1 files changed, 261 insertions, 0 deletions

diff --git a/src/PalettedBlockArea.cpp b/src/PalettedBlockArea.cpp
new file mode 100644
index 000000000..e703adec0
--- /dev/null
+++ b/src/PalettedBlockArea.cpp
@@ -0,0 +1,261 @@
+#include "Globals.h"
+#include "PalettedBlockArea.h"
+
+
+
+
+
+PalettedBlockArea::PalettedBlockArea()
+{
+	// Nothing needed yet
+}
+
+
+
+
+
+PalettedBlockArea PalettedBlockArea::createFilled(Vector3i aSize, const AString & aBlockTypeName, const BlockState & aBlockState)
+{
+	ASSERT(aSize.x > 0);
+	ASSERT(aSize.y > 0);
+	ASSERT(aSize.z > 0);
+
+	PalettedBlockArea res;
+	auto numBlocks = static_cast<UInt64>(aSize.x) * static_cast<UInt64>(aSize.y) * static_cast<UInt64>(aSize.z);
+	if (numBlocks >= std::numeric_limits<UInt32>::max())
+	{
+		// We use 32-bit indices in some functions (for ARM speed), so we need the entire area to fit into UInt32
+		throw std::runtime_error("Size is too large");
+	}
+	res.mSize = aSize;
+	res.mBlocks.resize(static_cast<size_t>(numBlocks));
+	res.fill(aBlockTypeName, aBlockState);
+	return res;
+}
+
+
+
+
+
+cCuboid PalettedBlockArea::whole() const
+{
+	return cCuboid(Vector3i(), mSize);
+}
+
+
+
+
+
+void PalettedBlockArea::setBlock(Vector3i aPos, const AString & aBlockTypeName, const BlockState & aBlockState)
+{
+	setBlock(aPos, paletteIndex(aBlockTypeName, aBlockState));
+}
+
+
+
+
+
+void PalettedBlockArea::setBlock(Vector3i aPos, UInt32 aPaletteIndex)
+{
+	ASSERT(isPositionValid(aPos));
+	ASSERT(aPaletteIndex < mPalette.count());
+
+	auto idx = positionToIndex(aPos);
+	mBlocks[idx] = aPaletteIndex;
+}
+
+
+
+
+
+UInt32 PalettedBlockArea::paletteIndex(const AString & aBlockTypeName, const BlockState & aBlockState)
+{
+	return mPalette.index(aBlockTypeName, aBlockState);
+}
+
+
+
+
+
+std::pair<UInt32, bool> PalettedBlockArea::maybePaletteIndex(const AString & aBlockTypeName, const BlockState & aBlockState) const
+{
+	return mPalette.maybeIndex(aBlockTypeName, aBlockState);
+}
+
+
+
+
+
+UInt32 PalettedBlockArea::blockPaletteIndex(Vector3i aPos) const
+{
+	auto idx = positionToIndex(aPos);
+	return mBlocks[idx];
+}
+
+
+
+
+
+const std::pair<AString, BlockState> & PalettedBlockArea::block(Vector3i aPos) const
+{
+	return paletteEntry(blockPaletteIndex(aPos));
+}
+
+
+
+
+
+const std::pair<AString, BlockState> & PalettedBlockArea::paletteEntry(UInt32 aPaletteIndex) const
+{
+	return mPalette.entry(aPaletteIndex);
+}
+
+
+
+
+
+bool PalettedBlockArea::isPositionValid(Vector3i aPos) const
+{
+	return (
+		(aPos.x >= 0) && (aPos.y >= 0) && (aPos.z >= 0) &&              // Non-negative coords
+		(aPos.x < mSize.x) && (aPos.y < mSize.y) && (aPos.z < mSize.z)  // Fit into size
+	);
+}
+
+
+
+
+
+void PalettedBlockArea::fill(const AString & aBlockTypeName, const BlockState & aBlockState)
+{
+	BlockTypePalette btp;
+	auto idx = btp.index(aBlockTypeName, aBlockState);
+	std::swap(mPalette, btp);
+	std::fill(mBlocks.begin(), mBlocks.end(), idx);
+}
+
+
+
+
+
+void PalettedBlockArea::paste(const PalettedBlockArea & aSrc, const cCuboid & aSrcCuboid, Vector3i aDstOrigin)
+{
+	// Clamp the src cuboid, first by src itself, then by this PBA's coord range:
+	cCuboid srcCuboid(aSrcCuboid);
+	srcCuboid.Sort();
+	srcCuboid.Clamp(aSrc.whole());
