lib/gamnit: intro gamnit depth

[nit.git] / lib / gamnit / depth / depth.nit

diff --git a/lib/gamnit/depth/depth.nit b/lib/gamnit/depth/depth.nit
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+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# Framework for 3D games in Nit
+module depth
+
+intrude import more_materials
+import more_models
+
+redef class App
+
+       redef fun on_create
+       do
+               super
+
+               # Move the camera back a bit
+               world_camera.reset_height(10.0)
+               world_camera.near = 0.1
+
+               # Prepare programs
+               var program = versatile_program
+               program.compile_and_link
+               var gamnit_error = program.error
+               assert gamnit_error == null else print_error gamnit_error
+
+               program = normals_program
+               normals_program.compile_and_link
+               gamnit_error = program.error
+               assert gamnit_error == null else print_error gamnit_error
+       end
+
+       # Draw all element in `actors`
+       redef fun frame_core_draw(display)
+       do
+               super
+
+               # Update cameras on both our programs
+               versatile_program.use
+               versatile_program.mvp.uniform world_camera.mvp_matrix
+
+               normals_program.use
+               normals_program.mvp.uniform app.world_camera.mvp_matrix
+
+               for actor in actors do
+                       for leaf in actor.model.leaves do
+                               leaf.material.draw(actor, leaf)
+                       end
+               end
+       end
+end