Kayne Ruse
290 lines
8.8 KiB
C++
290 lines
8.8 KiB
C++
/* Copyright: (c) Kayne Ruse 2014
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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*
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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*
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* 3. This notice may not be removed or altered from any source
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* distribution.
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*/
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#include "character_manager.hpp"
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#if defined(__MINGW32__)
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#include "sqlite3/sqlite3.h"
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#else
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#include "sqlite3.h"
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#endif
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#include <algorithm>
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#include <stdexcept>
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//-------------------------
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//Define the queries
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//-------------------------
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static const char* CREATE_CHARACTER = "INSERT INTO Characters (owner, handle, avatar) VALUES (?, ?, ?);";
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static const char* LOAD_CHARACTER = "SELECT * FROM Characters WHERE handle = ?;";
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static const char* SAVE_CHARACTER = "UPDATE OR FAIL Characters SET roomIndex = ?2, originX = ?3, originY = ?4 WHERE uid = ?1;";
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static const char* DELETE_CHARACTER = "DELETE FROM Characters WHERE uid = ?;";
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static const char* COUNT_CHARACTER_RECORDS = "SELECT COUNT(*) FROM Characters;";
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//-------------------------
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//Define the methods
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//-------------------------
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//NOTE: default baseStats as a parameter would be good for different beggining states or multiple classes
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int CharacterManager::Create(int owner, std::string handle, std::string avatar) {
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//Create the character, failing if it exists
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sqlite3_stmt* statement = nullptr;
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//prep
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if (sqlite3_prepare_v2(database, CREATE_CHARACTER, -1, &statement, nullptr) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to prepare an SQL statement: " + sqlite3_errmsg(database)) );
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}
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//parameters
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bool ret = false;
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ret |= sqlite3_bind_int(statement, 1, owner);
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ret |= sqlite3_bind_text(statement, 2, handle.c_str(), handle.size() + 1, SQLITE_STATIC);
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ret |= sqlite3_bind_text(statement, 3, avatar.c_str(), avatar.size() + 1, SQLITE_STATIC);
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//check for binding errors
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if (ret) {
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throw( std::runtime_error(std::string() + "Failed to replace a prepared statement's parameter: " + sqlite3_errmsg(database)) );
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}
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//execute
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if (sqlite3_step(statement) != SQLITE_DONE) {
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//if this fails, than this character exists
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sqlite3_finalize(statement);
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return -1;
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}
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sqlite3_finalize(statement);
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//load this character into memory
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return Load(owner, handle, avatar);
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}
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int CharacterManager::Load(int owner, std::string handle, std::string avatar) {
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//load the specified character, creating it if it doesn't exist
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//fail if it is already loaded, or does not belong to this account
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sqlite3_stmt* statement = nullptr;
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//prep
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if (sqlite3_prepare_v2(database, LOAD_CHARACTER, -1, &statement, nullptr) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to prepare an SQL statement: " + sqlite3_errmsg(database)) );
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}
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//parameter
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if (sqlite3_bind_text(statement, 1, handle.c_str(), handle.size() + 1, SQLITE_STATIC) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to replace a prepared statement's parameter: " + sqlite3_errmsg(database)) );
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}
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//execute
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int ret = sqlite3_step(statement);
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//process the result
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if (ret == SQLITE_ROW) {
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//get the index
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int uid = sqlite3_column_int(statement, 0);
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//check to see if this character is already loaded
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if (elementMap.find(uid) != elementMap.end()) {
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sqlite3_finalize(statement);
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return -1;
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}
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//check the owner
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if (owner != sqlite3_column_int(statement, 1)) {
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sqlite3_finalize(statement);
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return -2;
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}
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//extract the data into memory
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CharacterData& newChar = elementMap[uid];
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//metadata
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newChar.owner = owner;
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newChar.handle = reinterpret_cast<const char*>(sqlite3_column_text(statement, 2));
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newChar.avatar = reinterpret_cast<const char*>(sqlite3_column_text(statement, 3));
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//Don't cache the birth
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//world origin
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newChar.roomIndex = sqlite3_column_int(statement, 5);
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newChar.origin.x = (double)sqlite3_column_int(statement, 6);
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newChar.origin.y = (double)sqlite3_column_int(statement, 7);
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//gameplay components: equipment, items, buffs, debuffs...
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//finish the routine
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sqlite3_finalize(statement);
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return uid;
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}
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sqlite3_finalize(statement);
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if (ret == SQLITE_DONE) {
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//create the non-existant character instead
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return Create(owner, handle, avatar);
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}
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throw(std::runtime_error(std::string() + "Unknown SQL error in LoadCharacter: " + sqlite3_errmsg(database) ));
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}
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int CharacterManager::Save(int uid) {
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//save this character from memory, replacing it if it exists in the database
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//DOCS: To use this method, change the in-memory copy, and then call this function using that object's UID.
