butterfly improvements and '=' fix

init.lua

@@ -8,11 +8,11 @@ dofile(minetest.get_modpath("dmobs").."/api.lua")
 
 -- Enable dragons (disable to remove tamed dragons and dragon bosses)
 dmobs.dragons = minetest.setting_getbool("dmobs.dragons") 
-if dmobs.dragons = nil then 
+if dmobs.dragons == nil then 
 dmobs.dragons = true
 end
 dmobs.regulars = minetest.setting_getbool("dmobs.regulars")
-if dmobs.regulars = nil then
+if dmobs.regulars == nil then
 dmobs.regulars = true
 end
 

mobs/butterfly.lua

@@ -6,25 +6,30 @@ minetest.register_abm({
 	interval = 10.0,
 	chance = 10,
 	action = function(pos, node, active_object_count, active_object_count_wider)
-		minetest.env:add_entity({x=pos.x,y=pos.y,z=pos.z}, "dmobs:butterfly")
+		minetest.env:add_entity({x=pos.x,y=pos.y+0.3,z=pos.z}, "dmobs:butterfly")
 	end
 })
 
 minetest.register_entity("dmobs:butterfly", {
-	visual = "sprite",
+	visual = "mesh",
+	mesh = "butterfly.b3d",
 	physical = true,
 	textures = {"dmobs_butterfly.png",},
-	visual_size = {x=0.2, y=0.2},
+	visual_size = {x=0.3, y=0.3},
 	on_activate = function(self)
 		num = math.random(1,4)
 		self.object:set_properties({textures = {"dmobs_butterfly"..num..".png",},})
-		minetest.after(5, function()
+		self.object:set_animation({x=1, y=10}, 20, 0)
+		self.object:setyaw(math.pi+num)
+		minetest.after(10, function()
 		self.object:remove()
 		end)
 	end,
 	on_step = function(self)
 		local pos = self.object:getpos()
 		local vec = self.object:getvelocity()
+		local num = math.random(-math.pi, math.pi)
+		self.object:setyaw(math.pi+num)
 		self.object:setvelocity({x=-math.sin(12*pos.y), y=math.cos(12*pos.x), z=-math.sin(12*pos.y)})
 		self.object:setacceleration({x=-math.sin(6*vec.y), y=math.cos(6*vec.x), z=-math.sin(6*vec.y)})
 	end,