From 8f85ca57f3a50569e1cd310652dd519a8fe5cb43 Mon Sep 17 00:00:00 2001
From: paramat <paramat@users.noreply.github.com>
Date: Sat, 27 Jan 2018 00:52:14 +0000
Subject: [PATCH] Intersects_protection(): Remove from Minetest Game

Add compatibility code with deprecation warning.
---
 mods/default/functions.lua | 40 --------------------------------------
 mods/default/legacy.lua    |  7 +++++++
 mods/default/trees.lua     |  2 +-
 3 files changed, 8 insertions(+), 41 deletions(-)

diff --git a/mods/default/functions.lua b/mods/default/functions.lua
index 20cf492a..d43ab7b9 100644
--- a/mods/default/functions.lua
+++ b/mods/default/functions.lua
@@ -497,46 +497,6 @@ minetest.register_abm({
 })
 
 
---
--- Checks if specified volume intersects a protected volume
---
-
-function default.intersects_protection(minp, maxp, player_name, interval)
-	-- 'interval' is the largest allowed interval for the 3D lattice of checks
-
-	-- Compute the optimal float step 'd' for each axis so that all corners and
-	-- borders are checked. 'd' will be smaller or equal to 'interval'.
-	-- Subtracting 1e-4 ensures that the max co-ordinate will be reached by the
-	-- for loop (which might otherwise not be the case due to rounding errors).
-	local d = {}
-	for _, c in pairs({"x", "y", "z"}) do
-		if maxp[c] > minp[c] then
-			d[c] = (maxp[c] - minp[c]) / math.ceil((maxp[c] - minp[c]) / interval) - 1e-4
-		elseif maxp[c] == minp[c] then
-			d[c] = 1 -- Any value larger than 0 to avoid division by zero
-		else -- maxp[c] < minp[c], print error and treat as protection intersected
-			minetest.log("error", "maxp < minp in 'default.intersects_protection()'")
-			return true
-		end
-	end
-
-	for zf = minp.z, maxp.z, d.z do
-		local z = math.floor(zf + 0.5)
-		for yf = minp.y, maxp.y, d.y do
-			local y = math.floor(yf + 0.5)
-			for xf = minp.x, maxp.x, d.x do
-				local x = math.floor(xf + 0.5)
-				if minetest.is_protected({x = x, y = y, z = z}, player_name) then
-					return true
-				end
-			end
-		end
-	end
-
-	return false
-end
-
-
 --
 -- Coral death near air
 --
diff --git a/mods/default/legacy.lua b/mods/default/legacy.lua
index 0669914c..17e30360 100644
--- a/mods/default/legacy.lua
+++ b/mods/default/legacy.lua
@@ -37,3 +37,10 @@ end
 
 -- Chests
 default.register_chest = default.chest.register_chest
+
+-- Check for a volume intersecting protection
+function default.intersects_protection(minp, maxp, player_name, interval)
+	minetest.log("warning", "default.intersects_protection() is " ..
+		"deprecated, use minetest.intersects_protection() instead.")
+	minetest.intersects_protection(minp, maxp, player_name, interval)
+end
diff --git a/mods/default/trees.lua b/mods/default/trees.lua
index 44176d77..2934330d 100644
--- a/mods/default/trees.lua
+++ b/mods/default/trees.lua
@@ -490,7 +490,7 @@ function default.sapling_on_place(itemstack, placer, pointed_thing,
 		return itemstack
 	end
 	-- Check tree volume for protection
-	if default.intersects_protection(
+	if minetest.intersects_protection(
 			vector.add(pos, minp_relative),
 			vector.add(pos, maxp_relative),
 			player_name,