How can I detect if a player is buying an item from a shop?

[marvey323]

More specifically, is there a way to set a variable to the amount of gold spent when a player buys a shop item ? I am trying to restrict a player from buying something if his level is too low for the item and this would help.

Edit :

I actually would just need to know how to detect if a player has targetted a shop to buy an item. So the event of clicking on a shop ?

 

[WaterKnight]

There is the unit event EVENT_UNIT_SELL_ITEM (playerunitevent EVENT_PLAYER_UNIT_SELL_ITEM).

GetSoldItem() returns the sold item, GetBuyingUnit() the buyer.

To get an item's gold cost, you can presave them in a data structure or make a workaround à la "order dummy shop to sell the item and look at the gold count before and after".

 

[pOke]

If this is a single player map you could Add the Item that needs a higher level only when their unit reaches that level.

 

[deathismyfriend]

Do like said above use a item gold cost system to get the gold the item costs. Then use the event to check if unit sells item.
Use an ITE to check if that unit is required lvl to buy the item. If it is not the required lvl remove the item add back gold / lumber and display a message.

I have a item / unit gold / lumber cost system in the spell section that you can use.
http://www.hiveworkshop.com/forums/spells-569/item-unit-cost-system-v1-0-0-3-a-245280/

 

[Licheus]

Edit :

I actually would just need to know how to detect if a player has targetted a shop to buy an item. So the event of clicking on a shop ?

Something like this?

Shop Selection Trigger

• Shop Selection
  • Events
    • Player - Player 1 (Red) Selects a unit
  • Conditions
    • (Unit-type of (Triggering unit)) Equal to Goblin Merchant
  • Actions

 

[Maker]

The trigger of Licheus should work, however if you have multiple shop types, you might get away with it by checking level of Shop Puchase Item ability for the shop.