SkillDiscovery.h File Reference

#include "Common.h"

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Functions
TC_GAME_API void	LoadSkillDiscoveryTable ()
TC_GAME_API uint32	GetSkillDiscoverySpell (uint32 skillId, uint32 spellId, Player *player)
TC_GAME_API bool	HasDiscoveredAllSpells (uint32 spellId, Player *player)
TC_GAME_API uint32	GetExplicitDiscoverySpell (uint32 spellId, Player *player)

Function Documentation

TC_GAME_API uint32 GetExplicitDiscoverySpell	(	uint32	spellId,
		Player *	player
	)

{
 // explicit discovery spell chances (always success if case exist)
 // in this case we have both skill and spell
 SkillDiscoveryMap::const_iterator tab = SkillDiscoveryStore.find(int32(spellId));
 if (tab == SkillDiscoveryStore.end())
 return 0;

 SkillLineAbilityMapBounds bounds = sSpellMgr->GetSkillLineAbilityMapBounds(spellId);
 uint32 skillvalue = bounds.first != bounds.second ? player->GetSkillValue(bounds.first->second->SkillLine) : uint32(0);

 float full_chance = 0;
 for (SkillDiscoveryList::const_iterator item_iter = tab->second.begin(); item_iter != tab->second.end(); ++item_iter)
 if (item_iter->reqSkillValue <= skillvalue)
 if (!player->HasSpell(item_iter->spellId))
 full_chance += item_iter->chance;

 float rate = full_chance / 100.0f;
 float roll = (float)rand_chance() * rate; // roll now in range 0..full_chance

 for (SkillDiscoveryList::const_iterator item_iter = tab->second.begin(); item_iter != tab->second.end(); ++item_iter)
 {
 if (item_iter->reqSkillValue > skillvalue)
 continue;

 if (player->HasSpell(item_iter->spellId))
 continue;

 if (item_iter->chance > roll)
 return item_iter->spellId;

 roll -= item_iter->chance;
 }

 return 0;
}

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TC_GAME_API uint32 GetSkillDiscoverySpell	(	uint32	skillId,
		uint32	spellId,
		Player *	player
	)

{
 uint32 skillvalue = skillId ? player->GetSkillValue(skillId) : uint32(0);

 // check spell case
 SkillDiscoveryMap::const_iterator tab = SkillDiscoveryStore.find(int32(spellId));

 if (tab != SkillDiscoveryStore.end())
 {
 for (SkillDiscoveryList::const_iterator item_iter = tab->second.begin(); item_iter != tab->second.end(); ++item_iter)
 {
 if (roll_chance_f(item_iter->chance * sWorld->getRate(RATE_SKILL_DISCOVERY)) &&
 item_iter->reqSkillValue <= skillvalue &&
 !player->HasSpell(item_iter->spellId))
 return item_iter->spellId;
 }

 return 0;
 }

 if (!skillId)
 return 0;

 // check skill line case
 tab = SkillDiscoveryStore.find(-(int32)skillId);
 if (tab != SkillDiscoveryStore.end())
 {
 for (SkillDiscoveryList::const_iterator item_iter = tab->second.begin(); item_iter != tab->second.end(); ++item_iter)
 {
 if (roll_chance_f(item_iter->chance * sWorld->getRate(RATE_SKILL_DISCOVERY)) &&
 item_iter->reqSkillValue <= skillvalue &&
 !player->HasSpell(item_iter->spellId))
 return item_iter->spellId;
 }

 return 0;
 }

 return 0;
}

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TC_GAME_API bool HasDiscoveredAllSpells	(	uint32	spellId,
		Player *	player
	)

{
 SkillDiscoveryMap::const_iterator tab = SkillDiscoveryStore.find(int32(spellId));
 if (tab == SkillDiscoveryStore.end())
 return true;

 for (SkillDiscoveryList::const_iterator item_iter = tab->second.begin(); item_iter != tab->second.end(); ++item_iter)
 if (!player->HasSpell(item_iter->spellId))
 return false;

 return true;
}

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TC_GAME_API void LoadSkillDiscoveryTable

(

)

{
 uint32 oldMSTime = getMSTime();

