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using System;
using System.Collections;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using UnityEngine;
public class CubeFamily : MonoBehaviour
{
public void Initialize(CubeAsset asset)
{
// Blast asset creation
_cubeAsset = asset;
NvBlastAssetDesc desc = _cubeAsset.solverAssetDesc;
_blastAsset = new NvBlastAsset(desc);
// Debug.Log(_blastAsset.leafChunkCount);
// Actual Cubes
var cubePrefab = Resources.Load<GameObject>("CubePrefab");
_cubes = new GameObject[desc.chunkCount];
for (int i = 0; i < desc.chunkCount; ++i)
{
GameObject cube = GameObject.Instantiate<GameObject>(cubePrefab);
cube.transform.parent = transform;
cube.transform.localScale = _cubeAsset.chunks[i].extents;
cube.transform.localPosition = _cubeAsset.chunks[i].position;
cube.transform.localRotation = Quaternion.identity;
cube.SetActive(false);
Color color = Color.HSVToRGB(UnityEngine.Random.Range(0f, 1f), 0.42f, 1.0f);
cube.GetComponent<Renderer>().material.color = color;
_cubes[i] = cube;
}
// First actor
_blastFamily = new NvBlastFamily(_blastAsset);
NvBlastActorDesc actorDesc = new NvBlastActorDesc();
actorDesc.uniformInitialBondHealth = 1.0f;
actorDesc.uniformInitialLowerSupportChunkHealth = 1.0f;
var actor = new NvBlastActor(_blastFamily, actorDesc);
// Debug.Log(actor.visibleChunkCount);
OnActorCreated(actor, Vector3.zero, Quaternion.identity);
// Reserved buffers
_fractureBuffers = new NvBlastFractureBuffers();
_fractureBuffers.chunkFractures = Marshal.AllocHGlobal((int)desc.chunkCount * Marshal.SizeOf(typeof(NvBlastChunkFractureData)));
_fractureBuffers.bondFractures = Marshal.AllocHGlobal((int)desc.bondCount * Marshal.SizeOf(typeof(NvBlastBondFractureData)));
_leafChunkCount = (uint)_blastAsset.leafChunkCount;
_newActorsBuffer = Marshal.AllocHGlobal((int)_leafChunkCount * Marshal.SizeOf(typeof(IntPtr)));
}
private void OnActorCreated(NvBlastActor actor, Vector3 localPosition, Quaternion localRotation)
{
var rigidBodyGO = new GameObject("RigidActor");
rigidBodyGO.transform.SetParent(this.transform, false);
var rigidbody = rigidBodyGO.AddComponent<Rigidbody>();
rigidbody.transform.localPosition = localPosition;
rigidbody.transform.localRotation = localRotation;
// chunks
var chunkIndices = actor.visibleChunkIndices;
foreach (var chunkIndex in chunkIndices)
{
var chunkCube = _cubes[chunkIndex];
chunkCube.transform.SetParent(rigidbody.transform, false);
chunkCube.SetActive(true);
}
// search for static chunks
var graphNodeIndices = actor.graphNodeIndices;
var chunkGraph = _blastAsset.chunkGraph;
foreach(var node in graphNodeIndices)
{
var chunkIndex = Marshal.ReadInt32(chunkGraph.chunkIndices, Marshal.SizeOf(typeof(UInt32)) * (int)node);
var chunkCube = _cubeAsset.chunks[chunkIndex];
if(chunkCube.isStatic)
{
rigidbody.isKinematic = true;
break;
}
}
actor.userData = rigidbody;
_actors.Add(rigidbody, actor);
}
private void OnActorDestroyed(NvBlastActor actor)
{
var chunkIndices = actor.visibleChunkIndices;
foreach (var chunkIndex in chunkIndices)
{
var chunkCube = _cubes[chunkIndex];
chunkCube.transform.SetParent(transform, false);
chunkCube.SetActive(false);
}
var rigidbody = (actor.userData as Rigidbody);
_actors.Remove(rigidbody);
Destroy(rigidbody.gameObject);
actor.userData = null;
}
public void ApplyRadialDamage(Vector3 position, float minRadius, float maxRadius, float compressive)
