79 lines
1.4 KiB
Go
79 lines
1.4 KiB
Go
package d2gui
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import (
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"errors"
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"github.com/OpenDiablo2/OpenDiablo2/d2core/d2render"
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)
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var (
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ErrWasInit = errors.New("gui system is already initialized")
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ErrNotInit = errors.New("gui system is not initialized")
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)
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var singleton *manager
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func Initialize() error {
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verifyNotInit()
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var err error
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if singleton, err = createGuiManager(); err != nil {
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return err
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}
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return nil
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}
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func Render(target d2render.Surface) error {
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verifyWasInit()
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return singleton.render(target)
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}
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func Advance(elapsed float64) error {
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verifyWasInit()
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return singleton.advance(elapsed)
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}
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func CreateLayout(positionType PositionType) *Layout {
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verifyWasInit()
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return createLayout(positionType)
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}
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func SetLayout(layout *Layout) {
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verifyWasInit()
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singleton.SetLayout(layout)
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}
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// ShowLoadScreen renders the loading progress screen. The provided progress argument defines the loading animation's state in the range `[0, 1]`, where `0` is initial frame and `1` is the final frame
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func ShowLoadScreen(progress float64) {
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verifyWasInit()
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singleton.showLoadScreen(progress)
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}
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func HideLoadScreen() {
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verifyWasInit()
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singleton.hideLoadScreen()
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}
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func ShowCursor() {
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verifyWasInit()
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singleton.showCursor()
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}
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func HideCursor() {
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verifyWasInit()
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singleton.hideCursor()
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}
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func verifyWasInit() {
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if singleton == nil {
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panic(ErrNotInit)
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}
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}
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func verifyNotInit() {
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if singleton != nil {
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panic(ErrWasInit)
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}
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}
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