up3

server/item/enchantment/punch.go

@@ -0,0 +1,48 @@
+package enchantment
+
+import (
+	"github.com/df-mc/dragonfly/server/item"
+	"github.com/df-mc/dragonfly/server/world"
+)
+
+// Punch increases the knock-back dealt when hitting a player or mob with a bow.
+var Punch punch
+
+type punch struct{}
+
+// Name ...
+func (punch) Name() string {
+	return "Punch"
+}
+
+// MaxLevel ...
+func (punch) MaxLevel() int {
+	return 2
+}
+
+// Cost ...
+func (punch) Cost(level int) (int, int) {
+	minCost := 12 + (level-1)*20
+	return minCost, minCost + 25
+}
+
+// Rarity ...
+func (punch) Rarity() item.EnchantmentRarity {
+	return item.EnchantmentRarityRare
+}
+
+// KnockBackMultiplier returns the punch multiplier for the level and horizontal speed.
+func (punch) KnockBackMultiplier() float64 {
+	return 0.25
+}
+
+// CompatibleWithEnchantment ...
+func (punch) CompatibleWithEnchantment(item.EnchantmentType) bool {
+	return true
+}
+
+// CompatibleWithItem ...
+func (punch) CompatibleWithItem(i world.Item) bool {
+	_, ok := i.(item.Bow)
+	return ok
+}