From c08e33649931b679b17488ba6f7dab1d628213fd Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 14 Feb 2021 14:19:21 +0000
Subject: Add our first vehicle

---
 game/vehicles/railloco.cpp | 30 ++++++++++++++++++++++++++++++
 game/vehicles/railloco.h   | 14 ++++++++++++++
 game/vehicles/vehicle.cpp  |  6 ++++++
 game/vehicles/vehicle.h    | 19 +++++++++++++++++++
 4 files changed, 69 insertions(+)
 create mode 100644 game/vehicles/railloco.cpp
 create mode 100644 game/vehicles/railloco.h
 create mode 100644 game/vehicles/vehicle.cpp
 create mode 100644 game/vehicles/vehicle.h

(limited to 'game/vehicles')

diff --git a/game/vehicles/railloco.cpp b/game/vehicles/railloco.cpp
new file mode 100644
index 0000000..baa9b81
--- /dev/null
+++ b/game/vehicles/railloco.cpp
@@ -0,0 +1,30 @@
+#include "railloco.h"
+#include "game/vehicles/vehicle.h"
+#include "gfx/gl/transform.h"
+#include <glm/glm.hpp>
+#include <maths.h>
+
+void
+RailLoco::tick(TickDuration dur)
+{
+	linkDist += dur.count() * speed;
+	while (linkDist > link->length) {
+		location = link->positionAt(link->length, linkDir);
+		const auto & nexts {link->nexts[1 - linkDir]};
+		const auto next = std::find_if(nexts.begin(), nexts.end(), [ang = location.GetRot().y](const Link::Next & n) {
+			return std::abs(normalize(n.first->ends[n.second].second - ang)) < 0.1F;
+		});
+		if (next != nexts.end()) {
+			linkDist -= link->length;
+			link = next->first;
+			linkDir = next->second;
+		}
+		else {
+			linkDist = link->length;
+			speed = 0;
+		}
+	}
+	location = link->positionAt(linkDist, linkDir);
+}
+
+Brush47::Brush47(LinkPtr l) : RailLoco(l, "brush47.obj", "brush47.png") { }
diff --git a/game/vehicles/railloco.h b/game/vehicles/railloco.h
new file mode 100644
index 0000000..05e3e48
--- /dev/null
+++ b/game/vehicles/railloco.h
@@ -0,0 +1,14 @@
+#include "game/worldobject.h"
+#include "vehicle.h"
+#include <string>
+
+class RailLoco : public Vehicle {
+public:
+	using Vehicle::Vehicle;
+	void tick(TickDuration elapsed) override;
+};
+
+class Brush47 : public RailLoco {
+public:
+	Brush47(LinkPtr p);
+};
diff --git a/game/vehicles/vehicle.cpp b/game/vehicles/vehicle.cpp
new file mode 100644
index 0000000..4c4ac71
--- /dev/null
+++ b/game/vehicles/vehicle.cpp
@@ -0,0 +1,6 @@
+#include "vehicle.h"
+
+Vehicle::Vehicle(LinkPtr l, const std::string & obj, const std::string & tex) :
+	Physical(l->ends.front().first->pos, obj, tex), link(l)
+{
+}
diff --git a/game/vehicles/vehicle.h b/game/vehicles/vehicle.h
new file mode 100644
index 0000000..01be6a6
--- /dev/null
+++ b/game/vehicles/vehicle.h
@@ -0,0 +1,19 @@
+#ifndef VEHICLE_H
+#define VEHICLE_H
+
+#include "game/physical.h"
+#include <game/network/link.h>
+#include <game/worldobject.h>
+#include <glm/glm.hpp>
+#include <string>
+
+class Vehicle : public WorldObject, public Physical {
+public:
+	Vehicle(LinkPtr link, const std::string & obj, const std::string & tex);
+	LinkPtr link; // Which link are we travelling along
+	unsigned char linkDir {0}; // Starting end e0->e1 or e1->e0
+	float linkDist {0}; // distance long current link
+	float speed {50}; // speed in m/s (~75 km/h)
+};
+
+#endif
-- 
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