From 81e2f0082ee2c5b3584135467c94111565a776b1 Mon Sep 17 00:00:00 2001 From: Dan Goodliffe Date: Sat, 13 Mar 2021 18:57:07 +0000 Subject: Add generic middle classes LinkStraight and LinkCurve --- game/network/link.cpp | 28 ++++++++++++++++++++++++++++ game/network/link.h | 34 ++++++++++++++++++++++++++++++++++ game/network/rail.cpp | 31 ++++++------------------------- game/network/rail.h | 23 +++++++++++------------ 4 files changed, 79 insertions(+), 37 deletions(-) (limited to 'game') diff --git a/game/network/link.cpp b/game/network/link.cpp index ad09341..e45126f 100644 --- a/game/network/link.cpp +++ b/game/network/link.cpp @@ -1,9 +1,13 @@ #include "link.h" #include +#include +#include #include Link::Link(End a, End b, float l) : ends {{std::move(a), std::move(b)}}, length {l} { } +LinkCurve::LinkCurve(glm::vec3 c, float r, Arc a) : centreBase {c}, radius {r}, arc {std::move(a)} { } + bool operator<(const glm::vec3 & a, const glm::vec3 & b) { @@ -16,3 +20,27 @@ operator<(const Node & a, const Node & b) { return a.pos < b.pos; } + +Location +LinkStraight::positionAt(float dist, unsigned char start) const +{ + const auto es {std::make_pair(ends[start].node.get(), ends[1 - start].node.get())}; + const auto diff {es.second->pos - es.first->pos}; + const auto dir {glm::normalize(diff)}; + return Location {es.first->pos + vehiclePositionOffset() + dir * dist, {-vector_pitch(dir), vector_yaw(dir), 0}}; +} + +Location +LinkCurve::positionAt(float dist, unsigned char start) const +{ + static constexpr std::array dirOffset {half_pi, -half_pi}; + const auto frac {dist / length}; + const auto es {std::make_pair(ends[start].node.get(), ends[1 - start].node.get())}; + const auto as {std::make_pair(arc[start], arc[1 - start])}; + const auto ang {as.first + ((as.second - as.first) * frac)}; + const auto relPos {!sincosf(ang) * radius}; + const auto relClimb {vehiclePositionOffset() + + glm::vec3 {0, -centreBase.y + es.first->pos.y + ((es.second->pos.y - es.first->pos.y) * frac), 0}}; + const auto pitch {vector_pitch({0, (es.first->pos.y - es.second->pos.y) / length, 0})}; + return Location {relPos + relClimb + centreBase, {pitch, normalize(ang + dirOffset[start]), 0}}; +} 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 #include #include +#include #include #include #include @@ -50,9 +51,42 @@ public: std::array 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 diff --git a/game/network/rail.cpp b/game/network/rail.cpp index 0ef58d7..0cb2725 100644 --- a/game/network/rail.cpp +++ b/game/network/rail.cpp @@ -7,7 +7,6 @@ #include // IWYU pragma: keep #include #include -#include #include #include #include @@ -123,7 +122,7 @@ round_sleepers(const float v) RailLinkStraight::RailLinkStraight(const NodePtr & a, const NodePtr & b) : RailLinkStraight(a, b, b->pos - a->pos) { } RailLinkStraight::RailLinkStraight(NodePtr a, NodePtr b, const glm::vec3 & diff) : - RailLink({std::move(a), vector_yaw(diff)}, {std::move(b), vector_yaw(-diff)}, glm::length(diff)) + Link({std::move(a), vector_yaw(diff)}, {std::move(b), vector_yaw(-diff)}, glm::length(diff)) { std::vector vertices; vertices.reserve(2 * railCrossSection.size()); @@ -139,24 +138,15 @@ RailLinkStraight::RailLinkStraight(NodePtr a, NodePtr b, const glm::vec3 & diff) mesh = defaultMesh(vertices); } -Location -RailLinkStraight::positionAt(float dist, unsigned char start) const -{ - const auto es {std::make_pair(ends[start].node.get(), ends[1 - start].node.get())}; - const auto diff {es.second->pos - es.first->pos}; - const auto dir {glm::normalize(diff)}; - return Location {es.first->pos + RAIL_HEIGHT + dir * dist, {-vector_pitch(dir), vector_yaw(dir), 0}}; -} - RailLinkCurve::RailLinkCurve(const NodePtr & a, const NodePtr & b, glm::vec2 c) : RailLinkCurve(a, b, {c.x, a->pos.y, c.y}, {!c, a->pos, b->pos}) { } RailLinkCurve::RailLinkCurve(const NodePtr & a, const NodePtr & b, glm::vec3 c, const Arc arc) : - RailLink({a, normalize(arc.first + half_pi)}, {b, normalize(arc.second - half_pi)}, + Link({a, normalize(arc.first + half_pi)}, {b, normalize(arc.second - half_pi)}, (glm::length(a->pos - c)) * arc_length(arc)), - centreBase(c), radius {glm::length(ends[0].node->pos - centreBase)}, arc {arc} + LinkCurve {c, glm::length(ends[0].node->pos - c), arc} { const auto & e0p {ends[0].node->pos}; const auto & e1p {ends[1].node->pos}; @@ -178,17 +168,8 @@ RailLinkCurve::RailLinkCurve(const NodePtr & a, const NodePtr & b, glm::vec3 c, mesh = defaultMesh(vertices); } -Location -RailLinkCurve::positionAt(float dist, unsigned char start) const +glm::vec3 +RailLink::vehiclePositionOffset() const { - static constexpr std::array dirOffset {half_pi, -half_pi}; - const auto frac {dist / length}; - const auto es {std::make_pair(ends[start].node.get(), ends[1 - start].node.get())}; - const auto as {std::make_pair(arc[start], arc[1 - start])}; - const auto ang {as.first + ((as.second - as.first) * frac)}; - const auto relPos {!sincosf(ang) * radius}; - const auto relClimb {RAIL_HEIGHT - + glm::vec3 {0, -centreBase.y + es.first->pos.y + ((es.second->pos.y - es.first->pos.y) * frac), 0}}; - const auto pitch {vector_pitch({0, (es.first->pos.y - es.second->pos.y) / length, 0})}; - return Location {relPos + relClimb + centreBase, {pitch, normalize(ang + dirOffset[start]), 0}}; + return RAIL_HEIGHT; } diff --git a/game/network/rail.h b/game/network/rail.h index 3ecc59f..bfbb928 100644 --- a/game/network/rail.h +++ b/game/network/rail.h @@ -7,46 +7,45 @@ #include "link.h" #include "network.h" #include -#include -#include #include #include +#include class Shader; class Vertex; +struct Arc; // A piece of rail track -class RailLink : public Link, public Renderable { +class RailLink : public virtual Link, public Renderable { public: - using Link::Link; - + RailLink() = default; + inline ~RailLink() override = 0; void render(const Shader &) const override; + NO_COPY(RailLink); + NO_MOVE(RailLink); protected: + [[nodiscard]] glm::vec3 vehiclePositionOffset() const override; [[nodiscard]] static MeshPtr defaultMesh(const std::span vertices); MeshPtr mesh; }; +RailLink::~RailLink() = default; -class RailLinkStraight : public RailLink { +class RailLinkStraight : public RailLink, public LinkStraight { public: RailLinkStraight(const NodePtr &, const NodePtr &); - [[nodiscard]] Location positionAt(float dist, unsigned char start) const override; private: RailLinkStraight(NodePtr, NodePtr, const glm::vec3 & diff); }; -class RailLinkCurve : public RailLink { +class RailLinkCurve : public RailLink, public LinkCurve { public: RailLinkCurve(const NodePtr &, const NodePtr &, glm::vec2); - [[nodiscard]] Location positionAt(float dist, unsigned char start) const override; private: RailLinkCurve(const NodePtr &, const NodePtr &, glm::vec3, const Arc); - glm::vec3 centreBase; - float radius; - Arc arc; }; class RailLinks : public NetworkOf, public WorldObject { -- cgit v1.2.3