1 # This file is part of NIT ( http://www.nitlanguage.org ).
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 # Game and multimedia framework for Nit
24 import gamnit_android
is conditional
(android
)
25 import gamnit_linux
is conditional
(linux
)
29 # Main `GamnitDisplay` initialized by `on_create`
30 var display
: nullable GamnitDisplay = null
36 var display
= new GamnitDisplay
38 self.display
= display
41 # Core of the frame logic, executed only when the display is visible
43 # This method should be redefined by user modules to customize the behavior of the game.
44 protected fun frame_core
(display
: GamnitDisplay) do end
46 # Full frame logic, executed even if the display is not visible
48 # This method wraps `frame_core` and other services to be executed in the main app loop.
50 # To customize the behavior on each turn, it is preferable to redefined `frame_core`.
51 # Still, `frame_full` can be redefined with care for more control.
52 protected fun frame_full
55 if display
!= null then frame_core
(display
)
62 # TODO manage exit condition
66 # Loop on available events and feed them back to the app
68 # The implementation varies per platform.
69 private fun feed_events
do end
71 # Main method to receive `InputEvent` produced by the system
73 # Returns whether or not the event is used or intercepted.
74 # If `true`, the event will not be processed further by the system.
75 # Returns `false` to intercepts events like the back key on mobile devices.
77 # This method should be refined by client modules to react to user inputs.
78 fun accept_event
(event
: InputEvent): Bool do return false
84 if "NIT_TESTING".environ
== "true" then exit
0