Player eye height: Make this a settable player object property

src/content_cao.cpp

@@ -1260,6 +1260,7 @@ void GenericCAO::processMessage(const std::string &data)
 			collision_box.MaxEdge *= BS;
 			player->setCollisionbox(collision_box);
 			player->setCanZoom(m_prop.can_zoom);
+			player->setEyeHeight(m_prop.eye_height);
 		}
 
 		if ((m_is_player && !m_is_local_player) && m_prop.nametag.empty())

src/content_sao.cpp

@@ -809,6 +809,7 @@ PlayerSAO::PlayerSAO(ServerEnvironment *env_, RemotePlayer *player_, session_t p
 	m_prop.colors.clear();
 	m_prop.colors.emplace_back(255, 255, 255, 255);
 	m_prop.spritediv = v2s16(1,1);
+	m_prop.eye_height = 1.625f;
 	// end of default appearance
 	m_prop.is_visible = true;
 	m_prop.makes_footstep_sound = true;
@@ -834,7 +835,7 @@ void PlayerSAO::finalize(RemotePlayer *player, const std::set<std::string> &priv
 
 v3f PlayerSAO::getEyeOffset() const
 {
-	return v3f(0, BS * 1.625f, 0);
+	return v3f(0, BS * m_prop.eye_height, 0);
 }
 
 std::string PlayerSAO::getDescription()

src/localplayer.cpp

@@ -718,7 +718,8 @@ v3s16 LocalPlayer::getLightPosition() const
 
 v3f LocalPlayer::getEyeOffset() const
 {
-	float eye_height = camera_barely_in_ceiling ? 1.5f : 1.625f;
+	float eye_height = camera_barely_in_ceiling ?
+		m_eye_height - 0.125f : m_eye_height;
 	return v3f(0, BS * eye_height, 0);
 }
 

src/localplayer.h

@@ -138,6 +138,7 @@ public:
 	v3f getPosition() const { return m_position; }
 	v3f getEyePosition() const { return m_position + getEyeOffset(); }
 	v3f getEyeOffset() const;
+	void setEyeHeight(float eye_height) { m_eye_height = eye_height; }
 
 	void setCollisionbox(const aabb3f &box) { m_collisionbox = box; }
 
@@ -181,6 +182,7 @@ private:
 	aabb3f m_collisionbox = aabb3f(-BS * 0.30f, 0.0f, -BS * 0.30f, BS * 0.30f,
 			BS * 1.75f, BS * 0.30f);
 	bool m_can_zoom = true;
+	float m_eye_height = 1.625f;
 
 	GenericCAO *m_cao = nullptr;
 	Client *m_client;

src/object_properties.cpp

@@ -67,6 +67,7 @@ std::string ObjectProperties::dump()
 	os << ", pointable=" << pointable;
 	os << ", can_zoom=" << can_zoom;
 	os << ", static_save=" << static_save;
+	os << ", eye_height=" << eye_height;
 	return os.str();
 }
 
@@ -111,6 +112,7 @@ void ObjectProperties::serialize(std::ostream &os) const
 	writeU8(os, can_zoom);
 	writeS8(os, glow);
 	writeU16(os, breath_max);
+	writeF1000(os, eye_height);
 
 	// Add stuff only at the bottom.
 	// Never remove anything, because we don't want new versions of this
@@ -162,5 +164,6 @@ void ObjectProperties::deSerialize(std::istream &is)
 	try {
 		glow = readS8(is);
 		breath_max = readU16(is);
+		eye_height = readF1000(is);
 	} catch (SerializationError &e) {}
 }

src/object_properties.h

@@ -59,6 +59,7 @@ struct ObjectProperties
 	//! For dropped items, this contains item information.
 	std::string wield_item;
 	bool static_save = true;
+	float eye_height = 1.625f;
 
 	ObjectProperties();
 	std::string dump();

src/script/common/c_content.cpp

@@ -266,6 +266,7 @@ void read_object_properties(lua_State *L, int index,
 	if (getfloatfield(L, -1, "stepheight", prop->stepheight))
 		prop->stepheight *= BS;
 	getboolfield(L, -1, "can_zoom", prop->can_zoom);
+	getfloatfield(L, -1, "eye_height", prop->eye_height);
 
 	getfloatfield(L, -1, "automatic_rotate", prop->automatic_rotate);
 	lua_getfield(L, -1, "automatic_face_movement_dir");
@@ -359,7 +360,8 @@ void push_object_properties(lua_State *L, ObjectProperties *prop)
 	lua_setfield(L, -2, "stepheight");
 	lua_pushboolean(L, prop->can_zoom);
 	lua_setfield(L, -2, "can_zoom");
-
+	lua_pushnumber(L, prop->eye_height);
+	lua_setfield(L, -2, "eye_height");
 	lua_pushnumber(L, prop->automatic_rotate);
 	lua_setfield(L, -2, "automatic_rotate");
 	if (prop->automatic_face_movement_dir)