LSL Wiki : llGetRegionFlags

integer llGetRegionFlags()

Returns a bitfield specifying the region flags (REGION_FLAG_*) for the region the object is in.

Flag	Hex	Value	Description
`REGION_FLAG_ALLOW_DAMAGE`	0x1	1	if a region is entirely damage enabled
`REGION_FLAG_FIXED_SUN`	0x10	16	if a region has a fixed sun position
`REGION_FLAG_BLOCK_TERRAFORM`	0x40	64	if a region terraforming disabled
`REGION_FLAG_SANDBOX`	0x100	256	if a region is a sandbox
`REGION_FLAG_DISABLE_COLLISIONS`	0x1000	4096	if a region has disabled collisions
`REGION_FLAG_DISABLE_PHYSICS`	0x4000	16384	if a region has disabled physics
`REGION_FLAG_BLOCK_FLY`	0x80000	524288	if a region blocks flying
`REGION_FLAG_ALLOW_DIRECT_TELEPORT`	0x100000	1048576	if a region allows direct teleports.
`REGION_FLAG_RESTRICT_PUSHOBJECT`	0x400000	4194304	if a region restricts `llPushObject`

Parcel settings may override the region's settings. llGetParcelFlags can be used to determine these settings on a parcel-by-parcel basis.

Example:

integer region_flags = llGetRegionFlags();
if (region_flags & REGION_FLAG_ALLOW_DAMAGE)
   llOwnerSay("This region is damage enabled!");

if (region_flags & REGION_FLAG_FIXED_SUN)
   llOwnerSay("This regions sun doesn't move!");

if (region_flags & REGION_FLAG_BLOCK_TERRAFORM)
   llOwnerSay("This region does not allow terraforming!");

if (region_flags & REGION_FLAG_SANDBOX)
   llOwnerSay("This region is a sandbox!");

if (region_flags & REGION_FLAG_DISABLE_COLLISIONS)
   llOwnerSay("This region currently blocks non-agent collisions!");

if (region_flags & REGION_FLAG_DISABLE_PHYSICS)
   llOwnerSay("This region currently blocks all physics!");

if (region_flags & REGION_FLAG_BLOCK_FLY)
   llOwnerSay("This region blocks flying!");

if (region_flags & REGION_FLAG_ALLOW_DIRECT_TELEPORT) {
   llOwnerSay("This region follows P2P rules!");
} else {
   llOwnerSay("This region uses a telehub!");
}

if (region_flags & REGION_FLAG_RESTRICT_PUSHOBJECT)
   llOwnerSay("This region restricts llPushObject!");

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