// ------------------------------------------------------------------------
// 🚀 Project Active8
// 🔗 Active Thing (activething.com) git.activething.com/go
//
//    File name  actor_state.go
// ✍️ Created by DEV
// 📅 Modified   11/12/2024
//
// 🔒 Copyright 2024 activething.com
//  
// 📜 LICENSE --------------------------------------------------------------
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ------------------------------------------------------------------------

package vigil

import "math/bits"


const (
	modeBits            = 4
	modeMask ActorState = 0b1111
)



type ActorState uint16




func (s ActorState) GetMode() ActorMode {
	return ActorMode(s & modeMask) }

func (s ActorState) SetMode(state ActorMode) ActorState {
	return (s &^ modeMask) | (ActorState(state) & modeMask) }




func (s ActorState) HasFlag (flag ActorStateFlags) bool {
	return s & ActorState(flag) != 0 }

func (s ActorState) SetFlag (flag ActorStateFlags) ActorState {
	return (s &^ modeMask) | ((s | ActorState(flag)) &^ modeMask) }

func (s ActorState) DelFlag (flag ActorStateFlags) ActorState {
	return (s &^ modeMask) | ((s &^ ActorState(flag)) &^ modeMask) }

func (s ActorState) ClearFlags () ActorState {
	return s & modeMask }


func (s ActorState) Count() int {
	return bits.OnesCount16(uint16(s) >> modeBits) }

func (s ActorState) Flags() []ActorStateFlags {
	var flags []ActorStateFlags
	for _, flag := range g.actorFlags {
		if s.HasFlag(flag) {
			flags = append(flags, flag)
		}
	}
	return flags
}