/*
RegisterKey allows entities to receive key presses by registering the functions
to execute when a key is either pressed or released.
*/
func (c *Controller) RegisterKey(key string, onPress, onRelease func()) error {
// check if key is valid
code := sdl.GetKeyFromName(key)
// FIXME determine how we can check for illegal values
log.Println("DEBUG: illegal code? :", code)
// make keyReceive struct
receive := &keyReceive{
lastState: false,
onPress: onPress,
onRelease: onRelease}
_, exists := c.keyreceivers[key]
if !exists {
// if new key --> create array with first chan
c.keyreceivers[key] = []*keyReceive{receive}
} else {
// if other entities already registered -> append chan
c.keyreceivers[key] = append(c.keyreceivers[key], receive)
}
return nil
}
func FromName(name string) Key {
code := sdl.GetKeyFromName(name)
return Key(code)
}