mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-12-27 04:08:53 +01:00
100 lines
2.4 KiB
Go
100 lines
2.4 KiB
Go
// Copyright 2022 The Ebiten Authors
|
|
//
|
|
// 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 ui
|
|
|
|
import (
|
|
"sync"
|
|
"sync/atomic"
|
|
)
|
|
|
|
var theGlobalState = globalState{
|
|
isScreenClearedEveryFrame_: 1,
|
|
graphicsLibrary_: int32(GraphicsLibraryUnknown),
|
|
}
|
|
|
|
// globalState represents a global state in this package.
|
|
// This is available even before the game loop starts.
|
|
type globalState struct {
|
|
err_ error
|
|
errM sync.Mutex
|
|
|
|
fpsMode_ int32
|
|
isScreenClearedEveryFrame_ int32
|
|
graphicsLibrary_ int32
|
|
}
|
|
|
|
func (g *globalState) error() error {
|
|
g.errM.Lock()
|
|
defer g.errM.Unlock()
|
|
return g.err_
|
|
}
|
|
|
|
func (g *globalState) setError(err error) {
|
|
g.errM.Lock()
|
|
defer g.errM.Unlock()
|
|
if g.err_ == nil {
|
|
g.err_ = err
|
|
}
|
|
}
|
|
|
|
func (g *globalState) fpsMode() FPSModeType {
|
|
return FPSModeType(atomic.LoadInt32(&g.fpsMode_))
|
|
}
|
|
|
|
func (g *globalState) setFPSMode(fpsMode FPSModeType) {
|
|
atomic.StoreInt32(&g.fpsMode_, int32(fpsMode))
|
|
}
|
|
|
|
func (g *globalState) isScreenClearedEveryFrame() bool {
|
|
return atomic.LoadInt32(&g.isScreenClearedEveryFrame_) != 0
|
|
}
|
|
|
|
func (g *globalState) setScreenClearedEveryFrame(cleared bool) {
|
|
v := int32(0)
|
|
if cleared {
|
|
v = 1
|
|
}
|
|
atomic.StoreInt32(&g.isScreenClearedEveryFrame_, v)
|
|
}
|
|
|
|
func (g *globalState) setGraphicsLibrary(library GraphicsLibrary) {
|
|
atomic.StoreInt32(&g.graphicsLibrary_, int32(library))
|
|
}
|
|
|
|
func (g *globalState) graphicsLibrary() GraphicsLibrary {
|
|
return GraphicsLibrary(atomic.LoadInt32(&g.graphicsLibrary_))
|
|
}
|
|
|
|
func FPSMode() FPSModeType {
|
|
return theGlobalState.fpsMode()
|
|
}
|
|
|
|
func SetFPSMode(fpsMode FPSModeType) {
|
|
theGlobalState.setFPSMode(fpsMode)
|
|
theUI.SetFPSMode(fpsMode)
|
|
}
|
|
|
|
func IsScreenClearedEveryFrame() bool {
|
|
return theGlobalState.isScreenClearedEveryFrame()
|
|
}
|
|
|
|
func SetScreenClearedEveryFrame(cleared bool) {
|
|
theGlobalState.setScreenClearedEveryFrame(cleared)
|
|
}
|
|
|
|
func GetGraphicsLibrary() GraphicsLibrary {
|
|
return theGlobalState.graphicsLibrary()
|
|
}
|