From 81e2f0082ee2c5b3584135467c94111565a776b1 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 13 Mar 2021 18:57:07 +0000
Subject: Add generic middle classes LinkStraight and LinkCurve

---
 game/network/link.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'game/network/link.h')

diff --git a/game/network/link.h b/game/network/link.h
index a174275..16ae5f7 100644
--- a/game/network/link.h
+++ b/game/network/link.h
@@ -4,6 +4,7 @@
 #include <array>
 #include <glm/glm.hpp>
 #include <location.hpp>
+#include <maths.h>
 #include <memory>
 #include <special_members.hpp>
 #include <utility>
@@ -50,9 +51,42 @@ public:
 
 	std::array<End, 2> ends;
 	float length;
+
+protected:
+	[[nodiscard]] virtual glm::vec3
+	vehiclePositionOffset() const
+	{
+		return {};
+	}
 };
 
 bool operator<(const glm::vec3 & a, const glm::vec3 & b);
 bool operator<(const Node & a, const Node & b);
 
+class LinkStraight : public virtual Link {
+public:
+	LinkStraight() = default;
+	inline ~LinkStraight() override = 0;
+	NO_COPY(LinkStraight);
+	NO_MOVE(LinkStraight);
+
+	[[nodiscard]] Location positionAt(float dist, unsigned char start) const override;
+};
+LinkStraight::~LinkStraight() = default;
+
+class LinkCurve : public virtual Link {
+public:
+	inline ~LinkCurve() override = 0;
+	LinkCurve(glm::vec3, float, Arc);
+	NO_COPY(LinkCurve);
+	NO_MOVE(LinkCurve);
+
+	[[nodiscard]] Location positionAt(float dist, unsigned char start) const override;
+
+	glm::vec3 centreBase;
+	float radius;
+	Arc arc;
+};
+LinkCurve::~LinkCurve() = default;
+
 #endif
-- 
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