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#pragma once
#include "BlockHandler.h"
#include "../FastRandom.h"
#include "../Root.h"
#include "../Bindings/PluginManager.h"
class cBlockGrassHandler :
public cBlockHandler
{
using super = cBlockHandler;
public:
cBlockGrassHandler(BLOCKTYPE a_BlockType):
super(a_BlockType)
{
}
virtual cItems ConvertToPickups(NIBBLETYPE a_BlockMeta, cBlockEntity * a_BlockEntity, const cEntity * a_Digger, const cItem * a_Tool) override
{
if (!ToolHasSilkTouch(a_Tool))
{
return cItem(E_BLOCK_DIRT, 1, 0);
}
return cItem(E_BLOCK_GRASS, 1, 0);
}
virtual void OnUpdate(cChunkInterface & cChunkInterface, cWorldInterface & a_WorldInterface, cBlockPluginInterface & a_PluginInterface, cChunk & a_Chunk, int a_RelX, int a_RelY, int a_RelZ) override
{
// Make sure that there is enough light at the source block to spread
if (!a_Chunk.GetWorld()->IsChunkLighted(a_Chunk.GetPosX(), a_Chunk.GetPosZ()))
{
a_Chunk.GetWorld()->QueueLightChunk(a_Chunk.GetPosX(), a_Chunk.GetPosZ());
return;
}
else if ((a_RelY < cChunkDef::Height - 1))
{
BLOCKTYPE above = a_Chunk.GetBlock(a_RelX, a_RelY + 1, a_RelZ);
// Grass turns back to dirt when the block above it is not transparent or water.
// It does not turn to dirt when a snow layer is above.
if ((above != E_BLOCK_SNOW) &&
(!cBlockInfo::IsTransparent(above) || IsBlockWater(above)))
{
a_Chunk.FastSetBlock(a_RelX, a_RelY, a_RelZ, E_BLOCK_DIRT, E_META_DIRT_NORMAL);
return;
}
// Source block is not bright enough to spread
if (a_Chunk.GetLightAltered(Vector3i(a_RelX, a_RelY + 1, a_RelZ)) < 9)
{
return;
}
}
// Grass spreads to adjacent dirt blocks:
auto & rand = GetRandomProvider();
for (int i = 0; i < 2; i++) // Pick two blocks to grow to
{
int OfsX = rand.RandInt(-1, 1);
int OfsY = rand.RandInt(-3, 1);
int OfsZ = rand.RandInt(-1, 1);
BLOCKTYPE DestBlock;
NIBBLETYPE DestMeta;
if (!cChunkDef::IsValidHeight(a_RelY + OfsY))
{
// Y Coord out of range
continue;
}
Vector3i pos(a_RelX + OfsX, a_RelY + OfsY, a_RelZ + OfsZ);
auto chunk = a_Chunk.GetRelNeighborChunkAdjustCoords(pos);
if (chunk == nullptr)
{
// Unloaded chunk
continue;
}
chunk->GetBlockTypeMeta(pos, DestBlock, DestMeta);
if ((DestBlock != E_BLOCK_DIRT) || (DestMeta != E_META_DIRT_NORMAL))
{
// Not a regular dirt block
continue;
}
auto abovePos = pos.addedY(1);
BLOCKTYPE above = chunk->GetBlock(abovePos);
if ((a_Chunk.GetLightAltered(abovePos) > 4) &&
cBlockInfo::IsTransparent(above) &&
(!IsBlockLava(above)) &&
(!IsBlockWaterOrIce(above))
)
{
auto absPos = chunk->RelativeToAbsolute(pos);
if (!cRoot::Get()->GetPluginManager()->CallHookBlockSpread(*chunk->GetWorld(), absPos.x, absPos.y, absPos.z, ssGrassSpread))
{
chunk->FastSetBlock(pos, E_BLOCK_GRASS, 0);
}
}
} // for i - repeat twice
}
virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) override
{
UNUSED(a_Meta);
return 1;
}
} ;
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