 SkillDiscoveryStore.clear(); // need for reload

 // 0 1 2 3
 QueryResult result = WorldDatabase.Query("SELECT spellId, reqSpell, reqSkillValue, chance FROM skill_discovery_template");

 if (!result)
 {
 TC_LOG_ERROR("server.loading", ">> Loaded 0 skill discovery definitions. DB table `skill_discovery_template` is empty.");
 return;
 }

 uint32 count = 0;

 std::ostringstream ssNonDiscoverableEntries;
 std::set<uint32> reportedReqSpells;

 do
 {
 Field* fields = result->Fetch();

 uint32 spellId = fields[0].GetUInt32();
 int32 reqSkillOrSpell = fields[1].GetInt32();
 uint32 reqSkillValue = fields[2].GetUInt16();
 float chance = fields[3].GetFloat();

 if (chance <= 0) // chance
 {
 ssNonDiscoverableEntries << "spellId = " << spellId << " reqSkillOrSpell = " << reqSkillOrSpell
 << " reqSkillValue = " << reqSkillValue << " chance = " << chance << "(chance problem)\n";
 continue;
 }

 if (reqSkillOrSpell > 0) // spell case
 {
 uint32 absReqSkillOrSpell = uint32(reqSkillOrSpell);
 SpellInfo const* reqSpellInfo = sSpellMgr->GetSpellInfo(absReqSkillOrSpell);
 if (!reqSpellInfo)
 {
 if (reportedReqSpells.find(absReqSkillOrSpell) == reportedReqSpells.end())
 {
 TC_LOG_ERROR("sql.sql", "Spell (ID: %u) have not existed spell (ID: %i) in `reqSpell` field in `skill_discovery_template` table", spellId, reqSkillOrSpell);
 reportedReqSpells.insert(absReqSkillOrSpell);
 }
 continue;
 }

 // mechanic discovery
 if (reqSpellInfo->Mechanic != MECHANIC_DISCOVERY &&
 // explicit discovery ability
 !reqSpellInfo->IsExplicitDiscovery())
 {
 if (reportedReqSpells.find(absReqSkillOrSpell) == reportedReqSpells.end())
 {
 TC_LOG_ERROR("sql.sql", "Spell (ID: %u) not have MECHANIC_DISCOVERY (28) value in Mechanic field in spell.dbc"
 " and not 100%% chance random discovery ability but listed for spellId %u (and maybe more) in `skill_discovery_template` table",
 absReqSkillOrSpell, spellId);
 reportedReqSpells.insert(absReqSkillOrSpell);
 }
 continue;
 }

 SkillDiscoveryStore[reqSkillOrSpell].push_back(SkillDiscoveryEntry(spellId, reqSkillValue, chance));
 }
 else if (reqSkillOrSpell == 0) // skill case
 {
 SkillLineAbilityMapBounds bounds = sSpellMgr->GetSkillLineAbilityMapBounds(spellId);

 if (bounds.first == bounds.second)
 {
 TC_LOG_ERROR("sql.sql", "Spell (ID: %u) not listed in `SkillLineAbility.dbc` but listed with `reqSpell`=0 in `skill_discovery_template` table", spellId);
 continue;
 }

 for (SkillLineAbilityMap::const_iterator _spell_idx = bounds.first; _spell_idx != bounds.second; ++_spell_idx)
 SkillDiscoveryStore[-int32(_spell_idx->second->SkillLine)].push_back(SkillDiscoveryEntry(spellId, reqSkillValue, chance));
 }
 else
 {
 TC_LOG_ERROR("sql.sql", "Spell (ID: %u) have negative value in `reqSpell` field in `skill_discovery_template` table", spellId);
 continue;
 }

 ++count;
 }
 while (result->NextRow());

 if (!ssNonDiscoverableEntries.str().empty())
 TC_LOG_ERROR("sql.sql", "Some items can't be successfully discovered: have in chance field value < 0.000001 in `skill_discovery_template` DB table . List:\n%s", ssNonDiscoverableEntries.str().c_str());

 // report about empty data for explicit discovery spells
 for (uint32 spell_id = 1; spell_id < sSpellMgr->GetSpellInfoStoreSize(); ++spell_id)
 {
 SpellInfo const* spellEntry = sSpellMgr->GetSpellInfo(spell_id);
 if (!spellEntry)
 continue;

 // skip not explicit discovery spells
 if (!spellEntry->IsExplicitDiscovery())
 continue;

 if (SkillDiscoveryStore.find(int32(spell_id)) == SkillDiscoveryStore.end())
 TC_LOG_ERROR("sql.sql", "Spell (ID: %u) is 100%% chance random discovery ability but not have data in `skill_discovery_template` table", spell_id);
 }

 TC_LOG_INFO("server.loading", ">> Loaded %u skill discovery definitions in %u ms", count, GetMSTimeDiffToNow(oldMSTime));
}

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