From a19011b730ac6d770e3b42cde3a10961495a417d Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 20 Jan 2024 20:10:12 +0000
Subject: Implement basic network curve part shader

---
 game/network/rail.cpp | 7 ++++---
 game/network/rail.h   | 1 +
 2 files changed, 5 insertions(+), 3 deletions(-)

(limited to 'game/network')

diff --git a/game/network/rail.cpp b/game/network/rail.cpp
index efe4e2d..46c129b 100644
--- a/game/network/rail.cpp
+++ b/game/network/rail.cpp
@@ -155,8 +155,8 @@ RailLinkCurve::RailLinkCurve(NetworkLinkHolder<RailLinkCurve> & instances, const
 	Link({a, normalize(arc.first + half_pi)}, {b, normalize(arc.second - half_pi)},
 			glm::length(RelativePosition3D(a->pos - c)) * arc_length(arc)),
 	LinkCurve {c, glm::length(RelativePosition3D(ends[0].node->pos - c)), arc},
-	instance {instances.vertices.acquire(ends[0].node->pos, ends[1].node->pos, c, round_sleepers(length / 2000.F))}
-
+	instance {instances.vertices.acquire(ends[0].node->pos, ends[1].node->pos, c, round_sleepers(length / 2000.F),
+			half_pi - arc.first, half_pi - arc.second)}
 {
 	if (glGenVertexArrays) {
 		const auto & e0p {ends[0].node->pos};
@@ -198,7 +198,8 @@ template<> NetworkLinkHolder<RailLinkCurve>::NetworkLinkHolder()
 {
 	VertexArrayObject {vao}
 			.addAttribs<RailLinkCurve::Vertex, &RailLinkCurve::Vertex::a, &RailLinkCurve::Vertex::b,
-					&RailLinkCurve::Vertex::c, &RailLinkCurve::Vertex::textureRepeats>(vertices.bufferName());
+					&RailLinkCurve::Vertex::c, &RailLinkCurve::Vertex::textureRepeats, &RailLinkCurve::Vertex::aangle,
+					&RailLinkCurve::Vertex::bangle>(vertices.bufferName());
 }
 
 namespace {
diff --git a/game/network/rail.h b/game/network/rail.h
index b6a9ebe..39dfdc9 100644
--- a/game/network/rail.h
+++ b/game/network/rail.h
@@ -64,6 +64,7 @@ public:
 	struct Vertex {
 		GlobalPosition3D a, b, c;
 		float textureRepeats;
+		float aangle, bangle;
 	};
 
 private:
-- 
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