303 lines
6.9 KiB
C++
303 lines
6.9 KiB
C++
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#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
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#include "NetherPortalScanner.h"
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#include "Entities/Entity.h"
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#include "World.h"
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const double cNetherPortalScanner::OutOffset = 2;
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const double cNetherPortalScanner::AcrossOffset = 0.5;
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cNetherPortalScanner::cNetherPortalScanner(cEntity * a_MovingEntity, cWorld * a_DestinationWorld, Vector3d a_DestPosition, int a_MaxY) :
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m_Entity(a_MovingEntity),
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m_World(a_DestinationWorld),
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m_FoundPortal(false),
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m_BuildPlatform(true),
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m_Dir(Direction::X),
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m_PortalLoc(a_DestPosition.Floor()),
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m_Position(a_DestPosition),
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m_MaxY(a_MaxY)
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{
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int MinX = FloorC((m_Position.x - SearchRadius) / cChunkDef::Width);
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int MinZ = FloorC((m_Position.z - SearchRadius) / cChunkDef::Width);
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int MaxX = CeilC((m_Position.x + SearchRadius) / cChunkDef::Width);
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int MaxZ = CeilC((m_Position.z + SearchRadius) / cChunkDef::Width);
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for (int x = MinX; x < MaxX; x++)
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{
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for (int z = MinZ; z < MaxZ; z++)
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{
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Add(x, z);
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}
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}
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Enable(*a_DestinationWorld->GetChunkMap());
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}
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void cNetherPortalScanner::OnChunkAvailable(int a_ChunkX, int a_ChunkZ)
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{
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cChunkDef::BlockTypes blocks;
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m_World->GetChunkBlockTypes(a_ChunkX, a_ChunkZ, blocks);
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// Iterate through all of the blocks in the chunk
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for (unsigned int i = 0; i < cChunkDef::NumBlocks; i++)
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{
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if (blocks[i] == E_BLOCK_NETHER_PORTAL)
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{
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Vector3i Coordinate = cChunkDef::IndexToCoordinate(i);
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if (Coordinate.y >= m_MaxY)
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{
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// This is above the map, don't consider it.
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continue;
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}
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Vector3d PortalLoc = Vector3d(Coordinate.x + a_ChunkX * cChunkDef::Width, Coordinate.y, Coordinate.z + a_ChunkZ * cChunkDef::Width);
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if (!m_FoundPortal)
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{
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m_FoundPortal = true;
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m_PortalLoc = PortalLoc;
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}
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else
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{
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if ((PortalLoc - m_Position).SqrLength() < (m_PortalLoc - m_Position).SqrLength())
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{
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m_FoundPortal = true;
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m_PortalLoc = PortalLoc;
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}
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}
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}
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}
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}
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bool cNetherPortalScanner::IsValidBuildLocation(Vector3i a_BlockPos)
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{
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// Check the base
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for (int i = 0; i < SearchSolidBaseWidth; i++)
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{
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for (int j = 0; j < PortalLength; j++)
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{
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BLOCKTYPE blocktype = m_World->GetBlock(a_BlockPos.x + i, a_BlockPos.y, a_BlockPos.z + j);
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if (!cBlockInfo::IsSolid(blocktype))
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{
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return false;
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}
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// Check the airspace
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for (int k = 1; k < PortalHeight; k++)
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{
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blocktype = m_World->GetBlock(a_BlockPos.x + i, a_BlockPos.y + k, a_BlockPos.z + j);
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if (blocktype != E_BLOCK_AIR)
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{
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return false;
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}
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}
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}
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}
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return true;
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}
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bool cNetherPortalScanner::OnAllChunksAvailable(void)
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{
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if (m_FoundPortal)
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{
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// Find the bottom of this portal
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while (m_World->GetBlock(m_PortalLoc.x, m_PortalLoc.y, m_PortalLoc.z) == E_BLOCK_NETHER_PORTAL)
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{
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m_PortalLoc.y -= 1;
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}
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m_PortalLoc.y += 1;
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// Figure out which way the portal is facing
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int BXP = m_World->GetBlock(m_PortalLoc.x + 1, m_PortalLoc.y, m_PortalLoc.z);
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int BXM = m_World->GetBlock(m_PortalLoc.x - 1, m_PortalLoc.y, m_PortalLoc.z);
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if ((BXP == E_BLOCK_NETHER_PORTAL) || (BXM == E_BLOCK_NETHER_PORTAL))
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{
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// The long axis is along X
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m_Dir = Direction::X;
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}
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else
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{
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// The long axis is along Z
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m_Dir = Direction::Y;
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}
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}
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else
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{
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// Scan the area for a suitable location
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int minx = FloorC(m_Position.x) - BuildSearchRadius;
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int minz = FloorC(m_Position.z) - BuildSearchRadius;
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int maxx = FloorC(m_Position.x) + BuildSearchRadius;
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int maxz = FloorC(m_Position.z) + BuildSearchRadius;
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int maxy = m_MaxY;
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std::vector<Vector3i> Possibilities;
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int x, y, z;
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for (y = 0; y < maxy - PortalHeight; y++)
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{
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for (x = minx; x < maxx - PortalLength; x++)
