Added first youtube tutorials and placeholders

en/tutorials/csharpintermediate/animation-basics.md

@@ -3,7 +3,7 @@
 ## Explanation
 This C# Intermediate tutorial covers the basics of animation with Stride. All animations exist as animation clips assets in your project. From there on we can start, pause and stop animations by using Stride's animation component
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/uWgson2IIhs" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 [!code-csharp[NavigateCharacter](..\..\..\..\stride\samples\Tutorials\CSharpIntermediate\CSharpIntermediate\CSharpIntermediate.Game\07_Animation\AnimationBasics.cs)]

en/tutorials/csharpintermediate/async-scripts.md

@@ -5,7 +5,7 @@ This C# Intermediate tutorial covers the usage of asynchronous scripts or 'async
 
 With Async scripts we can perform heavy duty operations or reach out to an api without it freezing our application. A game can be made entirely with either Sync or Async scripts, or a combination of them both. 
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/GPiWbfsG5F0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 ### Async Collision trigger

en/tutorials/csharpintermediate/audio.md

@@ -3,7 +3,7 @@
 ## Explanation
 This C# Intermediate tutorial covers the basics of audio in your game. We learn about the various types of audio formats and settings. We cover how to user 3d spatialized audio and we also look at streaming audio.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/UvKizPFAego" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 ### Camera controller

en/tutorials/csharpintermediate/first-person-camera.md

@@ -3,7 +3,7 @@
 ## Explanation
 This C# Intermediate tutorial covers the implementation of first person camera. You learn about mouse movement and how to convert that in to a 3d rotation. We setup camera angle limitsand finally we apply movement to a first person character controller.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/19u2QACzdAk" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/.." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 
 ## Code

en/tutorials/csharpintermediate/navigation.md

@@ -4,7 +4,7 @@
 This C# Intermediate tutorial covers the basics of the navigation system in Stride. In our world we can have so called 'navigation meshes'. These are meshes that are generated around your level geometry. The navigation mesh is used to calculate the quickest path to a destination. 
 We learn about the editors Navigation mesh settings, navigation bounding boxes and in code we learn how move an object to a destination.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/UvKizPFAego" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 [!code-csharp[NavigateCharacter](..\..\..\..\stride\samples\Tutorials\CSharpIntermediate\CSharpIntermediate\CSharpIntermediate.Game\11_Navigation\NavigateCharacter.cs)]

en/tutorials/csharpintermediate/project-and-unproject.md

@@ -7,7 +7,7 @@ The 3D to 2D or projecting happens for instance when you have 3d quest marker. W
 
 From 2D to 3D is often used to convert a mouse coordinate in to the looking direction of the camera. This can used for firing a weapon or setting a target on a map when playing a strategy game.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/jBXGvLBwXqI" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/r2sMWGPidis" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 
 ## Code

en/tutorials/csharpintermediate/raycasting.md

@@ -3,7 +3,7 @@
 ## Explanation
 This C# Intermediate tutorial covers raycasting. Raycasting is an essential subject in 3d games. With raycasts we can detect if and what kinds of objects are in our line of sight. This can used for detecting enemies or how far an object really is. 
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/KGuBSRyRmVo" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/25ibO2YoEFE" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 ### Raycast

en/tutorials/csharpintermediate/scenes.md

@@ -3,7 +3,7 @@
 ## Explanation
 This C# Intermediate tutorial covers the implementation of a third person camera. Since it reuses a large portion of the ![First person camera](first-person-camera.md), it is recommended that your watch that tutorial first.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/2N6NhijZuJk" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 
 ## Code

en/tutorials/csharpintermediate/third-person-camera.md

@@ -4,7 +4,7 @@
 This C# Intermediate tutorial covers the implementation of a third person camera. Since it reuses a large portion of the ![First person camera](first-person-camera.md), it is recommended that your watch that tutorial first.
 This tutorial teaches about how to use raycasting to position the camera behind the player. If the player is to close any walls, the camera will be moved closer to the player. Too close to the player? We simply switch to first person mode.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/19u2QACzdAk" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe width="560" height="315" src="https://www.youtube.com/embed/..." frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
 
 ## Code
 ### Third person camera

en/tutorials/csharpintermediate/ui-basics.md

@@ -14,6 +14,9 @@ Those UI elements can be referenced in code, so that can set up events like "but
 The code below will look for a Page component that has been added to the current entity. On that page we search for UI elements like buttons and textfields. We than tell those UI elements what happends when we click on them, or that something needs to be done when a text value changes.
 [!code-csharp[editorpages](..\..\..\..\stride\samples\Tutorials\CSharpIntermediate\CSharpIntermediate\CSharpIntermediate.Game\01_UI-Basics\UIByEditor.cs)]
 
+
+<iframe width="560" height="315" src="https://www.youtube.com/embed/NnnbHn9LQUU" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+
 ### UI pages made entirely by code
 This script will create everything from scratch: a UI page, a stackpanel, a button, a textfield and the interactive logic behind it.
 [!code-csharp[uibycode](..\..\..\..\stride\samples\Tutorials\CSharpIntermediate\CSharpIntermediate\CSharpIntermediate.Game\01_UI-Basics\UIByCode)]