268 lines
6.1 KiB
C++
268 lines
6.1 KiB
C++
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// HeightMap.cpp
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// Implements the cHeightMap class representing a cCallback descendant that draws a B & W map of heights for the world
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#include "Globals.h"
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#include "HeightMap.h"
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static const unsigned char g_BMPHeader[] =
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{
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0x42, 0x4D, 0x36, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, 0x28, 0x00,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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} ;
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cHeightMap::cHeightMap(void) :
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m_CurrentRegionX(0),
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m_CurrentRegionZ(0),
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m_IsCurrentRegionValid(false)
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{
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}
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void cHeightMap::Finish(void)
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{
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if (m_IsCurrentRegionValid)
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{
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StartNewRegion(0, 0);
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}
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}
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bool cHeightMap::OnNewChunk(int a_ChunkX, int a_ChunkZ)
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{
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int RegionX = (a_ChunkX < 0) ? (a_ChunkX - 31) / 32 : a_ChunkX / 32;
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int RegionZ = (a_ChunkZ < 0) ? (a_ChunkZ - 31) / 32 : a_ChunkZ / 32;
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if ((RegionX != m_CurrentRegionX) || (RegionZ != m_CurrentRegionZ))
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{
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if (m_IsCurrentRegionValid)
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{
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StartNewRegion(RegionX, RegionZ);
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}
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m_CurrentRegionX = RegionX;
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m_CurrentRegionZ = RegionZ;
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}
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m_IsCurrentRegionValid = true;
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m_CurrentChunkX = a_ChunkX;
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m_CurrentChunkZ = a_ChunkZ;
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m_CurrentChunkOffX = m_CurrentChunkX - m_CurrentRegionX * 32;
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m_CurrentChunkOffZ = m_CurrentChunkZ - m_CurrentRegionZ * 32;
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memset(m_BlockTypes, 0, sizeof(m_BlockTypes));
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return false;
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}
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bool cHeightMap::OnHeightMap(const int * a_HeightMapBE)
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{
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ASSERT(m_CurrentChunkOffX >= 0);
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ASSERT(m_CurrentChunkOffX < 32);
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ASSERT(m_CurrentChunkOffZ >= 0);
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ASSERT(m_CurrentChunkOffZ < 32);
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int * BaseHeight = m_Height + m_CurrentChunkOffZ * 16 * 512 + m_CurrentChunkOffX * 16;
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for (int z = 0; z < 16; z++)
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{
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int * Row = BaseHeight + z * 512;
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for (int x = 0; x < 16; x++)
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{
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Row[x] = ntohl(a_HeightMapBE[z * 16 + x]);
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}
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} // for z
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return false; // Still want blockdata to remove trees from the heightmap
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}
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bool cHeightMap::OnSection(
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unsigned char a_Y,
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const BLOCKTYPE * a_BlockTypes,
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const NIBBLETYPE * a_BlockAdditional,
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const NIBBLETYPE * a_BlockMeta,
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const NIBBLETYPE * a_BlockLight,
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const NIBBLETYPE * a_BlockSkyLight
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)
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{
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// Copy the section data into the appropriate place in the internal buffer
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memcpy(m_BlockTypes + a_Y * 16 * 16 * 16, a_BlockTypes, 16 * 16 * 16);
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return false;
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}
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bool cHeightMap::OnSectionsFinished(void)
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{
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// Remove trees from the heightmap:
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for (int z = 0; z < 16; z++)
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{
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for (int x = 0; x < 16; x++)
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{
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for (int y = m_Height[512 * (16 * m_CurrentChunkOffZ + z) + 16 * m_CurrentChunkOffX + x]; y >= 0; y--)
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{
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if (IsGround(m_BlockTypes[256 * y + 16 * z + x]))
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{
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m_Height[512 * (16 * m_CurrentChunkOffZ + z) + 16 * m_CurrentChunkOffX + x] = y;
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break; // for y
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}
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} // for y
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} // for x
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} // for z
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return true;
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}
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void cHeightMap::StartNewRegion(int a_RegionX, int a_RegionZ)
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{
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AString FileName;
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Printf(FileName, "Height.%d.%d.bmp", m_CurrentRegionX, m_CurrentRegionZ);
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cFile f;
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if (!f.Open(FileName, cFile::fmWrite))
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{
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LOG("Cannot open file \"%s\" for writing the height map. Data for this region lost.", FileName.c_str());
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}
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else
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{
