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amazingalekamazingalek
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Import model (#18)
* Asset mod helper for creating custom 3D objects * New sample mod which spawns rubber ducks
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24 files changed

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‎OWML.Assets/Mod3DObject.cs

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using UnityEngine;
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namespace OWML.Assets
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{
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public class Mod3DObject : MonoBehaviour
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{
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private void Start()
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{
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DontDestroyOnLoad(gameObject);
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}
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}
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}

‎OWML.Assets/ModAssets.cs

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using System.Collections;
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using OWML.Common;
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using UnityEngine;
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namespace OWML.Assets
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{
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public class ModAssets : IModAssets
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{
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private readonly IModConsole _console;
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private readonly ObjImporter _objImporter;
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public ModAssets(IModConsole console)
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{
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_console = console;
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_objImporter = new ObjImporter();
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}
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public GameObject Create3DObject(ModBehaviour modBehaviour, string objectFilename, string imageFilename)
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{
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var objectPath = modBehaviour.ModManifest.FolderPath + objectFilename;
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var imagePath = modBehaviour.ModManifest.FolderPath + imageFilename;
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_console.WriteLine("Creating object from " + objectPath);
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var go = new GameObject();
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go.AddComponent<Mod3DObject>();
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var loadObject = LoadObject(go, objectPath);
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modBehaviour.StartCoroutine(loadObject);
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var loadTexture = LoadTexture(go, imagePath);
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modBehaviour.StartCoroutine(loadTexture);
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return go;
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}
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private IEnumerator LoadObject(GameObject go, string objectPath)
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{
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var mesh = _objImporter.ImportFile(objectPath);
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var meshFilter = go.AddComponent<MeshFilter>();
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meshFilter.mesh = mesh;
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yield return null;
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}
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private IEnumerator LoadTexture(GameObject go, string imagePath)
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{
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var texture = new Texture2D(4, 4, TextureFormat.DXT1, false);
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var url = "file://" + imagePath;
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using (var www = new WWW(url))
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{
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yield return www;
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www.LoadImageIntoTexture(texture);
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}
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var meshRenderer = go.AddComponent<MeshRenderer>();
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meshRenderer.material.mainTexture = texture;
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}
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}
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}

‎OWML.Assets/OWML.Assets.csproj

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{A62856BD-D06C-4F2C-86E8-91C6FDF8F8D5}</ProjectGuid>
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<OutputType>Library</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>OWML.Assets</RootNamespace>
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<AssemblyName>OWML.Assets</AssemblyName>
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<TargetFrameworkVersion>v3.5</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<Deterministic>true</Deterministic>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Assembly-CSharp">
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<HintPath>..\..\..\..\..\..\Program Files (x86)\Outer Wilds\OuterWilds_Data\Managed\Assembly-CSharp.dll</HintPath>
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</Reference>
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<Reference Include="System.Core" />
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<Reference Include="UnityEngine.CoreModule, Version=0.0.0.0, Culture=neutral, processorArchitecture=MSIL">
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<SpecificVersion>False</SpecificVersion>
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<HintPath>..\..\..\..\..\..\Program Files (x86)\Outer Wilds\OuterWilds_Data\Managed\UnityEngine.CoreModule.dll</HintPath>
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</Reference>
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<Reference Include="UnityEngine.PhysicsModule, Version=0.0.0.0, Culture=neutral, processorArchitecture=MSIL">
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<SpecificVersion>False</SpecificVersion>
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<HintPath>..\..\..\..\..\..\Program Files (x86)\Outer Wilds\OuterWilds_Data\Managed\UnityEngine.PhysicsModule.dll</HintPath>
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</Reference>
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<Reference Include="UnityEngine.UnityWebRequestWWWModule">
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<HintPath>..\..\..\..\..\..\Program Files (x86)\Outer Wilds\OuterWilds_Data\Managed\UnityEngine.UnityWebRequestWWWModule.dll</HintPath>
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</Reference>
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Mod3DObject.cs" />
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<Compile Include="ModAssets.cs" />
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<Compile Include="ObjImporter.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<ProjectReference Include="..\OWML.Common\OWML.Common.csproj">
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<Project>{3C00626F-B688-4F32-B493-5B7EC1C879A0}</Project>
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<Name>OWML.Common</Name>
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</ProjectReference>
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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</Project>

