diff options
Diffstat (limited to 'BiomeVisualiser/BiomeRenderer.cpp')
| -rw-r--r-- | BiomeVisualiser/BiomeRenderer.cpp | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/BiomeVisualiser/BiomeRenderer.cpp b/BiomeVisualiser/BiomeRenderer.cpp new file mode 100644 index 000000000..00d6d684d --- /dev/null +++ b/BiomeVisualiser/BiomeRenderer.cpp @@ -0,0 +1,147 @@ +
+// BiomeRenderer.cpp
+
+// Implements the cBiomeRenderer class representing the rendering engine
+
+#include "Globals.h"
+#include "BiomeRenderer.h"
+#include "Pixmap.h"
+#include "Timer.h"
+
+
+
+
+
+cBiomeRenderer::cBiomeRenderer(void) :
+ m_OriginX(160),
+ m_OriginY(160),
+ m_Zoom(1)
+{
+}
+
+
+
+
+void cBiomeRenderer::SetSource(cBiomeSource * a_Source)
+{
+ m_Cache.SetSource(a_Source);
+}
+
+
+
+
+
+bool cBiomeRenderer::Render(cPixmap & a_Pixmap)
+{
+ cTimer Timer("cBiomeRenderer::Render");
+
+ int Wid = a_Pixmap.GetWidth();
+ int Hei = a_Pixmap.GetHeight();
+
+ // Hint the approximate view area to the biome source so that it can adjust its caches:
+ int MinBlockX = ( - m_OriginX) / m_Zoom;
+ int MaxBlockX = (Wid - m_OriginX) / m_Zoom;
+ int MinBlockZ = ( - m_OriginY) / m_Zoom;
+ int MaxBlockZ = (Hei - m_OriginY) / m_Zoom;
+ m_Cache.HintViewArea(MinBlockX / 16 - 1, MaxBlockX / 16 + 1, MinBlockZ / 16 - 1, MaxBlockZ / 16 + 1);
+
+ // Hold one current chunk of biome data:
+ int CurChunkX = MAXINT32;
+ int CurChunkZ = MAXINT32;
+ cChunkDef::BiomeMap CurBiomes;
+
+ bool res = false;
+
+ for (int y = 0; y < Hei; y++)
+ {
+ int BlockZ = (y - m_OriginY) / m_Zoom;
+ int ChunkZ = (BlockZ >= 0) ? (BlockZ / 16) : ((BlockZ + 1) / 16 - 1);
+ int RelZ = BlockZ - ChunkZ * 16;
+ for (int x = 0; x < Wid; x++)
+ {
+ int BlockX = (x - m_OriginX) / m_Zoom;
+ int ChunkX = (BlockX >= 0) ? (BlockX / 16) : ((BlockX + 1) / 16 - 1);
+ int RelX = BlockX - ChunkX * 16;
+ if ((ChunkZ != CurChunkZ) || (ChunkX != CurChunkX))
+ {
+ CurChunkX = ChunkX;
+ CurChunkZ = ChunkZ;
+ switch (m_Cache.GetBiome(CurChunkX, CurChunkZ, CurBiomes))
+ {
+ case cBiomeSource::baLater:
+ {
+ res = true;
+ // fallthrough:
+ }
+ case cBiomeSource::baNever:
+ {
+ for (int i = 0; i < ARRAYCOUNT(CurBiomes); i++)
+ {
+ CurBiomes[i] = (EMCSBiome)-1;
+ }
+ break;
+ }
+ } // switch (Biome availability)
+ }
+ EMCSBiome Biome = cChunkDef::GetBiome(CurBiomes, RelX, RelZ);
+ a_Pixmap.SetPixel(x, y, GetBiomeColor(Biome));
+ } // for x
+ } // for y
+ return res;
+}
+
+
+
+
+
+int cBiomeRenderer::GetBiomeColor(EMCSBiome a_Biome)
+{
+ if ((a_Biome < 0) || (a_Biome > biMaxBiome))
+ {
+ return 0xcfcfcf; // LtGray for unknown biomes
+ }
+
+ static int BiomeColor[] =
+ {
+ // RGB:
+ 0x0000ff, /* Ocean */
+ 0x00cf3f, /* Plains */
+ 0xffff00, /* Desert */
+ 0x7f7f7f, /* Extreme Hills */
+ 0x00cf00, /* Forest */
+ 0x007f3f, /* Taiga */
+ 0x3f7f00, /* Swampland */
+ 0x003fff, /* River */
+ 0x7f0000, /* Hell */
+ 0x007fff, /* Sky */
+ 0x3f3fff, /* Frozen Ocean */
+ 0x3f3fff, /* Frozen River */
+ 0x7fffcf, /* Ice Plains */
+ 0x3fcf7f, /* Ice Mountains */
+ 0xcf00cf, /* Mushroom Island */
+ 0x7f00ff, /* Mushroom Island Shore */
+ 0xffff3f, /* Beach */
+ 0xcfcf00, /* Desert Hills */
+ 0x00cf3f, /* Forest Hills */
+ 0x006f1f, /* Taiga Hills */
+ 0x7f8f7f, /* Extreme Hills Edge */
+ 0x004f00, /* Jungle */
+ 0x003f00, /* Jungle Hills */
+ } ;
+
+ return BiomeColor[a_Biome];
+}
+
+
+
+
+
+void cBiomeRenderer::MoveViewBy(int a_OffsX, int a_OffsY)
+{
+ m_OriginX += a_OffsX;
+ m_OriginY += a_OffsY;
+}
+
+
+
+
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