From 734a4d3bd13bd86d6a997286e51e0aab544c58ae Mon Sep 17 00:00:00 2001
From: Isidor Zeuner <minetest@quidecco.de>
Date: Wed, 21 Jun 2017 18:25:45 +0200
Subject: [PATCH] sphere conflict detection

---
 worldedit_commands/init.lua | 38 +++++++++++++++++++++++--------------
 1 file changed, 24 insertions(+), 14 deletions(-)

diff --git a/worldedit_commands/init.lua b/worldedit_commands/init.lua
index ebe537c..f511bf1 100644
--- a/worldedit_commands/init.lua
+++ b/worldedit_commands/init.lua
@@ -409,13 +409,6 @@ minetest.register_chatcommand("/mix", {
 })
 
 local check_replace = function(name, param)
-	if nil ~= area_protection.areas and not minetest.check_player_privs(name, {areas = true}) then
-		worldedit.player_notify(
-			name,
-			"check_replace not yet supported with area protection"
-		)
-		return nil
-	end
 	local found, _, searchnode, replacenode = param:find("^([^%s]+)%s+(.+)$")
 	if found == nil then
 		worldedit.player_notify(name, "invalid usage: " .. param)
@@ -463,18 +456,35 @@ minetest.register_chatcommand("/replaceinverse", {
 })
 
 local check_sphere = function(name, param)
-	if nil ~= area_protection.areas and not minetest.check_player_privs(name, {areas = true}) then
-		worldedit.player_notify(
-			name,
-			"check_sphere not yet supported with area protection"
-		)
-		return nil
-	end
 	local found, _, radius, nodename = param:find("^(%d+)%s+(.+)$")
 	if found == nil then
 		worldedit.player_notify(name, "invalid usage: " .. param)
 		return nil
 	end
+	if nil ~= area_protection.areas then
+		local pos1 = worldedit.pos1[name]
+		local allowed, conflicting = area_protection.areas:canInteractInArea(
+			{
+				x = pos1.x - radius,
+				y = pos1.y - radius,
+				z = pos1.z - radius,
+			},
+			{
+				x = pos1.x + radius,
+				y = pos1.y + radius,
+				z = pos1.z + radius,
+			},
+			name,
+			false
+		)
+		if false == allowed then
+			worldedit.player_notify(
+				name,
+				"sphere may conflict with non-owned region " .. conflicting
+			)
+			return nil
+		end
+	end
 	local node = get_node(name, nodename)
 	if not node then return nil end
 	return math.ceil((4 * math.pi * (tonumber(radius) ^ 3)) / 3) --volume of sphere