summaryrefslogtreecommitdiff
path: root/src/ai/ai_info.cpp
blob: aa783c3854bac05cc9cbe67cffd56e89d7b8286e (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
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
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
/* $Id$ */

/** @file ai_info.cpp Implementation of AIFileInfo */

#include "../stdafx.h"

#include <squirrel.h>
#include "../script/squirrel.hpp"
#include "../script/squirrel_helper.hpp"
#include "ai.hpp"
#include "ai_info.hpp"
#include "ai_scanner.hpp"
#include "../settings_type.h"
#include "../openttd.h"

AIConfigItem _start_date_config = {
	"start_date",
	"The amount of days after the start of the last AI, this AI will start (give or take).",
	AI::START_NEXT_MIN,
	AI::START_NEXT_MAX,
	AI::START_NEXT_MEDIUM,
	AI::START_NEXT_EASY,
	AI::START_NEXT_MEDIUM,
	AI::START_NEXT_HARD,
	AI::START_NEXT_DEVIATION,
	30,
	AICONFIG_NONE,
	NULL
};

AILibrary::~AILibrary()
{
	free((void *)this->category);
}

/* static */ SQInteger AIFileInfo::Constructor(HSQUIRRELVM vm, AIFileInfo *info)
{
	SQInteger res = ScriptFileInfo::Constructor(vm, info);
	if (res != 0) return res;
	info->base = ((AIScanner *)Squirrel::GetGlobalPointer(vm));

	return 0;
}

/* static */ SQInteger AIInfo::Constructor(HSQUIRRELVM vm)
{
	/* Get the AIInfo */
	SQUserPointer instance = NULL;
	if (SQ_FAILED(sq_getinstanceup(vm, 2, &instance, 0)) || instance == NULL) return sq_throwerror(vm, _SC("Pass an instance of a child class of AIInfo to RegisterAI"));
	AIInfo *info = (AIInfo *)instance;

	SQInteger res = AIFileInfo::Constructor(vm, info);
	if (res != 0) return res;

	AIConfigItem config = _start_date_config;
	config.name = strdup(config.name);
	config.description = strdup(config.description);
	info->config_list.push_back(config);

	/* Check if we have settings */
	if (info->engine->MethodExists(*info->SQ_instance, "GetSettings")) {
		if (!info->GetSettings()) return SQ_ERROR;
	}
	if (info->engine->MethodExists(*info->SQ_instance, "MinVersionToLoad")) {
		if (!info->engine->CallIntegerMethod(*info->SQ_instance, "MinVersionToLoad", &info->min_loadable_version)) return SQ_ERROR;
	} else {
		info->min_loadable_version = info->GetVersion();
	}

	/* Remove the link to the real instance, else it might get deleted by RegisterAI() */
	sq_setinstanceup(vm, 2, NULL);
	/* Register the AI to the base system */
	info->base->RegisterAI(info);
	return 0;
}

/* static */ SQInteger AIInfo::DummyConstructor(HSQUIRRELVM vm)
{
	/* Get the AIInfo */
	SQUserPointer instance;
	sq_getinstanceup(vm, 2, &instance, 0);
	AIInfo *info = (AIInfo *)instance;

	SQInteger res = AIFileInfo::Constructor(vm, info);
	if (res != 0) return res;

	/* Remove the link to the real instance, else it might get deleted by RegisterAI() */
	sq_setinstanceup(vm, 2, NULL);
	/* Register the AI to the base system */
	info->base->SetDummyAI(info);
	return 0;
}

bool AIInfo::GetSettings()
{
	return this->engine->CallMethod(*this->SQ_instance, "GetSettings", NULL, -1);
}

AIInfo::~AIInfo()
{
	/* Free all allocated strings */
	for (AIConfigItemList::iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
		free((char *)(*it).name);
		free((char *)(*it).description);
		if (it->labels != NULL) {
			for (LabelMapping::iterator it2 = (*it).labels->Begin(); it2 != (*it).labels->End(); it2++) {
				free(it2->second);
			}
			delete it->labels;
		}
	}
	this->config_list.clear();
}

bool AIInfo::CanLoadFromVersion(int version) const
{
	if (version == -1) return true;
	return version >= this->min_loadable_version && version <= this->GetVersion();
}

SQInteger AIInfo::AddSetting(HSQUIRRELVM vm)
{
	AIConfigItem config;
	memset(&config, 0, sizeof(config));
	config.max_value = 1;
	config.step_size = 1;
	uint items = 0;

	/* Read the table, and find all properties we care about */
	sq_pushnull(vm);
	while (SQ_SUCCEEDED(sq_next(vm, -2))) {
		const SQChar *sqkey;
		if (SQ_FAILED(sq_getstring(vm, -2, &sqkey))) return SQ_ERROR;
		const char *key = FS2OTTD(sqkey);

		if (strcmp(key, "name") == 0) {
			const SQChar *sqvalue;
			if (SQ_FAILED(sq_getstring(vm, -1, &sqvalue))) return SQ_ERROR;
			config.name = strdup(FS2OTTD(sqvalue));
			char *s;
			/* Don't allow '=' and ',' in configure setting names, as we need those
			 *  2 chars to nicely store the settings as a string. */
			while ((s = (char *)strchr(config.name, '=')) != NULL) *s = '_';
			while ((s = (char *)strchr(config.name, ',')) != NULL) *s = '_';
			items |= 0x001;
		} else if (strcmp(key, "description") == 0) {
			const SQChar *sqdescription;
			if (SQ_FAILED(sq_getstring(vm, -1, &sqdescription))) return SQ_ERROR;
			config.description = strdup(FS2OTTD(sqdescription));
			items |= 0x002;
		} else if (strcmp(key, "min_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.min_value = res;
			items |= 0x004;
		} else if (strcmp(key, "max_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.max_value = res;
			items |= 0x008;
		} else if (strcmp(key, "easy_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.easy_value = res;
			items |= 0x010;
		} else if (strcmp(key, "medium_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.medium_value = res;
			items |= 0x020;
		} else if (strcmp(key, "hard_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.hard_value = res;
			items |= 0x040;
		}  else if (strcmp(key, "random_deviation") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.random_deviation = res;
			items |= 0x200;
		} else if (strcmp(key, "custom_value") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.custom_value = res;
			items |= 0x080;
		} else if (strcmp(key, "step_size") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.step_size = res;
		} else if (strcmp(key, "flags") == 0) {
			SQInteger res;
			if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
			config.flags = (AIConfigFlags)res;
			items |= 0x100;
		} else {
			char error[1024];
			snprintf(error, sizeof(error), "unknown setting property '%s'", key);
			this->engine->ThrowError(error);
			return SQ_ERROR;
		}

