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romkazvo
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Cry3DEngine/terrain_damage.cpp
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229
Cry3DEngine/terrain_damage.cpp
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////////////////////////////////////////////////////////////////////////////
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//
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// Crytek Engine Source File.
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// Copyright (C), Crytek Studios, 2002.
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// -------------------------------------------------------------------------
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// File name: terrain_damage.cpp
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// Version: v1.00
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// Created: 28/5/2001 by Vladimir Kajalin
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// Compilers: Visual Studio.NET
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// Description: terrain deformations
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// -------------------------------------------------------------------------
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// History:
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//
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////////////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "terrain_sector.h"
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#include "detail_grass.h"
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#include "objman.h"
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void CTerrain::ExplodeTerrain(Vec3d vExploPos, float fExploRadius, CObjManager * pObjManager, bool bDeformTerrain)
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{
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// calc area
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int x1=int(vExploPos.x-fExploRadius-CTerrain::GetHeightMapUnitSize());
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int y1=int(vExploPos.y-fExploRadius-CTerrain::GetHeightMapUnitSize());
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int x2=int(vExploPos.x+fExploRadius+CTerrain::GetHeightMapUnitSize());
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int y2=int(vExploPos.y+fExploRadius+CTerrain::GetHeightMapUnitSize());
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int nUnitSize = GetHeightMapUnitSize();
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x1=x1/nUnitSize*nUnitSize;
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x2=x2/nUnitSize*nUnitSize;
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y1=y1/nUnitSize*nUnitSize;
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y2=y2/nUnitSize*nUnitSize;
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// limits
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if(x1<0) x1=0;
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if(y1<0) y1=0;
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if(x2>=CTerrain::GetTerrainSize()) x2=CTerrain::GetTerrainSize()-1;
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if(y2>=CTerrain::GetTerrainSize()) y2=CTerrain::GetTerrainSize()-1;
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fExploRadius -= (float)fabs(vExploPos.z - GetZ(int((x1+x2)/2.f),int((y1+y2)/2.f)));
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if(fExploRadius<0.125f)
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return; // to hight
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// get near sectors
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list2<CSectorInfo*> lstNearSecInfos;
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for(int x=x1; x<=x2; x++)
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for(int y=y1; y<=y2; y++)
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{
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CSectorInfo * pInfo = GetSecInfo(x,y);
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if(pInfo && lstNearSecInfos.Find(pInfo)<0)
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lstNearSecInfos.Add(pInfo);
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}
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{
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CSectorInfo * pInfo = GetSecInfo(0,0);
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if(pInfo && lstNearSecInfos.Find(pInfo)<0)
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lstNearSecInfos.Add(pInfo);
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}
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// remove small objects around
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int s;
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for( s=0; s<lstNearSecInfos.Count(); s++)
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{
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CSectorInfo * pSecInfo = lstNearSecInfos[s];
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for(int i=0; i<pSecInfo->m_lstEntities[STATIC_ENTITIES].Count(); i++)
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{
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IEntityRender * pEntityRender = pSecInfo->m_lstEntities[STATIC_ENTITIES][i];
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Vec3d vEntBoxMin,vEntBoxMax;
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pEntityRender->GetBBox(vEntBoxMin,vEntBoxMax);
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float fEntRadius = vEntBoxMin.GetDistance(vEntBoxMax)*0.5f;
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Vec3d vEntCenter = (vEntBoxMin+vEntBoxMax)*0.5;
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float fDist = GetDistance(vExploPos,vEntCenter);
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if(fDist < fExploRadius+fEntRadius &&
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Overlap::Sphere_AABB(Sphere(vExploPos,fExploRadius), AABB(vEntBoxMin,vEntBoxMax)))
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{
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if(fDist>=fExploRadius)
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{ //
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Matrix44 objMat;
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CStatObj * pStatObj = (CStatObj *)pEntityRender->GetEntityStatObj(0,&objMat);
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if(!pStatObj)
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continue;
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objMat.Invert44();
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Vec3d vOSExploPos = objMat.TransformPointOLD(vExploPos);
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Vec3d vScaleTest(0,0,1.f);
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vScaleTest = objMat.TransformVectorOLD(vScaleTest);
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float fObjScaleInv = vScaleTest.len();
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if(!pStatObj->IsSphereOverlap(Sphere(vOSExploPos,fExploRadius*fObjScaleInv)))
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continue;
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}
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if(1)
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{
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if(pEntityRender->GetEntityRenderType() == eERType_Vegetation && fEntRadius < fExploRadius)
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{ // remove this object
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pSecInfo->m_lstEntities[STATIC_ENTITIES].Delete(i);
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delete pEntityRender;
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i--;
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}
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else
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{ // if something was imposible to destroy - disable deformation
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bDeformTerrain = false;
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}
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}
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}
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}