+	Vector3i maxSize = mSize - aDstOrigin;
+	srcCuboid.ClampSize(maxSize);
+	Vector3i dstOrigin(aDstOrigin);
+
+	// If any aDstOrigin coord is lower than 0, adjust the coord and src cuboid size:
+	if (dstOrigin.x < 0)
+	{
+		srcCuboid.p1.x -= dstOrigin.x;
+		if (srcCuboid.p1.x >= srcCuboid.p2.x)
+		{
+			return;
+		}
+		dstOrigin.x = 0;
+	}
+	if (dstOrigin.y < 0)
+	{
+		srcCuboid.p1.y -= dstOrigin.y;
+		if (srcCuboid.p1.y >= srcCuboid.p2.y)
+		{
+			return;
+		}
+		dstOrigin.y = 0;
+	}
+	if (dstOrigin.z < 0)
+	{
+		srcCuboid.p1.z -= dstOrigin.z;
+		if (srcCuboid.p1.z >= srcCuboid.p2.z)
+		{
+			return;
+		}
+		dstOrigin.z = 0;
+	}
+
+	// Create a transform map from aSrc's palette to our palette:
+	auto paletteTransform = mPalette.createTransformMap(aSrc.mPalette);
+
+	// Copy the data:
+	UInt32 srcStrideY = static_cast<UInt32>(aSrc.size().x * aSrc.size().z);
+	UInt32 srcStrideZ = static_cast<UInt32>(aSrc.size().x);
+	UInt32 dstStrideY = static_cast<UInt32>(mSize.x * mSize.z);
+	UInt32 dstStrideZ = static_cast<UInt32>(mSize.x);
+	UInt32 minX = static_cast<UInt32>(srcCuboid.p1.x);
+	UInt32 maxX = static_cast<UInt32>(srcCuboid.p2.x);
+	UInt32 minY = static_cast<UInt32>(srcCuboid.p1.y);
+	UInt32 maxY = static_cast<UInt32>(srcCuboid.p2.y);
+	UInt32 minZ = static_cast<UInt32>(srcCuboid.p1.z);
+	UInt32 maxZ = static_cast<UInt32>(srcCuboid.p2.z);
+	UInt32 dstX = static_cast<UInt32>(dstOrigin.x);
+	UInt32 dstY = static_cast<UInt32>(dstOrigin.y);
+	UInt32 dstZ = static_cast<UInt32>(dstOrigin.z);
+	for (UInt32 y = minY; y < maxY; ++y)
+	{
+		UInt32 srcOfsY = y * srcStrideY;
+		UInt32 dstOfsY = (y - minY + dstY) * dstStrideY;
+		for (UInt32 z = minZ; z < maxZ; ++z)
+		{
+			UInt32 srcOfs = srcOfsY + z * srcStrideZ + minX;
+			UInt32 dstOfs = dstOfsY + (z - minZ + dstZ) * dstStrideZ + dstX;
+			for (UInt32 x = minX; x < maxX; ++x)
+			{
+				mBlocks[dstOfs] = paletteTransform[aSrc.mBlocks[srcOfs]];
+				srcOfs += 1;
+				dstOfs += 1;
+			}
+		}
+	}
+}
+
+
+
+
+
+void PalettedBlockArea::crop(const cCuboid & aArea)
+{
+	cCuboid area(aArea);
+	area.Clamp(whole());
+
+	// Copy the data:
+	UInt32 srcStrideY = static_cast<UInt32>(size().x * size().z);
+	UInt32 srcStrideZ = static_cast<UInt32>(size().x);
+	UInt32 dstStrideY = static_cast<UInt32>(area.DifX() * area.DifZ());
+	UInt32 dstStrideZ = static_cast<UInt32>(area.DifZ());
+	UInt32 minX = static_cast<UInt32>(area.p1.x);
+	UInt32 maxX = static_cast<UInt32>(area.p2.x);
+	UInt32 minY = static_cast<UInt32>(area.p1.y);
+	UInt32 maxY = static_cast<UInt32>(area.p2.y);
+	UInt32 minZ = static_cast<UInt32>(area.p1.z);
+	UInt32 maxZ = static_cast<UInt32>(area.p2.z);
+	for (UInt32 y = minY; y < maxY; ++y)
+	{
+		UInt32 srcOfsY = (y - minY) * srcStrideY;
+		UInt32 dstOfsY = y * dstStrideY;
+		for (UInt32 z = minZ; z < maxZ; ++z)
+		{
+			UInt32 srcOfs = srcOfsY + (z - minZ) * srcStrideZ + minX;
+			UInt32 dstOfs = dstOfsY + z * dstStrideZ;
+			for (UInt32 x = minX; x < maxX; ++x)
+			{
+				mBlocks[dstOfs] = mBlocks[srcOfs];
+				srcOfs += 1;
+				dstOfs += 1;
+			}
+		}
+	}
+}
+
+
+
+
+
+UInt32 PalettedBlockArea::positionToIndex(Vector3i aPos) const
+{
+	ASSERT(isPositionValid(aPos));
+	return static_cast<UInt32>(aPos.x + aPos.z * mSize.x + aPos.y * mSize.x * mSize.z);
+}