Concrete mixing (#4096)

Adds a block handler for concrete powder and implements hardening to concrete.
Concrete powder turns into concrete when:
* It is next to water when it receives a block update
* It falls onto a water block (even with Physics SandInstantFall=1)

CONTRIBUTORS

@@ -15,6 +15,7 @@ Bond_009
 derouinw
 Diusrex
 Duralex
+Earboxer (Zach DeCook)
 FakeTruth (founder)
 Gareth Nelson
 HaoTNN

src/Blocks/BlockConcretePowder.h

@@ -0,0 +1,106 @@
+
+#pragma once
+
+#include "BlockHandler.h"
+
+
+
+
+
+class cBlockConcretePowderHandler :
+	public cBlockHandler
+{
+public:
+	cBlockConcretePowderHandler(BLOCKTYPE a_BlockType):
+		cBlockHandler(a_BlockType)
+	{
+	}
+
+
+
+
+
+	virtual void Check(cChunkInterface & a_ChunkInterface, cBlockPluginInterface & a_PluginInterface, int a_RelX, int a_RelY, int a_RelZ, cChunk & a_Chunk) override
+	{
+		if (GetSoaked(Vector3i(a_RelX, a_RelY, a_RelZ), a_Chunk))
+		{
+			return;
+		}
+		cBlockHandler::Check(a_ChunkInterface, a_PluginInterface, a_RelX, a_RelY, a_RelZ, a_Chunk);
+	}
+
+
+
+
+
+	/** Check blocks above and around to see if they are water. If one is, convert this into concrete block.
+		Returns TRUE if the block was changed. */
+	bool GetSoaked(Vector3i a_Rel, cChunk & a_Chunk)
+	{
+		static const std::array<Vector3i, 5> WaterCheck
+		{
+			{
+				{ 1, 0,  0},
+				{-1, 0,  0},
+				{ 0, 0,  1},
+				{ 0, 0, -1},
+				{ 0, 1,  0},
+			}
+		};
+
+		bool ShouldSoak = std::any_of(WaterCheck.cbegin(), WaterCheck.cend(), [a_Rel, & a_Chunk](Vector3i a_Offset)
+			{
+				BLOCKTYPE NeighborType;
+				return (
+					a_Chunk.UnboundedRelGetBlockType(a_Rel.x + a_Offset.x, a_Rel.y + a_Offset.y, a_Rel.z + a_Offset.z, NeighborType)
+					&& IsBlockWater(NeighborType)
+				);
+			}
+		);
+
+		if (ShouldSoak)
+		{
+			NIBBLETYPE BlockMeta;
+			BlockMeta = a_Chunk.GetMeta(a_Rel.x, a_Rel.y, a_Rel.z);
+			a_Chunk.SetBlock(a_Rel.x, a_Rel.y, a_Rel.z, E_BLOCK_CONCRETE, BlockMeta);
+			return true;
+		}
+		return false;
+	}
+
+
+
+
+
+	virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
+	{
+		switch (a_Meta)
+		{
+			case E_META_CONCRETE_POWDER_WHITE: return 8;
+			case E_META_CONCRETE_POWDER_ORANGE: return 15;
+			case E_META_CONCRETE_POWDER_MAGENTA: return 16;
+			case E_META_CONCRETE_POWDER_LIGHTBLUE: return 17;
+			case E_META_CONCRETE_POWDER_YELLOW: return 18;
+			case E_META_CONCRETE_POWDER_LIGHTGREEN: return 19;
+			case E_META_CONCRETE_POWDER_PINK: return 20;
+			case E_META_CONCRETE_POWDER_GRAY: return 21;
+			case E_META_CONCRETE_POWDER_LIGHTGRAY: return 22;
+			case E_META_CONCRETE_POWDER_CYAN: return 23;
+			case E_META_CONCRETE_POWDER_PURPLE: return 24;
+			case E_META_CONCRETE_POWDER_BLUE: return 25;
+			case E_META_CONCRETE_POWDER_BROWN: return 26;
+			case E_META_CONCRETE_POWDER_GREEN: return 27;
+			case E_META_CONCRETE_POWDER_RED: return 28;
+			case E_META_CONCRETE_POWDER_BLACK: return 29;
+			default:
+			{
+				ASSERT(!"Unhandled meta in concrete powder handler!");
+				return 0;
+			}
+		}
+	}
+};
+
+
+
+

src/Blocks/BlockHandler.cpp

@@ -20,6 +20,7 @@
 #include "BlockCocoaPod.h"
 #include "BlockCommandBlock.h"
 #include "BlockComparator.h"
+#include "BlockConcretePowder.h"
 #include "BlockCrops.h"
 #include "BlockDeadBush.h"
 #include "BlockDirt.h"
@@ -210,6 +211,7 @@ cBlockHandler * cBlockHandler::CreateBlockHandler(BLOCKTYPE a_BlockType)
 		case E_BLOCK_COCOA_POD:                     return new cBlockCocoaPodHandler        (a_BlockType);
 		case E_BLOCK_COMMAND_BLOCK:                 return new cBlockCommandBlockHandler    (a_BlockType);
 		case E_BLOCK_ACTIVE_COMPARATOR:             return new cBlockComparatorHandler      (a_BlockType);
+		case E_BLOCK_CONCRETE_POWDER:               return new cBlockConcretePowderHandler  (a_BlockType);
 		case E_BLOCK_COBBLESTONE:                   return new cBlockStoneHandler           (a_BlockType);
 		case E_BLOCK_COBBLESTONE_STAIRS:            return new cBlockStairsHandler          (a_BlockType);
 		case E_BLOCK_COBWEB:                        return new cBlockCobWebHandler          (a_BlockType);

src/Blocks/CMakeLists.txt

@@ -26,6 +26,7 @@ SET (HDRS
 	BlockCocoaPod.h
 	BlockCommandBlock.h
 	BlockComparator.h
+	BlockConcretePowder.h
 	BlockCrops.h
 	BlockDeadBush.h
 	BlockDirt.h

src/Entities/FallingBlock.cpp

@@ -86,6 +86,13 @@ void cFallingBlock::Tick(std::chrono::milliseconds a_Dt, cChunk & a_Chunk)
 		Destroy(true);
 		return;
 	}
+	else if ((m_BlockType == E_BLOCK_CONCRETE_POWDER) && IsBlockWater(BlockBelow))
+	{
+		// Concrete powder falling into water solidifies on the first water it touches
+		cSandSimulator::FinishFalling(m_World, BlockX, BlockY, BlockZ, E_BLOCK_CONCRETE, m_BlockMeta);
+		Destroy(true);
+		return;
+	}
 
 	float MilliDt = a_Dt.count() * 0.001f;
 	AddSpeedY(MilliDt * -9.8f);

src/Simulator/SandSimulator.cpp

@@ -319,6 +319,11 @@ void cSandSimulator::DoInstantFall(cChunk * a_Chunk, int a_RelX, int a_RelY, int
 		{
 			BlockY = y + 1;
 		}
+		else if ((FallingBlockType == E_BLOCK_CONCRETE_POWDER) && IsBlockWater(BlockType))
+		{
+			FallingBlockType = E_BLOCK_CONCRETE;
+			BlockY = y;
+		}
 		else
 		{
 			// Can fall further down