/
Doom3MapReader.cpp
260 lines (206 loc) · 6.67 KB
/
Doom3MapReader.cpp
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
#include "Doom3MapReader.h"
#include "itextstream.h"
#include "ieclass.h"
#include "igame.h"
#include "ientity.h"
#include "string/string.h"
#include "Doom3MapFormat.h"
#include "i18n.h"
#include <fmt/format.h>
#include "primitiveparsers/BrushDef.h"
#include "primitiveparsers/BrushDef3.h"
#include "primitiveparsers/PatchDef2.h"
#include "primitiveparsers/PatchDef3.h"
namespace map {
Doom3MapReader::Doom3MapReader(IMapImportFilter& importFilter) :
_importFilter(importFilter),
_entityCount(0),
_primitiveCount(0)
{}
void Doom3MapReader::readFromStream(std::istream& stream)
{
// Call the virtual method to initialise the primitve parser map (if not done yet)
initPrimitiveParsers();
// The tokeniser used to split the stream into pieces
parser::BasicDefTokeniser<std::istream> tok(stream);
// Try to parse the map version (throws on failure)
parseMapVersion(tok);
// Read each entity in the map, until EOF is reached
while (tok.hasMoreTokens())
{
// Create an entity node by parsing from the stream. If there is an
// exception, display it and return
try
{
parseEntity(tok);
}
catch (FailureException& e)
{
std::string text = fmt::format(_("Failed parsing entity {0:d}:\n{1}"), _entityCount, e.what());
// Re-throw with more text
throw FailureException(text);
}
_entityCount++;
}
// EOF reached, success
}
void Doom3MapReader::initPrimitiveParsers()
{
if (_primitiveParsers.empty())
{
addPrimitiveParser(std::make_shared<BrushDefParser>());
addPrimitiveParser(std::make_shared<BrushDef3Parser>());
addPrimitiveParser(std::make_shared<PatchDef2Parser>());
addPrimitiveParser(std::make_shared<PatchDef3Parser>());
}
}
void Doom3MapReader::addPrimitiveParser(const PrimitiveParserPtr& parser)
{
_primitiveParsers.insert(PrimitiveParsers::value_type(parser->getKeyword(), parser));
}
void Doom3MapReader::parseMapVersion(parser::DefTokeniser& tok)
{
// Parse the map version
float version = 0;
try
{
tok.assertNextToken("Version");
version = std::stof(tok.nextToken());
}
catch (parser::ParseException& e)
{
// failed => quit
rError()
<< "[mapdoom3] Unable to parse map version: "
<< e.what() << std::endl;
throw FailureException(_("Unable to parse map version (parse exception)."));
}
catch (std::invalid_argument& e)
{
rError()
<< "[mapdoom3] Unable to parse map version: "
<< e.what() << std::endl;
throw FailureException(_("Could not recognise map version number format."));
}
float requiredVersion = MAP_VERSION_D3;
// Check we have the correct version for this module
if (version != requiredVersion)
{
std::string errMsg = fmt::format(_("Incorrect map version: required {0:f}, found {1:f}"), requiredVersion, version);
rError() << errMsg << std::endl;
throw FailureException(errMsg);
}
// success
}
void Doom3MapReader::parsePrimitive(parser::DefTokeniser& tok, const scene::INodePtr& parentEntity)
{
_primitiveCount++;
std::string primitiveKeyword = tok.nextToken();
// Get a parser for this keyword
PrimitiveParsers::const_iterator p = _primitiveParsers.find(primitiveKeyword);
if (p == _primitiveParsers.end())
{
throw FailureException("Unknown primitive type: " + primitiveKeyword);
}
const PrimitiveParserPtr& parser = p->second;
// Try to parse the primitive, throwing exception if failed
try
{
scene::INodePtr primitive = parser->parse(tok);
if (!primitive)
{
std::string text = fmt::format(_("Primitive #{0:d}: parse error"), _primitiveCount);
throw FailureException(text);
}
// Now add the primitive as a child of the entity
_importFilter.addPrimitiveToEntity(primitive, parentEntity);
}
catch (parser::ParseException& e)
{
// Translate ParseExceptions to FailureExceptions
std::string text = fmt::format(_("Primitive #{0:d}: parse exception {1}"), _primitiveCount, e.what());
throw FailureException(text);
}
}
scene::INodePtr Doom3MapReader::createEntity(const EntityKeyValues& keyValues)
{
// Get the classname from the EntityKeyValues
EntityKeyValues::const_iterator found = keyValues.find("classname");
if (found == keyValues.end())
{
throw FailureException("Doom3MapReader::createEntity(): could not find classname.");
}
// Otherwise create the entity and add all of the properties
std::string className = found->second;
IEntityClassPtr classPtr = GlobalEntityClassManager().findClass(className);
if (classPtr == NULL)
{
rError() << "[mapdoom3]: Could not find entity class: "
<< className << std::endl;
// greebo: EntityClass not found, insert a brush-based one
classPtr = GlobalEntityClassManager().findOrInsert(className, true);
}
// Create the actual entity node
IEntityNodePtr node(GlobalEntityCreator().createEntity(classPtr));
for (EntityKeyValues::const_iterator i = keyValues.begin();
i != keyValues.end();
++i)
{
node->getEntity().setKeyValue(i->first, i->second);
}
return node;
}
void Doom3MapReader::parseEntity(parser::DefTokeniser& tok)
{
// Map of keyvalues for this entity
EntityKeyValues keyValues;
// The actual entity. This is initially null, and will be created when
// primitives start or the end of the entity is reached
scene::INodePtr entity;
// Start parsing, first token must be an open brace
tok.assertNextToken("{");
std::string token = tok.nextToken();
// Reset the primitive counter, we're starting a new entity
_primitiveCount = 0;
while (true)
{
// Token must be either a key, a "{" to indicate the start of a
// primitive, or a "}" to indicate the end of the entity
if (token == "{") // PRIMITIVE
{
// Create the entity right now, if not yet done
if (entity == NULL)
{
entity = createEntity(keyValues);
}
// Parse the primitive block, and pass the parent entity
parsePrimitive(tok, entity);
}
else if (token == "}") // END OF ENTITY
{
// Create the entity if necessary and return it
if (entity == NULL)
{
entity = createEntity(keyValues);
}
break;
}
else // KEY
{
std::string value = tok.nextToken();
// Sanity check (invalid number of tokens will get us out of sync)
if (value == "{" || value == "}")
{
std::string text = fmt::format(_("Parsed invalid value '{0}' for key '{1}'"), value, token);
throw FailureException(text);
}
// Otherwise add the keyvalue pair to our map
keyValues.insert(EntityKeyValues::value_type(token, value));
}
// Get the next token
token = tok.nextToken();
}
// Insert the entity
_importFilter.addEntity(entity);
}
} // namespace map