--- /dev/null
+# This file is part of NIT ( http://www.nitlanguage.org ).
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the Do What The Fuck You Want To
+# Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/projects/COPYING.WTFPL for more details.
+
+# Template for a 2D gamnit game
+module template_flat is
+ app_name "gamnit 2D Template"
+ app_namespace "net.xymus.template_flat"
+ app_version(1, 0, git_revision)
+
+ android_api_target 15
+end
+
+import gamnit::flat # For `Texture, Sprite`, etc.
+import gamnit::keys # For `pressed_keys`
+import app::audio # For `Sound`
+
+redef class App
+
+ # Texture, loaded automatically at `on_create`
+ var texture = new Texture("fighter.png")
+
+ # Sound effect, lazy loaded at first use
+ var sound = new Sound("laser.mp3")
+
+ # Sprite, must be loaded in or after `on_create`
+ var sprite = new Sprite(texture, new Point3d[Float](0.0, 0.0, 0.0)) is lazy
+
+ redef fun on_create
+ do
+ super
+
+ # Report errors on all loaded textures.
+ # Root textures are associated to pixel data,
+ # whereas other texture may be subtextures of root textures.
+ for tex in all_root_textures do
+ var error = tex.error
+ if error != null then print_error "Texture '{tex}' failed to load: {error}"
+ end
+
+ # Draw the texture as pixelated, it looks better for such
+ # a small texture.
+ texture.as(TextureAsset).pixelated = true
+
+ # Create the sprite and make it visible.
+ sprites.add sprite
+
+ # Make the sprite smaller, by default each pixel corresponds to 1 world unit.
+ # However, it is often preferable to make 1 world unit correspond to
+ # something meaningful in the game world, such as 1 meter.
+ #
+ # Scale the ship so it is approximately 5 world units wide.
+ sprite.scale = 5.0 / texture.width
+
+ # Move the camera to show 10 world units on the Y axis at Z = 0.
+ # The `sprite` should take approximately 1/4 of the height of the screen.
+ world_camera.reset_height 20.0
+
+ # Move the near clip wall closer to the camera because our world unit
+ # range is small. Moving the clip wall too close to the camera can
+ # cause glitches on mobiles devices with small depth buffer.
+ world_camera.near = 1.0
+
+ # Make the background blue and opaque.
+ glClearColor(0.0, 0.0, 1.0, 1.0)
+
+ # If the first command line argument is an integer, add extra sprites.
+ if args.not_empty and args.first.is_int then
+ # It's a performance test, unlock the framerate.
+ maximum_fps = -1.0
+
+ # Add `args.first` sprites.
+ for i in args.first.to_i.times do
+ var s = new Sprite(texture, new Point3d[Float](30.0.rand - 15.0, 20.0.rand - 10.0, 0.0 - 30.0.rand))
+ s.scale = 0.1
+ sprites.add s
+ end
+ end
+ end
+
+ redef fun update(dt)
+ do
+ # Update game logic here.
+ sprite.rotation += 0.1*pi*dt
+
+ # Move `sprite` with the keyboard arrows.
+ # Set the speed according to the elapsed time since the last frame `dt`
+ # for a smooth animation.
+ var unit_per_second = 2.0
+ for key in pressed_keys do
+ if key == "left" then
+ sprite.center.x -= unit_per_second*dt
+ else if key == "right" then
+ sprite.center.x += unit_per_second*dt
+ else if key == "up" then
+ sprite.center.y += unit_per_second*dt
+ else if key == "down" then
+ sprite.center.y -= unit_per_second*dt
+ end
+ end
+ end
+
+ redef fun accept_event(event)
+ do
+ if super then return true
+
+ if event isa QuitEvent or
+ (event isa KeyEvent and event.name == "escape" and event.is_up) then
+ # When window close button, escape or back key is pressed
+ # show the average FPS over the last few seconds.
+ print "{current_fps} fps"
+ print sys.perfs
+
+ # Quit abruptly
+ exit 0
+ else if event isa KeyEvent and event.is_down then
+ if event.name == "space" then
+ # Play a sound when space bar is pressed.
+ sound.play
+ return true
+ else if event.name == "s" then
+ # Remove a random sprite.
+ if sprites.not_empty then sprites.remove sprites.rand
+ else if event.name == "w" then
+ # Add a random sprite.
+ var s = new Sprite(texture, new Point3d[Float](30.0.rand - 15.0, 20.0.rand - 10.0, 0.0 - 30.0.rand))
+ s.scale = 0.1
+ s.tint[1] = 0.0
+ s.tint[2] = 0.0
+ sprites.add s
+ end
+ end
+
+ return false
+ end
+end
nitlanguage / nit.git / commitdiff
