] as GameObject;
Animator animInObj = animObj.GetComponent<Animator>();
if (animInObj == null)
animInObj = animObj.AddComponent<Animator>();
// 在project里创建一个用来放animator controller的目录
if (AssetDatabase.IsValidFolder("Assets/TempAnimatorController") == false)
AssetDatabase.CreateFolder("Assets", "TempAnimatorController");
// 创建animator controller
var controller = UnityEditor.Animations.AnimatorController.CreateAnimatorControllerAtPath("Assets/TempAnimatorController/" + animObj.name + ".controller");
// 在animator controller里创建状态机
var rootStateMachine = controller.layers[0].stateMachine;
// 创建一个参数“statusId”，后面就通过修改这个参数改变动画
controller.AddParameter("statusId", AnimatorControllerParameterType.Int);
// 创建canvas
GameObject canvas = GameObject.Find("Canvas");
GameObject btnCon;
GameObject button;
GameObject eventSystem = GameObject.Find("EventSystem");
if (canvas == null)
canvas = new GameObject("Canvas", typeof(Canvas), typeof(RectTransform), typeof(CanvasScaler), typeof(GraphicRaycaster)); //创建一个GameObject 加入Canvas的组件
if (eventSystem == null)
eventSystem = new GameObject("EventSystem", typeof(EventSystem), typeof(StandaloneInputModule)); //创建一个GameObject 加入Canvas的组件
canvas.GetComponent<CanvasScaler>().referenceResolution = new Vector2(600, 800);
canvas.GetComponent<CanvasScaler>().matchWidthOrHeight = 1f;
canvas.GetComponent<Canvas>().renderMode = RenderMode.ScreenSpaceOverlay;
// 检测并删除掉老的按钮
btnCon = GameObject.Find("Canvas/UI_AnimTestButtonList");
if (btnCon != null)
DestroyImmediate(btnCon);
// 创建新的UI按钮的容器
btnCon = new GameObject("UI_AnimTestButtonList", typeof(RectTransform));
btnCon.transform.SetParent(canvas.transform, false);
btnCon.transform.localScale = new Vector3(1,1,1);
btnCon.GetComponent<RectTransform>().pivot = new Vector2(0, 1);
btnCon.GetComponent<RectTransform>().anchorMin = new Vector2(0, 0);
btnCon.GetComponent<RectTransform>().anchorMax = new Vector2(0, 1);
btnCon.GetComponent<RectTransform>().offsetMin = new Vector2(0, 0);
btnCon.GetComponent<RectTransform>().offsetMax = new Vector2(300, 0);
GridLayoutGroup glg = btnCon.AddComponent<GridLayoutGroup>();
glg.padding.left = 10;
glg.padding.right = 10;
glg.padding.top = 10;
glg.padding.bottom = 10;
glg.cellSize = new Vector2(100,40);
glg.spacing = new Vector2(10, 10);
// 设置状态机的状态和跳转条件，创建测试按钮。
int clipCount = 0;
for (int i = 0; i < Selection.objects.Length; ++i)
{
if (Selection.objects[i].GetType().ToString() == "UnityEngine.AnimationClip") {
// 创建状态并且把动画clip填进去
var state = rootStateMachine.AddState(Selection.objects[i].name);
state.motion = Selection.objects[i] as Motion;
// 创建传输条件
var stateMachineTransition = rootStateMachine.AddAnyStateTransition(state);
stateMachineTransition.AddCondition(UnityEditor.Animations.AnimatorConditionMode.Equals, clipCount, "statusId");
stateMachineTransition.canTransitionToSelf = false;
stateMachineTransition.duration = 0.2f;
// 创建测试按钮
button = new GameObject("Btn_" + Selection.objects[i].name, typeof(RectTransform), typeof(Image), typeof(Button)); //创建一个GameObject 加入Button组件
Button btn = button.GetComponent<Button>();
button.transform.SetParent(btnCon.transform, false); //把Canvas设置成Button的父物体
button.transform.localScale = new Vector3(1, 1, 1);
ColorBlock cb = new ColorBlock();
cb.normalColor = new Color(1, 1, 1, 1);
cb.highlightedColor = new Color(1, 1, 0, 1);
cb.pressedColor = new Color(0.9f, 0.9f, 0.9f, 1);
cb.disabledColor = new Color(0.6f, 0.6f, 0.6f, 1);
cb.colorMultiplier = 1;
btn.colors = cb;
// 设置按钮文字和按钮颜色
GameObject btnText = new GameObject("Text", typeof(RectTransform), typeof(Text));
btnText.transform.SetParent(button.transform, false);
btnText.transform.localScale = new Vector3(1,1,1);
btnText.GetComponent<RectTransform>().anchorMin = new Vector2(0, 0);
btnText.GetComponent<RectTransform>().anchorMax = new Vector2(1, 1);
btnText.GetComponent<RectTransform>().offsetMin = new Vector2(0, 0);
btnText.GetComponent<RectTransform>().offsetMax = new Vector2(0, 0);
btnText.GetComponent<Text>().alignment = TextAnchor.MiddleCenter;
btnText.GetComponent<Text>().text = Selection.objects[i].name;
btnText.GetComponent<Text>().color = new Color(0,0,0,1);
btnText.GetComponent<Text>().fontSize = 12;
// 在按钮里添加Onclick事件，由于按钮事件无法传递参数，所以另写了一个绑在按钮上的类来存储状态Id和设置动画状态ID的方法。
WfAutomaticAnimSetter btnCtrlr = button.AddComponent<WfAutomaticAnimSetter>();
btnCtrlr.id = clipCount;
btnCtrlr.anim = animInObj;
UnityAction setId = System.Delegate.CreateDelegate(typeof(UnityAction), btnCtrlr, "SetAnimId") as UnityAction;
UnityEventTools.AddPersistentListener(btn.onClick, setId);
clipCount += 1;
}
}
// 最后把创建好的Animation Controller填到动画对象的Animator里
animInObj.runtimeAnimatorController = controller;
}
}
另外按钮上要绑一个set动画状态的代码：
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
public class WfAutomaticAnimSetter : MonoBehaviour {
// 存储Animator引用和动画Id
public Animator anim;
public int id;
// 用于按钮Onclick事件
public void SetAnimId () {
anim.SetInteger ("statusId", id);
}
}
