summaryrefslogtreecommitdiff
path: root/src/util/pointedthing.cpp
blob: e5c5dcf4c9747a04901394544399f6605d77fbb0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
/*
Minetest
Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include "pointedthing.h"

#include "serialize.h"
#include "../exceptions.h"
#include <sstream>

PointedThing::PointedThing(const v3s16 &under, const v3s16 &above,
	const v3s16 &real_under, const v3f &point, const v3s16 &normal,
	f32 distSq):
	type(POINTEDTHING_NODE),
	node_undersurface(under),
	node_abovesurface(above),
	node_real_undersurface(real_under),
	intersection_point(point),
	intersection_normal(normal),
	distanceSq(distSq)
{}

PointedThing::PointedThing(s16 id, const v3f &point, const v3s16 &normal,
	f32 distSq) :
	type(POINTEDTHING_OBJECT),
	object_id(id),
	intersection_point(point),
	intersection_normal(normal),
	distanceSq(distSq)
{}

std::string PointedThing::dump() const
{
	std::ostringstream os(std::ios::binary);
	switch (type) {
	case POINTEDTHING_NOTHING:
		os << "[nothing]";
		break;
	case POINTEDTHING_NODE:
	{
		const v3s16 &u = node_undersurface;
		const v3s16 &a = node_abovesurface;
		os << "[node under=" << u.X << "," << u.Y << "," << u.Z << " above="
			<< a.X << "," << a.Y << "," << a.Z << "]";
	}
		break;
	case POINTEDTHING_OBJECT:
		os << "[object " << object_id << "]";
		break;
	default:
		os << "[unknown PointedThing]";
	}
	return os.str();
}

void PointedThing::serialize(std::ostream &os) const
{
	writeU8(os, 0); // version
	writeU8(os, (u8)type);
	switch (type) {
	case POINTEDTHING_NOTHING:
		break;
	case POINTEDTHING_NODE:
		writeV3S16(os, node_undersurface);
		writeV3S16(os, node_abovesurface);
		break;
	case POINTEDTHING_OBJECT:
		writeS16(os, object_id);
		break;
	}
}

void PointedThing::deSerialize(std::istream &is)
{
	int version = readU8(is);
	if (version != 0) throw SerializationError(
			"unsupported PointedThing version");
	type = (PointedThingType) readU8(is);
	switch (type) {
	case POINTEDTHING_NOTHING:
		break;
	case POINTEDTHING_NODE:
		node_undersurface = readV3S16(is);
		node_abovesurface = readV3S16(is);
		break;
	case POINTEDTHING_OBJECT:
		object_id = readS16(is);
		break;
	default:
		throw SerializationError("unsupported PointedThingType");
	}
}

bool PointedThing::operator==(const PointedThing &pt2) const
{
	if (type != pt2.type)
	{
		return false;
	}
	if (type == POINTEDTHING_NODE)
	{
		if ((node_undersurface != pt2.node_undersurface)
				|| (node_abovesurface != pt2.node_abovesurface)
				|| (node_real_undersurface != pt2.node_real_undersurface))
			return false;
	}
	else if (type == POINTEDTHING_OBJECT)
	{
		if (object_id != pt2.object_id)
			return false;
	}
	return true;
}

bool PointedThing::operator!=(const PointedThing &pt2) const
{
	return !(*this == pt2);
}