Installation Pre 1.4

• Open data/global.lua.
• Add somewhere on top

dofile('data/upgrade_system_core.lua')

• Open data/events/events.xml.
• Make sure you have enabled

<event class="Creature" method="onTargetCombat" enabled="1" />

<event class="Player" method="onLook" enabled="1" />
<event class="Player" method="onMoveItem" enabled="1" />
<event class="Player" method="onItemMoved" enabled="1" />
<event class="Player" method="onGainExperience" enabled="1" />

• Open data/events/scripts/player.lua.
• Find Player:onLook.
• Add after local description = "You see " .. thing:getDescription(distance)

description = onItemUpgradeLook(self, thing, position, distance, description)

• Find Player:onMoveItem.
• Change return true from last line to

return us_onMoveItem(self, item, fromPosition, toPosition)

• Find Player:onItemMoved.
• Add inside

onUpgradeMoved(self, item, count, fromPosition, toPosition, fromCylinder, toCylinder)

• Find Player:onGainExperience.
• Add at the end before return exp

exp = us_onGainExperience(self, source, exp, rawExp)

• Open data/events/scripts/creature.lua.
• Find Creature:onTargetCombat.
• Add somewhere (the best place is after all events, before any event that calculates damage, like DPS Counter)

target:registerEvent("UpgradeSystemHealth")
target:registerEvent("UpgradeSystemDeath")

• Open data/actions/actions.xml.
• This is important part, you have to specify items ID for crystals, scroll of identification and crystal extractor. I have created custom items for myself and IDs are one after another so I'm using fromid and toid. I hope you can handle it.

<action fromid="26383" toid="26389" script="upgrade_system_actions.lua" /> <!-- Crystals and Scroll -->
<action fromid="26393" toid="26396" script="upgrade_system_actions.lua" /> <!-- Crystals -->
<action itemid="26391" script="upgrade_system_tool.lua" /> <!-- Crystal Extractor -->

• Open data/creaturescripts/creaturescripts.xml.
• Add

<event type="login" name="UpgradeSystemLogin" script="upgrade_system_cs.lua" />
<event type="death" name="UpgradeSystemDeath" script="upgrade_system_cs.lua" />
<event type="kill" name="UpgradeSystemKill" script="upgrade_system_cs.lua" />
<event type="healthchange" name="UpgradeSystemHealth" script="upgrade_system_cs.lua" />
<event type="manachange" name="UpgradeSystemMana" script="upgrade_system_cs.lua" />
<event type="preparedeath" name="UpgradeSystemPD" script="upgrade_system_cs.lua" />

• Download 2.4.10 version from Release Page.
• Extract and copy content of the archive into your data.