/
entitymgr.go
376 lines (312 loc) · 11.7 KB
/
entitymgr.go
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package runtime
import (
"fmt"
"git.golaxy.org/core/ec"
"git.golaxy.org/core/event"
"git.golaxy.org/core/internal/concurrent"
"git.golaxy.org/core/internal/exception"
"git.golaxy.org/core/service"
"git.golaxy.org/core/util/container"
"git.golaxy.org/core/util/generic"
"git.golaxy.org/core/util/iface"
"git.golaxy.org/core/util/uid"
)
// EntityMgr 实体管理器接口
type EntityMgr interface {
concurrent.CurrentContextProvider
// AddEntity 添加实体
AddEntity(entity ec.Entity) error
// RemoveEntity 删除实体
RemoveEntity(id uid.Id)
// GetEntity 查询实体
GetEntity(id uid.Id) (ec.Entity, bool)
// ContainsEntity 实体是否存在
ContainsEntity(id uid.Id) bool
// RangeEntities 遍历所有实体
RangeEntities(fun generic.Func1[ec.Entity, bool])
// ReversedRangeEntities 反向遍历所有实体
ReversedRangeEntities(fun generic.Func1[ec.Entity, bool])
// FilterEntities 过滤并获取实体
FilterEntities(fun generic.Func1[ec.Entity, bool]) []ec.Entity
// GetEntities 获取所有实体
GetEntities() []ec.Entity
// CountEntities 获取实体数量
CountEntities() int
iAutoEventEntityMgrAddEntity // 事件:实体管理器添加实体
iAutoEventEntityMgrRemoveEntity // 事件:实体管理器删除实体
iAutoEventEntityMgrEntityAddComponents // 事件:实体管理器中的实体添加组件
iAutoEventEntityMgrEntityRemoveComponent // 事件:实体管理器中的实体删除组件
iAutoEventEntityMgrEntityFirstAccessComponent // 事件:实体管理器中的实体首次访问组件
}
type _EntityInfo struct {
element *container.Element[iface.FaceAny]
hooks [3]event.Hook
}
type _EntityMgrBehavior struct {
ctx Context
entityIdx map[uid.Id]_EntityInfo
entityList container.List[iface.FaceAny]
treeNodes map[uid.Id]_TreeNode
eventEntityMgrAddEntity event.Event
eventEntityMgrRemoveEntity event.Event
eventEntityMgrEntityAddComponents event.Event
eventEntityMgrEntityRemoveComponent event.Event
eventEntityMgrEntityFirstAccessComponent event.Event
eventEntityTreeAddChild event.Event
eventEntityTreeRemoveChild event.Event
}
func (mgr *_EntityMgrBehavior) init(ctx Context) {
if ctx == nil {
panic(fmt.Errorf("%w: %w: ctx is nil", ErrEntityMgr, exception.ErrArgs))
}
mgr.ctx = ctx
mgr.entityIdx = map[uid.Id]_EntityInfo{}
mgr.treeNodes = map[uid.Id]_TreeNode{}
ctx.ActivateEvent(&mgr.eventEntityMgrAddEntity, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityMgrRemoveEntity, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityMgrEntityAddComponents, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityMgrEntityRemoveComponent, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityMgrEntityFirstAccessComponent, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityTreeAddChild, event.EventRecursion_Allow)
ctx.ActivateEvent(&mgr.eventEntityTreeRemoveChild, event.EventRecursion_Allow)
}
func (mgr *_EntityMgrBehavior) changeRunningState(state RunningState) {
switch state {
case RunningState_Starting:
mgr.RangeEntities(func(entity ec.Entity) bool {
_EmitEventEntityMgrAddEntity(mgr, mgr, entity)
return true
})
case RunningState_Terminating:
mgr.ReversedRangeEntities(func(entity ec.Entity) bool {
entity.DestroySelf()
return true
})
case RunningState_Terminated:
mgr.eventEntityMgrAddEntity.Close()
mgr.eventEntityMgrRemoveEntity.Close()
mgr.eventEntityMgrEntityAddComponents.Close()
mgr.eventEntityMgrEntityRemoveComponent.Close()
mgr.eventEntityMgrEntityFirstAccessComponent.Close()
mgr.eventEntityTreeAddChild.Close()
mgr.eventEntityTreeRemoveChild.Close()
}
}
// GetCurrentContext 获取当前上下文
func (mgr *_EntityMgrBehavior) GetCurrentContext() iface.Cache {
return mgr.ctx.GetCurrentContext()
}
// GetConcurrentContext 获取多线程安全的上下文
func (mgr *_EntityMgrBehavior) GetConcurrentContext() iface.Cache {
return mgr.ctx.GetConcurrentContext()
