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OpenDiablo2/d2core/d2components/file_source.go
gravestench b86ac4df84 akara update: BaseComponent and BaseComponentMap
* common component methods have been put into BaseComponent and
BaseComponentMap
* boilerplate code for components has been significantly reduced
* all lint errors fixed in d2components
2020-12-07 12:44:11 -08:00

69 lines
2.1 KiB
Go

//nolint:dupl,golint,stylecheck // component declarations are supposed to look the same
package d2components
import (
"github.com/gravestench/akara"
"github.com/OpenDiablo2/OpenDiablo2/d2common/d2interface"
)
// AbstractSource is the abstract representation of what a file source is
type AbstractSource interface {
Path() string // the path of the source itself
Open(path *FilePathComponent) (d2interface.DataStream, error)
}
// static check that FileSourceComponent implements Component
var _ akara.Component = &FileSourceComponent{}
// static check that FileSourceMap implements ComponentMap
var _ akara.ComponentMap = &FileSourceMap{}
// FileSourceComponent contains an embedded file source interface, something that can open files
type FileSourceComponent struct {
*akara.BaseComponent
AbstractSource
}
// FileSourceMap is a map of entity ID's to FileSource
type FileSourceMap struct {
*akara.BaseComponentMap
}
// AddFileSource adds a new FileSourceComponent for the given entity id and returns it.
// this is a convenience method for the generic Add method, as it returns a
// *FileSourceComponent instead of an akara.Component
func (cm *FileSourceMap) AddFileSource(id akara.EID) *FileSourceComponent {
return cm.Add(id).(*FileSourceComponent)
}
// GetFileSource returns the FileSourceComponent associated with the given entity id
func (cm *FileSourceMap) GetFileSource(id akara.EID) (*FileSourceComponent, bool) {
entry, found := cm.Get(id)
if entry == nil {
return nil, false
}
return entry.(*FileSourceComponent), found
}
// FileSource is a convenient reference to be used as a component identifier
var FileSource = newFileSource() // nolint:gochecknoglobals // global by design
func newFileSource() akara.Component {
return &FileSourceComponent{
BaseComponent: akara.NewBaseComponent(FileSourceCID, newFileSource, newFileSourceMap),
}
}
func newFileSourceMap() akara.ComponentMap {
baseComponent := akara.NewBaseComponent(FileSourceCID, newFileSource, newFileSourceMap)
baseMap := akara.NewBaseComponentMap(baseComponent)
cm := &FileSourceMap{
BaseComponentMap: baseMap,
}
return cm
}