forked from g3n/engine
/
keystate.go
172 lines (160 loc) · 5 KB
/
keystate.go
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package application
import (
"github.com/68696c6c/engine/window"
)
// KeyState keeps track of the state of all keys.
type KeyState struct {
win window.IWindow
states map[window.Key]bool
}
// NewKeyState returns a new KeyState object.
func NewKeyState(win window.IWindow) *KeyState {
ks := new(KeyState)
ks.win = win
ks.states = map[window.Key]bool{
window.KeyUnknown: false,
window.KeySpace: false,
window.KeyApostrophe: false,
window.KeyComma: false,
window.KeyMinus: false,
window.KeyPeriod: false,
window.KeySlash: false,
window.Key0: false,
window.Key1: false,
window.Key2: false,
window.Key3: false,
window.Key4: false,
window.Key5: false,
window.Key6: false,
window.Key7: false,
window.Key8: false,
window.Key9: false,
window.KeySemicolon: false,
window.KeyEqual: false,
window.KeyA: false,
window.KeyB: false,
window.KeyC: false,
window.KeyD: false,
window.KeyE: false,
window.KeyF: false,
window.KeyG: false,
window.KeyH: false,
window.KeyI: false,
window.KeyJ: false,
window.KeyK: false,
window.KeyL: false,
window.KeyM: false,
window.KeyN: false,
window.KeyO: false,
window.KeyP: false,
window.KeyQ: false,
window.KeyR: false,
window.KeyS: false,
window.KeyT: false,
window.KeyU: false,
window.KeyV: false,
window.KeyW: false,
window.KeyX: false,
window.KeyY: false,
window.KeyZ: false,
window.KeyLeftBracket: false,
window.KeyBackslash: false,
window.KeyRightBracket: false,
window.KeyGraveAccent: false,
window.KeyWorld1: false,
window.KeyWorld2: false,
window.KeyEscape: false,
window.KeyEnter: false,
window.KeyTab: false,
window.KeyBackspace: false,
window.KeyInsert: false,
window.KeyDelete: false,
window.KeyRight: false,
window.KeyLeft: false,
window.KeyDown: false,
window.KeyUp: false,
window.KeyPageUp: false,
window.KeyPageDown: false,
window.KeyHome: false,
window.KeyEnd: false,
window.KeyCapsLock: false,
window.KeyScrollLock: false,
window.KeyNumLock: false,
window.KeyPrintScreen: false,
window.KeyPause: false,
window.KeyF1: false,
window.KeyF2: false,
window.KeyF3: false,
window.KeyF4: false,
window.KeyF5: false,
window.KeyF6: false,
window.KeyF7: false,
window.KeyF8: false,
window.KeyF9: false,
window.KeyF10: false,
window.KeyF11: false,
window.KeyF12: false,
window.KeyF13: false,
window.KeyF14: false,
window.KeyF15: false,
window.KeyF16: false,
window.KeyF17: false,
window.KeyF18: false,
window.KeyF19: false,
window.KeyF20: false,
window.KeyF21: false,
window.KeyF22: false,
window.KeyF23: false,
window.KeyF24: false,
window.KeyF25: false,
window.KeyKP0: false,
window.KeyKP1: false,
window.KeyKP2: false,
window.KeyKP3: false,
window.KeyKP4: false,
window.KeyKP5: false,
window.KeyKP6: false,
window.KeyKP7: false,
window.KeyKP8: false,
window.KeyKP9: false,
window.KeyKPDecimal: false,
window.KeyKPDivide: false,
window.KeyKPMultiply: false,
window.KeyKPSubtract: false,
window.KeyKPAdd: false,
window.KeyKPEnter: false,
window.KeyKPEqual: false,
window.KeyLeftShift: false,
window.KeyLeftControl: false,
window.KeyLeftAlt: false,
window.KeyLeftSuper: false,
window.KeyRightShift: false,
window.KeyRightControl: false,
window.KeyRightAlt: false,
window.KeyRightSuper: false,
window.KeyMenu: false,
}
// Subscribe to window key events
ks.win.SubscribeID(window.OnKeyUp, &ks, ks.onKey)
ks.win.SubscribeID(window.OnKeyDown, &ks, ks.onKey)
return ks
}
// Dispose unsubscribes from the window events.
func (ks *KeyState) Dispose() {
ks.win.UnsubscribeID(window.OnKeyUp, &ks)
ks.win.UnsubscribeID(window.OnKeyDown, &ks)
}
// Pressed returns whether the specified key is currently pressed.
func (ks *KeyState) Pressed(k window.Key) bool {
return ks.states[k]
}
// onKey receives key events and updates the internal map of states.
func (ks *KeyState) onKey(evname string, ev interface{}) {
kev := ev.(*window.KeyEvent)
switch evname {
case window.OnKeyUp:
ks.states[kev.Keycode] = false
case window.OnKeyDown:
ks.states[kev.Keycode] = true
}
}