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六、事件響應(yīng)
像所有 OOP 一樣，MSAgent 也設(shè)置有相應(yīng)的事件響應(yīng)，看看下面的例子，試試在角色或任務(wù)欄的圖標(biāo)上點(diǎn)擊鼠標(biāo)（單/雙擊），你也可以移動(dòng)一下角色，看看它有什么反應(yīng)：

運(yùn)行代碼框
<object style="visibility:hidden" id="MSAgent" classid="CLSID:D45FD31B-5C6E-11D1-9EC1-00C04FD7081F"></object> <Script Language="JavaScript" For="MSAgent" Event="Click(CharacterID, Button, Shift, X, Y)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 if(Button==1 && Agent.Visible) { if(remote) { Agent.get("state", "Speaking"); Agent.get("animation", "Acknowledge, Pleased"); } Agent.Play("Acknowledge"); Agent.Speak("Yes sir! " + CharacterID + " is right here!"); Agent.Play("Pleased") Agent.Speak("What can I do for you?"); } else if(Button==4097) { Agent.Visible?Agent.Hide():Agent.show(); } </Script> <Script Language="JavaScript" For="MSAgent" Event="DblClick(CharacterID, Button, Shift, X, Y)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 if(Button==1 || Button==4097) { Agent.StopAll(); if (!Agent.HasOtherClients) { MSAgent.Characters.Unload(AgentID); MSAgent.Connected = false; Agent = null; AgentLoad = false; } } </Script> <Script Language="JavaScript" For="MSAgent" Event="Move(CharacterID, X, Y, Cause)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 if(Cause == 1) { if(remote) { Agent.get("state", "Moving, Speaking"); Agent.get("animation", "Confused, RestPose"); } Agent.MoveTo(400, 300); Agent.Play("Confused"); Agent.Speak("Don't move me OK?"); Agent.Play("RestPose"); } </Script> <Script language="JavaScript"> //Coded by Windy_sk <windy_sk@126.com> 20040214 var Agent = null; var AgentID, AgentACS; var AgentLoad = false; var remote = false; function LoadAgent(NewAgent) { if(AgentLoad) { MSAgent.Characters.Unload(AgentID); MSAgent.Connected = false; Agent = null; } AgentID = NewAgent; AgentACS = NewAgent + ".acs"; MSAgent.Connected = true; try { MSAgent.Characters.Load(AgentID, AgentACS); } catch(e) { AgentACS = "http://agent.microsoft.com/agent2/chars/" + NewAgent + "/" + NewAgent + ".acf"; remote = true; MSAgent.Characters.Load(AgentID, AgentACS); if(confirm("Cannot find the MSAgent charactor file on your hard disk! \nWould you like to download the MSAgent charactor file for the next show?")) window.open("http://www.msagentring.org/download.asp?char="+NewAgent.toLowerCase(),"_blank","top=2000px"); } AgentLoad = true; Agent = MSAgent.Characters.Character(AgentID); Agent.LanguageID = 0x0409; if(remote) Agent.get("state", "Showing, Hiding"); Agent.MoveTo(400, 300); Agent.Show(); return; } LoadAgent("Merlin"); </Script> MSAgent Select : <SELECT name="Agent_select" onchange="LoadAgent(this[this.selectedIndex].text)"> <OPTION>Merlin</OPTION> <OPTION>Peedy</OPTION> <OPTION>Genie</OPTION> <OPTION>Robby</OPTION> </SELECT>
[Ctrl+A 全部選擇 提示：你可先修改部分代碼，再按運(yùn)行]

是不是感覺(jué)交互性強(qiáng)了許多？我們來(lái)看一下事件處理的聲明方法：
<Script Language="JavaScript" For="MSAgent_Object" Event="Event_Name()">
//code...
</Script>

熟悉一點(diǎn) JS 編程的應(yīng)該不會(huì)陌生這種聲明方式，也就是對(duì)某一對(duì)象某一事件的單獨(dú)處理的聲明方法，但是如果是該成 MSAgent_Object.Event_Name = function() {//code...} 的事件處理聲明是不可以的！（the only way to do this）

