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inputTracker.go
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inputTracker.go
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package oak
import (
"sync/atomic"
"time"
"github.com/oakmound/oak/v4/dlog"
"github.com/oakmound/oak/v4/event"
"github.com/oakmound/oak/v4/joystick"
"github.com/oakmound/oak/v4/key"
"github.com/oakmound/oak/v4/mouse"
)
// InputType expresses some form of input to the engine to represent a player
type InputType int32
var trackingJoystickChange = event.RegisterEvent[struct{}]()
// The following constants define valid types of input sent via the InputChange event.
const (
InputNone InputType = iota
InputKeyboard
InputMouse
InputJoystick
)
func (w *Window) trackInputChanges() {
event.GlobalBind(w.eventHandler, key.AnyDown, func(key.Event) event.Response {
old := atomic.SwapInt32(&w.mostRecentInput, int32(InputKeyboard))
if InputType(old) != InputKeyboard {
event.TriggerOn(w.eventHandler, InputChange, InputKeyboard)
}
return 0
})
event.GlobalBind(w.eventHandler, mouse.Press, func(*mouse.Event) event.Response {
old := atomic.SwapInt32(&w.mostRecentInput, int32(InputMouse))
if InputType(old) != InputMouse {
event.TriggerOn(w.eventHandler, InputChange, InputMouse)
}
return 0
})
event.GlobalBind(w.eventHandler, trackingJoystickChange, func(struct{}) event.Response {
old := atomic.SwapInt32(&w.mostRecentInput, int32(InputMouse))
if InputType(old) != InputJoystick {
event.TriggerOn(w.eventHandler, InputChange, InputJoystick)
}
return 0
})
}
type joyHandler struct {
handler event.Handler
}
func (jh *joyHandler) Trigger(eventID event.UnsafeEventID, data interface{}) <-chan struct{} {
return event.TriggerOn(jh.handler, trackingJoystickChange, struct{}{})
}
func trackJoystickChanges(handler event.Handler) {
dlog.ErrorCheck(joystick.Init())
go func() {
jCh, _ := joystick.WaitForJoysticks(3 * time.Second)
for j := range jCh {
j.Handler = &joyHandler{
handler: handler,
}
j.Listen(nil)
}
}()
}