From 0f295ec4a94b25920d4ac1e107cfc469a70c8455 Mon Sep 17 00:00:00 2001
From: orwell96 <orwell@bleipb.de>
Date: Tue, 20 Nov 2018 12:37:34 +0100
Subject: Fix discouple positioning when wagon was just loaded

---
 advtrains/wagons.lua | 48 ++++++++++++++++++++++++------------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

(limited to 'advtrains/wagons.lua')

diff --git a/advtrains/wagons.lua b/advtrains/wagons.lua
index c4210be..040400c 100644
--- a/advtrains/wagons.lua
+++ b/advtrains/wagons.lua
@@ -349,30 +349,6 @@ function wagon:on_step(dtime)
 			end
 		end
 		
-		--DisCouple
-		if data.pos_in_trainparts and data.pos_in_trainparts>1 then
-			if train.velocity==0 then
-				if not self.discouple or not self.discouple.object:getyaw() then
-					atprint(self.id,"trying to spawn discouple")
-					local yaw = self.object:getyaw()
-					local flipsign=data.wagon_flipped and -1 or 1
-					local dcpl_pos = vector.add(pos, {y=0, x=-math.sin(yaw)*self.wagon_span*flipsign, z=math.cos(yaw)*self.wagon_span*flipsign})
-					local object=minetest.add_entity(dcpl_pos, "advtrains:discouple")
-					if object then
-						local le=object:get_luaentity()
-						le.wagon=self
-						--box is hidden when attached, so unuseful.
-						--object:set_attach(self.object, "", {x=0, y=0, z=self.wagon_span*10}, {x=0, y=0, z=0})
-						self.discouple=le
-					end
-				end
-			else
-				if self.discouple and self.discouple.object:getyaw() then
-					self.discouple.object:remove()
-					atprint(self.id," removing discouple")
-				end
-			end
-		end
 		--for path to be available. if not, skip step
 		if not train.path or train.no_step then
 			self.object:setvelocity({x=0, y=0, z=0})
@@ -448,6 +424,30 @@ function wagon:on_step(dtime)
 			end
 		end
 		
+		--DisCouple
+		-- FIX: Need to do this after the yaw calculation
+		if data.pos_in_trainparts and data.pos_in_trainparts>1 then
+			if train.velocity==0 then
+				if not self.discouple or not self.discouple.object:getyaw() then
+					atprint(self.id,"trying to spawn discouple")
+					local dcpl_pos = vector.add(pos, {y=0, x=-math.sin(yaw)*self.wagon_span, z=math.cos(yaw)*self.wagon_span})
+					local object=minetest.add_entity(dcpl_pos, "advtrains:discouple")
+					if object then
+						local le=object:get_luaentity()
+						le.wagon=self
+						--box is hidden when attached, so unuseful.
+						--object:set_attach(self.object, "", {x=0, y=0, z=self.wagon_span*10}, {x=0, y=0, z=0})
+						self.discouple=le
+					end
+				end
+			else
+				if self.discouple and self.discouple.object:getyaw() then
+					self.discouple.object:remove()
+					atprint(self.id," removing discouple")
+				end
+			end
+		end
+		
 		--FIX: use index of the wagon, not of the train.
 		local velocity = train.velocity
 		local acceleration = (train.acceleration or 0)
-- 
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