github.com/df-mc/dragonfly@v0.9.13/server/item/enchantment/knock_back.go (about) 1 package enchantment 2 3 import ( 4 "github.com/df-mc/dragonfly/server/item" 5 "github.com/df-mc/dragonfly/server/world" 6 ) 7 8 // KnockBack is an enchantment to a sword that increases the sword's knock-back. 9 type KnockBack struct{} 10 11 // Name ... 12 func (KnockBack) Name() string { 13 return "Knockback" 14 } 15 16 // MaxLevel ... 17 func (KnockBack) MaxLevel() int { 18 return 2 19 } 20 21 // Cost ... 22 func (KnockBack) Cost(level int) (int, int) { 23 min := 5 + (level-1)*20 24 return min, min + 50 25 } 26 27 // Rarity ... 28 func (KnockBack) Rarity() item.EnchantmentRarity { 29 return item.EnchantmentRarityUncommon 30 } 31 32 // Force returns the increase in knock-back force from the enchantment. 33 func (KnockBack) Force(level int) float64 { 34 return float64(level) / 2 35 } 36 37 // CompatibleWithEnchantment ... 38 func (KnockBack) CompatibleWithEnchantment(item.EnchantmentType) bool { 39 return true 40 } 41 42 // CompatibleWithItem ... 43 func (KnockBack) CompatibleWithItem(i world.Item) bool { 44 t, ok := i.(item.Tool) 45 return ok && t.ToolType() == item.TypeSword 46 }