From d1ce8ca2ecced047eb515ebdf98b85bf166725ee Mon Sep 17 00:00:00 2001
From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 24 Jan 2023 15:01:17 +0200
Subject: [PATCH] Add a transform propagator to stages by default

This is possible now that system dependencies have been implemented.
---
 examples/bassteroids/source/bassteroids.cpp | 2 --
 source/game/director.cpp                    | 8 +++++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/examples/bassteroids/source/bassteroids.cpp b/examples/bassteroids/source/bassteroids.cpp
index 5e9d929..e443d5e 100644
--- a/examples/bassteroids/source/bassteroids.cpp
+++ b/examples/bassteroids/source/bassteroids.cpp
@@ -2,7 +2,6 @@
 #include <msp/game/root.h>
 #include <msp/game/stage.h>
 #include <msp/game/transform.h>
-#include <msp/game/transformpropagator.h>
 #include "controls.h"
 #include "damagedealer.h"
 #include "gamecontroller.h"
@@ -31,7 +30,6 @@ Bassteroids::Bassteroids(int, char **):
 	game_stage.add_system<GameController>();
 	game_stage.add_system<Physics>();
 	game_stage.add_system<DamageDealer>();
-	game_stage.add_system<Game::TransformPropagator>();
 	player_controller = &game_stage.add_system<PlayerController>();
 
 	event_observer.observe<GameView::Events::PlayerArrived>([this](auto &e){ player_arrived(e); });
diff --git a/source/game/director.cpp b/source/game/director.cpp
index 31d20a9..ef906c3 100644
--- a/source/game/director.cpp
+++ b/source/game/director.cpp
@@ -4,6 +4,7 @@
 #include "component.h"
 #include "entity.h"
 #include "stage.h"
+#include "transformpropagator.h"
 
 using namespace std;
 
@@ -28,9 +29,10 @@ Director::~Director()
 
 Stage &Director::create_stage()
 {
-	stages.emplace_back(std::make_unique<Stage>(std::ref(reflector), std::ref(resources)));
-	event_source.emit<Events::StageCreated>(std::ref(*stages.back()));
-	return *stages.back();
+	Stage &stage = *stages.emplace_back(std::make_unique<Stage>(std::ref(reflector), std::ref(resources)));
+	stage.add_system<TransformPropagator>();
+	event_source.emit<Events::StageCreated>(std::ref(stage));
+	return stage;
 }
 
 void Director::activate_stage(Stage &s)
-- 
2.45.2