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

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)
+}