diff options
Diffstat (limited to 'internal/player/player.go')
| -rw-r--r-- | internal/player/player.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/internal/player/player.go b/internal/player/player.go index f8d9a68..efa906b 100644 --- a/internal/player/player.go +++ b/internal/player/player.go @@ -510,6 +510,12 @@ func (p *Player) CountItem(itemID string) int { } func (p *Player) RemoveItem(itemID string, qty int) bool { + // A non-positive quantity must never mutate a stack: with qty < 0 the + // subtraction below would increase it. Callers pass positive quantities; + // reject anything else instead of creating items from a data typo. + if qty <= 0 { + return false + } remaining := qty for i, slot := range p.Inventory { if slot == nil || slot.ItemID != itemID { |