Game Design Unity Infinite Terrain Generation Part 1 - Revision history

Shealladh at 23:59, 5 December 2015

2015-12-05T23:59:13Z

2015-11-29T05:10:05Z

2015-11-29T05:09:10Z

2015-11-29T04:58:38Z

2015-11-29T04:28:51Z

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2015-11-29T03:36:58Z

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← Older revision		Revision as of 23:59, 5 December 2015
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	Have fun!		Have fun!
		+
		+
		+	==Code Test==
		+	* Change all code to use wikimedia extension [https://www.mediawiki.org/wiki/Extension:SyntaxHighlight_GeSHi SyntaxHighlight_GeSHi]
		+	<pre>
		+	<syntaxhighlight lang="python">
		+	def quickSort(arr):
		+	less = []
		+	pivotList = []
		+	more = []
		+	if len(arr) <= 1:
		+	return arr
		+	else:
		+	pass
		+	</syntaxhighlight>
		+	</pre>

@@ Line 15: / Line 15: @@
 Because we want to make terrain that is virtually infinite (or at least veeeery large) we cannot use this technique directly – memory footprint required to store all the data would be huge and heightmap size would grow to thousands of pixels.
-Instead of making one large terrain we’ll divide it into smaller fragments called “chunks”. Each chunk will have its own mesh and several neighboring chunks will blend seamlessly into one larger terrain. You can treat them as a square tiles with 2D coordinates (X/Z). The key is to create several chunks of terrain around the player (up to the view distance) and add new ones as player moves. Old chunks that are too far from camera are then removed to free memory. See image below:
+Instead of making one large terrain we’ll divide it into smaller fragments called "chunks". Each chunk will have its own mesh and several neighboring chunks will blend seamlessly into one larger terrain. You can treat them as a square tiles with 2D coordinates (X/Z). The key is to create several chunks of terrain around the player (up to the view distance) and add new ones as player moves. Old chunks that are too far from camera are then removed to free memory. See image below:
 [[File:text3824-300x300.png|center|link= ]]

← Older revision		Revision as of 05:09, 29 November 2015
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	Infinite terrain generation in Unity 3D – Part 1.		Infinite terrain generation in Unity 3D – Part 1.
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−	~~[[File:pic.png\|900px\|center\|link= ]]~~
−	~~Code spacer: a~~
−
−	~~TextColor: '''<span style="color:#006699">csharp keyword</span>'''~~
−
−	~~<span style="color:#AFAFAF"># color</span>~~

@@ Line 67: / Line 67: @@
 I’ve created INoiseProvider interface that forces returning a value for given X/Z coordinates in Unity world space (that is an important information). NoiseProvider class gives us such a value from Perlin noise (I hope you’ve read two links above) – that’s just for a start.
-     <span style="color:#AFAFAF">1</span> '''<span style="color:#006699">public class</span>''' NoiseProvider : INoiseProvider
+     <span style="color:#AFAFAF">1</span>  '''<span style="color:#006699">public class</span>''' NoiseProvider : INoiseProvider
-     <span style="color:#AFAFAF">2</span> {
+     <span style="color:#AFAFAF">2</span>  {
      <span style="color:#AFAFAF">3</span>     '''<span style="color:#006699">private</span>''' Perlin PerlinNoiseGenerator;
      <span style="color:#AFAFAF">4</span>
@@ Line 80: / Line 80: @@
      <span style="color:#AFAFAF">12</span>        '''<span style="color:#006699">return</span>''' ('''<span style="color:#006699">float</span>''')(PerlinNoiseGenerator.GetValue(x, 0, z) / 2f) + 0.5f;
      <span style="color:#AFAFAF">13</span>    }
-     <span style="color:#AFAFAF">14</span>}
+     <span style="color:#AFAFAF">14</span> }
 OK – we’ve got our simple noise generator. Now some more technical stuff about Unity terrain.

@@ Line 67: / Line 67: @@
 I’ve created INoiseProvider interface that forces returning a value for given X/Z coordinates in Unity world space (that is an important information). NoiseProvider class gives us such a value from Perlin noise (I hope you’ve read two links above) – that’s just for a start.
-     <span style="color:#AFAFAF">1</span>'''<span style="color:#006699">public class</span>''' NoiseProvider : INoiseProvider
+     <span style="color:#AFAFAF">1</span> '''<span style="color:#006699">public class</span>''' NoiseProvider : INoiseProvider
-     <span style="color:#AFAFAF">2</span>{
+     <span style="color:#AFAFAF">2</span> {
      <span style="color:#AFAFAF">3</span>     '''<span style="color:#006699">private</span>''' Perlin PerlinNoiseGenerator;
      <span style="color:#AFAFAF">4</span>

@@ Line 93: / Line 93: @@
      '''<span style="color:#006699">public float</span>''' GetValue('''<span style="color:#006699">float</span>''' x, '''<span style="color:#006699">float</span>''' z)
+     {
-         return ('''<span style="color:#006699">float</span>''')(PerlinNoiseGenerator.GetValue(x, 0, z) / 2f) + 0.5f;
+         '''<span style="color:#006699">return</span>''' ('''<span style="color:#006699">float</span>''')(PerlinNoiseGenerator.GetValue(x, 0, z) / 2f) + 0.5f;
+     }
+}
@@ Line 168: / Line 168: @@
+     }
-     return heightmap;
+     '''<span style="color:#006699">return</span>''' heightmap;
+}
@@ Line 264: / Line 264: @@
+     }
-     return result;
+     '''<span style="color:#006699">return</span>''' result;
+}