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add support for loading a texture atlas from a JSON file

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Gered 2013-08-25 14:28:11 -04:00
parent 46e0c96757
commit 2eaea03dba
4 changed files with 84 additions and 0 deletions
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3
Blarg.GameFramework/Blarg.GameFramework.csproj
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@ -189,6 +189,9 @@
<Compile Include="Graphics\Atlas\AutoGridTextureAtlas.cs" /> <Compile Include="Graphics\Atlas\AutoGridTextureAtlas.cs" />
<Compile Include="Graphics\Atlas\TextureAtlasAnimator.cs" /> <Compile Include="Graphics\Atlas\TextureAtlasAnimator.cs" />
<Compile Include="Graphics\Atlas\TextureAtlasTileAnimation.cs" /> <Compile Include="Graphics\Atlas\TextureAtlasTileAnimation.cs" />
<Compile Include="Graphics\Atlas\JsonTextureAtlasDefinition.cs" />
<Compile Include="Graphics\Atlas\JsonTextureAtlasTile.cs" />
<Compile Include="Graphics\Atlas\TextureAtlasLoader.cs" />
</ItemGroup> </ItemGroup>
<Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" /> <Import Project="$(MSBuildExtensionsPath32)\Microsoft\Portable\$(TargetFrameworkVersion)\Microsoft.Portable.CSharp.targets" />
<ItemGroup> <ItemGroup>

13
Blarg.GameFramework/Graphics/Atlas/JsonTextureAtlasDefinition.cs Normal file
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@ -0,0 +1,13 @@
using System;
using System.Collections.Generic;
namespace Blarg.GameFramework.Graphics.Atlas
{
public class JsonTextureAtlasDefinition
{
public string Texture;
public List<JsonTextureAtlasTile> Tiles;
}
}

19
Blarg.GameFramework/Graphics/Atlas/JsonTextureAtlasTile.cs Normal file
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@ -0,0 +1,19 @@
using System;
namespace Blarg.GameFramework.Graphics.Atlas
{
public class JsonTextureAtlasTile
{
public bool Autogrid;
public int X;
public int Y;
public int Width;
public int Height;
public int NumTilesX;
public int NumTilesY;
public int TileWidth;
public int TileHeight;
public int Border;
}
}

49
Blarg.GameFramework/Graphics/Atlas/TextureAtlasLoader.cs Normal file
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@ -0,0 +1,49 @@
using System;
using System.IO;
using Newtonsoft.Json;
using Blarg.GameFramework.Content;
using Blarg.GameFramework.IO;
namespace Blarg.GameFramework.Graphics.Atlas
{
public static class TextureAtlasLoader
{
public static TextureAtlas Load(Stream file, string texturePath = null)
{
if (file == null)
throw new ArgumentNullException("file");
var reader = new StreamReader(file);
var definition = JsonConvert.DeserializeObject<JsonTextureAtlasDefinition>(reader.ReadToEnd());
if (definition.Texture == null)
throw new Exception("No texture file specified.");
if (definition.Tiles == null || definition.Tiles.Count == 0)
throw new Exception("No tiles defined.");
var contentManager = Framework.Services.Get<ContentManager>();
if (contentManager == null)
throw new InvalidOperationException("Cannot find a ContentManager object.");
string textureFile = definition.Texture;
if (!String.IsNullOrEmpty(texturePath))
textureFile = texturePath + textureFile;
var texture = contentManager.Get<Texture>(textureFile);
var atlas = new CustomTextureAtlas(texture);
for (int i = 0; i < definition.Tiles.Count; ++i) {
var tile = definition.Tiles[i];
// TODO: parameter value error checking
if (tile.Autogrid)
atlas.AddGrid(tile.X, tile.Y, tile.TileWidth, tile.TileHeight, tile.NumTilesX, tile.NumTilesY, tile.Border);
else
atlas.Add(tile.X, tile.Y, tile.Width, tile.Height);
}
return atlas;
}
}
}