Add 1.21.2 & 1.21.0 support

legacyver/proto/entity_link.go

@@ -0,0 +1,56 @@
+package proto
+
+import "github.com/sandertv/gophertunnel/minecraft/protocol"
+
+// EntityLink is a link between two entities, typically being one entity riding another.
+type EntityLink struct {
+	// RiddenEntityUniqueID is the entity unique ID of the entity that is being ridden. For a player sitting
+	// in a boat, this is the unique ID of the boat.
+	RiddenEntityUniqueID int64
+	// RiderEntityUniqueID is the entity unique ID of the entity that is riding. For a player sitting in a
+	// boat, this is the unique ID of the player.
+	RiderEntityUniqueID int64
+	// Type is one of the types above. It specifies the way the entity is linked to another entity.
+	Type byte
+	// Immediate is set to immediately dismount an entity from another. This should be set when the mount of
+	// an entity is killed.
+	Immediate bool
+	// RiderInitiated specifies if the link was created by the rider, for example the player starting to ride
+	// a horse by itself. This is generally true in vanilla environment for players.
+	RiderInitiated bool
+	// VehicleAngularVelocity is the angular velocity of the vehicle that the rider is riding.
+	VehicleAngularVelocity float32
+}
+
+func (x *EntityLink) FromLatest(link protocol.EntityLink) EntityLink {
+	x.RiddenEntityUniqueID = link.RiddenEntityUniqueID
+	x.RiderEntityUniqueID = link.RiderEntityUniqueID
+	x.Type = link.Type
+	x.Immediate = link.Immediate
+	x.RiderInitiated = link.RiderInitiated
+	x.VehicleAngularVelocity = link.VehicleAngularVelocity
+	return *x
+}
+
+func (x *EntityLink) ToLatest() protocol.EntityLink {
+	return protocol.EntityLink{
+		RiddenEntityUniqueID:   x.RiddenEntityUniqueID,
+		RiderEntityUniqueID:    x.RiderEntityUniqueID,
+		Type:                   x.Type,
+		Immediate:              x.Immediate,
+		RiderInitiated:         x.RiderInitiated,
+		VehicleAngularVelocity: x.VehicleAngularVelocity,
+	}
+}
+
+// Marshal encodes/decodes a single entity link.
+func (x *EntityLink) Marshal(r protocol.IO) {
+	r.Varint64(&x.RiddenEntityUniqueID)
+	r.Varint64(&x.RiderEntityUniqueID)
+	r.Uint8(&x.Type)
+	r.Bool(&x.Immediate)
+	r.Bool(&x.RiderInitiated)
+	if IsProtoGTE(r, ID712) {
+		r.Float32(&x.VehicleAngularVelocity)
+	}
+}