Add support for protocol version 800 (1.21.80)

Introduced support for protocol 800, including biome definitions, camera presets, and player list updates. Upgraded dependencies, adjusted mappings, and enhanced the README to reflect recent changes.

legacyver/proto/camera.go

@@ -55,6 +55,18 @@ type CameraPreset struct {
 	AlignTargetAndCameraForward protocol.Optional[bool]
 	// AimAssist defines the aim assist to use when using this preset.
 	AimAssist protocol.Optional[protocol.CameraPresetAimAssist]
+	// ControlScheme is the control scheme that the client should use in this camera. It is one of the following:
+	//  - ControlSchemeLockedPlayerRelativeStrafe is the default behaviour, this cannot be set when the client
+	//    is in a custom camera.
+	//  - ControlSchemeCameraRelative makes movement relative to the camera's transform, with the client's
+	//    rotation being relative to the client's movement.
+	//  - ControlSchemeCameraRelativeStrafe makes movement relative to the camera's transform, with the
+	//    client's rotation being locked.
+	//  - ControlSchemePlayerRelative makes movement relative to the player's transform, meaning holding
+	//    left/right will make the player turn in a circle.
+	//  - ControlSchemePlayerRelativeStrafe makes movement the same as the default behaviour, but can be
+	//    used in a custom camera.
+	ControlScheme protocol.Optional[byte]
 }
 
 func (x *CameraPreset) FromLatest(cp protocol.CameraPreset) CameraPreset {
@@ -78,6 +90,7 @@ func (x *CameraPreset) FromLatest(cp protocol.CameraPreset) CameraPreset {
 	x.PlayerEffects = cp.PlayerEffects
 	x.AlignTargetAndCameraForward = cp.AlignTargetAndCameraForward
 	x.AimAssist = cp.AimAssist
+	x.ControlScheme = cp.ControlScheme
 	return *x
 }
 
@@ -105,6 +118,7 @@ func (x *CameraPreset) ToLatest() protocol.CameraPreset {
 		PlayerEffects:               x.PlayerEffects,
 		AlignTargetAndCameraForward: x.AlignTargetAndCameraForward,
 		AimAssist:                   x.AimAssist,
+		ControlScheme:               x.ControlScheme,
 	}
 }
 
@@ -146,4 +160,7 @@ func (x *CameraPreset) Marshal(r protocol.IO) {
 	if IsProtoGTE(r, ID766) {
 		protocol.OptionalMarshaler(r, &x.AimAssist)
 	}
+	if IsProtoGTE(r, ID800) {
+		protocol.OptionalFunc(r, &x.ControlScheme, r.Uint8)
+	}
 }