add player package with key client-side player functionality, update protocol codecs, and refactor metadata definitions and slot usage

pkg/bot/client.go

@@ -0,0 +1,29 @@
+package bot
+
+import (
+	"context"
+
+	"git.konjactw.dev/patyhank/minego/pkg/auth"
+	"git.konjactw.dev/patyhank/minego/pkg/protocol/packet/game/server"
+)
+
+type Client interface {
+	Connect(ctx context.Context, addr string, options *ConnectOptions) error
+	Close(ctx context.Context) error
+	IsConnected() bool
+	WritePacket(ctx context.Context, packet server.ServerboundPacket) error
+
+	PacketHandler() PacketHandler
+	EventHandler() EventHandler
+	World() World
+	Inventory() InventoryHandler
+	Player() Player
+}
+
+type ClientOptions struct {
+	AuthProvider auth.Provider
+}
+
+type ConnectOptions struct {
+	FakeHost string
+}

pkg/bot/event.go

@@ -0,0 +1,20 @@
+package bot
+
+type EventHandler interface {
+	PublishEvent(event string, data any) error
+	SubscribeEvent(event string, handler func(data any) error)
+}
+
+type Event interface {
+	EventID() string
+}
+
+func PublishEvent(client Client, event Event) error {
+	return client.EventHandler().PublishEvent(event.EventID(), event)
+}
+
+func SubscribeEvent(client Client, event string, handler func(event Event) error) {
+	client.EventHandler().SubscribeEvent(event, func(data any) error {
+		return handler(data.(Event))
+	})
+}

pkg/bot/handler.go

@@ -0,0 +1,24 @@
+package bot
+
+import (
+	"context"
+
+	"git.konjactw.dev/patyhank/minego/pkg/protocol/packet/game/client"
+	"github.com/Tnze/go-mc/data/packetid"
+)
+
+type PacketHandler interface {
+	AddPacketHandler(id packetid.ClientboundPacketID, handler func(ctx context.Context, p client.ClientboundPacket))
+	AddGenericPacketHandler(handler func(ctx context.Context, p client.ClientboundPacket))
+	HandlePacket(ctx context.Context, p client.ClientboundPacket)
+}
+
+type HandlerFunc[T client.ClientboundPacket] func(ctx context.Context, p T)
+
+func AddHandler[T client.ClientboundPacket](c Client, f HandlerFunc[T]) {
+	var t T
+	handler := c.PacketHandler()
+	handler.AddPacketHandler(t.PacketID(), func(ctx context.Context, p client.ClientboundPacket) {
+		f(ctx, p.(T))
+	})
+}

pkg/bot/inventory.go

@@ -0,0 +1,23 @@
+package bot
+
+import (
+	"git.konjactw.dev/patyhank/minego/pkg/protocol/slot"
+	"github.com/Tnze/go-mc/level/item"
+)
+
+type Container interface {
+	GetSlot(index int) slot.Slot
+	Slots() []slot.Slot
+	SlotCount() int
+	FindEmpty() int16
+	FindItem(itemID item.ID) int16
+	Click(slot int16, mode int32, button int32) error
+}
+
+type InventoryHandler interface {
+	Inventory() Container
+	Container() Container
+	CurrentContainerID() int32
+	Click(container int32, slot int16, mode int32, button int32) error
+	Close()
+}

pkg/bot/player.go

@@ -0,0 +1,25 @@
+package bot
+
+import (
+	"git.konjactw.dev/patyhank/minego/pkg/protocol"
+	"github.com/go-gl/mathgl/mgl64"
+)
+
+type Player interface {
+	StateID() int32
+	UpdateStateID(id int32)
+	Entity() Entity
+
+	FlyTo(pos mgl64.Vec3) error
+	WalkTo(pos mgl64.Vec3) error
+	LookAt(vec3 mgl64.Vec3) error
+
+	BreakBlock(pos protocol.Position) error
+	PlaceBlock(pos protocol.Position) error
+	PlaceBlockWithArgs(pos protocol.Position, face int32, cursor mgl64.Vec3) error
+	OpenContainer(pos protocol.Position) (Container, error)
+
+	UseItem(hand int8) error
+
+	OpenMenu(command string) (Container, error)
+}

pkg/bot/world.go

@@ -0,0 +1,35 @@
+package bot
+
+import (
+	"git.konjactw.dev/patyhank/minego/pkg/protocol"
+	"git.konjactw.dev/patyhank/minego/pkg/protocol/metadata"
+	"git.konjactw.dev/patyhank/minego/pkg/protocol/slot"
+	"github.com/Tnze/go-mc/data/entity"
+	"github.com/Tnze/go-mc/level/block"
+	"github.com/go-gl/mathgl/mgl64"
+	"github.com/google/uuid"
+)
+
+type World interface {
+	GetBlock(pos protocol.Position) (block.Block, error)
+	SetBlock(pos protocol.Position, b block.Block) error
+
+	GetNearbyBlocks(pos protocol.Position, radius int32) ([]block.Block, error)
+	FindNearbyBlock(pos protocol.Position, radius int32, blk block.Block) (protocol.Position, error)
+
+	Entities() []Entity
+	GetEntity(id int32) Entity
+	GetNearbyEntities(radius int32) []Entity
+	GetEntitiesByType(entityType entity.ID) []Entity
+}
+
+type Entity interface {
+	ID() int32
+	UUID() uuid.UUID
+	Type() entity.ID
+	Position() mgl64.Vec3
+	Rotation() mgl64.Vec2
+
+	Metadata() map[uint8]metadata.Metadata
+	Equipment() map[int8]slot.Slot
+}