feat: hazard system

config.lua.dist

@@ -123,6 +123,20 @@ boostedBossSlot = true
 boostedBossLootBonus = 250
 boostedBossKillBonus = 3
 
+-- Hazard system
+toogleHazardSystem = true
+hazardCriticalInterval = 2000
+hazardCriticalMultiplier = 25
+hazardDamageMultiplier = 200
+hazardDodgeMultiplier = 85
+hazardPodsDropMultiplier = 87
+hazardPodsTimeToDamage = 2000
+hazardPodsTimeToSpawn = 4000
+hazardExpBonusMultiplier = 2
+hazardLootBonusMultiplier = 2
+hazardPodsDamage = 5
+hazardSpawnPlunderMultiplier = 25
+
 -- Familiar system
 -- NOTE: the time will be divided by 2 to get half the value, the familiar lasts 15 minutes by default and the cooldown of the spell is 30 minutes
 -- Only change it here if you know what you are doing or to make testing easier with familiars

data-canary/scripts/lib/register_monster_type.lua

@@ -506,6 +506,23 @@ registerMonsterType.defenses = function(mtype, mask)
 	end
 end
 
+registerMonsterType.hazard = function(mtype, mask)
+	if mask.hazard ~= nil then
+		if mask.hazard.criticalChance ~= nil then
+			mtype:hazardSystemCrit(mask.hazard.criticalChance)
+		end
+		if mask.hazard.canDodge ~= nil then
+			mtype:hazardSystemDodge(mask.hazard.canDodge)
+		end
+		if mask.hazard.canSpawnPod ~= nil then
+			mtype:hazardSystemSpawnPod(mask.hazard.canSpawnPod)
+		end
+		if mask.hazard.canDealMoreDamage ~= nil then
+			mtype:hazardSystemDamageBoost(mask.hazard.canDealMoreDamage)
+		end
+	end
+end
+
 local function loadcastSound(effect, incomingLua, mtype)
 	-- Throw shoottype
 	if effect == CONST_ANI_SPEAR or

data-otservbr-global/scripts/creaturescripts/others/login_events.lua

@@ -116,7 +116,9 @@ function loginEvents.onLogin(player)
 		-- Secret Library
 		"SecretLibraryKill",
 		-- The Dream Courts
-		"DreamCourtsKill"
+		"DreamCourtsKill",
+		-- Hazard System
+		"HazardSystemCombat"
 	}
 
