Add workaround to unload wagons that are too far away from players

1 files changed, 23 insertions, 1 deletions

diff --git a/advtrains/wagons.lua b/advtrains/wagons.lua
index 2b0833d..28a471a 100644
--- a/advtrains/wagons.lua
+++ b/advtrains/wagons.lua
@@ -14,6 +14,8 @@ advtrains.wagons = {}
 advtrains.wagon_prototypes = {}

 advtrains.wagon_objects = {}

 

+local unload_wgn_range = advtrains.wagon_load_range + 32

+

 local setting_show_ids = minetest.settings:get_bool("advtrains_show_ids")

 

 --

@@ -473,8 +475,29 @@ function wagon:on_step(dtime)
 			yaw=yaw+math.pi

 		end

 		

+		-- this timer runs off every 2 seconds.

 		self.updatepct_timer=(self.updatepct_timer or 0)-dtime

 		local updatepct_timer_elapsed = self.updatepct_timer<=0

+		

+		if updatepct_timer_elapsed then

+			--restart timer

+			self.updatepct_timer=2

+			-- perform checks that are not frequently needed

+			

+			-- unload entity if out of range (because relevant pr won't be merged in engine)

+			-- This is a WORKAROUND!

+			local outofrange = false

+			for _,p in pairs(minetest.get_connected_players()) do

+				if vector.distance(p:get_pos(),pos)>=unload_wgn_range then

+					outofrange = true

+				end

+			end

+			if outofrange then

+				--atdebug("wagon",self.id,"unloading (too far away)")

+				self.object:remove()

+			end

+		end

+		

 		if not self.old_velocity_vector 

 				or not vector.equals(velocityvec, self.old_velocity_vector)

 				or not self.old_acceleration_vector 

@@ -520,7 +543,6 @@ function wagon:on_step(dtime)
                 self.object:setyaw(yaw)

             end

 			

-			self.updatepct_timer=2

 			if self.update_animation then

 				self:update_animation(train.velocity, self.old_velocity)

 			end