}
// AddEntity 添加实体
func (mgr *_EntityMgrBehavior) AddEntity(entity ec.Entity) error {
return mgr.addEntity(entity, uid.Nil)
}
// RemoveEntity 删除实体
func (mgr *_EntityMgrBehavior) RemoveEntity(id uid.Id) {
mgr.removeEntity(id)
}
// GetEntity 查询实体
func (mgr *_EntityMgrBehavior) GetEntity(id uid.Id) (ec.Entity, bool) {
entityInfo, ok := mgr.entityIdx[id]
if !ok {
return nil, false
}
if entityInfo.element.Escaped() {
return nil, false
}
return iface.Cache2Iface[ec.Entity](entityInfo.element.Value.Cache), true
}
// ContainsEntity 实体是否存在
func (mgr *_EntityMgrBehavior) ContainsEntity(id uid.Id) bool {
_, ok := mgr.entityIdx[id]
return ok
}
// RangeEntities 遍历所有实体
func (mgr *_EntityMgrBehavior) RangeEntities(fun generic.Func1[ec.Entity, bool]) {
mgr.entityList.Traversal(func(e *container.Element[iface.FaceAny]) bool {
return fun.Exec(iface.Cache2Iface[ec.Entity](e.Value.Cache))
})
}
// ReversedRangeEntities 反向遍历所有实体
func (mgr *_EntityMgrBehavior) ReversedRangeEntities(fun generic.Func1[ec.Entity, bool]) {
mgr.entityList.ReversedTraversal(func(e *container.Element[iface.FaceAny]) bool {
return fun.Exec(iface.Cache2Iface[ec.Entity](e.Value.Cache))
})
}
// FilterEntities 过滤并获取实体
func (mgr *_EntityMgrBehavior) FilterEntities(fun generic.Func1[ec.Entity, bool]) []ec.Entity {
var entities []ec.Entity
mgr.entityList.Traversal(func(e *container.Element[iface.FaceAny]) bool {
entity := iface.Cache2Iface[ec.Entity](e.Value.Cache)
if fun.Exec(entity) {
entities = append(entities, entity)
}
return true
})
return entities
}
// GetEntities 获取所有实体
func (mgr *_EntityMgrBehavior) GetEntities() []ec.Entity {
entities := make([]ec.Entity, 0, mgr.entityList.Len())
mgr.entityList.Traversal(func(e *container.Element[iface.FaceAny]) bool {
entities = append(entities, iface.Cache2Iface[ec.Entity](e.Value.Cache))
return true
})
return entities
}
// CountEntities 获取实体数量
func (mgr *_EntityMgrBehavior) CountEntities() int {
return mgr.entityList.Len()
}
// EventEntityMgrAddEntity 事件:实体管理器添加实体
func (mgr *_EntityMgrBehavior) EventEntityMgrAddEntity() event.IEvent {
return &mgr.eventEntityMgrAddEntity
}
// EventEntityMgrRemoveEntity 事件:实体管理器删除实体
func (mgr *_EntityMgrBehavior) EventEntityMgrRemoveEntity() event.IEvent {
return &mgr.eventEntityMgrRemoveEntity
}
// EventEntityMgrEntityAddComponents 事件:实体管理器中的实体添加组件
func (mgr *_EntityMgrBehavior) EventEntityMgrEntityAddComponents() event.IEvent {
return &mgr.eventEntityMgrEntityAddComponents
}
// EventEntityMgrEntityRemoveComponent 事件:实体管理器中的实体删除组件
func (mgr *_EntityMgrBehavior) EventEntityMgrEntityRemoveComponent() event.IEvent {
return &mgr.eventEntityMgrEntityRemoveComponent
}
// EventEntityMgrEntityFirstAccessComponent 事件:实体管理器中的实体首次访问组件
func (mgr *_EntityMgrBehavior) EventEntityMgrEntityFirstAccessComponent() event.IEvent {
return &mgr.eventEntityMgrEntityFirstAccessComponent
}
func (mgr *_EntityMgrBehavior) OnComponentMgrAddComponents(entity ec.Entity, components []ec.Component) {
for i := range components {
comp := components[i]
if comp.GetId().IsNil() {
ec.UnsafeComponent(comp).SetId(uid.New())
}
}
_EmitEventEntityMgrEntityAddComponentsWithInterrupt(mgr, func(entityMgr EntityMgr, entity ec.Entity, components []ec.Component) bool {
return entity.GetState() > ec.EntityState_Living
}, mgr, entity, components)
}
func (mgr *_EntityMgrBehavior) OnComponentMgrRemoveComponent(entity ec.Entity, component ec.Component) {
_EmitEventEntityMgrEntityRemoveComponentWithInterrupt(mgr, func(entityMgr EntityMgr, entity ec.Entity, component ec.Component) bool {
return entity.GetState() > ec.EntityState_Living
}, mgr, entity, component)
}