‎OWML.Assets/ObjImporter.cs

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using UnityEngine;
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using System.Collections.Generic;
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using System.IO;
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namespace OWML.Assets
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{
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// Source: https://wiki.unity3d.com/index.php?title=ObjImporter&oldid=13033
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/* This version of ObjImporter first reads through the entire file, getting a count of how large
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* the final arrays will be, and then uses standard arrays for everything (as opposed to ArrayLists
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* or any other fancy things).
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*/
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public class ObjImporter
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{
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private struct meshStruct
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{
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public Vector3[] vertices;
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public Vector3[] normals;
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public Vector2[] uv;
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public Vector2[] uv1;
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public Vector2[] uv2;
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public int[] triangles;
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public int[] faceVerts;
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public int[] faceUVs;
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public Vector3[] faceData;
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public string name;
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public string fileName;
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}
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// Use this for initialization
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public Mesh ImportFile(string filePath)
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{
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meshStruct newMesh = createMeshStruct(filePath);
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populateMeshStruct(ref newMesh);
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Vector3[] newVerts = new Vector3[newMesh.faceData.Length];
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Vector2[] newUVs = new Vector2[newMesh.faceData.Length];
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Vector3[] newNormals = new Vector3[newMesh.faceData.Length];
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int i = 0;
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/* The following foreach loops through the facedata and assigns the appropriate vertex, uv, or normal
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* for the appropriate Unity mesh array.
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*/
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foreach (Vector3 v in newMesh.faceData)
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{
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newVerts[i] = newMesh.vertices[(int)v.x - 1];
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if (v.y >= 1)
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newUVs[i] = newMesh.uv[(int)v.y - 1];
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if (v.z >= 1)
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newNormals[i] = newMesh.normals[(int)v.z - 1];
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i++;
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}
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Mesh mesh = new Mesh();
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mesh.vertices = newVerts;
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mesh.uv = newUVs;
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mesh.normals = newNormals;
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mesh.triangles = newMesh.triangles;
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mesh.RecalculateBounds();
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//mesh.Optimize();
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return mesh;
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}
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private static meshStruct createMeshStruct(string filename)
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{
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int triangles = 0;
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int vertices = 0;
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int vt = 0;
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int vn = 0;
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int face = 0;
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meshStruct mesh = new meshStruct();
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mesh.fileName = filename;
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StreamReader stream = File.OpenText(filename);
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string entireText = stream.ReadToEnd();
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stream.Close();
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using (StringReader reader = new StringReader(entireText))
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{
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string currentText = reader.ReadLine();
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char[] splitIdentifier = { ' ' };
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string[] brokenString;
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while (currentText != null)
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{
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if (!currentText.StartsWith("f ") && !currentText.StartsWith("v ") && !currentText.StartsWith("vt ")
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&& !currentText.StartsWith("vn "))
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{
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currentText = reader.ReadLine();
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if (currentText != null)
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{
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currentText = currentText.Replace(" ", " ");
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}
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}
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else
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{
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currentText = currentText.Trim(); //Trim the current line
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brokenString = currentText.Split(splitIdentifier, 50); //Split the line into an array, separating the original line by blank spaces
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switch (brokenString[0])
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{
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case "v":
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vertices++;
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break;
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case "vt":
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vt++;
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break;
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case "vn":
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vn++;
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break;
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case "f":
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face = face + brokenString.Length - 1;
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triangles = triangles + 3 * (brokenString.Length - 2); /*brokenString.Length is 3 or greater since a face must have at least
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3 vertices. For each additional vertice, there is an additional
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triangle in the mesh (hence this formula).*/
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break;
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}
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currentText = reader.ReadLine();
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if (currentText != null)
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{
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currentText = currentText.Replace(" ", " ");
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}
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}
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}
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}
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mesh.triangles = new int[triangles];
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mesh.vertices = new Vector3[vertices];
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mesh.uv = new Vector2[vt];
