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267 lines
9.0 KiB
C++
267 lines
9.0 KiB
C++
/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD 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.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file script_info.cpp Implementation of ScriptInfo. */
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#include "../stdafx.h"
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#include "../settings_type.h"
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#include "squirrel_helper.hpp"
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#include "script_info.hpp"
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#include "script_scanner.hpp"
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#include "../3rdparty/fmt/format.h"
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#include "../safeguards.h"
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bool ScriptInfo::CheckMethod(const char *name) const
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{
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if (!this->engine->MethodExists(this->SQ_instance, name)) {
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this->engine->ThrowError(fmt::format("your info.nut/library.nut doesn't have the method '{}'", name));
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return false;
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}
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return true;
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}
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/* static */ SQInteger ScriptInfo::Constructor(HSQUIRRELVM vm, ScriptInfo *info)
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{
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/* Set some basic info from the parent */
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Squirrel::GetInstance(vm, &info->SQ_instance, 2);
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/* Make sure the instance stays alive over time */
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sq_addref(vm, &info->SQ_instance);
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info->scanner = (ScriptScanner *)Squirrel::GetGlobalPointer(vm);
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info->engine = info->scanner->GetEngine();
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/* Ensure the mandatory functions exist */
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static const char * const required_functions[] = {
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"GetAuthor",
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"GetName",
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"GetShortName",
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"GetDescription",
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"GetVersion",
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"GetDate",
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"CreateInstance",
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};
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for (size_t i = 0; i < lengthof(required_functions); i++) {
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if (!info->CheckMethod(required_functions[i])) return SQ_ERROR;
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}
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/* Get location information of the scanner */
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info->main_script = info->scanner->GetMainScript();
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info->tar_file = info->scanner->GetTarFile();
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/* Cache the data the info file gives us. */
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetAuthor", &info->author, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetName", &info->name, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetShortName", &info->short_name, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetDescription", &info->description, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetDate", &info->date, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallIntegerMethod(info->SQ_instance, "GetVersion", &info->version, MAX_GET_OPS)) return SQ_ERROR;
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if (!info->engine->CallStringMethod(info->SQ_instance, "CreateInstance", &info->instance_name, MAX_CREATEINSTANCE_OPS)) return SQ_ERROR;
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/* The GetURL function is optional. */
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if (info->engine->MethodExists(info->SQ_instance, "GetURL")) {
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if (!info->engine->CallStringMethod(info->SQ_instance, "GetURL", &info->url, MAX_GET_OPS)) return SQ_ERROR;
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}
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/* Check if we have settings */
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if (info->engine->MethodExists(info->SQ_instance, "GetSettings")) {
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if (!info->GetSettings()) return SQ_ERROR;
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}
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return 0;
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}
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bool ScriptInfo::GetSettings()
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{
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return this->engine->CallMethod(this->SQ_instance, "GetSettings", nullptr, MAX_GET_SETTING_OPS);
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}
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SQInteger ScriptInfo::AddSetting(HSQUIRRELVM vm)
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{
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ScriptConfigItem config;
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uint items = 0;
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/* Read the table, and find all properties we care about */
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sq_pushnull(vm);
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while (SQ_SUCCEEDED(sq_next(vm, -2))) {
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const SQChar *key_string;
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if (SQ_FAILED(sq_getstring(vm, -2, &key_string))) return SQ_ERROR;
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std::string key = StrMakeValid(key_string);
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if (key == "name") {
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const SQChar *sqvalue;
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if (SQ_FAILED(sq_getstring(vm, -1, &sqvalue))) return SQ_ERROR;
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/* Don't allow '=' and ',' in configure setting names, as we need those
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* 2 chars to nicely store the settings as a string. */
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auto replace_with_underscore = [](auto c) { return c == '=' || c == ','; };
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config.name = StrMakeValid(sqvalue);
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std::replace_if(config.name.begin(), config.name.end(), replace_with_underscore, '_');
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items |= 0x001;
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} else if (key == "description") {
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const SQChar *sqdescription;
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if (SQ_FAILED(sq_getstring(vm, -1, &sqdescription))) return SQ_ERROR;
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config.description = StrMakeValid(sqdescription);
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items |= 0x002;
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} else if (key == "min_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.min_value = ClampTo<int32_t>(res);
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items |= 0x004;
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} else if (key == "max_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.max_value = ClampTo<int32_t>(res);
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items |= 0x008;
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} else if (key == "easy_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.easy_value = ClampTo<int32_t>(res);
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items |= 0x010;
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} else if (key == "medium_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.medium_value = ClampTo<int32_t>(res);
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items |= 0x020;
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} else if (key == "hard_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.hard_value = ClampTo<int32_t>(res);
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items |= 0x040;