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f.Write(g_BMPHeader, sizeof(g_BMPHeader));
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for (int z = 0; z < 512; z++)
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{
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int RowData[512];
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int * HeightRow = m_Height + z * 512;
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for (int x = 0; x < 512; x++)
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{
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RowData[x] = std::max(std::min(HeightRow[x], 255), 0) * 0x010101;
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}
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f.Write(RowData, sizeof(RowData));
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} // for z
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}
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memset(m_Height, 0, sizeof(m_Height));
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m_CurrentRegionX = a_RegionX;
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m_CurrentRegionZ = a_RegionZ;
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}
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bool cHeightMap::IsGround(BLOCKTYPE a_BlockType)
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{
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// Name all blocks that are NOT ground, return false for them:
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switch (a_BlockType)
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{
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case E_BLOCK_AIR:
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case E_BLOCK_BED:
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case E_BLOCK_BEETROOTS:
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case E_BLOCK_BREWING_STAND:
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case E_BLOCK_BROWN_MUSHROOM:
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case E_BLOCK_CACTUS:
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case E_BLOCK_CAKE:
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case E_BLOCK_CARROTS:
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case E_BLOCK_CAULDRON:
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case E_BLOCK_CHEST:
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case E_BLOCK_CHORUS_FLOWER:
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case E_BLOCK_CHORUS_PLANT:
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case E_BLOCK_COBBLESTONE_WALL:
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case E_BLOCK_COBWEB:
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case E_BLOCK_COCOA_POD:
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case E_BLOCK_CROPS:
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case E_BLOCK_DEAD_BUSH:
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case E_BLOCK_DETECTOR_RAIL:
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case E_BLOCK_DIRT:
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case E_BLOCK_DRAGON_EGG:
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case E_BLOCK_END_GATEWAY:
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case E_BLOCK_END_PORTAL:
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case E_BLOCK_END_ROD:
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case E_BLOCK_ENDER_CHEST:
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case E_BLOCK_FENCE:
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case E_BLOCK_FENCE_GATE:
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case E_BLOCK_FIRE:
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case E_BLOCK_FLOWER_POT:
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case E_BLOCK_HEAD:
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case E_BLOCK_IRON_BARS:
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case E_BLOCK_LADDER:
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case E_BLOCK_LAVA:
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case E_BLOCK_LEAVES:
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case E_BLOCK_LEVER:
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case E_BLOCK_LILY_PAD:
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case E_BLOCK_LOG: // NOTE: This block is actually solid, but we don't want it because it's the thing that trees are made of, and we're getting rid of trees
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case E_BLOCK_MELON:
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case E_BLOCK_MELON_STEM:
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case E_BLOCK_NETHER_BRICK_FENCE:
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case E_BLOCK_NETHER_PORTAL:
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case E_BLOCK_POWERED_RAIL:
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case E_BLOCK_PUMPKIN:
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case E_BLOCK_PUMPKIN_STEM:
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case E_BLOCK_RAIL:
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case E_BLOCK_RED_ROSE:
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case E_BLOCK_RED_MUSHROOM:
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case E_BLOCK_REDSTONE_REPEATER_OFF:
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case E_BLOCK_REDSTONE_REPEATER_ON:
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case E_BLOCK_REDSTONE_TORCH_OFF:
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case E_BLOCK_REDSTONE_TORCH_ON:
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case E_BLOCK_REDSTONE_WIRE:
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case E_BLOCK_REEDS:
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case E_BLOCK_SAPLING:
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case E_BLOCK_SIGN_POST:
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case E_BLOCK_SNOW:
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case E_BLOCK_STATIONARY_LAVA:
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case E_BLOCK_STATIONARY_WATER:
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case E_BLOCK_STONE_BUTTON:
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case E_BLOCK_STONE_PRESSURE_PLATE:
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case E_BLOCK_STRUCTURE_VOID:
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case E_BLOCK_TALL_GRASS:
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case E_BLOCK_TORCH:
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case E_BLOCK_TRIPWIRE:
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case E_BLOCK_TRIPWIRE_HOOK:
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case E_BLOCK_VINES:
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case E_BLOCK_WALLSIGN:
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case E_BLOCK_WATER:
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case E_BLOCK_WOODEN_BUTTON:
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case E_BLOCK_WOODEN_PRESSURE_PLATE:
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case E_BLOCK_YELLOW_FLOWER:
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{
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return false;
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}
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////
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// cHeightMapFactory:
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cHeightMapFactory::~cHeightMapFactory()
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{
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// Force all threads to save their last regions:
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for (cCallbacks::iterator itr = m_Callbacks.begin(), end = m_Callbacks.end(); itr != end; ++itr)
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{
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((cHeightMap *)(*itr))->Finish();
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}
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// TODO: Join all the files into one giant image file
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}
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