Game Development Reference
In-Depth Information
public void reset() {
switch (type) {
case MOVE:
break;
case LOOK:
break;
default:
break;
}
}
private void doMove(int action, Point p) {
// Tell the native engine to move
}
private void doLook(int action, Point p) {
// Tell native engine to look
}
}
MultiTouchGesture
executes by checking its type (in this case
MOVE
or
LOOK
). Depending on
the type, a native method could be fired to send the XY coordinates to the game engine. The
action argument tells the gesture what kind of
MotionEvent
has fired. It can be one of the
following:
MotionEvent.ACTION_DOWN (first finger)
MotionEvent.ACTION_UP (first finger)
MotionEvent.ACTION_MOVE (first finger)
ACTION_POINTER_1_DOWN (second)
ACTION_POINTER_1_UP (second)
ACTION_POINTER_2_DOWN (third)
ACTION_POINTER_2_UP (third)
ACTION_POINTER_3_DOWN (fourth)
ACTION_POINTER_3_UP (fourth)
Tip
Android supports up to four simultaneous pointers/fingers on screen.
MultiTouchScreen
MultiTouchScreen
is in charge of storing a list of gestures, checking their bounds, and
interacting with the main activity (see Listing 2-9).
