mobs.register_component("walk", {
	action = function(self, params, def)
		if self.destination then	
			local destination = self.destination
			if self.destination and self.destination.is_player and self.destination:is_player() then
				destination = self.destination:getpos()
			end
			if not(destination) then
				return 0
			end

			local pos = self.object:getpos()
			if(vector.distance(destination, pos) < (params.distance or 3)) then
				self.object:setvelocity(vector.new(0, params.gravity or def.gravity or -9, 0))
				return 2
			end

			local velocity = vector.multiply(vector.direction(pos, destination), params.speed or 3)
			velocity.y = (params.gravity or def.gravity or -9.2)
			self.object:setvelocity(velocity)

			local yaw = math.atan(velocity.z/velocity.x)+math.pi/2
			if velocity.x + pos.x > pos.x then
				yaw = yaw + math.pi
			end

			self.object:setyaw(yaw)
			return 1
		else
			self.object:setvelocity(vector.new(0, params.gravity or def.gravity or -9, 0))
		end
		return 0
	end
})

mobs.register_component("teleport", {
	action = function(self, params, def)
		if self.destination then	
			local destination = self.destination
			if self.destination and self.destination.is_player and self.destination:is_player() then
				destination = self.destination:getpos()
			end
			if not(destination) then
				return 0
			end

			local pos = self.object:getpos()
			local distance = (params.distance or 0)
			if vector.distance(pos,destination) > distance then
				local x = vector.new(math.random(-3, 3),2,math.random(-3, 3))
				self.object:setpos(vector.add(destination, x))
				return 3
			else
				return 0
			end
		end
		return 0
	end
})

mobs.register_component("find_player", {
	action = function(self, params, def)
		local all_objects = minetest.get_objects_inside_radius(self.object:getpos(), params.range or def.range or 10)
		for _,obj in ipairs(all_objects) do
			if obj:is_player() then
				self.destination = obj
				return 1
			end
		end
		return 0
	end
})

mobs.register_component("attack", {
	action = function(self, params, def)
		if self.destination and self.destination.is_player and self.destination:is_player() and 
		   vector.distance(self.destination:getpos(), self.object:getpos()) < (params.range or def.range or 3) then
			if minetest.line_of_sight(vector.add(self.object:getpos(), vector.new(0, 0.5, 0)),
			   vector.add(self.destination:getpos(), vector.new(0, 0.5, 0)), 1) then
				self.destination:punch(self.object, 10, params.damage or def.damage or def.dmg or 3, nil)
				return 1
			end
		end
		return 0
	end
})

mobs.register_component("randomize_destination", {
	action = function(self, params, def)
		local pos = self.object:getpos()
		self.destination = vector.add(pos, vector.new(math.random(-10, 10), math.random(-10, 10), math.random(-10, 10)))
		return 1
	end
})

mobs.register_component("particlespawner", {
	action = function(self, params, def)
		local pos = self.object:getpos()

		if(params.spawn_at_destination) then
			local destination = self.destination
			if self.destination and self.destination.is_player and self.destination:is_player() then
				destination = self.destination:getpos()
			end
			if not(destination) then
				return 0
			end
			pos = destination
		end

		if not(pos) then
			return 0
		end

		if params.spawner then
			if not(params.spawner.minpos) or not(params.spawner.maxpos) then
				return 0
			end
			params.spawner.minpos = vector.add(params.spawner.minpos, pos)
			params.spawner.maxpos = vector.add(params.spawner.maxpos, pos)
			minetest.add_particlespawner(params.spawner)
		else
			local range = params.range or 2
			local time = params.time or 1
			local amount = params.amount or 30

			local minsize = params.minsize or 1
			local maxsize = params.maxsize or 1

			local collisiondetection = params.collisiondetection or false
			local texture = params.texture

			local minvel = params.minvel or {x=-2, y=-2, z=-2}
			local maxvel = params.maxvel or {x=2, y=2, z=2}

			minetest.add_particlespawner({
				amount = amount,
				time = time,
				minpos = {x=pos.x-range, y=pos.y-range, z=pos.z-range},
				maxpos = {x=pos.x+range, y=pos.y+range, z=pos.z+range},
				minvel = minvel,
				maxvel = maxvel,
				minacc = {x=0, y=0, z=0},
				maxacc = {x=0, y=0, z=0},
				minexptime = time,
				maxexptime = time,
				minsize = minsize,
				maxsize = maxsize,
				collisiondetection = collisiondetection,
				vertical = false,
				texture = texture,
			})
		end

		return 1
	end
})