		sq_pop(vm, 2);
	}
	sq_pop(vm, 1);

	/* Don't allow both random_deviation and AICONFIG_RANDOM to
	 * be set for the same config item. */
	if ((items & 0x200) != 0 && (config.flags & AICONFIG_RANDOM) != 0) {
		char error[1024];
		snprintf(error, sizeof(error), "Setting both random_deviation and AICONFIG_RANDOM is not allowed");
		this->engine->ThrowError(error);
		return SQ_ERROR;
	}
	/* Reset the bit for random_deviation as it's optional. */
	items &= ~0x200;

	/* Make sure all properties are defined */
	uint mask = (config.flags & AICONFIG_BOOLEAN) ? 0x1F3 : 0x1FF;
	if (items != mask) {
		char error[1024];
		snprintf(error, sizeof(error), "please define all properties of a setting (min/max not allowed for booleans)");
		this->engine->ThrowError(error);
		return SQ_ERROR;
	}

	this->config_list.push_back(config);
	return 0;
}

SQInteger AIInfo::AddLabels(HSQUIRRELVM vm)
{
	const SQChar *sq_setting_name;
	if (SQ_FAILED(sq_getstring(vm, -2, &sq_setting_name))) return SQ_ERROR;
	const char *setting_name = FS2OTTD(sq_setting_name);

	AIConfigItem *config = NULL;
	for (AIConfigItemList::iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
		if (strcmp((*it).name, setting_name) == 0) config = &(*it);
	}

	if (config == NULL) {
		char error[1024];
		snprintf(error, sizeof(error), "Trying to add labels for non-defined setting '%s'", setting_name);
		this->engine->ThrowError(error);
		return SQ_ERROR;
	}
	if (config->labels != NULL) return SQ_ERROR;

	config->labels = new LabelMapping;

	/* Read the table and find all labels */
	sq_pushnull(vm);
	while (SQ_SUCCEEDED(sq_next(vm, -2))) {
		const SQChar *sq_key;
		const SQChar *sq_label;
		if (SQ_FAILED(sq_getstring(vm, -2, &sq_key))) return SQ_ERROR;
		if (SQ_FAILED(sq_getstring(vm, -1, &sq_label))) return SQ_ERROR;
		/* Because squirrel doesn't support identifiers starting with a digit,
		 * we skip the first character. */
		const char *key_string = FS2OTTD(sq_key);
		int key = atoi(key_string + 1);
		const char *label = FS2OTTD(sq_label);

		if (config->labels->Find(key) == config->labels->End()) config->labels->Insert(key, strdup(label));

		sq_pop(vm, 2);
	}
	sq_pop(vm, 1);

	return 0;
}

const AIConfigItemList *AIInfo::GetConfigList() const
{
	return &this->config_list;
}

const AIConfigItem *AIInfo::GetConfigItem(const char *name) const
{
	for (AIConfigItemList::const_iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
		if (strcmp((*it).name, name) == 0) return &(*it);
	}
	return NULL;
}

int AIInfo::GetSettingDefaultValue(const char *name) const
{
	for (AIConfigItemList::const_iterator it = this->config_list.begin(); it != this->config_list.end(); it++) {
		if (strcmp((*it).name, name) != 0) continue;
		/* The default value depends on the difficulty level */
		switch ((_game_mode == GM_MENU) ? _settings_newgame.difficulty.diff_level : _settings_game.difficulty.diff_level) {
			case 0: return (*it).easy_value;
			case 1: return (*it).medium_value;
			case 2: return (*it).hard_value;
			case 3: return (*it).custom_value;
			default: NOT_REACHED();
		}
	}

	/* There is no such setting */
	return -1;
}

/* static */ SQInteger AILibrary::Constructor(HSQUIRRELVM vm)
{
	/* Create a new AIFileInfo */
	AILibrary *library = new AILibrary();

	SQInteger res = AIFileInfo::Constructor(vm, library);
	if (res != 0) {
		delete library;
		return res;
	}

	/* Cache the category */
	if (!library->CheckMethod("GetCategory") || !library->engine->CallStringMethodStrdup(*library->SQ_instance, "GetCategory", &library->category)) {
		delete library;
		return SQ_ERROR;
	}

	/* Register the Library to the base system */
	library->base->RegisterLibrary(library);

	return 0;
}

/* static */ SQInteger AILibrary::Import(HSQUIRRELVM vm)
{
	SQConvert::SQAutoFreePointers ptr;
	const char *library = GetParam(SQConvert::ForceType<const char *>(), vm, 2, &ptr);
	const char *class_name = GetParam(SQConvert::ForceType<const char *>(), vm, 3, &ptr);
	int version = GetParam(SQConvert::ForceType<int>(), vm, 4, &ptr);

	if (!AI::ImportLibrary(library, class_name, version, vm)) return -1;
	return 1;
}