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path: root/bin/assets/ScriptsAssetSet/GrafittiBoard.lsl
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// Grafitti board 0.0.2 for OpenSim
// By Justin Clark-Casey (justincc)
// http://justincc.wordpress.com

// This script is available under the BSD License

string text = "";

integer LISTENING_CHANNEL = 43;

// XXX Only putting this here as well to get around OpenSim's int -> string casting oddness
string LISTENING_CHANNEL_STRING = "43";

// FIXME: Should be dynamic!
integer CHARS_WIDTH = 42;

// Add some additional graffiti
addGraffiti(string message)
{
    while (llStringLength(message) > CHARS_WIDTH)
    {
        text += "\n\n" + llGetSubString(message, 0, CHARS_WIDTH - 1);
        message = llDeleteSubString(message, 0, CHARS_WIDTH - 1);
    }
    
    text += "\n\n" + message;
}

// Clear the existing graffiti
clearGraffiti()
{
    text = "";
}

// Actually fires the graffiti out to the dynamic texture module
draw()
{
    //llSay(0, text);
    string drawList = "PenColour BLACK; MoveTo 40,220; FontSize 32; Text " + text + ";";

    osSetDynamicTextureData("", "vector", drawList, "1024", 0);
}

default
{
    state_entry()
    {      
        llSetText(
            "Say /" + LISTENING_CHANNEL_STRING + " <message> to add text."
            + "  Say /" + LISTENING_CHANNEL_STRING
            + " !clear to clear board", 
            <0.0, 1.0, 0.0>, 1.0);
        
        llListen(LISTENING_CHANNEL, "", NULL_KEY, "");      
        
        addGraffiti("justincc's graffiti board v0.0.2");
        addGraffiti("Now with primitive word wrap!");
        draw();        
    }
    
    listen(integer channel, string name, key id, string message)
    {
        if (message == "!clear")
        {
            clearGraffiti();
        }
        else
        {
            addGraffiti(message);
        }
        
        draw();
    }
}