llModifyLand(integer action, integer size)

This is a general-purpose terraforming function used to modify the shape of land. It will not work while the agent is offline or outside of the sim containing the script.

action	Value	Description
LAND_LEVEL	0	Levels the terrain with each call, raising it up to the current height of the object's center (even if already level). To level terrain at a position lower than the current ground level, the terrain needs to be lowered using LAND_LOWER first, because the object cannot be placed under ground with scripted functions (llSetPos).
LAND_RAISE	1	Raises the terrain with each call, up to the current height of the object's center.
LAND_LOWER	2	Lowers the terrain with each call, down to zero height.
LAND_SMOOTH	3	Smooths the terrain.
LAND_NOISE	4	Randomizes (adds noise to) the terrain.
LAND_REVERT	5	Revert terrain to state.

size	Value	Description
LAND_SMALL_BRUSH	1	small brush (2m x 2m)
LAND_MEDIUM_BRUSH	2	medium brush (4m x 4m)
LAND_LARGE_BRUSH	3	large brush (8m x 8m)

To measure the height of the ground, use llGround.

Notes:

• There is no LAND_TINY_BRUSH constant. That means land cannot be modifed at the highest possible resolution. This is a shortcoming of the llModifyLand function. Don't like it? Complain to the Lindens.
• This function does not work in child prims in a link set.
• If you use llModifyLand(LAND_RAISE, brushsize) so that the land raises over the center of the object, then the object will "fall off the edge of the world", and get returned to your inventory's 'Lost and Found' folder. To avoid this, put an llDie() after the llModifyLand calls and hope it gets called before the object is detected as being under the ground.

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Functions | Constants | Land