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-rw-r--r--src/Mobs/Path.cpp217
1 files changed, 139 insertions, 78 deletions
diff --git a/src/Mobs/Path.cpp b/src/Mobs/Path.cpp
index c0cffbeb4..1c8a3657f 100644
--- a/src/Mobs/Path.cpp
+++ b/src/Mobs/Path.cpp
@@ -42,7 +42,7 @@ cPath::cPath(
// TODO: if src not walkable OR dest not walkable, then abort.
// Borrow a new "isWalkable" from ProcessIfWalkable, make ProcessIfWalkable also call isWalkable
- a_BoundingBoxWidth = 1; // Until we improve physics, if ever.
+ a_BoundingBoxWidth = 1; // Treat all mobs width as 1 until physics is improved. This would also require changes to stepOnce to work.
m_BoundingBoxWidth = CeilC(a_BoundingBoxWidth);
m_BoundingBoxHeight = CeilC(a_BoundingBoxHeight);
@@ -57,7 +57,7 @@ cPath::cPath(
m_Destination.y = FloorC(a_EndingPoint.y);
m_Destination.z = FloorC(a_EndingPoint.z - HalfWidthInt);
- if (GetCell(m_Source)->m_IsSolid || GetCell(m_Destination)->m_IsSolid)
+ if (!IsWalkable(m_Source))
{
m_Status = ePathFinderStatus::PATH_NOT_FOUND;
return;
@@ -190,9 +190,8 @@ bool cPath::StepOnce()
return true;
}
- // Calculation not finished yet.
+ // Calculation not finished yet
// Check if we have a new NearestPoint.
- // TODO I don't like this that much, there should be a smarter way.
if ((m_Destination - CurrentCell->m_Location).Length() < 5)
{
if (m_Rand.NextInt(4) == 0)
@@ -207,46 +206,103 @@ bool cPath::StepOnce()
// process a currentCell by inspecting all neighbors.
- // Check North, South, East, West on our height.
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(1, 0, 0), CurrentCell, 10);
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(-1, 0, 0), CurrentCell, 10);
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, 0, 1), CurrentCell, 10);
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, 0, -1), CurrentCell, 10);
+ // Now we start checking adjacent cells.
- // Check diagonals on XY plane.
- // x = -1: west, x = 1: east.
- for (int x = -1; x <= 1; x += 2)
+
+ bool done_east = false,
+ done_west = false,
+ done_north = false,
+ done_south = false; // If true, no need to do more checks in that direction
+
+ // If we can jump without hitting the ceiling
+ if (BodyFitsIn(CurrentCell->m_Location + Vector3i(0, 1, 0)))
+ {
+ // Check east-up
+ if (GetCell(CurrentCell->m_Location + Vector3i(1, 0, 0))->m_IsSolid)
+ {
+ ProcessIfWalkable(CurrentCell->m_Location + Vector3i(1, 1, 0), CurrentCell, JUMP_G_COST);
+ done_east = true;
+ }
+
+ // Check west-up
+ if (GetCell(CurrentCell->m_Location + Vector3i(-1, 0, 0))->m_IsSolid)
+ {
+ ProcessIfWalkable(CurrentCell->m_Location + Vector3i(-1, 1, 0), CurrentCell, JUMP_G_COST);
+ done_west = true;
+ }
+
+ // Check north-up
+ if (GetCell(CurrentCell->m_Location + Vector3i(0, 0, -1))->m_IsSolid)
+ {
+ ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, 1, -1), CurrentCell, JUMP_G_COST);
+ done_north = true;
+ }
+
+ // Check south-up
+ if (GetCell(CurrentCell->m_Location + Vector3i(0, 0, 1))->m_IsSolid)
+ {
+ ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, 1, 1), CurrentCell, JUMP_G_COST);
+ done_south = true;
+ }
+
+ }
+
+
+ // Check North, South, East, West at our own height or below. We are willing to jump up to 3 blocks down.
+
+
+ if (!done_east)
{
- if (GetCell(CurrentCell->m_Location + Vector3i(x, 0, 0))->m_IsSolid) // If there's a solid our east / west.
+ for (int i = 0; i >= -3; --i)
{
- if (!GetCell(CurrentCell->m_Location + Vector3i(0, 1, 0))->m_IsSolid) // If there isn't a solid above.
+ if (ProcessIfWalkable(CurrentCell->m_Location + Vector3i(1, i, 0), CurrentCell, 10))
{
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(x, 1, 0), CurrentCell, JUMP_G_COST); // Check east-up / west-up.
+ done_east = true;
+ break;
}
}
- else
+ }
+
+ if (!done_west)
+ {
+ for (int i = 0; i >= -3; --i)
{
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(x, -1, 0), CurrentCell, 14); // Else check east-down / west-down.
+ if (ProcessIfWalkable(CurrentCell->m_Location + Vector3i(-1, i, 0), CurrentCell, 10))
+ {
+ done_west = true;
+ break;
+ }
}
}
- // Check diagonals on the YZ plane.
