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Re-implement repeater locking

This commit is contained in:
Tiger Wang 2020-04-17 09:40:26 +01:00
parent a55f61548e
commit c1ea5f982d
3 changed files with 111 additions and 20 deletions
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7
src/BlockType.h
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@ -778,6 +778,13 @@ enum ENUM_BLOCK_META : NIBBLETYPE
E_META_RED_SANDSTONE_ORNAMENT = 1,
E_META_RED_SANDSTONE_SMOOTH = 2,
// E_BLOCK_REDSTONE_REPEATER_ON / E_BLOCK_REDSTONE_REPEATER_OFF metas:
E_META_REDSTONE_REPEATER_FACING_ZM = 0,
E_META_REDSTONE_REPEATER_FACING_XP = 1,
E_META_REDSTONE_REPEATER_FACING_ZP = 2,
E_META_REDSTONE_REPEATER_FACING_XM = 3,
E_META_REDSTONE_REPEATER_FACING_MASK = 3,
// E_BLOCK_SAND metas:
E_META_SAND_NORMAL = 0,
E_META_SAND_RED = 1,

34
src/Blocks/BlockRedstoneRepeater.h
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@ -77,38 +77,42 @@ public:
return 11;
}
inline static Vector3i GetRearCoordinateOffset(NIBBLETYPE a_Meta)
inline static Vector3i GetLeftCoordinateOffset(NIBBLETYPE a_Meta)
{
switch (a_Meta & 0x3) // We only want the direction (bottom) bits
switch (a_Meta & E_META_REDSTONE_REPEATER_FACING_MASK) // We only want the direction (bottom) bits
{
case 0x0: return {0, 0, 1};
case 0x1: return {-1, 0, 0};
case 0x2: return {0, 0, -1};
case 0x3: return {1, 0, 0};
case E_META_REDSTONE_REPEATER_FACING_ZM: return { -1, 0, 0 };
case E_META_REDSTONE_REPEATER_FACING_XP: return { 0, 0, -1 };
case E_META_REDSTONE_REPEATER_FACING_ZP: return { 1, 0, 0 };
case E_META_REDSTONE_REPEATER_FACING_XM: return { 0, 0, 1 };
default:
{
LOGWARNING("%s: Unknown metadata: %d", __FUNCTION__, a_Meta);
ASSERT(!"Unknown metadata while determining orientation of repeater!");
return {0, 0, 0};
return { 0, 0, 0 };
}
}
}
inline static Vector3i GetFrontCoordinateOffset(NIBBLETYPE a_Meta)
{
switch (a_Meta & 0x3) // We only want the direction (bottom) bits
return -GetRearCoordinateOffset(a_Meta);
}
inline static Vector3i GetRearCoordinateOffset(NIBBLETYPE a_Meta)
{
switch (a_Meta & E_META_REDSTONE_REPEATER_FACING_MASK) // We only want the direction (bottom) bits
{
case 0x0: return {0, 0, -1};
case 0x1: return {1, 0, 0};
case 0x2: return {0, 0, 1};
case 0x3: return {-1, 0, 0};
case E_META_REDSTONE_REPEATER_FACING_ZM: return { 0, 0, 1 };
case E_META_REDSTONE_REPEATER_FACING_XP: return { -1, 0, 0 };
case E_META_REDSTONE_REPEATER_FACING_ZP: return { 0, 0, -1 };
case E_META_REDSTONE_REPEATER_FACING_XM: return { 1, 0, 0 };
default:
{
LOGWARNING("%s: Unknown metadata: %d", __FUNCTION__, a_Meta);
ASSERT(!"Unknown metadata while determining orientation of repeater!");
return {0, 0, 0};
return { 0, 0, 0 };
}
}
}

90
src/Simulator/IncrementalRedstoneSimulator/RedstoneRepeaterHandler.h
View File

