From a32a8447028798ef05af33230fbcfa3195ab430c Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Mon, 8 Mar 2021 20:03:40 +0000
Subject: Initial commit of the orders/activities system

Has the main window provide some control over our test train
---
 game/vehicles/train.cpp   | 19 +++++++++++++++++++
 game/vehicles/train.h     |  7 ++++++-
 game/vehicles/vehicle.cpp |  6 ++++++
 game/vehicles/vehicle.h   |  7 ++++++-
 4 files changed, 37 insertions(+), 2 deletions(-)

(limited to 'game/vehicles')

diff --git a/game/vehicles/train.cpp b/game/vehicles/train.cpp
index e211f16..f7b5515 100644
--- a/game/vehicles/train.cpp
+++ b/game/vehicles/train.cpp
@@ -1,6 +1,7 @@
 #include "train.h"
 #include "game/vehicles/linkHistory.h"
 #include "game/vehicles/railVehicle.h"
+#include "game/vehicles/railVehicleClass.h"
 #include "gfx/renderable.h"
 #include "location.hpp"
 #include <algorithm>
@@ -53,8 +54,26 @@ Train::getBogiePosition(float linkDist, float dist) const
 void
 Train::tick(TickDuration dur)
 {
+	currentActivity->apply(this, dur);
 	move(dur);
 
 	float trailBy {0.F};
 	apply(&RailVehicle::move, this, std::ref(trailBy));
 }
+
+void
+Train::doActivity(const Go *, TickDuration dur)
+{
+	const auto maxSpeed = objects.front()->rvClass->maxSpeed;
+	if (speed != maxSpeed) {
+		speed += ((maxSpeed - speed) * dur.count());
+	}
+}
+
+void
+Train::doActivity(const Idle *, TickDuration dur)
+{
+	if (speed != 0.F) {
+		speed -= std::min(speed, 30.F * dur.count());
+	}
+}
diff --git a/game/vehicles/train.h b/game/vehicles/train.h
index 34a9d28..a7d4b1b 100644
--- a/game/vehicles/train.h
+++ b/game/vehicles/train.h
@@ -1,6 +1,9 @@
 #ifndef TRAIN_H
 #define TRAIN_H
 
+#include "game/activities/go.h" // IWYU pragma: keep
+#include "game/activities/idle.h" // IWYU pragma: keep
+#include "game/activity.h"
 #include "game/network/link.h"
 #include "game/worldobject.h"
 #include "railVehicle.h"
@@ -12,7 +15,7 @@
 
 class Shader;
 
-class Train : public Vehicle, public Collection<RailVehicle, false> {
+class Train : public Vehicle, public Collection<RailVehicle, false>, public Can<Go>, public Can<Idle> {
 public:
 	explicit Train(const LinkPtr & link, float linkDist = 0) : Vehicle {link, linkDist} { }
 
@@ -25,6 +28,8 @@ public:
 	void render(const Shader & shader) const override;
 
 	void tick(TickDuration elapsed) override;
+	void doActivity(const Go *, TickDuration) override;
+	void doActivity(const Idle *, TickDuration) override;
 
 	void move(TickDuration dur);
 	[[nodiscard]] Location getBogiePosition(float linkDist, float dist) const;
diff --git a/game/vehicles/vehicle.cpp b/game/vehicles/vehicle.cpp
index d98533e..d3cae1d 100644
--- a/game/vehicles/vehicle.cpp
+++ b/game/vehicles/vehicle.cpp
@@ -1,8 +1,14 @@
 #include "vehicle.h"
+#include "game/activity.h"
 #include "game/network/link.h"
+#include "game/objective.h"
+#include "game/objectives/freeroam.h"
+#include "game/orders.h"
 #include "game/vehicles/linkHistory.h"
 
 Vehicle::Vehicle(const LinkPtr & l, float ld) : linkDist {ld}
 {
 	linkHist.add(l, 0);
+	orders.create<FreeRoam>(&orders);
+	currentActivity = orders.current()->createActivity();
 }
diff --git a/game/vehicles/vehicle.h b/game/vehicles/vehicle.h
index 659821f..c4c8beb 100644
--- a/game/vehicles/vehicle.h
+++ b/game/vehicles/vehicle.h
@@ -2,7 +2,9 @@
 #define VEHICLE_H
 
 #include "linkHistory.h"
+#include <game/activity.h>
 #include <game/network/link.h>
+#include <game/orders.h>
 #include <game/worldobject.h>
 #include <gfx/renderable.h>
 #include <memory>
@@ -13,9 +15,12 @@ class Vehicle : public WorldObject, public Renderable {
 public:
 	explicit Vehicle(const LinkPtr & link, float linkDist = 0);
 	float linkDist; // distance along current link
-	float speed {50}; // speed in m/s (~75 km/h)
+	float speed {}; // speed in m/s (~75 km/h)
 
 	[[nodiscard]] virtual const Location & getLocation() const = 0;
+	Orders orders;
+
+	ActivityPtr currentActivity;
 
 protected:
 	LinkHistory linkHist;
-- 
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