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mirror of https://github.com/OpenDiablo2/OpenDiablo2 synced 2024-10-31 00:07:17 -04:00
OpenDiablo2/d2core/d2input/d2input.go
Maxime Lavigne (malavv) 973e969002
Working on d2input.go for #487 (#514)
d2input/ is now clear of lint.
2020-07-01 14:03:40 -04:00

115 lines
3.1 KiB
Go

package d2input
import (
"errors"
)
var (
// ErrHasReg shows the input system already has a registered handler
ErrHasReg = errors.New("input system already has provided handler")
// ErrNotReg shows the input system has no registered handler
ErrNotReg = errors.New("input system does not have provided handler")
)
var singleton inputManager
// HandlerEvent holds the qualifiers for a key or mouse event
type HandlerEvent struct {
KeyMod KeyMod
ButtonMod MouseButtonMod
X int
Y int
}
// KeyEvent represents an event associated with a keyboard key
type KeyEvent struct {
HandlerEvent
Key Key
// Duration represents the number of frames this key has been pressed for
Duration int
}
// KeyCharsEvent represents an event associated with a keyboard character being pressed
type KeyCharsEvent struct {
HandlerEvent
Chars []rune
}
// KeyDownHandler represents a handler for a keyboard key pressed event
type KeyDownHandler interface {
OnKeyDown(event KeyEvent) bool
}
// KeyRepeatHandler represents a handler for a keyboard key held-down event; between a pressed and released.
type KeyRepeatHandler interface {
OnKeyRepeat(event KeyEvent) bool
}
// KeyUpHandler represents a handler for a keyboard key release event
type KeyUpHandler interface {
OnKeyUp(event KeyEvent) bool
}
// KeyCharsHandler represents a handler associated with a keyboard character pressed event
type KeyCharsHandler interface {
OnKeyChars(event KeyCharsEvent) bool
}
// MouseEvent represents a mouse event
type MouseEvent struct {
HandlerEvent
Button MouseButton
}
// MouseEvent represents a mouse movement event
type MouseMoveEvent struct {
HandlerEvent
}
// MouseButtonDownHandler represents a handler for a mouse button pressed event
type MouseButtonDownHandler interface {
OnMouseButtonDown(event MouseEvent) bool
}
// MouseButtonRepeatHandler represents a handler for a mouse button held-down event; between a pressed and released.
type MouseButtonRepeatHandler interface {
OnMouseButtonRepeat(event MouseEvent) bool
}
// MouseButtonUpHandler represents a handler for a mouse button release event
type MouseButtonUpHandler interface {
OnMouseButtonUp(event MouseEvent) bool
}
// MouseMoveHandler represents a handler for a mouse button release event
type MouseMoveHandler interface {
OnMouseMove(event MouseMoveEvent) bool
}
// Initialize creates a single global input manager based on a specific input service
func Initialize(inputService InputService) {
singleton = inputManager{
inputService: inputService,
}
}
// Advance moves the input manager with the elapsed number of seconds.
func Advance(elapsed float64) error {
return singleton.advance(elapsed)
}
// BindHandlerWithPriority adds an event handler with a specific call priority
func BindHandlerWithPriority(handler Handler, priority Priority) error {
return singleton.bindHandler(handler, priority)
}
// BindHandler adds an event handler
func BindHandler(handler Handler) error {
return BindHandlerWithPriority(handler, PriorityDefault)
}
// UnbindHandler removes a previously bound event handler
func UnbindHandler(handler Handler) error {
return singleton.unbindHandler(handler)
}