{
var hits = Physics.OverlapSphere(position, maxRadius);
foreach (var hit in hits)
{
var rb = hit.GetComponentInParent<Rigidbody>();
if (rb != null)
{
ApplyRadialDamage(rb, position, minRadius, maxRadius, compressive);
}
}
}
public bool ApplyRadialDamage(Rigidbody rb, Vector3 position, float minRadius, float maxRadius, float compressive)
{
if (_actors.ContainsKey(rb))
{
Vector3 localPosition = rb.transform.InverseTransformPoint(position);
ApplyRadialDamage(_actors[rb], localPosition, minRadius, maxRadius, compressive);
return true;
}
return false;
}
private void ApplyRadialDamage( NvBlastActor actor, Vector3 localPosition, float minRadius, float maxRadius, float compressive )
{
_fractureBuffers.chunkFractureCount = _cubeAsset.solverAssetDesc.chunkCount;
_fractureBuffers.bondFractureCount = _cubeAsset.solverAssetDesc.bondCount;
NvBlastExtRadialDamageDesc desc = new NvBlastExtRadialDamageDesc();
desc.minRadius = minRadius;
desc.maxRadius = maxRadius;
desc.damage = compressive;
desc.p0 = localPosition.x;
desc.p1 = localPosition.y;
desc.p2 = localPosition.z;
IntPtr dam = Marshal.AllocHGlobal( Marshal.SizeOf( typeof(NvBlastExtRadialDamageDesc) ) );
Marshal.StructureToPtr( desc, dam, false );
var damP = new NvBlastDamageProgram() {
graphShaderFunction = NvBlastExtShadersWrapper.NvBlastExtFalloffGraphShader,
subgraphShaderFunction = NvBlastExtShadersWrapper.NvBlastExtFalloffSubgraphShader
};
var programParams = new NvBlastExtProgramParams() {
damageDescBuffer = dam,
material = IntPtr.Zero,
accelerator = IntPtr.Zero
};
actor.GenerateFracture( _fractureBuffers, damP, programParams );
actor.ApplyFracture( _fractureBuffers );
if ( _fractureBuffers.bondFractureCount + _fractureBuffers.chunkFractureCount > 0 )
{
Split( actor );
}
Marshal.FreeHGlobal(dam);
}
private void Split( NvBlastActor actor )
{
NvBlastActorSplitEvent split = new NvBlastActorSplitEvent();
split.newActors = _newActorsBuffer;
var count = actor.Split(split, _leafChunkCount);
Vector3 localPosition = Vector3.zero;
Quaternion localRotation = Quaternion.identity;
if (split.deletedActor != IntPtr.Zero)
{
if (actor.userData != null)
{
var parentRigidbody = (actor.userData as Rigidbody);
localPosition = parentRigidbody.transform.localPosition;
localRotation = parentRigidbody.transform.localRotation;
}
OnActorDestroyed(actor);
}
for (int i = 0; i < count; i++)
{
int elementSize = Marshal.SizeOf(typeof(IntPtr));
var ptr = Marshal.ReadIntPtr(split.newActors, elementSize * i);
OnActorCreated(new NvBlastActor(_blastFamily, ptr), localPosition, localRotation);
}
}
private void OnDestroy()
{
if (_fractureBuffers != null)
{
Marshal.FreeHGlobal(_fractureBuffers.chunkFractures);
Marshal.FreeHGlobal(_fractureBuffers.bondFractures);
_fractureBuffers = null;
}
if (_newActorsBuffer != IntPtr.Zero)
{
Marshal.FreeHGlobal(_newActorsBuffer);
}
_actors.Clear();
_blastFamily = null;
_blastAsset = null;
}
private CubeAsset _cubeAsset;
private NvBlastAsset _blastAsset;
private NvBlastFamily _blastFamily;
private Dictionary<Rigidbody, NvBlastActor> _actors = new Dictionary<Rigidbody, NvBlastActor>();
private GameObject[] _cubes;
private NvBlastFractureBuffers _fractureBuffers;
private IntPtr _newActorsBuffer;
private uint _leafChunkCount;
}
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