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//this method fails if this character is not loaded
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if (elementMap.find(uid) == elementMap.end()) {
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return -1;
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}
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CharacterData& character = elementMap[uid];
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sqlite3_stmt* statement = nullptr;
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//prep
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if (sqlite3_prepare_v2(database, SAVE_CHARACTER, -1, &statement, nullptr) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to prepare an SQL statement: " + sqlite3_errmsg(database)) );
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}
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//parameters
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bool ret = false;
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ret |= sqlite3_bind_int(statement, 1, uid) != SQLITE_OK;
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ret |= sqlite3_bind_int(statement, 2, character.roomIndex) != SQLITE_OK;
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ret |= sqlite3_bind_int(statement, 3, (int)character.origin.x) != SQLITE_OK;
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ret |= sqlite3_bind_int(statement, 4, (int)character.origin.y) != SQLITE_OK;
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//gameplay components: equipment, items, buffs, debuffs...
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//check for binding errors
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if (ret) {
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throw( std::runtime_error(std::string() + "Failed to replace a prepared statement's parameter: " + sqlite3_errmsg(database)) );
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}
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//execute
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if (sqlite3_step(statement) != SQLITE_DONE) {
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//if this fails, than something went horribly wrong
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sqlite3_finalize(statement);
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throw( std::runtime_error(std::string() + "Unknown SQL error when saving a character: " + sqlite3_errmsg(database)) );
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}
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sqlite3_finalize(statement);
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//successful execution
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return 0;
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}
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void CharacterManager::Unload(int uid) {
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//save this character, then unload it
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Save(uid);
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elementMap.erase(uid);
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}
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void CharacterManager::Delete(int uid) {
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//delete this character from the database, then remove it from memory
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sqlite3_stmt* statement = nullptr;
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//prep
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if (sqlite3_prepare_v2(database, DELETE_CHARACTER, -1, &statement, nullptr) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to prepare an SQL statement: " + sqlite3_errmsg(database)) );
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}
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//parameter
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if (sqlite3_bind_int(statement, 1, uid) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to replace a prepared statement's parameter: " + sqlite3_errmsg(database)) );
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}
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//execute
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if (sqlite3_step(statement) != SQLITE_DONE) {
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//if this fails, than something went horribly wrong
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sqlite3_finalize(statement);
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throw( std::runtime_error(std::string() + "Unknown SQL error when deleting a character: " + sqlite3_errmsg(database)) );
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}
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//finish the routine
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sqlite3_finalize(statement);
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elementMap.erase(uid);
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}
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void CharacterManager::UnloadAll() {
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for (auto& it : elementMap) {
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Save(it.first);
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}
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elementMap.clear();
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}
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void CharacterManager::UnloadIf(std::function<bool(std::pair<const int, CharacterData>&)> fn) {
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std::map<int, CharacterData>::iterator it = elementMap.begin();
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while (it != elementMap.end()) {
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if (fn(*it)) {
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Save(it->first);
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it = elementMap.erase(it);
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}
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else {
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++it;
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}
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}
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}
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//-------------------------
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//Define the accessors and mutators
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//-------------------------
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CharacterData* CharacterManager::Get(int uid) {
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std::map<int, CharacterData>::iterator it = elementMap.find(uid);
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if (it == elementMap.end()) {
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return nullptr;
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}
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return &it->second;
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}
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int CharacterManager::GetLoadedCount() {
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return elementMap.size();
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}
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int CharacterManager::GetTotalCount() {
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//a lot just to count something.
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sqlite3_stmt* statement = nullptr;
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//prep
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if (sqlite3_prepare_v2(database, COUNT_CHARACTER_RECORDS, -1, &statement, nullptr) != SQLITE_OK) {
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throw( std::runtime_error(std::string() + "Failed to prepare an SQL statement: " + sqlite3_errmsg(database)) );
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}
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//execute & retrieve the result
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sqlite3_step(statement);
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int ret = sqlite3_column_int(statement, 0);
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//finish the routine
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sqlite3_finalize(statement);
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return ret;
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}
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std::map<int, CharacterData>* CharacterManager::GetContainer() {
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return &elementMap;
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}
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sqlite3* CharacterManager::SetDatabase(sqlite3* db) {
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return database = db;
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}
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sqlite3* CharacterManager::GetDatabase() {
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return database;
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}
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