func (mgr *_EntityMgrBehavior) OnComponentMgrFirstAccessComponent(entity ec.Entity, component ec.Component) {
_EmitEventEntityMgrEntityFirstAccessComponentWithInterrupt(mgr, func(entityMgr EntityMgr, entity ec.Entity, component ec.Component) bool {
return entity.GetState() > ec.EntityState_Living
}, mgr, entity, component)
}
func (mgr *_EntityMgrBehavior) addEntity(entity ec.Entity, parentId uid.Id) error {
if entity == nil {
panic(fmt.Errorf("%w: %w: entity is nil", ErrEntityMgr, exception.ErrArgs))
}
parent, err := func() (ec.Entity, error) {
if parentId.IsNil() {
return nil, nil
}
parent, ok := mgr.GetEntity(parentId)
if !ok {
return nil, fmt.Errorf("%w: parent not exist", ErrEntityMgr)
}
if parent.GetState() > ec.EntityState_Living {
return nil, fmt.Errorf("%w: invalid parent state %q", ErrEntityMgr, parent.GetState())
}
if parent.GetId() == entity.GetId() {
return nil, fmt.Errorf("%w: parent and child cannot be the same", ErrEntityMgr)
}
return parent, nil
}()
if err != nil {
return err
}
switch entity.GetScope() {
case ec.Scope_Local, ec.Scope_Global:
default:
return fmt.Errorf("%w: %w: invalid scope", ErrEntityMgr, exception.ErrArgs)
}
if entity.GetState() != ec.EntityState_Birth {
return fmt.Errorf("%w: invalid entity state %q", ErrEntityMgr, entity.GetState())
}
if entity.GetId().IsNil() {
ec.UnsafeEntity(entity).SetId(uid.New())
}
ec.UnsafeEntity(entity).SetContext(iface.Iface2Cache[Context](mgr.ctx))
entity.RangeComponents(func(comp ec.Component) bool {
if comp.GetId().IsNil() {
ec.UnsafeComponent(comp).SetId(uid.New())
}
return true
})
if mgr.ContainsEntity(entity.GetId()) {
return fmt.Errorf("%w: entity already exists in entity-mgr", ErrEntityMgr)
}
if parent != nil {
if _, ok := mgr.treeNodes[entity.GetId()]; ok {
return fmt.Errorf("%w: entity already exists in entity-tree", ErrEntityTree)
}
}
if entity.GetScope() == ec.Scope_Global {
_, loaded, err := service.Current(mgr).GetEntityMgr().GetOrAddEntity(entity)
if err != nil {
return err
}
if loaded {
return fmt.Errorf("%w: %w", ErrEntityMgr, err)
}
}
entityInfo := _EntityInfo{
element: mgr.entityList.PushBack(iface.MakeFaceAny(entity)),
hooks: [3]event.Hook{
ec.BindEventComponentMgrAddComponents(entity, mgr),
ec.BindEventComponentMgrRemoveComponent(entity, mgr),
},
}
if ec.UnsafeEntity(entity).GetOptions().AwakeOnFirstAccess {
entityInfo.hooks[2] = ec.BindEventComponentMgrFirstAccessComponent(entity, mgr)
}
mgr.entityIdx[entity.GetId()] = entityInfo
ec.UnsafeEntity(entity).SetState(ec.EntityState_Enter)
if parent != nil {
mgr.addToParentNode(entity, parent)
}
_EmitEventEntityMgrAddEntityWithInterrupt(mgr, func(entityMgr EntityMgr, entity ec.Entity) bool {
return entity.GetState() > ec.EntityState_Living
}, mgr, entity)
if parent != nil {
mgr.attachParentNode(entity, parent)
}
return nil
}
func (mgr *_EntityMgrBehavior) removeEntity(id uid.Id) {
entityInfo, ok := mgr.entityIdx[id]
if !ok {
return
}
entity := iface.Cache2Iface[ec.Entity](entityInfo.element.Value.Cache)
if entity.GetState() > ec.EntityState_Living {
return
}
ec.UnsafeEntity(entity).SetState(ec.EntityState_Leave)
if entity.GetTreeNodeState() == ec.TreeNodeState_Attached {
ec.UnsafeEntity(entity).SetTreeNodeState(ec.TreeNodeState_Detaching)
}
mgr.ReversedRangeChildren(entity.GetId(), func(child ec.Entity) bool {
child.DestroySelf()
return true
})
mgr.detachParentNode(entity)
_EmitEventEntityMgrRemoveEntity(mgr, mgr, entity)
mgr.removeFromParentNode(entity)
delete(mgr.entityIdx, id)
entityInfo.element.Escape()
event.Clean(entityInfo.hooks[:])
if entity.GetScope() == ec.Scope_Global {
service.Current(mgr).GetEntityMgr().RemoveEntity(entity.GetId())
}
}