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}
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if(GetCVars()->e_decals == 2)
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UpdateLoadingScreen("CTerrain::ExplodeTerrain: %s", bDeformTerrain ? "Yes" : "No");
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// find min max of result
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float fResultZMin, fResultZMax;
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fResultZMin = fResultZMax = GetHMValue(x1,y1)*TERRAIN_Z_RATIO;
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// modify hightfield
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for(int x=x1; x<=x2; x+=CTerrain::GetHeightMapUnitSize())
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for(int y=y1; y<=y2; y+=CTerrain::GetHeightMapUnitSize())
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{
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ushort & sValue = GetHMValue(x,y);
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float fDamage = (fExploRadius - GetDistance(vExploPos,Vec3d((float)x,(float)y,GetZ(x,y))))/fExploRadius;
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if(fDamage<0)
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continue;
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if(sValue*TERRAIN_Z_RATIO > fResultZMax)
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fResultZMax = sValue*TERRAIN_Z_RATIO;
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// remember flags
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int flags = sValue & (INFO_BITS_MASK);
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if(bDeformTerrain && sValue > GetWaterLevel()*256+0.25f*256) // do not change hmap if there are trees here
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{
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sValue -= short(fDamage*2/TERRAIN_Z_RATIO);
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if(sValue < GetWaterLevel()*256+0.25f*256)
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sValue = short(GetWaterLevel()*256+0.25f*256);
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}
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if(fDamage>0.5f)
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flags |= EXPLO_BIT_MASK;
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// restore flags
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sValue = (sValue & ~(INFO_BITS_MASK)) | flags ;
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m_bHightMapModified = true;
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if(sValue*TERRAIN_Z_RATIO < fResultZMin)
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fResultZMin = sValue*TERRAIN_Z_RATIO;
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}
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// update terrain video buffers
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for(s=0; s<lstNearSecInfos.Count(); s++)
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{
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CSectorInfo * pSecInfo = lstNearSecInfos[s];
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if(pSecInfo)
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{
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pSecInfo->ReleaseHeightMapVertBuffer();
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pSecInfo->SetMinMaxMidZ();
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}
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}
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// update detail texture layers
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m_nDetailTexFocusX=m_nDetailTexFocusY=-CTerrain::GetTerrainSize();
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if(m_pDetailObjects)
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m_pDetailObjects->UpdateGrass();
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// delete decals what can not be correctly updated
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Get3DEngine()->DeleteDecalsInRange( Vec3d((float)x1,(float)y1,fResultZMin), Vec3d((float)x2,(float)y2,fResultZMax+1.f), false );
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}
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void CTerrain::GetObjectsAround(Vec3d vExploPos, float fExploRadius, list2<IEntityRender*> * pEntList)
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{
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assert(pEntList);
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// calc area
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int x1=int(vExploPos.x-fExploRadius-TERRAIN_SECTORS_MAX_OVERLAPPING);
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int y1=int(vExploPos.y-fExploRadius-TERRAIN_SECTORS_MAX_OVERLAPPING);
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int x2=int(vExploPos.x+fExploRadius+TERRAIN_SECTORS_MAX_OVERLAPPING);
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int y2=int(vExploPos.y+fExploRadius+TERRAIN_SECTORS_MAX_OVERLAPPING);
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int nUnitSize = GetHeightMapUnitSize();
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x1=x1/nUnitSize*nUnitSize;
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x2=x2/nUnitSize*nUnitSize;
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y1=y1/nUnitSize*nUnitSize;
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y2=y2/nUnitSize*nUnitSize;
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// limits
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if(x1<0) x1=0;
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if(y1<0) y1=0;
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if(x2>=CTerrain::GetTerrainSize()) x2=CTerrain::GetTerrainSize()-nUnitSize;
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if(y2>=CTerrain::GetTerrainSize()) y2=CTerrain::GetTerrainSize()-nUnitSize;
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// get near outdoor sectors
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list2<CSectorInfo*> lstNearSecInfos;
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for(int x=x1; x<=x2; x+=nUnitSize)
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for(int y=y1; y<=y2; y+=nUnitSize)
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{
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CSectorInfo * pInfo = GetSecInfo(x,y);
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if(pInfo && lstNearSecInfos.Find(pInfo)<0)
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lstNearSecInfos.Add(pInfo);
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}
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{ // add 0,0 outdoor sector
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CSectorInfo * pInfo = GetSecInfo(0,0);
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if(pInfo && lstNearSecInfos.Find(pInfo)<0)
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lstNearSecInfos.Add(pInfo);
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}
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// find static objects around
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for( int s=0; s<lstNearSecInfos.Count(); s++)
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{
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CSectorInfo * pSecInfo = lstNearSecInfos[s];
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for(int i=0; i<pSecInfo->m_lstEntities[STATIC_ENTITIES].Count(); i++)
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{
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IEntityRender * pEntityRender = pSecInfo->m_lstEntities[STATIC_ENTITIES][i];
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Vec3d vEntBoxMin, vEntBoxMax;
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pEntityRender->GetBBox(vEntBoxMin, vEntBoxMax);
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if(Overlap::Sphere_AABB(Sphere(vExploPos,fExploRadius), AABB(vEntBoxMin,vEntBoxMax)))
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if(pEntList->Find(pEntityRender)<0)
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pEntList->Add(pEntityRender);
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}
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}
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}
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