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mesh.normals = new Vector3[vn];
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mesh.faceData = new Vector3[face];
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return mesh;
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}
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private static void populateMeshStruct(ref meshStruct mesh)
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{
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StreamReader stream = File.OpenText(mesh.fileName);
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string entireText = stream.ReadToEnd();
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stream.Close();
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using (StringReader reader = new StringReader(entireText))
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{
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string currentText = reader.ReadLine();
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char[] splitIdentifier = { ' ' };
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char[] splitIdentifier2 = { '/' };
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string[] brokenString;
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string[] brokenBrokenString;
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int f = 0;
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int f2 = 0;
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int v = 0;
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int vn = 0;
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int vt = 0;
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int vt1 = 0;
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int vt2 = 0;
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while (currentText != null)
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{
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if (!currentText.StartsWith("f ") && !currentText.StartsWith("v ") && !currentText.StartsWith("vt ") &&
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!currentText.StartsWith("vn ") && !currentText.StartsWith("g ") && !currentText.StartsWith("usemtl ") &&
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!currentText.StartsWith("mtllib ") && !currentText.StartsWith("vt1 ") && !currentText.StartsWith("vt2 ") &&
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!currentText.StartsWith("vc ") && !currentText.StartsWith("usemap "))
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{
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currentText = reader.ReadLine();
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if (currentText != null)
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{
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currentText = currentText.Replace(" ", " ");
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}
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}
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else
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{
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currentText = currentText.Trim();
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brokenString = currentText.Split(splitIdentifier, 50);
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switch (brokenString[0])
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{
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case "g":
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break;
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case "usemtl":
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break;
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case "usemap":
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break;
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case "mtllib":
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break;
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case "v":
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mesh.vertices[v] = new Vector3(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]),
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System.Convert.ToSingle(brokenString[3]));
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v++;
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break;
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case "vt":
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mesh.uv[vt] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
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vt++;
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break;
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case "vt1":
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mesh.uv[vt1] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
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vt1++;
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break;
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case "vt2":
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mesh.uv[vt2] = new Vector2(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]));
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vt2++;
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break;
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case "vn":
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mesh.normals[vn] = new Vector3(System.Convert.ToSingle(brokenString[1]), System.Convert.ToSingle(brokenString[2]),
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System.Convert.ToSingle(brokenString[3]));
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vn++;
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break;
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case "vc":
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break;
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case "f":
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int j = 1;
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List<int> intArray = new List<int>();
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while (j < brokenString.Length && ("" + brokenString[j]).Length > 0)
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{
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Vector3 temp = new Vector3();
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brokenBrokenString = brokenString[j].Split(splitIdentifier2, 3); //Separate the face into individual components (vert, uv, normal)
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temp.x = System.Convert.ToInt32(brokenBrokenString[0]);
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if (brokenBrokenString.Length > 1) //Some .obj files skip UV and normal
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{
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if (brokenBrokenString[1] != "") //Some .obj files skip the uv and not the normal
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{
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temp.y = System.Convert.ToInt32(brokenBrokenString[1]);
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}
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temp.z = System.Convert.ToInt32(brokenBrokenString[2]);
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}
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j++;
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mesh.faceData[f2] = temp;
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intArray.Add(f2);
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f2++;
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}
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j = 1;
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while (j + 2 < brokenString.Length) //Create triangles out of the face data. There will generally be more than 1 triangle per face.
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{
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mesh.triangles[f] = intArray[0];
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f++;
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mesh.triangles[f] = intArray[j];
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f++;
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mesh.triangles[f] = intArray[j + 1];
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f++;
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j++;
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}
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break;
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}
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currentText = reader.ReadLine();
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if (currentText != null)
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{
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currentText = currentText.Replace(" ", " "); //Some .obj files insert double spaces, this removes them.
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}
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}
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}
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}
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}
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}
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}

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