up3

server/item/goat_horn.go

@@ -0,0 +1,58 @@
+package item
+
+import (
+	"github.com/df-mc/dragonfly/server/world"
+	"github.com/df-mc/dragonfly/server/world/sound"
+	"time"
+)
+
+// GoatHorn is an item dropped by goats. It has eight variants, and each plays a unique sound when used which can be
+// heard by players in a large radius.
+type GoatHorn struct {
+	nopReleasable
+
+	// Type is the type of the goat horn, determining the sound it plays.
+	Type sound.Horn
+}
+
+// MaxCount ...
+func (GoatHorn) MaxCount() int {
+	return 1
+}
+
+// Cooldown ...
+func (GoatHorn) Cooldown() time.Duration {
+	return time.Second * 7
+}
+
+// Use ...
+func (g GoatHorn) Use(tx *world.Tx, user User, _ *UseContext) bool {
+	tx.PlaySound(user.Position(), sound.GoatHorn{Horn: g.Type})
+	time.AfterFunc(time.Second, func() {
+		user.H().ExecWorld(g.releaseItem)
+	})
+	return true
+}
+
+// releaseItem releases the goat horn item if a user is still using it.
+func (g GoatHorn) releaseItem(_ *world.Tx, e world.Entity) {
+	user := e.(User)
+	if !user.UsingItem() {
+		// We aren't using the goat horn anymore.
+		return
+	}
+	held, _ := user.HeldItems()
+	if _, ok := held.Item().(GoatHorn); !ok {
+		// We aren't holding the goat horn anymore.
+		return
+	}
+	// The goat horn is forcefully released by the server after a second. If the
+	// client released the item itself, before a second, this shouldn't do
+	// anything.
+	user.ReleaseItem()
+}
+
+// EncodeItem ...
+func (g GoatHorn) EncodeItem() (name string, meta int16) {
+	return "minecraft:goat_horn", int16(g.Type.Uint8())
+}