From e118b1f5d8071460e3a9d4d731c6d69221f785dc Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sat, 6 Mar 2021 19:44:58 +0000
Subject: Carve up the mess in game/vehicles

---
 game/vehicles/railloco.cpp | 146 ---------------------------------------------
 1 file changed, 146 deletions(-)
 delete mode 100644 game/vehicles/railloco.cpp

(limited to 'game/vehicles/railloco.cpp')

diff --git a/game/vehicles/railloco.cpp b/game/vehicles/railloco.cpp
deleted file mode 100644
index 6745c8f..0000000
--- a/game/vehicles/railloco.cpp
+++ /dev/null
@@ -1,146 +0,0 @@
-#include "railloco.h"
-#include "gfx/gl/shader.h"
-#include "gfx/models/obj.h"
-#include "gfx/models/texture.h"
-#include <algorithm>
-#include <array>
-#include <cache.h>
-#include <filesystem>
-#include <functional>
-#include <glm/glm.hpp>
-#include <iterator>
-#include <lib/resource.h>
-#include <location.hpp>
-#include <map>
-#include <maths.h>
-#include <memory>
-#include <random>
-#include <set>
-#include <utility>
-#include <vector>
-
-RailVehicleClass::RailVehicleClass(const std::string & name) :
-	RailVehicleClass {std::make_unique<ObjParser>(Resource::mapPath(name + ".obj")),
-			Texture::cachedTexture.get(Resource::mapPath(name + ".png"))}
-{
-}
-
-RailVehicleClass::RailVehicleClass(std::unique_ptr<ObjParser> o, std::shared_ptr<Texture> t) : texture {std::move(t)}
-{
-	wheelBase = bogieOffset(*o);
-	length = objectLength(*o);
-	const auto m = o->createMeshes();
-	bodyMesh = m.at("Body");
-	bogies[0] = m.at("Bogie1");
-	bogies[1] = m.at("Bogie2");
-}
-
-void
-RailVehicleClass::render(const Shader & shader, const Location & location, const std::array<Location, 2> & bl) const
-{
-	texture->Bind();
-	for (auto b = 0U; b < bogies.size(); ++b) {
-		shader.setModel(bl[b]);
-		bogies[b]->Draw();
-	}
-	shader.setModel(location);
-	bodyMesh->Draw();
-}
-
-float
-RailVehicleClass::bogieOffset(ObjParser & o)
-{
-	float wheelBase {0};
-	// offset bogie positions so they can be set directly
-	for (auto & object : o.objects) { // bogie object index
-		if (!object.first.starts_with("Bogie")) {
-			continue;
-		}
-		std::set<std::pair<float, int>> vertexIds;
-		for (const auto & face : object.second) {
-			for (const auto & faceElement : face) {
-				vertexIds.emplace(o.vertices[faceElement.x - 1].z, faceElement.x - 1);
-			}
-		}
-		const auto offset = (vertexIds.begin()->first + vertexIds.rbegin()->first) / 2;
-		for (const auto & v : vertexIds) {
-			o.vertices[v.second].z -= offset;
-		}
-		wheelBase += std::abs(offset);
-	}
-	return wheelBase;
-}
-
-float
-RailVehicleClass::objectLength(ObjParser & o)
-{
-	const auto mme = std::minmax_element(o.vertices.begin(), o.vertices.end(), [](const auto & v1, const auto & v2) {
-		return v1.z < v2.z;
-	});
-	return mme.second->z - mme.first->z;
-}
-
-void
-RailVehicle::render(const Shader & shader) const
-{
-	rvClass->render(shader, location, bogies);
-}
-
-void
-Train::move(TickDuration dur)
-{
-	static std::mt19937 gen(std::random_device {}());
-	linkDist += dur.count() * speed;
-	auto curLink {linkHist.getCurrent()};
-	while (linkDist > curLink.first->length) {
-		const auto location = curLink.first->positionAt(curLink.first->length, curLink.second);
-		auto nexts {curLink.first->nexts[1 - curLink.second]};
-		auto last = std::remove_if(nexts.begin(), nexts.end(), [ang = location.rot.y](const Link::Next & n) {
-			return std::abs(normalize(n.first.lock()->ends[n.second].second - ang)) > 0.1F;
-		});
-		if (last != nexts.begin()) {
-			auto off = std::uniform_int_distribution<>(0, std::distance(nexts.begin(), last) - 1)(gen);
-			linkDist -= curLink.first->length;
-			curLink = linkHist.add(nexts[off].first, nexts[off].second);
-		}
-		else {
-			linkDist = curLink.first->length;
-			speed = 0;
-		}
-	}
-}
-
-void
-Train::render(const Shader & shader) const
-{
-	apply(&Renderable::render, shader);
-}
-
-Location
-Train::getBogiePosition(float linkDist, float dist) const
-{
-	float b2linkDist {};
-	const auto b2Link = linkHist.getAt(dist - linkDist, &b2linkDist);
-	return b2Link.first->positionAt(b2linkDist, b2Link.second);
-}
-
-void
-RailVehicle::move(const Train * t, float & trailBy)
-{
-	const auto overhang {(rvClass->length - rvClass->wheelBase) / 2};
-	const auto & b1Pos = bogies[0] = t->getBogiePosition(t->linkDist, trailBy += overhang);
-	const auto & b2Pos = bogies[1] = t->getBogiePosition(t->linkDist, trailBy += rvClass->wheelBase);
-	const auto diff = glm::normalize(b2Pos.pos - b1Pos.pos);
-	location.pos = (b1Pos.pos + b2Pos.pos) / 2.F;
-	location.rot = {-vector_pitch(diff), vector_yaw(diff), 0};
-	trailBy += 0.6F + overhang;
-}
-
-void
-Train::tick(TickDuration dur)
-{
-	move(dur);
-
-	float trailBy {0.F};
-	apply(&RailVehicle::move, this, std::ref(trailBy));
-}
-- 
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