@ -15,11 +15,6 @@ class cRedstoneRepeaterHandler:
public:
inline static bool IsOn(BLOCKTYPE a_Block)
{
return (a_Block == E_BLOCK_REDSTONE_REPEATER_ON);
}
virtual unsigned char GetPowerDeliveredToPosition(cWorld & a_World, Vector3i a_Position, BLOCKTYPE a_BlockType, NIBBLETYPE a_Meta, Vector3i a_QueryPosition, BLOCKTYPE a_QueryBlockType) const override
{
return (
@ -42,6 +37,17 @@ public:
auto Data = static_cast<cIncrementalRedstoneSimulator *>(a_World.GetRedstoneSimulator())->GetChunkData();
auto DelayInfo = Data->GetMechanismDelayInfo(a_Position);
// If the repeater is locked by another, ignore and forget all power changes:
if (IsLocked(a_World, a_Position, a_Meta))
{
if (DelayInfo != nullptr)
{
Data->m_MechanismDelays.erase(a_Position);
}
return {};
}
if (DelayInfo == nullptr)
{
bool ShouldBeOn = (a_PoweringData.PowerLevel != 0);
@ -71,4 +77,78 @@ public:
{
return { cBlockRedstoneRepeaterHandler::GetRearCoordinateOffset(a_Meta) + a_Position };
}
private:
inline static bool IsOn(BLOCKTYPE a_Block)
{
return (a_Block == E_BLOCK_REDSTONE_REPEATER_ON);
}
/** Returns a pair with first element indicating if the block at the given position is an activated repeater.
If it is activated, the second element is the repeater metadata. */
static std::pair<bool, NIBBLETYPE> IsOnRepeater(cWorld & a_World, const Vector3i a_Position)
{
BLOCKTYPE Type;
NIBBLETYPE Meta;
if (!a_World.GetBlockTypeMeta(a_Position, Type, Meta))
{
return std::make_pair(false, 0);
}
return std::make_pair(IsOn(Type), Meta);
}
/** Determine if a repeater is locked.
A locked repeater is one with another powered repeater facing them, to their immediate left or right sides.
"Left" is relative to the direction the repeater output faces, naturally. */
inline static bool IsLocked(cWorld & a_World, const Vector3i a_Position, const NIBBLETYPE a_Meta)
{
// The left hand side offset. Will be negated to get the rhs offset
const auto LhsOffset = cBlockRedstoneRepeaterHandler::GetLeftCoordinateOffset(a_Meta);
// Test the block to the left of us
const auto Lhs = IsOnRepeater(a_World, LhsOffset + a_Position);
if (Lhs.first && DoesLhsLockMe(Lhs.second, a_Meta))
{
return true;
}
// Test the right side, flipping the argument order to DoesLhsLockMe
const auto Rhs = IsOnRepeater(a_World, -LhsOffset + a_Position);
return Rhs.first && DoesLhsLockMe(a_Meta, Rhs.second);
}
/** Determine, from the metadata of a repeater on our left side, if they lock us.
To test a repeater on our right, simply invert the order of arguments provided.
"Left" is relative to the direction the repeater output faces, naturally. */
static bool DoesLhsLockMe(NIBBLETYPE a_MetaLhs, NIBBLETYPE a_MyMeta)
{
// Get the direction bits
a_MetaLhs &= E_META_REDSTONE_REPEATER_FACING_MASK;
a_MyMeta &= E_META_REDSTONE_REPEATER_FACING_MASK;
/*
Check for a valid locking configuration, where they are perpendicular and one snuggles into the other.
Order of comparisons:
XP >^ ZM
ZP |_ XP
XM <| ZP
ZP ^< xM
Key:
^ Facing up
_ Facing right
| Facing down
< Facing left
*/
return
((a_MetaLhs == E_META_REDSTONE_REPEATER_FACING_XP) && (a_MyMeta == E_META_REDSTONE_REPEATER_FACING_ZM)) ||
((a_MetaLhs == E_META_REDSTONE_REPEATER_FACING_ZP) && (a_MyMeta == E_META_REDSTONE_REPEATER_FACING_XP)) ||
((a_MetaLhs == E_META_REDSTONE_REPEATER_FACING_XM) && (a_MyMeta == E_META_REDSTONE_REPEATER_FACING_ZP)) ||
((a_MetaLhs == E_META_REDSTONE_REPEATER_FACING_ZM) && (a_MyMeta == E_META_REDSTONE_REPEATER_FACING_XM))
;
}
};