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authorTiger Wang <ziwei.tiger@outlook.com>2022-01-02 13:19:13 +0100
committerGitHub <noreply@github.com>2022-01-02 13:19:13 +0100
commit178d1d2bda75e26a9964d2afa2d7fa1210e7f2ea (patch)
treea3c5a1accd053b5191250b71aa9188f3e34b88f1 /src/ClientHandle.cpp
parentHandlers: update item and block handlers (#5371) (diff)
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Diffstat (limited to 'src/ClientHandle.cpp')
-rw-r--r--src/ClientHandle.cpp74
1 files changed, 43 insertions, 31 deletions
diff --git a/src/ClientHandle.cpp b/src/ClientHandle.cpp
index 1d9b8e2a6..16c040e49 100644
--- a/src/ClientHandle.cpp
+++ b/src/ClientHandle.cpp
@@ -1437,38 +1437,45 @@ void cClientHandle::FinishDigAnimation()
void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, eBlockFace a_BlockFace, int a_CursorX, int a_CursorY, int a_CursorZ, bool a_UsedMainHand)
{
- // This function handles three actions:
- // (1) Place a block;
- // (2) "Use" a block: Interactive with the block, like opening a chest/crafting table/furnace;
- // (3) Use the held item targeting a block. E.g. farming.
- //
- // Sneaking player will not use the block if hand is not empty.
- // Frozen player can do nothing.
- // In Game Mode Spectator, player cannot use item or place block, but can interactive with some block depending on cBlockInfo::IsUseableBySpectator(BlockType)
- //
- // If the action failed, we need to send an update of the placed block or inventory to the client.
- //
- // Actions rejected by plugin will not lead to other attempts.
- // E.g., when opening a chest with a dirt in hand, if the plugin rejects opening the chest, the dirt will not be placed.
+ /* This function handles three actions:
+ (1) Place a block;
+ (2) "Use" a block: Interactive with the block, like opening a chest/crafting table/furnace;
+ (3) Use the held item targeting a block. E.g. farming.
+
+ Sneaking player will not use the block if hand is not empty.
+ Frozen player can do nothing.
+ In Game Mode Spectator, player cannot use item or place block, but can interactive with some block depending on cBlockInfo::IsUseableBySpectator(BlockType)
+
+ If the action failed, we need to send an update of the placed block or inventory to the client.
+
+ Actions rejected by plugin will not lead to other attempts.
+ E.g., when opening a chest with a dirt in hand, if the plugin rejects opening the chest, the dirt will not be placed. */
+
+ if ((a_BlockFace == BLOCK_FACE_NONE) || !cChunkDef::IsValidHeight(a_BlockY))
+ {
+ LOGD("Player \"%s\" sent an invalid click - hacked client?", m_Username.c_str());
+ return;
+ }
// TODO: We are still consuming the items in main hand. Remove this override when the off-hand consumption is handled correctly.
a_UsedMainHand = true;
+
+ const Vector3i ClickedPosition(a_BlockX, a_BlockY, a_BlockZ);
+ const Vector3i CursorPosition(a_CursorX, a_CursorY, a_CursorZ);
const cItem & HeldItem = a_UsedMainHand ? m_Player->GetEquippedItem() : m_Player->GetInventory().GetShieldSlot();
- auto & ItemHandler = HeldItem.GetHandler();
- // TODO: This distance should be calculated from the point that the cursor pointing at, instead of the center of the block
- // Distance from the block's center to the player's eye height
- auto ClickedBlockPos = Vector3i(a_BlockX, a_BlockY, a_BlockZ);
- auto CursorPos = Vector3i(a_CursorX, a_CursorY, a_CursorZ);
- double Dist = (Vector3d(ClickedBlockPos) + Vector3d(0.5, 0.5, 0.5) - m_Player->GetEyePosition()).Length();
- FLOGD("HandleRightClick: {0}, face {1}, Cursor {2}, Hand: {3}, HeldItem: {4}; Dist: {5:.02f}",
- ClickedBlockPos, a_BlockFace, CursorPos, a_UsedMainHand, ItemToFullString(HeldItem), Dist
- );
+ // Distance from the block's center to the player's eye height.
