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-rw-r--r--src/Blocks/BlockSnow.h50
1 files changed, 38 insertions, 12 deletions
diff --git a/src/Blocks/BlockSnow.h b/src/Blocks/BlockSnow.h
index ef715b74a..b631aae98 100644
--- a/src/Blocks/BlockSnow.h
+++ b/src/Blocks/BlockSnow.h
@@ -11,6 +11,11 @@ class cBlockSnowHandler :
public cBlockHandler
{
public:
+ enum
+ {
+ FullBlockMeta = 7 // Meta value of a full-height snow block
+ };
+
cBlockSnowHandler(BLOCKTYPE a_BlockType)
: cBlockHandler(a_BlockType)
{
@@ -29,21 +34,30 @@ public:
NIBBLETYPE MetaBeforePlacement;
a_ChunkInterface.GetBlockTypeMeta(a_BlockX, a_BlockY, a_BlockZ, BlockBeforePlacement, MetaBeforePlacement);
- if ((BlockBeforePlacement == E_BLOCK_SNOW) && (MetaBeforePlacement < 7))
+ if ((BlockBeforePlacement == E_BLOCK_SNOW) && (MetaBeforePlacement < FullBlockMeta))
{
// Only increment if:
// - A snow block was already there (not first time placement) AND
- // - Height is smaller than 7, the maximum possible height
- MetaBeforePlacement++;
+ // - Height is smaller than the maximum possible
+ a_BlockMeta = MetaBeforePlacement + 1;
+ return true;
}
- a_BlockMeta = MetaBeforePlacement;
- return true;
+ // First time placement, check placement is valid
+ a_BlockMeta = 0;
+
+ BLOCKTYPE BlockBelow;
+ NIBBLETYPE MetaBelow;
+ return (
+ (a_BlockY > 0) &&
+ a_ChunkInterface.GetBlockTypeMeta(a_BlockX, a_BlockY - 1, a_BlockZ, BlockBelow, MetaBelow) &&
+ CanBeOn(BlockBelow, MetaBelow)
+ );
}
virtual bool DoesIgnoreBuildCollision(cChunkInterface & a_ChunkInterface, Vector3i a_Pos, cPlayer & a_Player, NIBBLETYPE a_Meta) override
{
- if ((a_Player.GetEquippedItem().m_ItemType == E_BLOCK_SNOW) && (a_Meta < 7))
+ if ((a_Player.GetEquippedItem().m_ItemType == E_BLOCK_SNOW) && (a_Meta < FullBlockMeta))
{
return true; // If a player is holding a (thin) snow block and it's size can be increased, return collision ignored
}
@@ -68,11 +82,7 @@ public:
BLOCKTYPE BlockBelow = a_Chunk.GetBlock(a_RelX, a_RelY - 1, a_RelZ);
NIBBLETYPE MetaBelow = a_Chunk.GetMeta(a_RelX, a_RelY - 1, a_RelZ);
- if (cBlockInfo::IsSnowable(BlockBelow) || ((BlockBelow == E_BLOCK_SNOW) && (MetaBelow == 7)))
- {
- // If block below is snowable, or it is a thin slow block and has a meta of 7 (full thin snow block), say yay
- return true;
- }
+ return CanBeOn(BlockBelow, MetaBelow);
}
return false;
@@ -91,8 +101,24 @@ public:
virtual bool IsInsideBlock(const Vector3d & a_Position, const BLOCKTYPE a_BlockType, const NIBBLETYPE a_BlockMeta) override
{
- return a_Position.y < (cBlockInfo::GetBlockHeight(a_BlockType) * (a_BlockMeta & 7));
+ return a_Position.y < (cBlockInfo::GetBlockHeight(a_BlockType) * (a_BlockMeta & 0x07));
+ }
+
+private:
+
+ /** Returns true if snow can be placed on top of a block with the given type and meta. */
+ static bool CanBeOn(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta)
+ {
+ // If block below is snowable, or it is a thin slow block and is a full thin snow block, say yay
+ return (
+ cBlockInfo::IsSnowable(a_BlockType) ||
+ (
+ (a_BlockType == E_BLOCK_SNOW) &&
+ (a_BlockMeta == FullBlockMeta)
+ )
+ );
}
+
} ;