Initial

2024-08-07 09:16:27 -04:00
parent fdfadd5c7e
commit 5f971cf684
5200 changed files with 731717 additions and 0 deletions
--- a/proto/source/TERRAIN.CPP
+++ b/proto/source/TERRAIN.CPP
@@ -0,0 +1,120 @@
+#include <proto/terrain.hpp>
+#include <proto/viewpt.hpp>
+#include <proto/fixed.hpp>
+#include <proto/display.hpp>
+#include <proto/mapterr.hpp>
+#include <common/guiwnd.hpp>
+#include <common/rect.hpp>
+#include <common/dib.hpp>
+
+MapTerrain::MapTerrain(SmartPointer<GUIWindow> &parentWindow,const String &strColorBitmap,const String &strHeightBitmap)
+: mSizeHandler(this,&MapTerrain::sizeHandler), mColorBitmap(strColorBitmap), mHeightBitmap(strHeightBitmap)
+{
+  mParentWindow=parentWindow;
+	mParentWindow->insertHandler(VectorHandler::SizeHandler,&mSizeHandler);
+	mHeightBitmap.upsideDown();
+	mColorBitmap.upsideDown();
+}
+
+MapTerrain::MapTerrain(const MapTerrain &mapTerrain)
+: mSizeHandler(this,&MapTerrain::sizeHandler)
+{ // private implementation
+  *this=mapTerrain;
+}
+
+MapTerrain &MapTerrain::operator=(const MapTerrain &/*mapTerrain*/)
+{  // private implementation
+  return *this;
+}
+
+MapTerrain::~MapTerrain()
+{
+}
+
+CallbackData::ReturnType MapTerrain::sizeHandler(CallbackData &someCallbackData)
+{
+  Rect winRect;
+
+  mParentWindow->windowRect(winRect);
+	mAngles.screenWidth(winRect.right());
+	mGeometry.screenWidth(winRect.right());
+	mTrigTable.build(mAngles);
+  return (CallbackData::ReturnType)FALSE;
+}
+
+void MapTerrain::mapTerrain(Display &display,ViewPoint &viewPoint)
+{
+	DIBitmap &bitmap=(DIBitmap&)display;
+	int bmWidth(bitmap.width());
+	int bmHeight(bitmap.height());
+	int rayCastAngle;
+	int currVoxelScale;
+	int mapAddress;
+	int colHeight;
+	int currRow;
+	int rayPointx;
+	int rayPointy;
+	int rayPointz;
+	int viewPointx;
+	int viewPointy;
+	int viewPointz;
+	UCHAR color;
+	UCHAR *pDestColPtr;
+	UCHAR *pDestBuffer;
+  int xr;
+	int yr;
+	int dx;
+	int dy;
+	int dz;
+
+  viewPointx=(int)viewPoint.viewPos().x()<<FixedPoint::FPShift;
+	viewPointy=(int)viewPoint.viewPos().y()<<FixedPoint::FPShift;
+	viewPointz=(int)viewPoint.viewPos().z()<<FixedPoint::FPShift;
+	pDestBuffer=(UCHAR*)bitmap.ptrData();
+	rayCastAngle=viewPoint.viewAngle().y()+mAngles.angleHalfFOV();
+	for(int currCol=0;currCol<bmWidth-1;currCol++)
+	{
+		rayPointx=viewPointx;
+		rayPointy=viewPointy;
+		rayPointz=viewPointz;
+		dx=mTrigTable.cos(rayCastAngle)<<1;
+		dy=mTrigTable.sin(rayCastAngle)<<1;
+		dz=mGeometry.deltaSlope()*(viewPoint.viewAngle().x()-bmWidth);
+		currVoxelScale=0;
+		currRow=0;
+		pDestColPtr=pDestBuffer;
+		for(int currStep=0;currStep<Geometry::MaxSteps;currStep++)
+		{
+		  xr=rayPointx>>FixedPoint::FPShift;
+			yr=rayPointy>>FixedPoint::FPShift;
+			xr=xr&(Geometry::HeightFieldWidth-1);
+			yr=yr&(Geometry::HeightFieldHeight-1);
+			mapAddress=(xr+(yr<<Geometry::HeightFieldBitShift));
+			colHeight=int(((char*)mHeightBitmap.ptrData())[mapAddress])<<(FixedPoint::FPShift+Geometry::TerrainScalex2);
+			if(colHeight>rayPointz)
+			{
+			  color=((char*)mColorBitmap.ptrData())[mapAddress];
+				while(TRUE)
+				{
+				  *pDestColPtr=color;
+					dz+=mGeometry.deltaSlope();
+					rayPointz+=currVoxelScale;
+					pDestColPtr+=bmWidth;
+					if(++currRow>=bmHeight)
+					{
+					  currStep=Geometry::MaxSteps;
+						break;
+					}
+					if(rayPointz>colHeight)break;
+				}
+			}
+			rayPointx+=dx;
+			rayPointy+=dy;
+			rayPointz+=dz;
+			currVoxelScale+=mGeometry.deltaSlope();
+		}
+    pDestBuffer++;
+		rayCastAngle--;
+	}
+	((DIBitmap&)display).bitBlt((PureDevice&)display);
+}