https://wiki.virtualparadise.org/index.php?action=history&feed=atom&title=Vp_doubleVp double - Revision history2026-05-04T21:09:07ZRevision history for this page on the wikiMediaWiki 1.42.1https://wiki.virtualparadise.org/index.php?title=Vp_double&diff=4302&oldid=prevSleepy E: Basic layout2016-12-14T20:29:12Z<p>Basic layout</p>
<p><b>New page</b></p><div>{{sdk method page|double|Return the value of a floating point attribute (with double-precision)<br />
|paramex=attr<br />
|parameters=<br />
{{sdk parameter row|vp_float_attribute_t|attr|Attribute to return value of (defined in VP.h)}}<br />
|returns=<br />
The value of the attribute.<br />
|behavior=If an invalid identifier is passed for <i>attr</i>, then 0 will be returned.<br />
|caveats=There is no way to know if the call was unsuccessful, use {{sdk method|double_get}} when this is required.<br />
|examples=<br />
<syntaxhighlight lang="c"><br />
void handle_avatar_add(VPInstance sdk)<br />
{<br />
double x, z;<br />
<br />
x = vp_double(sdk, VP_AVATAR_X);<br />
z = vp_double(sdk, VP_AVATAR_Z);<br />
<br />
// If an avatar appears at roughly 0X 0Z (at any height), then send a welcome message.<br />
if (x > -0.5 && x < 0.5 && y > -0.5 && y < 0.5)<br />
{<br />
char msg[256];<br />
<br />
sprintf(msg, "Welcome %s to the world!", vp_string(sdk, VP_AVATAR_NAME));<br />
vp_say(sdk, msg);<br />
}<br />
}<br />
<br />
int main(int argc, const char* argv[])<br />
{<br />
<br />
//...<br />
<br />
vp_event_set(sdk, VP_EVENT_AVATAR_ADD, handle_avatar_add);<br />
<br />
//...<br />
}<br />
</syntaxhighlight><br />
|seealso=<br />
* {{sdk method|double_get}}<br />
* {{sdk method|double_set}}<br />
}}</div>Sleepy E