 	for i = 1, #events do

data-otservbr-global/scripts/hazard/hazard_system.lua

@@ -0,0 +1,110 @@
+local hazardSystemStepPod = MoveEvent()
+
+function hazardSystemStepPod.onStepIn(creature, item, position, fromPosition)
+	if not configManager.getBoolean(configKeys.TOGGLE_HAZARDSYSTEM) then
+		item:remove()
+		return
+	end
+
+	local player = creature:getPlayer()
+	if not player then
+		return
+	end
+
+	local timer = item:getCustomAttribute("HazardSystem_PodTimer")
+	if timer then
+		local timeMs = os.time() * 1000
+		timer = timeMs - timer
+		if timer >= configManager.getNumber(configKeys.HAZARD_PODS_TIME_TO_DAMAGE) and timer < configManager.getNumber(configKeys.HAZARD_PODS_TIME_TO_SPAWN) then
+			player:sendCancelMessage("You stepped too late on the primal pod and it explodes.")
+			player:getPosition():sendMagicEffect(CONST_ME_ENERGYHIT)
+			local damage = math.ceil((player:getMaxHealth() * configManager.getNumber(configKeys.HAZARD_PODS_DAMAGE)) / 100)
+			local points = player:getHazardSystemPoints()
+			if points ~= 0 then
+				damage = math.ceil((damage * (100 + points)) / 100)
+			end
+			damage = damage + 500
+			doTargetCombatHealth(0, player, COMBAT_LIFEDRAIN, -damage, -damage, CONST_ME_DRAWBLOOD)
+		end
+	end
+
+	item:remove()
+	return true
+end
+
+hazardSystemStepPod:id(ITEM_PRIMAL_POD)
+hazardSystemStepPod:register()
+
+local SpawnHazardSystemFungosaurus = function(position)
+	local tile = Tile(position)
+	if tile then
+		local podItem = tile:getItemById(ITEM_PRIMAL_POD)
+		if podItem then
+			local monster = Game.createMonster("Fungosaurus", position, false, true)
+			if monster then
+				monster:say("The primal pod explode and wild emerges from it.")
+			end
+			podItem:remove()
+		end
+	end
+end
+
+local hazardSystemSpawnPod = CreatureEvent("HazardSystemCombat")
+
+function hazardSystemSpawnPod.onKill(player, creature, lastHit)
+	if not configManager.getBoolean(configKeys.TOGGLE_HAZARDSYSTEM) then
+		return true
+	end
+
+	local monster = creature:getMonster()
+	if not creature or not monster or not monster:isOnHazardSystem() then
+		return true
+	end
+
+	local points = player:getHazardSystemPoints()
+	if points > 0 then
+		local party = player:getParty()
+		if party then
+			for _, member in ipairs(party:getMembers()) do
+				if member and member:getHazardSystemPoints() < points then
+					points = member:getHazardSystemPoints()
+				end
+			end
+
+			local leader = party:getLeader()
+			if leader and leader:getHazardSystemPoints() < points then
+				points = leader:getHazardSystemPoints()
+			end
+		end
+	end
+
+	if points == 0 then
+		return true
+	end
+
+	local chanceTo = math.random(1, 10000)
+	if chanceTo <= (points * configManager.getNumber(configKeys.HAZARD_PODS_DROP_MULTIPLIER)) then
+		local closesestPosition = player:getClosestFreePosition(monster:getPosition(), 4, true)
+		local primalPod = Game.createItem(ITEM_PRIMAL_POD, 1, closesestPosition.x == 0 and monster:getPosition() or closesestPosition)
+		if primalPod then
+			primalPod:setCustomAttribute("HazardSystem_PodTimer", os.time() * 1000)
+			local podPos = primalPod:getPosition()
+			addEvent(SpawnHazardSystemFungosaurus, configManager.getNumber(configKeys.HAZARD_PODS_TIME_TO_SPAWN), podPos)
+		end
+		return true
+	end
+
+	chanceTo = math.random(1, 10000)
+	if chanceTo <= (points * configManager.getNumber(configKeys.HAZARDSYSTEM_SPAWN_PLUNDER_MULTIPLIER)) then
+		local closesestPosition = player:getClosestFreePosition(monster:getPosition(), 4, true)
+		local monster = Game.createMonster("Plunder Patriarch", closesestPosition.x == 0 and monster:getPosition() or closesestPosition, false, true)
+		if monster then
+			monster:say("The Plunder Patriarch rises from the ashes.")
+		end
+		return true
+	end
+
+	return true
+end
+
+hazardSystemSpawnPod:register()

data-otservbr-global/scripts/lib/register_monster_type.lua

@@ -530,6 +530,23 @@ registerMonsterType.defenses = function(mtype, mask)
 	end
 end
 
+registerMonsterType.hazard = function(mtype, mask)
+	if mask.hazard ~= nil then
+		if mask.hazard.criticalChance ~= nil then
+			mtype:hazardSystemCrit(mask.hazard.criticalChance)
+		end
+		if mask.hazard.canDodge ~= nil then
+			mtype:hazardSystemDodge(mask.hazard.canDodge)
+		end
+		if mask.hazard.canSpawnPod ~= nil then
+			mtype:hazardSystemSpawnPod(mask.hazard.canSpawnPod)
+		end
+		if mask.hazard.canDealMoreDamage ~= nil then
+			mtype:hazardSystemDamageBoost(mask.hazard.canDealMoreDamage)
+		end
+	end
+end
+
 local function loadcastSound(effect, incomingLua, mtype)
 	-- Throw shoottype
 	if effect == CONST_ANI_SPEAR or

