From: Alexis Laferrière <alexis.laf@xymus.net>
Date: Fri, 15 Jan 2016 04:59:27 +0000 (-0500)
Subject: lib/gamnit flat: extract `App::frame_core_draw`
X-Git-Tag: v0.8~14^2~5
X-Git-Url: http://nitlanguage.org

lib/gamnit flat: extract `App::frame_core_draw`

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
---

diff --git a/lib/gamnit/flat.nit b/lib/gamnit/flat.nit
index 4c0b103..24a72c8 100644
--- a/lib/gamnit/flat.nit
+++ b/lib/gamnit/flat.nit
@@ -179,24 +179,30 @@ redef class App
 		update dt
 
 		# Draw and flip screen
+		frame_core_draw display
+		display.flip
+
+		# Check errors
+		gl_error = glGetError
+		assert gl_error == gl_NO_ERROR else print gl_error
+	end
+
+	# Draw sprites in `sprites` and `ui_sprites`
+	protected fun frame_core_draw(display: GamnitDisplay)
+	do
 		# TODO optimize this draw to store constant values on the GPU
 
-		## World sprites
+		# World sprites
 		simple_2d_program.use
 		simple_2d_program.mvp.uniform world_camera.mvp_matrix
 		for sprite in sprites do sprite.draw
 
-		## Reset only the depth buffer
+		# Reset only the depth buffer
 		glClear gl_DEPTH_BUFFER_BIT
 
-		## UI sprites
+		# UI sprites
 		simple_2d_program.mvp.uniform ui_camera.mvp_matrix
 		for sprite in ui_sprites do sprite.draw
-		display.flip
-
-		# Check errors
-		gl_error = glGetError
-		assert gl_error == gl_NO_ERROR else print gl_error
 	end
 
 	# Main method to refine in clients to update game logic and `sprites`