如果是采用網(wǎng)絡(luò)調(diào)用的話，如果向用戶(hù)通知相應(yīng)的調(diào)用進(jìn)度呢？

運(yùn)行代碼框
<object style="visibility:hidden" id="MSAgent" classid="CLSID:D45FD31B-5C6E-11D1-9EC1-00C04FD7081F"></object> <Script Language="JavaScript" For="MSAgent" Event="RequestStart(RequestObject)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 switch (RequestObject) { case AgentLoadRequest : window.status = "Loading MSAgent File From Internet For " + AgentID + " ..."; break; case AgentStateRequest : window.status = "Loading MSAgent State From Internet For " + AgentID + " ..."; break; case AgentAnimationRequest : window.status = "Loading MSAgent Animation From Internet For " + AgentID + " ..."; break; default: break; } </Script> <Script Language="JavaScript" For="MSAgent" Event="RequestComplete(RequestObject)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 switch (RequestObject) { case AgentLoadRequest : if(RequestObject.Status == 0) { window.status = "MSAgent File For " + AgentID + " Has Been Loaded Successfully !"; } else { window.status = "Cannot Load MSAgent File For " + AgentID + " From " + AgentACS + " !"; } break; case AgentStateRequest : if(RequestObject.Status == 0) { window.status = "MSAgent State For " + AgentID + " Has Been Loaded Successfully !"; } else { window.status = "Cannot Load MSAgent State For " + AgentID + " From " + AgentACS + " !"; } break; break; case AgentAnimationRequest : if(RequestObject.Status == 0) { window.status = "MSAgent Animation For " + AgentID + " Has Been Loaded Successfully !"; } else { window.status = "Cannot Load MSAgent Animation For " + AgentID + " From " + AgentACS + " !"; } break; break; default: window.status = ""; break; } </Script> <Script Language="JavaScript" For="MSAgent" Event="DragStart(CharacterID, Button, Shift, X, Y)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 cur_x = X - Agent.width/2; cur_y = Y - Agent.height/2; </Script> <Script Language="JavaScript" For="MSAgent" Event="DragComplete(CharacterID, Button, Shift, X, Y)"> //Coded by Windy_sk <windy_sk@126.com> 20040214 if(remote) { AgentStateRequest = Agent.get("state", "Moving, Speaking"); AgentAnimationRequest = Agent.get("animation", "Confused, RestPose"); } Agent.MoveTo(cur_x, cur_y); Agent.Play("Confused"); Agent.Speak("Don't move me OK?"); Agent.Play("RestPose"); </Script> <Script language="JavaScript"> //Coded by Windy_sk <windy_sk@126.com> 20040214 var Agent = null; var AgentID, AgentACS; var AgentLoad = false; var remote = false; var cur_x, cur_y; var AgentLoadRequest, AgentStateRequest, AgentAnimationRequest; function LoadAgent(NewAgent) { if(AgentLoad) { MSAgent.Characters.Unload(AgentID); MSAgent.Connected = false; Agent = null; } AgentID = NewAgent; AgentACS = NewAgent + ".acs"; MSAgent.Connected = true; try { AgentLoadRequest = MSAgent.Characters.Load(AgentID, AgentACS); } catch(e) { AgentACS = "http://agent.microsoft.com/agent2/chars/" + NewAgent + "/" + NewAgent + ".acf"; remote = true; AgentLoadRequest = MSAgent.Characters.Load(AgentID, AgentACS); if(confirm("Cannot find the MSAgent charactor file on your hard disk! \nWould you like to download the MSAgent charactor file for the next show?")) window.open("http://www.msagentring.org/download.asp?char="+NewAgent.toLowerCase(),"_blank","top=2000px"); } AgentLoad = true; Agent = MSAgent.Characters.Character(AgentID); Agent.LanguageID = 0x0409; if(remote) { AgentStateRequest = Agent.get("state", "Showing, Thinking, Hiding"); AgentAnimationRequest = Agent.get("animation", "GetAttention, GetAttentionContinued, GetAttentionReturn"); } Agent.MoveTo(400, 300); Agent.Show(); Agent.Play("GetAttention"); Agent.Play("GetAttentionContinued"); Agent.Play("GetAttentionReturn"); Agent.speak("Hi, I am " + NewAgent + "!"); Agent.think("Oh so bad, I just wanna take a nap..."); return; } LoadAgent("Merlin"); </Script> MSAgent Select : <SELECT name="Agent_select" onchange="LoadAgent(this[this.selectedIndex].text)"> <OPTION>Merlin</OPTION> <OPTION>Peedy</OPTION> <OPTION>Genie</OPTION> <OPTION>Robby</OPTION> </SELECT>
[Ctrl+A 全部選擇 提示：你可先修改部分代碼，再按運(yùn)行]

注意到窗口底部狀態(tài)欄的顯示了嗎？雖然無(wú)法獲取具體的下載進(jìn)度，但是至少也可以讓瀏覽者知道角色的動(dòng)作為什么會(huì)有停頓（這個(gè)停頓只在某動(dòng)畫(huà)第一次調(diào)用的時(shí)候出現(xiàn)，調(diào)用后該動(dòng)畫(huà)會(huì)被緩存）。

更多的事件說(shuō)明請(qǐng)參看 msdn.microsoft.com/library/en-us/msagent/paface_2xet.asp 但是瀏覽器所調(diào)用的 MSAgeng 對(duì)象并不是所有的事件都支持。

出處：藍(lán)色理想
責(zé)任編輯：nudeangel

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