added dtime to drive function

api.txt

@@ -281,7 +281,7 @@ This function will detach the player currently riding a mob to an offset positio
     'offset' position table containing offset values
 
 
-mobs:drive(self, move_animation, stand_animation, can_fly)
+mobs:drive(self, move_animation, stand_animation, can_fly, dtime)
 
 This function allows an attached player to move the mob around and animate it at same time.
 
@@ -289,6 +289,7 @@ This function allows an attached player to move the mob around and animate it at
     'move_animation' string containing movement animation e.g. "walk"
     'stand_animation' string containing standing animation e.g. "stand"
     'can_fly' if true then jump and sneak controls will allow mob to fly up and down
+    'dtime' tick time used inside drive function
 
 
 Certain variables need to be set before using the above functions:
@@ -356,7 +357,7 @@ mobs:register_mob("mob_horse:horse", {
 
 		-- when riding mob call drive function to control
 		if self.driver then
-			mobs.drive(self, "walk", "stand", false)
+			mobs.drive(self, "walk", "stand", false, dtime)
 			return false -- skip rest of mob functions
 		end
 

mount.lua

@@ -18,6 +18,10 @@ local function node_is(pos)
 		return "air"
 	end
 
+	if minetest.get_item_group(node.name, "lava") ~= 0 then
+		return "lava"
+	end
+
 	if minetest.get_item_group(node.name, "liquid") ~= 0 then
 		return "liquid"
 	end
@@ -155,7 +159,7 @@ function mobs.detach(player, offset)
 end
 
 
-function mobs.drive(entity, moving_anim, stand_anim, can_fly)
+function mobs.drive(entity, moving_anim, stand_anim, can_fly, dtime)
 
 	local rot_steer, rot_view = math.pi/2, 0
 
@@ -283,7 +287,27 @@ function mobs.drive(entity, moving_anim, stand_anim, can_fly)
 			new_acce.y = 0
 		end
 
-	elseif ni == "liquid" then
+	elseif ni == "liquid" or ni == "lava" then
+
+		if ni == "lava" and entity.lava_damage ~= 0 then
+
+			entity.lava_counter = (entity.lava_counter or 0) + dtime
+
+			if entity.lava_counter > 1 then
+
+				minetest.sound_play("default_punch", {
+					object = entity.object,
+					max_hear_distance = 5
+				})
+
+				entity.object:punch(entity.object, 1.0, {
+					full_punch_interval = 1.0,
+					damage_groups = {fleshy = entity.lava_damage}
+				}, nil)
+
+				entity.lava_counter = 0
+			end
+		end
 
 		if entity.terrain_type == 2
 		or entity.terrain_type == 3 then
@@ -309,7 +333,7 @@ function mobs.drive(entity, moving_anim, stand_anim, can_fly)
 				end
 			end
 		else
-			v = v*0.25
+			v = v * 0.25
 		end
 --	elseif ni == "walkable" then
 --		v = 0