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} else if (key == "random_deviation") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.random_deviation = ClampTo<int32_t>(abs(res));
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items |= 0x200;
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} else if (key == "custom_value") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.custom_value = ClampTo<int32_t>(res);
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items |= 0x080;
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} else if (key == "step_size") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.step_size = ClampTo<int32_t>(res);
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} else if (key == "flags") {
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SQInteger res;
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if (SQ_FAILED(sq_getinteger(vm, -1, &res))) return SQ_ERROR;
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config.flags = (ScriptConfigFlags)res;
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items |= 0x100;
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} else {
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this->engine->ThrowError(fmt::format("unknown setting property '{}'", key));
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return SQ_ERROR;
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}
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sq_pop(vm, 2);
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}
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sq_pop(vm, 1);
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/* Don't allow both random_deviation and SCRIPTCONFIG_RANDOM to
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* be set for the same config item. */
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if ((items & 0x200) != 0 && (config.flags & SCRIPTCONFIG_RANDOM) != 0) {
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this->engine->ThrowError("Setting both random_deviation and SCRIPTCONFIG_RANDOM is not allowed");
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return SQ_ERROR;
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}
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/* Reset the bit for random_deviation as it's optional. */
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items &= ~0x200;
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/* Make sure all properties are defined */
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uint mask = (config.flags & SCRIPTCONFIG_BOOLEAN) ? 0x1F3 : 0x1FF;
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if (items != mask) {
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this->engine->ThrowError("please define all properties of a setting (min/max not allowed for booleans)");
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return SQ_ERROR;
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}
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this->config_list.emplace_back(config);
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return 0;
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}
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SQInteger ScriptInfo::AddLabels(HSQUIRRELVM vm)
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{
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const SQChar *setting_name_str;
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if (SQ_FAILED(sq_getstring(vm, -2, &setting_name_str))) return SQ_ERROR;
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std::string setting_name = StrMakeValid(setting_name_str);
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ScriptConfigItem *config = nullptr;
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for (auto &item : this->config_list) {
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if (item.name == setting_name) config = &item;
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}
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if (config == nullptr) {
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this->engine->ThrowError(fmt::format("Trying to add labels for non-defined setting '{}'", setting_name));
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return SQ_ERROR;
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}
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if (!config->labels.empty()) return SQ_ERROR;
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/* Read the table and find all labels */
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sq_pushnull(vm);
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while (SQ_SUCCEEDED(sq_next(vm, -2))) {
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const SQChar *key_string;
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const SQChar *label;
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if (SQ_FAILED(sq_getstring(vm, -2, &key_string))) return SQ_ERROR;
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if (SQ_FAILED(sq_getstring(vm, -1, &label))) return SQ_ERROR;
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/* Because squirrel doesn't support identifiers starting with a digit,
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* we skip the first character. */
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key_string++;
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int sign = 1;
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if (*key_string == '_') {
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/* When the second character is '_', it indicates the value is negative. */
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sign = -1;
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key_string++;
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}
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int key = atoi(key_string) * sign;
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config->labels[key] = StrMakeValid(label);
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sq_pop(vm, 2);
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}
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sq_pop(vm, 1);
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/* Check labels for completeness */
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config->complete_labels = true;
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for (int value = config->min_value; value <= config->max_value; value++) {
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if (config->labels.find(value) == config->labels.end()) {
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config->complete_labels = false;
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break;
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}
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}
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return 0;
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}
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const ScriptConfigItemList *ScriptInfo::GetConfigList() const
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{
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return &this->config_list;
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}
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const ScriptConfigItem *ScriptInfo::GetConfigItem(const std::string_view name) const
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{
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for (const auto &item : this->config_list) {
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if (item.name == name) return &item;
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}
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return nullptr;
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}
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int ScriptInfo::GetSettingDefaultValue(const std::string &name) const
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{
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for (const auto &item : this->config_list) {
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if (item.name != name) continue;
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/* The default value depends on the difficulty level */
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switch (GetGameSettings().script.settings_profile) {
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case SP_EASY: return item.easy_value;
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case SP_MEDIUM: return item.medium_value;
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case SP_HARD: return item.hard_value;
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case SP_CUSTOM: return item.custom_value;
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default: NOT_REACHED();
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}
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}
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/* There is no such setting */
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return -1;
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}
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