7 files changed, 22 insertions, 13 deletions
diff --git a/game/network/link.h b/game/network/link.h
index 3fabf05..d4ae4c6 100644
--- a/game/network/link.h
+++ b/game/network/link.h
@@ -37,7 +37,7 @@ public:
 	NO_COPY(Link);
 	NO_MOVE(Link);
 
-	virtual Transform positionAt(float dist, unsigned char start) const = 0;
+	[[nodiscard]] virtual Transform positionAt(float dist, unsigned char start) const = 0;
 
 	std::array<End, 2> ends;
 	float length;
diff --git a/game/network/rail.cpp b/game/network/rail.cpp
index 56feec0..1f3cc01 100644
--- a/game/network/rail.cpp
+++ b/game/network/rail.cpp
@@ -8,7 +8,7 @@
 #include <gfx/models/texture.h>
 #include <gfx/models/vertex.hpp>
 #include <glm/gtx/transform.hpp>
-#include <glm/gtx/vector_angle.hpp>
+#include <initializer_list>
 #include <maths.h>
 #include <type_traits>
 #include <utility>
@@ -17,7 +17,7 @@ RailLinks::RailLinks() : texture {Texture::cachedTexture.get("rails.jpg")} { }
 void RailLinks::tick(TickDuration) { }
 
 void
-RailLinks::joinLinks(LinkPtr l) const
+RailLinks::joinLinks(const LinkPtr & l) const
 {
 	for (const auto & ol : links.objects) {
 		if (l != ol) {
diff --git a/game/network/rail.h b/game/network/rail.h
index 58c26c3..ac944f3 100644
--- a/game/network/rail.h
+++ b/game/network/rail.h
@@ -3,6 +3,7 @@
 
 #include "collection.hpp"
 #include "game/worldobject.h"
+#include "gfx/gl/transform.h"
 #include "gfx/models/mesh.h"
 #include "gfx/models/vertex.hpp"
 #include "gfx/renderable.h"
@@ -36,7 +37,7 @@ protected:
 class RailLinkStraight : public RailLink {
 public:
 	RailLinkStraight(const NodePtr &, const NodePtr &);
-	Transform positionAt(float dist, unsigned char start) const override;
+	[[nodiscard]] Transform positionAt(float dist, unsigned char start) const override;
 
 private:
 	RailLinkStraight(NodePtr, NodePtr, const glm::vec3 & diff);
@@ -45,7 +46,7 @@ private:
 class RailLinkCurve : public RailLink {
 public:
 	RailLinkCurve(const NodePtr &, const NodePtr &, glm::vec2);
-	Transform positionAt(float dist, unsigned char start) const override;
+	[[nodiscard]] Transform positionAt(float dist, unsigned char start) const override;
 
 private:
 	RailLinkCurve(const NodePtr &, const NodePtr &, glm::vec3, const Arc);
@@ -65,7 +66,7 @@ public:
 	{
 		const auto node1 = *nodes.insert(std::make_shared<Node>(a)).first;
 		const auto node2 = *nodes.insert(std::make_shared<Node>(b)).first;
-		auto l = links.create<T>(node1, node2, std::forward<Params>(params)...);
+		auto l {links.create<T>(node1, node2, std::forward<Params>(params)...)};
 		joinLinks(l);
 		return l;
 	}
@@ -76,7 +77,7 @@ private:
 	Nodes nodes;
 	void render(const Shader &) const override;
 	void tick(TickDuration elapsed) override;
-	void joinLinks(LinkPtr) const;
+	void joinLinks(const LinkPtr &) const;
 	std::shared_ptr<Texture> texture;
 };
 
diff --git a/game/vehicles/railloco.cpp b/game/vehicles/railloco.cpp
index baa9b81..54582c2 100644
--- a/game/vehicles/railloco.cpp
+++ b/game/vehicles/railloco.cpp
@@ -1,8 +1,12 @@
 #include "railloco.h"
-#include "game/vehicles/vehicle.h"
 #include "gfx/gl/transform.h"
+#include <algorithm>
+#include <array>
 #include <glm/glm.hpp>
 #include <maths.h>
+#include <memory>
+#include <utility>
+#include <vector>
 
 void
 RailLoco::tick(TickDuration dur)
@@ -27,4 +31,4 @@ RailLoco::tick(TickDuration dur)
 	location = link->positionAt(linkDist, linkDir);
 }
 
-Brush47::Brush47(LinkPtr l) : RailLoco(l, "brush47.obj", "brush47.png") { }
+Brush47::Brush47(const LinkPtr & l) : RailLoco(l, "brush47.obj", "brush47.png") { }
diff --git a/game/vehicles/railloco.h b/game/vehicles/railloco.h
index 05e3e48..833b661 100644
--- a/game/vehicles/railloco.h
+++ b/game/vehicles/railloco.h
@@ -1,3 +1,4 @@
+#include "game/network/link.h"
 #include "game/worldobject.h"
 #include "vehicle.h"
 #include <string>
@@ -10,5 +11,5 @@ public:
 
 class Brush47 : public RailLoco {
 public:
-	Brush47(LinkPtr p);
+	explicit Brush47(const LinkPtr & p);
 };
diff --git a/game/vehicles/vehicle.cpp b/game/vehicles/vehicle.cpp
index 4c4ac71..c12181f 100644
--- a/game/vehicles/vehicle.cpp
+++ b/game/vehicles/vehicle.cpp
@@ -1,6 +1,10 @@
 #include "vehicle.h"
+#include "game/network/link.h"
+#include <array>
+#include <memory>
+#include <utility>
 
-Vehicle::Vehicle(LinkPtr l, const std::string & obj, const std::string & tex) :
+Vehicle::Vehicle(const LinkPtr & l, const std::string & obj, const std::string & tex) :
 	Physical(l->ends.front().first->pos, obj, tex), link(l)
 {
 }
diff --git a/game/vehicles/vehicle.h b/game/vehicles/vehicle.h
index 01be6a6..cd2249d 100644
--- a/game/vehicles/vehicle.h
+++ b/game/vehicles/vehicle.h
@@ -4,12 +4,11 @@
 #include "game/physical.h"
 #include <game/network/link.h>
 #include <game/worldobject.h>
-#include <glm/glm.hpp>
 #include <string>
 
 class Vehicle : public WorldObject, public Physical {
 public:
-	Vehicle(LinkPtr link, const std::string & obj, const std::string & tex);
+	Vehicle(const LinkPtr & link, const std::string & obj, const std::string & tex);
 	LinkPtr link; // Which link are we travelling along
 	unsigned char linkDir {0}; // Starting end e0->e1 or e1->e0
 	float linkDist {0}; // distance long current link