data/events/scripts/monster.lua

@@ -34,6 +34,7 @@ function Monster:onDropLoot(corpse)
 	if not player or player:getStamina() > 840 then
 		local monsterLoot = mType:getLoot()
 		local charmBonus = false
+		local hazardMsg = false
 		if player and mType and mType:raceId() > 0 then
 			local charm = player:getCharmMonsterType(CHARM_GUT)
 			if charm and charm:raceId() == mType:raceId() then
@@ -49,6 +50,17 @@ function Monster:onDropLoot(corpse)
 					Spdlog.warn(string.format("[1][Monster:onDropLoot] - Could not add loot item to boosted monster: %s, from corpse id: %d.", self:getName(), corpse:getId()))
 				end
 			end
+			if self:isOnHazardSystem() and player ~= nil then
+				local chanceTo = math.random(1, 100)
+				if chanceTo <= (2 * player:getHazardSystemPoints() * configManager.getNumber(configKeys.HAZARDSYSTEM_LOOT_BONUS_MULTIPLIER)) then
+					local podItem = corpse:createLootItem(monsterLoot[i], charmBonus, preyChanceBoost)
+					if not podItem then
+						Spdlog.warn(string.format("[Monster:onDropLoot] - Could not add loot item to hazard monster: %s, from corpse id: %d.", self:getName(), corpse:getId()))
+					else
+						hazardMsg = true
+					end
+				end
+			end
 			if not item then
 				Spdlog.warn(string.format("[2][Monster:onDropLoot] - Could not add loot item to monster: %s, from corpse id: %d.", self:getName(), corpse:getId()))
 			end
@@ -113,6 +125,9 @@ function Monster:onDropLoot(corpse)
 			if charmBonus then
 				text = text .. " (active charm bonus)"
 			end
+			if hazardMsg then
+				text = text .. " (Hazard system)"
+			end
 			local party = player:getParty()
 			if party then
 				party:broadcastPartyLoot(text)

src/config/config_definitions.hpp

@@ -72,6 +72,7 @@ enum booleanConfig_t {
 	TOGGLE_SERVER_IS_RETRO,
 	TOGGLE_TRAVELS_FREE,
 	OLD_PROTOCOL,
+	TOGGLE_HAZARDSYSTEM,
 
 	LAST_BOOLEAN_CONFIG
 };
@@ -200,6 +201,17 @@ enum integerConfig_t {
 	BOOSTED_BOSS_LOOT_BONUS,
 	BOOSTED_BOSS_KILL_BONUS,
 	FAMILIAR_TIME,
+	HAZARD_CRITICAL_INTERVAL,
+	HAZARD_CRITICAL_MULTIPLIER,
+	HAZARD_DAMAGE_MULTIPLIER,
+	HAZARD_DODGE_MULTIPLIER,
+	HAZARD_PODS_DROP_MULTIPLIER,
+	HAZARD_PODS_TIME_TO_DAMAGE,
+	HAZARD_EXP_BONUS_MULTIPLIER,
+	HAZARD_LOOT_BONUS_MULTIPLIER,
+	HAZARD_PODS_DAMAGE,
+	HAZARD_PODS_TIME_TO_SPAWN,
+	HAZARD_SPAWN_PLUNDER_MULTIPLIER,
 
 	LAST_INTEGER_CONFIG
 };

src/config/configmanager.cpp

@@ -314,6 +314,19 @@ bool ConfigManager::load() {
 	boolean[TOGGLE_SERVER_IS_RETRO] = getGlobalBoolean(L, "toggleServerIsRetroPVP", false);
 	boolean[TOGGLE_TRAVELS_FREE] = getGlobalBoolean(L, "toggleTravelsFree", false);
 
+	boolean[TOGGLE_HAZARDSYSTEM] = getGlobalBoolean(L, "toogleHazardSystem", true);
+	integer[HAZARD_CRITICAL_INTERVAL] = getGlobalNumber(L, "hazardCriticalInterval", 2000);
+	integer[HAZARD_CRITICAL_MULTIPLIER] = getGlobalNumber(L, "hazardCriticalMultiplier", 25);
+	integer[HAZARD_DAMAGE_MULTIPLIER] = getGlobalNumber(L, "hazardDamageMultiplier", 200);
+	integer[HAZARD_DODGE_MULTIPLIER] = getGlobalNumber(L, "hazardDodgeMultiplier", 85);
+	integer[HAZARD_PODS_DROP_MULTIPLIER] = getGlobalNumber(L, "hazardPodsDropMultiplier", 87);
+	integer[HAZARD_PODS_TIME_TO_DAMAGE] = getGlobalNumber(L, "hazardPodsTimeToDamage", 2000);
+	integer[HAZARD_PODS_TIME_TO_SPAWN] = getGlobalNumber(L, "hazardPodsTimeToSpawn", 4000);
+	integer[HAZARD_EXP_BONUS_MULTIPLIER] = getGlobalNumber(L, "hazardExpBonusMultiplier", 2);
+	integer[HAZARD_LOOT_BONUS_MULTIPLIER] = getGlobalNumber(L, "hazardLootBonusMultiplier", 2);
+	integer[HAZARD_PODS_DAMAGE] = getGlobalNumber(L, "hazardPodsDamage", 5);
+	integer[HAZARD_SPAWN_PLUNDER_MULTIPLIER] = getGlobalNumber(L, "hazardSpawnPlunderMultiplier", 25);
+
 	loaded = true;
 	lua_close(L);
 	return true;

