CanCraft

OxideCrafting

object CanCraft(ItemCrafter itemCrafter, ItemBlueprint bp, int amount, bool free)
object CanCraft(PlayerBlueprints playerBlueprints, ItemDefinition itemDefinition, int skinItemId)

Works — the game method in this build is the one the hook was written for.

Parameters

itemCrafter: ItemCrafter
bp: ItemBlueprint
amount: int
free: bool

Return value

objectReturn a value of the method's result type and the game returns it immediately; null continues as usual.

Example

object — you can affect the game: return a value to change or cancel the action.

private object CanCraft(ItemCrafter itemCrafter, ItemBlueprint bp, int amount, bool free)
{
    Puts("CanCraft");

    // change nothing — the game continues as usual
    return null;

    // to affect the game:
    // return null; // null — the game continues as usual
}

Works in both Oxide and Carbon: Carbon loads Oxide plugins as is.

Injection point 1

Rust.opj (Oxide)

bool ItemCrafter.CanCraft(ItemBlueprint, int, bool)

Passes: ItemCrafter itemCrafter, ItemBlueprint bp, int amount, bool free

WorksReturnBehavior: ExitWhenValidTypeArgumentBehavior: AllAssembly-CSharp.dll

Where it is called (this branch's game code)

// …
	{
		num += (float)item.amount / (float)item.blueprint.targetItem.craftingStackable;
	}
}
if (num > 8f)
{
	return false;
}
object returnvar = Interface.CallHook("CanCraft", this, bp, amount, free);
if (returnvar is bool)
{
	return (bool)returnvar;
}
if (amount < 1 || amount > bp.targetItem.craftingStackable)
{
	return false;
}
// …

Injection point 2

Rust.opj (Oxide)

bool PlayerBlueprints.CanCraft(int, int, BasePlayer)

Passes: PlayerBlueprints playerBlueprints, ItemDefinition itemDefinition, int skinItemId

WorksReturnBehavior: ExitWhenValidTypeArgumentBehavior: UseArgumentString (this, l0, a1)Assembly-CSharp.dll

Where it is called (this branch's game code)

public bool CanCraft(int itemid, int skinItemId, BasePlayer player)
{
	ItemDefinition itemDefinition = ItemManager.FindItemDefinition(itemid);
	if (itemDefinition == null)
	{
		return false;
	}
	object returnvar = Interface.CallHook("CanCraft", this, itemDefinition, skinItemId);
	if (returnvar is bool)
	{
		return (bool)returnvar;
	}
	if (skinItemId != 0 && !CheckSkinOwnership(skinItemId, player))
	{
		return false;
	}
// …

Sources: Rust.opj from OxideMod/Oxide.Rust (MIT) and hook metadata of the Carbon documentation (MIT). Method code is decompiled from this branch's server.