examples/mnit_dino/src/dino.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Copyright 2012-2013 Alexis Laferrière <alexis.laf@xymus.net>
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # App for the Dino game, manages App lifecyle and inputs
  18 module dino is
  19         app_version(0, 2, git_revision)
  20         app_name("mnit Dino")
  21 end
  22
  23 import mnit
  24
  25 import graphism
  26 import fancy_dino
  27 import splash
  28
  29 redef class App
  30         var cavemen_at_first_level = 6
  31         var cavemen_incr = 4
  32
  33         var game : nullable Game = null
  34         var score = new Ref[Int](0)
  35         var imgs : nullable ImageSet = null
  36         var splash : nullable SplashScreen = null
  37
  38         redef fun on_create
  39         do
  40                 super
  41
  42                 maximum_fps = 80.0
  43
  44                 var display = display
  45                 assert display != null
  46
  47                 # load only splash images
  48                 splash = new SplashScreen( self )
  49                 splash.draw( display, false )
  50
  51                 # load other images
  52                 imgs = new ImageSet( self )
  53
  54                 splash.draw( display, true )
  55         end
  56
  57         redef fun frame_core( display )
  58         do
  59                 var game = game
  60                 if game != null then
  61                         var turn = game.do_turn
  62                         game.draw( display, imgs.as(not null), turn )
  63                 else
  64                         splash.draw( display, true )
  65                 end
  66         end
  67
  68         redef fun input( input_event )
  69         do
  70                 if input_event isa QuitEvent then # close window button
  71                         quit = true # orders system to quit
  72                         return true # this event has been handled
  73
  74                 else if input_event isa PointerEvent then
  75                         if game == null then
  76                                 # start from splash
  77                                 game = new Game( cavemen_at_first_level, score )
  78                         else if game.over and game.ready_to_start_over then
  79                                 # play next game
  80                                 var next_nbr_caveman = game.nbr_wanted_cavemen
  81                                 if game.won then
  82                                         next_nbr_caveman += cavemen_incr
  83                                 else
  84                                         score = new Ref[Int](0)
  85                                         next_nbr_caveman = cavemen_at_first_level
  86                                 end
  87                                 game = new Game( next_nbr_caveman, score )
  88                         else
  89                                 # normal play
  90                                 game.dino.going_to = (new ScreenPos( input_event.x, input_event.y )).to_game( display.as(not null) )
  91                         end
  92                         return true
  93
  94                 else if input_event isa KeyEvent then
  95                         return false
  96                 end
  97
  98                 return false # unknown event, can be handled by something else
  99         end
 100 end