lib/gamnit/depth/depth.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   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
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   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.
  14
  15 # Framework for 3D games in Nit
  16 module depth
  17
  18 intrude import more_materials
  19 import more_models
  20 import particles
  21
  22 redef class App
  23
  24         redef fun on_create
  25         do
  26                 super
  27
  28                 # Move the camera back a bit
  29                 world_camera.reset_height(10.0)
  30                 world_camera.near = 0.1
  31
  32                 # Prepare programs
  33                 var programs = [versatile_program, normals_program, explosion_program, smoke_program, static_program: GamnitProgram]
  34                 for program in programs do
  35                         program.compile_and_link
  36                         var gamnit_error = program.error
  37                         assert gamnit_error == null else print_error gamnit_error
  38                 end
  39         end
  40
  41         redef fun frame_core_draw(display) do frame_core_depth display
  42
  43         # Draw all elements of `actors` and then call `frame_core_flat`
  44         protected fun frame_core_depth(display: GamnitDisplay)
  45         do
  46                 # Update cameras on both our programs
  47                 versatile_program.use
  48                 versatile_program.mvp.uniform world_camera.mvp_matrix
  49
  50                 normals_program.use
  51                 normals_program.mvp.uniform app.world_camera.mvp_matrix
  52
  53                 for actor in actors do
  54                         for leaf in actor.model.leaves do
  55                                 leaf.material.draw(actor, leaf)
  56                         end
  57                 end
  58
  59                 frame_core_world_sprites display
  60
  61                 # Toggle writing to the depth buffer for particles effects
  62                 glDepthMask false
  63                 for system in particle_systems do system.draw
  64                 glDepthMask true
  65
  66                 frame_core_ui_sprites display
  67         end
  68 end