- for (int z = -1; z <= 1; z += 2)
+ if (!done_south)
{
- if (GetCell(CurrentCell->m_Location + Vector3i(0, 0, z))->m_IsSolid) // If there's a solid our north / south.
+ for (int i = 0; i >= -3; --i)
{
- if (!GetCell(CurrentCell->m_Location + Vector3i(0, 1, 0))->m_IsSolid) // If there isn't a solid above.
+ if (ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, i, 1), CurrentCell, 10))
{
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, 1, z), CurrentCell, JUMP_G_COST); // Check north-up / south-up.
+ done_west = true;
+ break;
}
}
- else
+ }
+
+ if (!done_north)
+ {
+ for (int i = 0; i >= -3; --i)
{
- ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, -1, z), CurrentCell, 14); // Else check north-down / south-down.
+ if (ProcessIfWalkable(CurrentCell->m_Location + Vector3i(0, i, -1), CurrentCell, 10))
+ {
+ done_north = true;
+ break;
+ }
}
}
- // Check diagonals on the XZ plane. (Normal diagonals, this plane is special because of gravity, etc)
+
+ // Check diagonals
+
+
for (int x = -1; x <= 1; x += 2)
{
for (int z = -1; z <= 1; z += 2)
@@ -351,7 +407,7 @@ cPathCell * cPath::OpenListPop() // Popping from the open list also means addin
m_OpenList.pop();
Ret->m_Status = eCellStatus::CLOSEDLIST;
#ifdef COMPILING_PATHFIND_DEBUGGER
-si::setBlock((Ret)->m_Location.x, (Ret)->m_Location.y, (Ret)->m_Location.z, debug_closed, SetMini(Ret));
+ si::setBlock((Ret)->m_Location.x, (Ret)->m_Location.y, (Ret)->m_Location.z, debug_closed, SetMini(Ret));
#endif
return Ret;
}
@@ -360,61 +416,14 @@ si::setBlock((Ret)->m_Location.x, (Ret)->m_Location.y, (Ret)->m_Location.z, debu
-void cPath::ProcessIfWalkable(const Vector3i & a_Location, cPathCell * a_Parent, int a_Cost)
+bool cPath::ProcessIfWalkable(const Vector3i & a_Location, cPathCell * a_Parent, int a_Cost)
{
- cPathCell * cell = GetCell(a_Location);
- int x, y, z;
-
- // Make sure we fit in the position.
- for (y = 0; y < m_BoundingBoxHeight; ++y)
- {
- for (x = 0; x < m_BoundingBoxWidth; ++x)
- {
- for (z = 0; z < m_BoundingBoxWidth; ++z)
- {
- if (GetCell(a_Location + Vector3i(x, y, z))->m_IsSolid)
- {
- return;
- }
- }
- }
- }
-
- /*
- y = -1;
- for (x = 0; x < m_BoundingBoxWidth; ++x)
- {
- for (z = 0; z < m_BoundingBoxWidth; ++z)
- {
- if (!GetCell(a_Location + Vector3i(x, y, z))->m_IsSolid)
- {
- return;
- }
- }
- }
- ProcessCell(cell, a_Parent, a_Cost);
- */
-
- // Make sure there's at least 1 piece of solid below us.
-
- bool GroundFlag = false;
- y =-1;
- for (x = 0; x < m_BoundingBoxWidth; ++x)
- {
- for (z = 0; z < m_BoundingBoxWidth; ++z)
- {
- if (GetCell(a_Location + Vector3i(x, y, z))->m_IsSolid)
- {
- GroundFlag = true;
- break;
- }
- }
- }
-
- if (GroundFlag)
+ if (IsWalkable(a_Location))
{
- ProcessCell(cell, a_Parent, a_Cost);
+ ProcessCell(GetCell(a_Location), a_Parent, a_Cost);
+ return true;
}
+ return false;
}
@@ -497,3 +506,55 @@ cPathCell * cPath::GetCell(const Vector3i & a_Location)
return &m_Map[a_Location];
}
}
+
+
+
+
+
+bool cPath::IsWalkable(const Vector3i & a_Location)
+{
+ return (HasSolidBelow(a_Location) && BodyFitsIn(a_Location));
+}
+
+
+
+
+
+bool cPath::BodyFitsIn(const Vector3i & a_Location)
+{
+ int x, y, z;
+ for (y = 0; y < m_BoundingBoxHeight; ++y)
+ {
+ for (x = 0; x < m_BoundingBoxWidth; ++x)
+ {
+ for (z = 0; z < m_BoundingBoxWidth; ++z)
+ {
+ if (GetCell(a_Location + Vector3i(x, y, z))->m_IsSolid)
+ {
+ return false;
+ }
+ }
+ }
+ }
+ return true;
+}
+
+
+
+
+
+bool cPath::HasSolidBelow(const Vector3i & a_Location)
+{
+ int x, z;
+ for (x = 0; x < m_BoundingBoxWidth; ++x)
+ {
+ for (z = 0; z < m_BoundingBoxWidth; ++z)
+ {
+ if (GetCell(a_Location + Vector3i(x, -1, z))->m_IsSolid)
+ {
+ return true;
+ }
+ }
+ }
+ return false;
+}
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