102 lines
2.5 KiB
C++
102 lines
2.5 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "../FastRandom.h"
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/// Handler used for both dirt and grass
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class cBlockDirtHandler :
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public cBlockHandler
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{
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public:
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cBlockDirtHandler(BLOCKTYPE a_BlockType)
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: cBlockHandler(a_BlockType)
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{
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}
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virtual void ConvertToPickups(cItems & a_Pickups, NIBBLETYPE a_BlockMeta) override
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{
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a_Pickups.push_back(cItem(E_BLOCK_DIRT, 1, 0));
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}
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virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_PluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ) override
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{
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if (m_BlockType != E_BLOCK_GRASS)
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{
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return;
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}
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// Grass becomes dirt if there is something on top of it:
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if (a_RelY < cChunkDef::Height - 1)
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{
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BLOCKTYPE Above;
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NIBBLETYPE AboveMeta;
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a_Chunk.GetBlockTypeMeta(a_RelX, a_RelY + 1, a_RelZ, Above, AboveMeta);
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if (!cBlockInfo::GetHandler(Above)->CanDirtGrowGrass(AboveMeta))
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{
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a_Chunk.FastSetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_DIRT, E_META_DIRT_NORMAL);
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return;
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}
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}
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// Grass spreads to adjacent dirt blocks:
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cFastRandom rand;
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for (int i = 0; i < 2; i++) // Pick two blocks to grow to
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{
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int OfsX = rand.NextInt(3, a_RelX) - 1; // [-1 .. 1]
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int OfsY = rand.NextInt(5, a_RelY) - 3; // [-3 .. 1]
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int OfsZ = rand.NextInt(3, a_RelZ) - 1; // [-1 .. 1]
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BLOCKTYPE DestBlock;
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NIBBLETYPE DestMeta;
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if ((a_RelY + OfsY < 0) || (a_RelY + OfsY >= cChunkDef::Height - 1))
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{
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// Y Coord out of range
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continue;
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}
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int BlockX = a_RelX + OfsX;
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int BlockY = a_RelY + OfsY;
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int BlockZ = a_RelZ + OfsZ;
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cChunk * Chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(BlockX, BlockZ);
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if (Chunk == NULL)
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{
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// Unloaded chunk
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continue;
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}
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Chunk->GetBlockTypeMeta(BlockX, BlockY, BlockZ, DestBlock, DestMeta);
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if ((DestBlock != E_BLOCK_DIRT) || (DestMeta != E_META_DIRT_NORMAL))
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{
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// Not a regular dirt block
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continue;
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}
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BLOCKTYPE AboveDest;
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NIBBLETYPE AboveMeta;
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Chunk->GetBlockTypeMeta(BlockX, BlockY + 1, BlockZ, AboveDest, AboveMeta);
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if (cBlockInfo::GetHandler(AboveDest)->CanDirtGrowGrass(AboveMeta))
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{
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if (!cRoot::Get()->GetPluginManager()->CallHookBlockSpread(Chunk->GetWorld(), Chunk->GetPosX() * cChunkDef::Width + BlockX, BlockY, Chunk->GetPosZ() * cChunkDef::Width + BlockZ, ssGrassSpread))
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{
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Chunk->FastSetBlock(BlockX, BlockY, BlockZ, E_BLOCK_GRASS, 0);
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}
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}
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} // for i - repeat twice
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}
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virtual const char * GetStepSound(void) override
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{
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return "step.gravel";
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}
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} ;
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