+ const double Dist = (Vector3d(0.5, 0.5, 0.5) + ClickedPosition - m_Player->GetEyePosition()).SqrLength();
// Check the reach distance:
// _X 2014-11-25: I've maxed at 5.26 with a Survival client and 5.78 with a Creative client in my tests
- double MaxDist = m_Player->IsGameModeCreative() ? 5.78 : 5.26;
+ double MaxDist = m_Player->IsGameModeCreative() ? 33.4084 : 27.6676;
bool IsWithinReach = (Dist <= MaxDist);
+
+ FLOGD("HandleRightClick: {0}, face {1}, Cursor {2}, Hand: {3}, HeldItem: {4}; Dist: {5:.02f}",
+ ClickedPosition, a_BlockFace, CursorPosition, a_UsedMainHand, ItemToFullString(HeldItem), Dist
+ );
+
cWorld * World = m_Player->GetWorld();
cPluginManager * PlgMgr = cRoot::Get()->GetPluginManager();
@@ -1479,11 +1486,16 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
{
BLOCKTYPE BlockType;
NIBBLETYPE BlockMeta;
- World->GetBlockTypeMeta(ClickedBlockPos, BlockType, BlockMeta);
- const auto & BlockHandler = cBlockHandler::For(BlockType);
- bool Placeable = ItemHandler.IsPlaceable() && !m_Player->IsGameModeAdventure() && !m_Player->IsGameModeSpectator();
- bool BlockUsable = BlockHandler.IsUseable() && (!m_Player->IsGameModeSpectator() || cBlockInfo::IsUseableBySpectator(BlockType));
+ if (!World->GetBlockTypeMeta(ClickedPosition, BlockType, BlockMeta))
+ {
+ return;
+ }
+
+ const auto & ItemHandler = HeldItem.GetHandler();
+ const auto & BlockHandler = cBlockHandler::For(BlockType);
+ const bool Placeable = ItemHandler.IsPlaceable() && !m_Player->IsGameModeAdventure() && !m_Player->IsGameModeSpectator();
+ const bool BlockUsable = BlockHandler.IsUseable() && (!m_Player->IsGameModeSpectator() || cBlockInfo::IsUseableBySpectator(BlockType));
if (BlockUsable && !(m_Player->IsCrouched() && !HeldItem.IsEmpty()))
{
@@ -1491,7 +1503,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
if (!PlgMgr->CallHookPlayerUsingBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, BlockType, BlockMeta))
{
// Use a block:
- if (BlockHandler.OnUse(ChunkInterface, *World, *m_Player, ClickedBlockPos, a_BlockFace, CursorPos))
+ if (BlockHandler.OnUse(ChunkInterface, *World, *m_Player, ClickedPosition, a_BlockFace, CursorPosition))
{
PlgMgr->CallHookPlayerUsedBlock(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ, BlockType, BlockMeta);
return; // Block use was successful, we're done.
@@ -1501,7 +1513,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
if (Placeable)
{
// Place a block:
- ItemHandler.OnPlayerPlace(*m_Player, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace, {a_CursorX, a_CursorY, a_CursorZ});
+ ItemHandler.OnPlayerPlace(*m_Player, HeldItem, ClickedPosition, BlockType, BlockMeta, a_BlockFace, CursorPosition);
}
return;
@@ -1518,7 +1530,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
}
// Place a block:
- ItemHandler.OnPlayerPlace(*m_Player, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace, {a_CursorX, a_CursorY, a_CursorZ});
+ ItemHandler.OnPlayerPlace(*m_Player, HeldItem, ClickedPosition, BlockType, BlockMeta, a_BlockFace, CursorPosition);
return;
}
else if (!PlgMgr->CallHookPlayerUsingItem(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ))
@@ -1527,7 +1539,7 @@ void cClientHandle::HandleRightClick(int a_BlockX, int a_BlockY, int a_BlockZ, e
// Use an item in hand with a target block.
cBlockInServerPluginInterface PluginInterface(*World);
- ItemHandler.OnItemUse(World, m_Player, PluginInterface, HeldItem, {a_BlockX, a_BlockY, a_BlockZ}, a_BlockFace);
+ ItemHandler.OnItemUse(World, m_Player, PluginInterface, HeldItem, ClickedPosition, a_BlockFace);
PlgMgr->CallHookPlayerUsedItem(*m_Player, a_BlockX, a_BlockY, a_BlockZ, a_BlockFace, a_CursorX, a_CursorY, a_CursorZ);
return;
}