74 lines
1.2 KiB
Go
74 lines
1.2 KiB
Go
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package simulator
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import "strconv"
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//GlobalItems table
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var GlobalItems map[itemType]item
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var nameToItem map[string]itemType
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type item interface {
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ID() itemType
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Type() ObjectType
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Render() string
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String() string
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Describe() string
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}
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//ItemEntry is a human/ui friendly item description
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type ItemEntry interface {
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String() string
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Render() string
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ID() itemType
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}
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type itemType int
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func (i itemType) String() string {
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return strconv.Itoa(int(i))
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}
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type empty struct {
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}
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func (e empty) ID() itemType {
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return itemType(0)
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}
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func (e empty) Type() ObjectType {
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return emptyObject
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}
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func (e empty) String() string {
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return ""
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}
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func (e empty) Render() string {
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return ""
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}
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func (e empty) Describe() string {
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return "an empty item"
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}
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func initItems() {
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GlobalItems = make(map[itemType]item)
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nameToItem = make(map[string]itemType)
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}
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func newItem(id itemType, obj item) {
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if _, ok := GlobalItems[id]; ok {
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panic("trying to add item that already exists")
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}
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if id == 0 || obj.String() == "" {
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panic("trying to add undeclared empty item")
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}
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GlobalItems[id] = obj
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nameToItem[obj.String()] = id
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}
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func lookupByName(name string) item {
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if res, ok := nameToItem[name]; ok {
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return GlobalItems[res]
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}
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return empty{}
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}
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