canary/data/scripts/movements/trap.lua

local traps = {
	[2145] = { transformTo = 2146, damage = { -50, -100 } },
	[2148] = { damage = { -50, -100 } },
	[3482] = { transformTo = 3481, damage = { -15, -30 }, ignorePlayer = (Game.getWorldType() == WORLD_TYPE_NO_PVP) },
	[3944] = { transformTo = 3945, damage = { -15, -30 }, type = COMBAT_EARTHDAMAGE },
	[12368] = { ignorePlayer = true },
}

local trap = MoveEvent()

function trap.onStepIn(creature, item, position, fromPosition)
	local trap = traps[item.itemid]
	if not trap then
		return true
	end

	local tile = Tile(position)
	if not tile then
		return true
	end

	if tile:hasFlag(TILESTATE_PROTECTIONZONE) then
		return true
	end

	if tile:getItemCountById(3482) > 1 then
		return true
	end

	if trap.ignorePlayer and creature:isPlayer() then
		return true
	end

	if trap.transformTo then
		item:transform(trap.transformTo)
	end

	if item.itemid == 12368 and creature:getName() == "Starving Wolf" then
		position:sendMagicEffect(CONST_ME_STUN)
		creature:remove()
		Game.createItem(12369, 1, position)
	else
		doTargetCombatHealth(0, creature, trap.type or COMBAT_PHYSICALDAMAGE, trap.damage[1], trap.damage[2], CONST_ME_NONE)
	end

	return true
end

trap:type("stepin")
for itemId, info in pairs(traps) do
	trap:id(itemId)
end

trap:register()

trap = MoveEvent()

function trap.onStepOut(creature, item, position, fromPosition)
	if Tile(position):hasFlag(TILESTATE_PROTECTIONZONE) then
		return true
	end

	item:transform(item.itemid - 1)
	return true
end

trap:type("stepout")
trap:id(2146, 3945)
trap:register()

trap = MoveEvent()

function trap.onRemoveItem(item, position)
	local itemPosition = item:getPosition()
	if itemPosition:getDistance(position) > 0 then
		item:transform(item.itemid - 1)
		itemPosition:sendMagicEffect(CONST_ME_POFF)
	end
	return true
end

trap:type("removeitem")
trap:id(3482)
trap:register()