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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 & a_ChunkInterface,
cWorldInterface & a_WorldInterface,
cBlockPluginInterface & a_PluginInterface,
cChunk & a_Chunk,
const Vector3i a_RelPos
) override
{
if (!a_Chunk.GetWorld()->IsChunkLighted(a_Chunk.GetPosX(), a_Chunk.GetPosZ()))
{
a_Chunk.GetWorld()->QueueLightChunk(a_Chunk.GetPosX(), a_Chunk.GetPosZ());
return;
}
auto AbovePos = a_RelPos.addedY(1);
if (cChunkDef::IsValidHeight(AbovePos.y))
{
// 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.
auto Above = a_Chunk.GetBlock(AbovePos);
if (
(Above != E_BLOCK_SNOW) &&
(!cBlockInfo::IsTransparent(Above) || IsBlockWater(Above)))
{
a_Chunk.FastSetBlock(a_RelPos, E_BLOCK_DIRT, E_META_DIRT_NORMAL);
return;
}
// Make sure that there is enough light at the source block to spread
auto light = std::max(a_Chunk.GetBlockLight(AbovePos), a_Chunk.GetTimeAlteredLight(a_Chunk.GetSkyLight(AbovePos)));
if (light < 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;
auto Pos = a_RelPos + Vector3i(OfsX, OfsY, OfsZ);
if (!cChunkDef::IsValidHeight(Pos.y))
{
// Y Coord out of range
continue;
}
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;
}
BLOCKTYPE Above = chunk->GetBlock(AbovePos);
NIBBLETYPE light = std::max(chunk->GetBlockLight(AbovePos), chunk->GetTimeAlteredLight(chunk->GetSkyLight(AbovePos)));
if ((light > 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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