diff options
Diffstat (limited to 'source/cChunk.inl.h')
| -rw-r--r-- | source/cChunk.inl.h | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/source/cChunk.inl.h b/source/cChunk.inl.h new file mode 100644 index 000000000..c47061784 --- /dev/null +++ b/source/cChunk.inl.h @@ -0,0 +1,118 @@ +#ifndef __C_CHUNK_INL_H__
+#define __C_CHUNK_INL_H__
+
+#ifndef MAX
+# define MAX(a,b) (((a)>(b))?(a):(b))
+#endif
+
+__C_CHUNK_INLINE__
+char cChunk::GetLight(char* a_Buffer, int a_BlockIdx)
+{
+ if( a_BlockIdx > -1 && a_BlockIdx < c_NumBlocks )
+ {
+ const int cindex = (a_BlockIdx/2);
+ if( (a_BlockIdx & 1) == 0 )
+ { // First half byte
+ return (a_Buffer[cindex] & 0x0f);
+ }
+ else
+ {
+ return ((a_Buffer[cindex] & 0xf0) >> 4);
+ }
+ }
+ return 0;
+}
+
+__C_CHUNK_INLINE__
+char cChunk::GetLight(char* a_Buffer, int x, int y, int z)
+{
+ if( x < 16 && x > -1 && y < 128 && y > -1 && z < 16 && z > -1 )
+ {
+ const int cindex = (y/2) + (z * 64) + (x * 64 * 16);
+ if( (y & 1) == 0 )
+ { // First half byte
+ return (a_Buffer[cindex] & 0x0f);
+ }
+ else
+ {
+ return ((a_Buffer[cindex] & 0xf0) >> 4);
+ }
+ }
+ return 0;
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SetLight(char* a_Buffer, int a_BlockIdx, char a_Light)
+{
+ if( a_BlockIdx > -1 && a_BlockIdx < c_NumBlocks )
+ {
+ const int cindex = (a_BlockIdx/2);
+ if( (a_BlockIdx & 1) == 0 )
+ { // First half byte
+ a_Buffer[cindex] &= 0xf0; // Set first half to 0
+ a_Buffer[cindex] |= (a_Light) & 0x0f;
+ }
+ else
+ {
+ a_Buffer[cindex] &= 0x0f; // Set second half to 0
+ a_Buffer[cindex] |= (a_Light << 4) & 0xf0;
+ }
+ }
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SetLight(char* a_Buffer, int x, int y, int z, char light)
+{
+ if( x < 16 && x > -1 && y < 128 && y > -1 && z < 16 && z > -1 )
+ {
+ int cindex = (y/2) + (z * 64) + (x * 64 * 16);
+ if( (y & 1) == 0 )
+ { // First half byte
+ a_Buffer[cindex] &= 0xf0; // Set first half to 0
+ a_Buffer[cindex] |= (light) & 0x0f;
+ }
+ else
+ {
+ a_Buffer[cindex] &= 0x0f; // Set second half to 0
+ a_Buffer[cindex] |= (light << 4) & 0xf0;
+ }
+ }
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SpreadLightOfBlock(char* a_LightBuffer, int a_X, int a_Y, int a_Z, char a_Falloff)
+{
+ unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
+ SetLight( a_LightBuffer, a_X-1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X-1, a_Y, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
+ SetLight( a_LightBuffer, a_X+1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X+1, a_Y, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
+ SetLight( a_LightBuffer, a_X, a_Y-1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y-1, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
+ SetLight( a_LightBuffer, a_X, a_Y+1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y+1, a_Z ), MAX(0,CurrentLight-a_Falloff) ) );
+ SetLight( a_LightBuffer, a_X, a_Y, a_Z-1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z-1 ), MAX(0,CurrentLight-a_Falloff) ) );
+ SetLight( a_LightBuffer, a_X, a_Y, a_Z+1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z+1 ), MAX(0,CurrentLight-a_Falloff) ) );
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SpreadLightOfBlockX(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
+{
+ unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
+ SetLight( a_LightBuffer, a_X-1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X-1, a_Y, a_Z ), CurrentLight-1) );
+ SetLight( a_LightBuffer, a_X+1, a_Y, a_Z, MAX(GetLight( a_LightBuffer, a_X+1, a_Y, a_Z ), CurrentLight-1) );
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SpreadLightOfBlockY(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
+{
+ unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
+ SetLight( a_LightBuffer, a_X, a_Y-1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y-1, a_Z ), CurrentLight-1) );
+ SetLight( a_LightBuffer, a_X, a_Y+1, a_Z, MAX(GetLight( a_LightBuffer, a_X, a_Y+1, a_Z ), CurrentLight-1) );
+}
+
+__C_CHUNK_INLINE__
+void cChunk::SpreadLightOfBlockZ(char* a_LightBuffer, int a_X, int a_Y, int a_Z)
+{
+ unsigned char CurrentLight = GetLight( a_LightBuffer, a_X, a_Y, a_Z );
+ SetLight( a_LightBuffer, a_X, a_Y, a_Z-1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z-1 ), CurrentLight-1) );
+ SetLight( a_LightBuffer, a_X, a_Y, a_Z+1, MAX(GetLight( a_LightBuffer, a_X, a_Y, a_Z+1 ), CurrentLight-1) );
+}
+
+#endif
\ No newline at end of file |