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Updated tutorial_viewports (markdown)

reduz 2014-04-18 13:07:45 -07:00
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tutorial_viewports.md

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The main uses in question are:
* The root of the active scene is always a Viewport. You should know this by having read previous tutorials.
* Sub-Viewports can be created when a Viewport is a child of a [Control](class_control).
* Viewports can be set to RenderTarget mode. This means that the viewport is not directly visible, but it's contents can be accessed via a [Texture](class_texture).
* **Scene Root**: The root of the active scene is always a Viewport. This is what displays the scenes created by the user. (You should know this by having read previous tutorials!)
* **Sub-Viewports**: These can be created when a Viewport is a child of a [Control](class_control).
* **Render Targets**: Viewports can be set to "RenderTarget" mode. This means that the viewport is not directly visible, but it's contents can be accessed via a [Texture](class_texture).
###Input
Viewports are also responsible of delivering properly adjusted and scaled input events to all it's children nodes. Both the root viewport and sub-viewports do this automatically, but render targets do not. Because of this, the user must do it manually via the [Viewport.input](class_viewport#input) function.
###Listener
Godot supports 3D sound (in both 2D and 3D nodes), more on this can be found in another tutorial (one day..). For this type of sound to be audible, the viewport needs to be enabled as a listener (for 2D or 3D).