introduce drowning condition, fix monsters to use uniform random, fix poison field on walk instant damage hit, need to check how drowning works and remove damage only when player is idle for 4s

data/movements/scripts/misc/drowning.lua

@@ -0,0 +1,27 @@
+local condition = Condition(CONDITION_DROWN)
+condition:setParameter(CONDITION_PARAM_HIT_DAMAGE, 20)
+condition:setTiming(9999)
+
+
+function onStepIn(creature, item, position, fromPosition)
+	local player = creature:getPlayer()
+	if player == nil then
+		return true
+	end
+
+	if math.random(1, 10) == 1 then
+		position:sendMagicEffect(CONST_ME_BUBBLES)
+	end
+	player:addCondition(condition)
+	return true
+end
+
+function onStepOut(creature, item, position, fromPosition)
+	local player = creature:getPlayer()
+	if player == nil then
+		return true
+	end
+
+	player:removeCondition(CONDITION_DROWN)
+	return true
+end