查看“LlDialog”的源代码

{{LSL Header|ml=*}}{{LSLC|Keywords}}{{LSLC|Flow Control}}{{LSLC|}}


{{函数详情
|函数名 = Function: llDialog( key avatar, string message, list buttons, integer channel );
|参数= 参数：
*key avatar–avatar UUID that is in the same region	
*string	message–message to be displayed in the dialog box	
*list buttons–button labels	
*integer channel–output chat channel, any integer value	

|返回值= 返回值：Shows a dialog box in the lower right corner of the avatar's screen (upper right in Viewer 1.x) with a message and choice buttons, as well as an ignore button. This has many uses ranging from simple message delivery to complex menu systems.


|注意事项=
*This function causes the script to sleep for 1.0 seconds.
*This function only opens a dialog box. The script must then also register a listener on the same channel using llListen and have a listen event handler to receive the response.
*There is no way by script to kill a dialog box.
*There is no way for the script to detect if the user clicked the small ["Ignore"] button (no chat is generated as a result of pressing this button).
*There is no way to distinguish the input from a dialog box and regular chat made by the same user.
**It is important to expect that the response may not be one of the buttons.
*In most cases, the listener will be in the same script as the llDialog, however if not, the distance between the root prim of the listening object and the dialog generating prim becomes a factor. If this distance is greater than 20 meters when a button is pressed, the response will not be heard. See #Limits.
**This limitation affects attachments too if the wearer moves more than 20 meters from where the listener is located. See #Limits.
**If the listener resides in the same script that created the dialog, then the dialog button is heard sim-wide.
*By default, only one dialog can be displayed per object in the Second Life Viewer. This can be overridden by the ScriptDialogLimitations debug setting in the Viewer.
*The dialog response (the generated chat) has its in world location at the root prim's global position.
 It can generate a listen event within 20 meters from that position.
*The listening location for a child prim in the object is either at the child prim's location or at the root prim's location
see bugtrace JIRA SCR-43

|示例=
示例1
<pre>
// When the prim is touched, give the toucher the option of killing the prim.
 
integer gListener;     // Identity of the listener associated with the dialog, so we can clean up when not needed
 
default
{
    touch_start(integer total_number)
    {
        // Kill off any outstanding listener, to avoid any chance of multiple listeners being active
        llListenRemove(gListener);
        // get the UUID of the person touching this prim
        key user = llDetectedKey(0);
        // Listen to any reply from that user only, and only on the same channel to be used by llDialog
        // It's best to set up the listener before issuing the dialog
        gListener = llListen(-99, "", user, "");
        // Send a dialog to that person. We'll use a fixed negative channel number for simplicity
        llDialog(user, "\nDo you wish this prim to die?", ["Yes", "No" ] , -99);
        // Start a one-minute timer, after which we will stop listening for responses
        llSetTimerEvent(60.0);
    }
    listen(integer chan, string name, key id, string msg)
    {
        // If the user clicked the "Yes" button, kill this prim.
        if (msg == "Yes")
            llDie();
        // The user did not click "Yes" ...
        // Make the timer fire immediately, to do clean-up actions
        llSetTimerEvent(0.1);        
    }
    timer()
    {
        // Stop listening. It's wise to do this to reduce lag
        llListenRemove(gListener);
        // Stop the timer now that its job is done
        llSetTimerEvent(0.0);// you can use 0 as well to save memory
    }
}
</pre>

示例2
<pre>
string mainMenuDialog = "\nWhich settings would you like to access?\nClick \"Close\" to close the menu.\n\nYou are here:\nMainmenu";
list mainMenuButtons = ["sub 01", "sub 02", "Close"];
 
string subMenu_01_Dialog = "\nClick \"Close\" to close the menu.\nClick \"-Main-\" to return to the main menu.\n\nYou are here:\nMainmenu > sub 01";
list subMenu_01_Buttons = ["action 01a", "action 01b", "Close", "-Main-"];
 
string subMenu_02_Dialog = "\nClick \"Close\" to close the menu.\nClick \"-Main-\" to return to the main menu.\n\nYou are here:\nMainmenu > sub 02";
 
list subMenu_02_Buttons = ["action 02a", "action 02b", "Close", "-Main-"];
 
integer dialogChannel;
integer dialogHandle;
 
open_menu(key inputKey, string inputString, list inputList)
{
    dialogChannel = (integer)llFrand(DEBUG_CHANNEL)*-1;
    dialogHandle = llListen(dialogChannel, "", inputKey, "");
    llDialog(inputKey, inputString, inputList, dialogChannel);
    llSetTimerEvent(30.0);
}
 
close_menu()
{
    llSetTimerEvent(0.0);// you can use 0 as well to save memory
    llListenRemove(dialogHandle);
}
 
default
{
    on_rez(integer start_param)
    {
        llResetScript();
    }
 
    touch_start(integer total_number)
    {
        key id = llDetectedKey(0);
        // Ensure any outstanding listener is removed before creating a new one
        close_menu();
        open_menu(id, mainMenuDialog, mainMenuButtons);
    }
 
    listen(integer channel, string name, key id, string message)
    {
        if(channel != dialogChannel)
            return;
 
        close_menu();
 
        if(message == "-Main-")
            open_menu(id, mainMenuDialog, mainMenuButtons);
 
        else if(message == "sub 01")
            open_menu(id, subMenu_01_Dialog, subMenu_01_Buttons);
 
        else if(message == "sub 02")
            open_menu(id, subMenu_02_Dialog, subMenu_02_Buttons);
 
        else if (message == "action 01a")
        {
            //do something
            open_menu(id, subMenu_01_Dialog, subMenu_01_Buttons);
        }
        else if (message == "action 01b")
        {
            //do something else
 
            //maybe not re-open the menu for this option?
            //open_menu(id, subMenu_01_Dialog, subMenu_01_Buttons);
        }
        else if (message == "action 02a")
        {
            //do something
            open_menu(id, subMenu_02_Dialog, subMenu_02_Buttons);
        }
        else if (message == "action 02b")
        {
            //do something else
            open_menu(id, subMenu_02_Dialog, subMenu_02_Buttons);
        }
    }
 
    timer()
    {
        close_menu();
    }
}
</pre>


|相关函数=
[[llListen]]			
[[llTextBox]]			
[[llRegionSay]]			
[[llWhisper]]–Sends chat limited to 10 meters	
[[llSay]]–Sends chat limited to 20 meters	
[[llShout]]–Sends chat limited to 100 meters	
[[llInstantMessage]]–Sends chat to the specified user	
[[llOwnerSay]]–Sends chat to the owner only	


|相关事件=
[[listen]]			
}}