152 lines
3.4 KiB
C++
152 lines
3.4 KiB
C++
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#pragma once
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#include "BlockHandler.h"
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#include "ChunkInterface.h"
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#include "../BlockInfo.h"
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#include "../Items/ItemHandler.h"
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class cBlockBigFlowerHandler final :
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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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using Super::Super;
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private:
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virtual bool DoesIgnoreBuildCollision(const cWorld & a_World, const cItem & a_HeldItem, const Vector3i a_Position, NIBBLETYPE a_Meta, const eBlockFace a_ClickedBlockFace, const bool a_ClickedDirectly) const override
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{
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if (IsMetaTopPart(a_Meta))
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{
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BLOCKTYPE BottomType;
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if (
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(a_Position.y < 1) ||
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!a_World.GetBlockTypeMeta(a_Position - Vector3i(0, 1, 0), BottomType, a_Meta) ||
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(BottomType != E_BLOCK_BIG_FLOWER)
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)
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{
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// Can't find the flower meta so assume grass
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return true;
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}
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}
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NIBBLETYPE FlowerMeta = a_Meta & 0x07;
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return (
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(FlowerMeta == E_META_BIG_FLOWER_DOUBLE_TALL_GRASS) ||
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(FlowerMeta == E_META_BIG_FLOWER_LARGE_FERN)
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);
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}
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virtual cItems ConvertToPickups(const NIBBLETYPE a_BlockMeta, const cItem * const a_Tool) const override
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{
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if (IsMetaTopPart(a_BlockMeta))
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{
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return {}; // No drops from the top part
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}
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// With shears, drop self (even tall grass and fern):
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if ((a_Tool != nullptr) && (a_Tool->m_ItemType == E_ITEM_SHEARS))
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{
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// Bit 0x08 specifies whether this is a top part or bottom; cut it off from the pickup:
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return cItem(m_BlockType, 1, a_BlockMeta & 0x07);
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}
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// Tall grass drops seeds, large fern drops nothing, others drop self:
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auto flowerType = a_BlockMeta & 0x07;
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if (flowerType == E_META_BIG_FLOWER_DOUBLE_TALL_GRASS)
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{
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// Drop seeds, depending on bernoulli trial result:
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if (GetRandomProvider().RandBool(0.875))
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{
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// 87.5% chance of dropping nothing:
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return {};
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}
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// 12.5% chance of dropping some seeds.
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const auto DropNum = FortuneDiscreteRandom(1, 1, 2 * ToolFortuneLevel(a_Tool));
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return cItem(E_ITEM_SEEDS, DropNum);
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}
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else if (flowerType != E_META_BIG_FLOWER_LARGE_FERN)
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{
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return cItem(m_BlockType, 1, static_cast<short>(flowerType));
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}
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return {};
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}
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static bool IsMetaTopPart(NIBBLETYPE a_Meta)
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{
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return ((a_Meta & 0x08) != 0);
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}
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virtual bool CanBeAt(const cChunk & a_Chunk, const Vector3i a_Position, const NIBBLETYPE a_Meta) const override
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{
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// CanBeAt is also called on placement, so the top part can't check for the bottom part.
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// Both parts can only that they're rooted in grass.
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const auto RootPosition = a_Position.addedY(IsMetaTopPart(a_Meta) ? -2 : -1);
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return (RootPosition.y >= 0) && IsBlockTypeOfDirt(a_Chunk.GetBlock(RootPosition));
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}
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virtual void OnBroken(
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cChunkInterface & a_ChunkInterface, cWorldInterface & a_WorldInterface,
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const Vector3i a_BlockPos,
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BLOCKTYPE a_OldBlockType, NIBBLETYPE a_OldBlockMeta,
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const cEntity * a_Digger
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) const override
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{
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UNUSED(a_Digger);
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if ((a_OldBlockMeta & 0x8) != 0)
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{
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// Was upper part of flower
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auto lowerPartPos = a_BlockPos - Vector3i(0, 1, 0);
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if (a_ChunkInterface.GetBlock(lowerPartPos) == a_OldBlockType)
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{
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a_ChunkInterface.DropBlockAsPickups(lowerPartPos);
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}
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}
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else
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{
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// Was lower part
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auto upperPartPos = a_BlockPos + Vector3i(0, 1, 0);
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if (a_ChunkInterface.GetBlock(upperPartPos) == a_OldBlockType)
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{
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a_ChunkInterface.DropBlockAsPickups(upperPartPos);
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}
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}
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}
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virtual ColourID GetMapBaseColourID(NIBBLETYPE a_Meta) const override
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{
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UNUSED(a_Meta);
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return 7;
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}
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} ;
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