132 lines
3.2 KiB
C
132 lines
3.2 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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#include "../Root.h"
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#include "../Bindings/PluginManager.h"
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class cBlockGrassHandler :
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public cBlockHandler
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{
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using super = cBlockHandler;
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public:
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cBlockGrassHandler(BLOCKTYPE a_BlockType):
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super(a_BlockType)
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{
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}
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virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
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{
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if (!ToolHasSilkTouch(a_Tool))
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{
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return cItem(E_BLOCK_DIRT, 1, 0);
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}
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return cItem(E_BLOCK_GRASS, 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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// Make sure that there is enough light at the source block to spread
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if (!a_Chunk.GetWorld()->IsChunkLighted(a_Chunk.GetPosX(), a_Chunk.GetPosZ()))
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{
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a_Chunk.GetWorld()->QueueLightChunk(a_Chunk.GetPosX(), a_Chunk.GetPosZ());
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return;
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}
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else if ((a_RelY < cChunkDef::Height - 1))
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{
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BLOCKTYPE above = a_Chunk.GetBlock(a_RelX, a_RelY + 1, a_RelZ);
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// Grass turns back to dirt when the block above it is not transparent or water.
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// It does not turn to dirt when a snow layer is above.
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if ((above != E_BLOCK_SNOW) &&
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(!cBlockInfo::IsTransparent(above) || IsBlockWater(above)))
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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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NIBBLETYPE light = std::max(a_Chunk.GetBlockLight(a_RelX, a_RelY + 1, a_RelZ), a_Chunk.GetTimeAlteredLight(a_Chunk.GetSkyLight(a_RelX, a_RelY + 1, a_RelZ)));
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// Source block is not bright enough to spread
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if (light < 9)
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{
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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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auto & rand = GetRandomProvider();
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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.RandInt(-1, 1);
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int OfsY = rand.RandInt(-3, 1);
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int OfsZ = rand.RandInt(-1, 1);
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BLOCKTYPE DestBlock;
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NIBBLETYPE DestMeta;
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if (!cChunkDef::IsValidHeight(a_RelY + OfsY))
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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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Vector3i pos(a_RelX + OfsX, a_RelY + OfsY, a_RelZ + OfsZ);
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auto chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(pos);
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if (chunk == nullptr)
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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(pos, 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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auto abovePos = pos.addedY(1);
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BLOCKTYPE above = chunk->GetBlock(abovePos);
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NIBBLETYPE light = std::max(chunk->GetBlockLight(abovePos), chunk->GetTimeAlteredLight(chunk->GetSkyLight(abovePos)));
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if ((light > 4) &&
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cBlockInfo::IsTransparent(above) &&
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(!IsBlockLava(above)) &&
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(!IsBlockWaterOrIce(above))
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)
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{
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auto absPos = chunk->RelativeToAbsolute(pos);
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if (!cRoot::Get()->GetPluginManager()->CallHookBlockSpread(*chunk->GetWorld(), absPos.x, absPos.y, absPos.z, ssGrassSpread))
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{
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chunk->FastSetBlock(pos, 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 ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
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{
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UNUSED(a_Meta);
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return 1;
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}
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} ;
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