src/creatures/monsters/monster.cpp

@@ -302,6 +302,14 @@ void Monster::removeFriend(Creature* creature) {
 	}
 }
 
+void Monster::handleHazardSystem(Creature &creature) const {
+	// Hazard system (Icon UI)
+	auto player = creature.getPlayer();
+	if (player && isOnHazardSystem()) {
+		player->incrementeHazardSystemReference();
+	}
+}
+
 void Monster::addTarget(Creature* creature, bool pushFront /* = false*/) {
 	assert(creature != this);
 	if (std::find(targetList.begin(), targetList.end(), creature) == targetList.end()) {
@@ -313,6 +321,8 @@ void Monster::addTarget(Creature* creature, bool pushFront /* = false*/) {
 		}
 		if (!master && getFaction() != FACTION_DEFAULT && creature->getPlayer())
 			totalPlayersOnScreen++;
+
+		handleHazardSystem(*creature);
 	}
 }
 
@@ -327,6 +337,8 @@ void Monster::removeTarget(Creature* creature) {
 			totalPlayersOnScreen--;
 		}
 
+		handleHazardSystem(*creature);
+
 		creature->decrementReferenceCounter();
 		targetList.erase(it);
 	}
@@ -348,6 +360,7 @@ void Monster::updateTargetList() {
 	while (targetIterator != targetList.end()) {
 		Creature* creature = *targetIterator;
 		if (creature->getHealth() <= 0 || !canSee(creature->getPosition())) {
+			handleHazardSystem(*creature);
 			creature->decrementReferenceCounter();
 			targetIterator = targetList.erase(targetIterator);
 		} else {
@@ -374,6 +387,7 @@ void Monster::clearTargetList() {
 
 void Monster::clearFriendList() {
 	for (Creature* creature : friendList) {
+		handleHazardSystem(*creature);
 		creature->decrementReferenceCounter();
 	}
 	friendList.clear();

src/creatures/monsters/monster.h

@@ -256,6 +256,28 @@ class Monster final : public Creature {
 			return mType->info.raceid;
 		}
 
+		// Hazard system
+		bool isOnHazardSystem() const {
+			return mType->info.hazardSystemCritChance != 0 || mType->info.canSpawnPod || mType->info.canDodge || mType->info.canDamageBoost;
+		}
+
+		bool getHazardSystemDodge() const {
+			return mType->info.canDodge;
+		}
+
+		bool getHazardSystemSpawnPod() const {
+			return mType->info.canSpawnPod;
+		}
+
+		bool getHazardSystemDamageBoost() const {
+			return mType->info.canDamageBoost;
+		}
+
+		uint16_t getHazardSystemCritChance() const {
+			return mType->info.hazardSystemCritChance;
+		}
+		// Hazard end
+
 		void updateTargetList();
 		void clearTargetList();
 		void clearFriendList();
@@ -360,6 +382,7 @@ class Monster final : public Creature {
 
 		void addFriend(Creature* creature);
 		void removeFriend(Creature* creature);
+		void handleHazardSystem(Creature &creature) const;
 		void addTarget(Creature* creature, bool pushFront = false);
 		void removeTarget(Creature* creature);
 

src/creatures/monsters/monsters.h

@@ -83,6 +83,12 @@ class MonsterType {
 
 				uint64_t experience = 0;
 
+				// Hazard system (0-10000), divide by 100 gives us %
+				uint16_t hazardSystemCritChance = 0;
+				bool canDamageBoost = false;
+				bool canSpawnPod = false;
+				bool canDodge = false;
+
 				uint32_t manaCost = 0;
 				uint32_t yellChance = 0;
 				uint32_t yellSpeedTicks = 0;