add license and fix some bugs

pkg/protocol/packet/packets.go

@@ -0,0 +1,66 @@
+package packet
+
+import (
+	"git.konjactw.dev/falloutBot/go-mc/data/packetid"
+	pk "git.konjactw.dev/falloutBot/go-mc/net/packet"
+)
+import loginclient "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/login/client"
+import gameclient "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/game/client"
+import configclient "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/configuration/client"
+import loginserver "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/login/server"
+import gameserver "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/game/server"
+import configserver "git.konjactw.dev/patyhank/minego/pkg/protocol/packet/configuration/server"
+
+type ServerboundPacket interface {
+	pk.Field
+	PacketID() packetid.ServerboundPacketID
+}
+
+type ClientboundPacket interface {
+	pk.Field
+	PacketID() packetid.ClientboundPacketID
+}
+
+type State int32
+
+const (
+	StateLogin State = iota
+	StateConfig
+	StatePlay
+)
+
+func GetClientPacket(state State, id int32) ClientboundPacket {
+	switch state {
+	case StateLogin:
+		return loginclient.ClientboundPackets[packetid.ClientboundPacketID(id)]()
+	case StateConfig:
+		return configclient.ClientboundPackets[packetid.ClientboundPacketID(id)]()
+	case StatePlay:
+		return gameclient.ClientboundPackets[packetid.ClientboundPacketID(id)]()
+	}
+	return nil
+}
+
+func GetServerPacket(state State, id int32) ServerboundPacket {
+	switch state {
+	case StateLogin:
+		creator := loginserver.ServerboundPackets[packetid.ServerboundPacketID(id)]
+		if creator == nil {
+			return nil
+		}
+		return creator()
+	case StateConfig:
+		creator := configserver.ServerboundPackets[packetid.ServerboundPacketID(id)]
+		if creator == nil {
+			return nil
+		}
+		return creator()
+	case StatePlay:
+		creator := gameserver.ServerboundPackets[packetid.ServerboundPacketID(id)]
+		if creator == nil {
+			return nil
+		}
+		return creator()
+	}
+	return nil
+}