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{
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for (z = minz; z < maxz - SearchSolidBaseWidth; z++)
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{
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Vector3i Location = Vector3i(x, y, z);
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if (IsValidBuildLocation(Location))
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{
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Possibilities.push_back(Vector3i(x, y, z));
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}
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}
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}
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}
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if (Possibilities.size() > 0)
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{
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m_BuildPlatform = false;
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// Find the nearest
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double DistanceToClosest = (Possibilities[0] - m_Position).SqrLength();
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Vector3i Closest = Possibilities[0];
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for (const auto & itr : Possibilities)
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{
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double Distance = (itr - m_Position).SqrLength();
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if (Distance < DistanceToClosest)
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{
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DistanceToClosest = Distance;
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Closest = itr;
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}
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}
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m_PortalLoc = Closest;
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}
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}
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return true;
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}
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void cNetherPortalScanner::BuildNetherPortal(Vector3i a_Location, Direction a_Direction, bool a_IncludePlatform)
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{
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int x = a_Location.x;
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int y = a_Location.y;
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int z = a_Location.z;
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// Clear a 3x4x4 area starting right above the base
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for (int i = 0; i < SearchSolidBaseWidth; i++)
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{
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for (int j = 0; j < PortalLength; j++)
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{
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for (int k = 1; k < PortalHeight; k++)
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{
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if (a_Direction == Direction::Y)
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{
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m_World->SetBlock(x + i, y + k, z + j, E_BLOCK_AIR, 0);
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}
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else if (a_Direction == Direction::X)
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{
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m_World->SetBlock(x + j, y + k, z + i, E_BLOCK_AIR, 0);
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}
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}
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}
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}
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// Put in an obsidian base
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if (a_IncludePlatform)
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{
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for (int j = 0; j < PortalLength; j++)
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{
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// +2 on the short axis because that's where we deposit the entity
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if (a_Direction == Direction::Y)
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{
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m_World->SetBlock(x + 2, y, z + j, E_BLOCK_OBSIDIAN, 0);
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}
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else if (a_Direction == Direction::X)
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{
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m_World->SetBlock(x + j, y, z + 2, E_BLOCK_OBSIDIAN, 0);
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}
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}
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}
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// Build an obsidian frame
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for (int i = 0; i < PortalHeight; i++)
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{
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if (a_Direction == Direction::Y)
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{
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m_World->SetBlock(x + 1, y + i, z, E_BLOCK_OBSIDIAN, 0);
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m_World->SetBlock(x + 1, y + i, z + 3, E_BLOCK_OBSIDIAN, 0);
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}
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else if (a_Direction == Direction::X)
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{
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m_World->SetBlock(x, y + i, z + 1, E_BLOCK_OBSIDIAN, 0);
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m_World->SetBlock(x + 3, y + i, z + 1, E_BLOCK_OBSIDIAN, 0);
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}
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}
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for (int i = 0; i < PortalLength; i++)
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{
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if (a_Direction == Direction::Y)
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{
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m_World->SetBlock(x + 1, y + 4, z + i, E_BLOCK_OBSIDIAN, 0);
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m_World->SetBlock(x + 1, y, z + i, E_BLOCK_OBSIDIAN, 0);
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}
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else if (a_Direction == Direction::X)
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{
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m_World->SetBlock(x + i, y + 4, z + 1, E_BLOCK_OBSIDIAN, 0);
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m_World->SetBlock(x + i, y, z + 1, E_BLOCK_OBSIDIAN, 0);
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}
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}
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// Fill the frame (place a fire in the bottom)
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m_World->SetBlock(x + 1, y + 1, z + 1, E_BLOCK_FIRE, 0);
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}
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void cNetherPortalScanner::OnDisabled(void)
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{
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// Now we actually move the player
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if (!m_FoundPortal)
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{
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// Build a new nether portal.
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LOGD("Building nether portal at {%d, %d, %d}", m_PortalLoc.x, m_PortalLoc.y, m_PortalLoc.z);
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BuildNetherPortal(m_PortalLoc, m_Dir, m_BuildPlatform);
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m_PortalLoc.x += 1;
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m_PortalLoc.y += 2;
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m_PortalLoc.z += 1;
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}
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// Put the entity near the opening
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Vector3d Position = m_PortalLoc;
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if (m_Dir == Direction::Y)
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{
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Position.x += OutOffset;
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Position.z += AcrossOffset;
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}
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else if (m_Dir == Direction::X)
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{
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Position.x += AcrossOffset;
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Position.z += OutOffset;
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}
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LOGD("Placing player at {%f, %f, %f}", Position.x, Position.y, Position.z);
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m_Entity->ScheduleMoveToWorld(m_World, Position, true);
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delete this;
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}
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