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using UnityEngine;
using System;
using System.Collections.Generic;
using System.Reflection;
namespace BehaviorDesigner.Runtime.Tasks
{
[TaskDescription("Invokes the specified method with the specified parameters. Can optionally store the return value. Returns success if the method was invoked.")]
[HelpURL("http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=145")]
[TaskCategory("Reflection")]
[TaskIcon("{SkinColor}ReflectionIcon.png")]
public class InvokeMethod : Action
{
[Tooltip("The GameObject to invoke the method on")]
public SharedGameObject targetGameObject;
[Tooltip("The component to invoke the method on")]
public SharedString componentName;
[Tooltip("The name of the method")]
public SharedString methodName;
[Tooltip("The first parameter of the method")]
public SharedVariable parameter1;
[Tooltip("The second parameter of the method")]
public SharedVariable parameter2;
[Tooltip("The third parameter of the method")]
public SharedVariable parameter3;
[Tooltip("The fourth parameter of the method")]
public SharedVariable parameter4;
[Tooltip("Store the result of the invoke call")]
public SharedVariable storeResult;
public override TaskStatus OnUpdate()
{
var type = TaskUtility.GetTypeWithinAssembly(componentName.Value);
if (type == null) {
//Debug.LogWarning("Unable to invoke - type is null");
return TaskStatus.Failure;
}
var component = GetDefaultGameObject(targetGameObject.Value).GetComponent(type);
if (component == null) {
//Debug.LogWarning("Unable to invoke method with component " + componentName.Value);
return TaskStatus.Failure;
}
var parameterList = new List<object>();
var parameterTypeList = new List<Type>();
SharedVariable sharedVariable = null;
for (int i = 0; i < 4; ++i) {
var parameterField = GetType().GetField("parameter" + (i + 1));
if ((sharedVariable = parameterField.GetValue(this) as SharedVariable) != null) {
parameterList.Add(sharedVariable.GetValue());
parameterTypeList.Add(sharedVariable.GetType().GetProperty("Value").PropertyType);
} else {
break;
}
}
// If you are receiving a compiler error on the Windows Store platform see this topic:
// http://www.opsive.com/assets/BehaviorDesigner/documentation.php?id=46
var methodInfo = component.GetType().GetMethod(methodName.Value, parameterTypeList.ToArray());
if (methodInfo == null) {
//Debug.LogWarning("Unable to invoke method " + methodName.Value + " on component " + componentName.Value);
return TaskStatus.Failure;
}
var result = methodInfo.Invoke(component, parameterList.ToArray());
if (storeResult != null) {
storeResult.SetValue(result);
}
return TaskStatus.Success;
}
public override void OnReset()
{
targetGameObject = null;
componentName = null;
methodName = null;
parameter1 = null;
parameter2 = null;
parameter3 = null;
parameter4 = null;
storeResult = null;
}
}
}
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