109 lines
2.4 KiB
C++
109 lines
2.4 KiB
C++
|
|
#pragma once
|
|
|
|
#include "ItemHandler.h"
|
|
#include "Blocks/BlockChest.h"
|
|
|
|
|
|
|
|
|
|
|
|
class cItemChestHandler:
|
|
public cItemHandler
|
|
{
|
|
using Super = cItemHandler;
|
|
|
|
public:
|
|
|
|
cItemChestHandler(int a_ItemType):
|
|
Super(a_ItemType)
|
|
{
|
|
}
|
|
|
|
cItemChestHandler(const cItemChestHandler &) = delete;
|
|
|
|
private:
|
|
|
|
virtual bool CommitPlacement(cPlayer & a_Player, const cItem & a_HeldItem, const Vector3i a_PlacePosition, const eBlockFace a_ClickedBlockFace, const Vector3i a_CursorPosition) override
|
|
{
|
|
// Check that there is at most one single neighbor of the same chest type:
|
|
static const Vector3i CrossCoords[] =
|
|
{
|
|
{-1, 0, 0},
|
|
{ 0, 0, -1},
|
|
{ 1, 0, 0},
|
|
{ 0, 0, 1},
|
|
};
|
|
|
|
auto & World = *a_Player.GetWorld();
|
|
int NeighborIdx = -1;
|
|
|
|
for (size_t i = 0; i < ARRAYCOUNT(CrossCoords); i++)
|
|
{
|
|
const auto NeighborPos = a_PlacePosition + CrossCoords[i];
|
|
if (World.GetBlock(NeighborPos) != m_ItemType)
|
|
{
|
|
continue;
|
|
}
|
|
if (NeighborIdx >= 0)
|
|
{
|
|
// Can't place here, there are already two neighbors, this would form a 3-block chest
|
|
return false;
|
|
}
|
|
NeighborIdx = static_cast<int>(i);
|
|
|
|
// Check that this neighbor is a single chest:
|
|
for (size_t j = 0; j < ARRAYCOUNT(CrossCoords); j++)
|
|
{
|
|
if (World.GetBlock(NeighborPos + CrossCoords[j]) == m_ItemType)
|
|
{
|
|
// Trying to place next to a dblchest
|
|
return false;
|
|
}
|
|
} // for j
|
|
} // for i
|
|
|
|
// Get the meta of the placed chest; take existing neighbors into account:
|
|
BLOCKTYPE ChestBlockType = static_cast<BLOCKTYPE>(m_ItemType);
|
|
NIBBLETYPE Meta;
|
|
const auto yaw = a_Player.GetYaw();
|
|
switch (NeighborIdx)
|
|
{
|
|
case 0:
|
|
case 2:
|
|
{
|
|
// The neighbor is in the X axis, form a X-axis-aligned dblchest:
|
|
Meta = ((yaw >= -90) && (yaw < 90)) ? E_META_CHEST_FACING_ZM : E_META_CHEST_FACING_ZP;
|
|
break;
|
|
}
|
|
case 1:
|
|
case 3:
|
|
{
|
|
// The neighbor is in the Z axis, form a Z-axis-aligned dblchest:
|
|
Meta = (yaw < 0) ? E_META_CHEST_FACING_XM : E_META_CHEST_FACING_XP;
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
// No neighbor, place based on yaw:
|
|
Meta = cBlockChestHandler::YawToMetaData(yaw);
|
|
break;
|
|
}
|
|
} // switch (NeighborIdx)
|
|
|
|
// Place the new chest:
|
|
if (!a_Player.PlaceBlock(a_PlacePosition, ChestBlockType, Meta))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Adjust the existing chest, if any:
|
|
if (NeighborIdx != -1)
|
|
{
|
|
World.FastSetBlock(a_PlacePosition + CrossCoords[NeighborIdx], ChestBlockType, Meta);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
};
|