From 4d922d9edf9938320643c5d8deb519bd835ccf64 Mon Sep 17 00:00:00 2001
From: GuyLiner <no-reply@example.com>
Date: Sat, 4 Feb 2023 23:21:33 -0500
Subject: [PATCH] Added conditional based on existing fire damage conditional
 that will apply fire damage to a mob standing on top of a magma node that
 belongs to the "fire" group. The magma node has also been added to the fire
 group, making it so that standing on the node will do damage to the mob.

In official Minecraft, magma blocks just do fire damage without the fire animation.
Source: https://minecraft.fandom.com/wiki/Magma_Block
---
 mods/ENTITIES/mcl_mobs/physics.lua | 13 +++++++++++++
 mods/ITEMS/mcl_nether/init.lua     |  2 +-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/mods/ENTITIES/mcl_mobs/physics.lua b/mods/ENTITIES/mcl_mobs/physics.lua
index c7ea98c57..0c908b639 100644
--- a/mods/ENTITIES/mcl_mobs/physics.lua
+++ b/mods/ENTITIES/mcl_mobs/physics.lua
@@ -644,6 +644,7 @@ function mob_class:do_env_damage()
 	end
 
 	local nodef = minetest.registered_nodes[self.standing_in]
+	local nodef2 = minetest.registered_nodes[self.standing_on]
 
 	-- rain
 	if self.rain_damage > 0 then
@@ -675,7 +676,19 @@ function mob_class:do_env_damage()
 				return true
 			end
 		end
+	-- magma damage
+	elseif self.fire_damage > 0
+	and (nodef2.groups.fire) then
 
+		if self.fire_damage ~= 0 then
+
+			self.health = self.health - self.fire_damage
+
+			if self:check_for_death("fire", {type = "environment",
+					pos = pos, node = self.standing_in}) then
+				return true
+			end
+		end	
 	-- lava damage
 	elseif self.lava_damage > 0
 	and (nodef.groups.lava) then
diff --git a/mods/ITEMS/mcl_nether/init.lua b/mods/ITEMS/mcl_nether/init.lua
index 3f63c4333..548bd90d5 100644
--- a/mods/ITEMS/mcl_nether/init.lua
+++ b/mods/ITEMS/mcl_nether/init.lua
@@ -130,7 +130,7 @@ minetest.register_node("mcl_nether:magma", {
 	is_ground_content = true,
 	light_source = 3,
 	sunlight_propagates = false,
-	groups = {pickaxey=1, building_block=1, material_stone=1},
+	groups = {pickaxey=1, building_block=1, material_stone=1, fire=1},
 	sounds = mcl_sounds.node_sound_stone_defaults(),
 	-- From walkover mod
 	on_walk_over = function(loc, nodeiamon, player)