Difference between revisions of "LlGround"

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m (Isolated a caveat)
m (<lsl> tag to <source>)
 
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{{LSL_Function
{{LSL_Function
|inject-2={{LSL Function/offset|offset|noZ=*|sim=*}}
|func_id=42|func_sleep=0.0|func_energy=10.0
|func_id=42|func_sleep=0.0|func_energy=10.0
|sort=Ground
|sort=Ground
|func=llGround|sort=Ground
|func=llGround|sort=Ground
|return_type=float|p1_type=vector|p1_name=offset
|return_type=float|p1_type=vector|p1_name=offset
|func_footnote=Only the X and Y coordinates of the '''offset''' are important.
|func_desc
|func_desc
|return_text=that is the ground height directly below the prim plus an '''offset'''
|return_text=that is the ground height directly below the [[llGetPos|prim position]] + {{LSLP|offset}}
|spec
|spec
|caveats=
|caveats
|constants
|constants
|examples=The requested position needs to be in the same sim
|examples=
<lsl>// Get the object to land on the ground or on the water
<source lang="lsl2">// Makes the object land on ground or on water
// by Konigmann Lippmann & Strife Onizuka
FindGroundOrWater()
FindGroundOrWater()
{
{
     float fHeight = llGround( ZERO_VECTOR );
     vector vTarget = llGetPos();
    vTarget.z = llGround( ZERO_VECTOR );
     float fWaterLevel = llWater( ZERO_VECTOR );
     float fWaterLevel = llWater( ZERO_VECTOR );
     if( fHeight < fWaterLevel )
     if( vTarget.z < fWaterLevel )
         fHeight = fWaterLevel;
         vTarget.z = fWaterLevel;
    vector vTarget = llGetPos();
     llSetRegionPos(vTarget);
 
    //llSetPos can only move 10m at a time.
    integer iCounter = 1 + llAbs((integer)(vTarget.z - fHeight) / 10);
    vTarget.z = fHeight;
     do
        llSetPos( vTarget );
    while( --iCounter );
}
}


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         FindGroundOrWater();
         FindGroundOrWater();
     }
     }
}</lsl>
}</source>
|helpers
|helpers
|also_functions=
|also_functions=

Latest revision as of 10:22, 22 January 2015

Summary

Function: float llGround( vector offset );
0.0 Forced Delay
10.0 Energy

Returns a float that is the ground height directly below the prim position + offset

• vector offset offset relative to the prim's position and expressed in local coordinates

The requested position needs to be in the same region. Only the x and y coordinates in offset are important, the z component is ignored.

Examples

// Makes the object land on ground or on water
 
FindGroundOrWater()
{
    vector vTarget = llGetPos();
    vTarget.z = llGround( ZERO_VECTOR );
    float fWaterLevel = llWater( ZERO_VECTOR );
    if( vTarget.z < fWaterLevel )
        vTarget.z = fWaterLevel;
    llSetRegionPos(vTarget);
}

default
{
    touch_start(integer total_number)
    {
        FindGroundOrWater();
    }
}

See Also

Functions

•  llGroundContour Gets the ground contour
•  llGroundNormal Gets the ground normal
•  llGroundSlope Gets the ground slope
•  llEdgeOfWorld Returns existence of neighboring sims

Deep Notes

Signature

function float llGround( vector offset );