added newmap function to render modules (so explosions and other things are reset...

[xonotic/darkplaces.git] / fractalnoise.c

diff --git a/fractalnoise.c b/fractalnoise.c
index 93622b14e4530f6f8f8223223bd79dfeda4353b3..3425daf84dca34e94bb7881c1d1939d109176214 100644 (file)
--- a/fractalnoise.c
+++ b/fractalnoise.c
@@ -17,7 +17,7 @@ void fractalnoise(byte *noise, int size, int startgrid)
 
        startgrid = bound(0, startgrid, size);
 
-       amplitude = 32767;
+       amplitude = 0xFFFF; // this gets halved before use
        noisebuf = qmalloc(size*size*sizeof(int));
        memset(noisebuf, 0, size*size*sizeof(int));
 
@@ -55,10 +55,11 @@ void fractalnoise(byte *noise, int size, int startgrid)
                        if (n(x,y) > max) max = n(x,y);
                }
        max -= min;
+       max++;
        // normalize noise and copy to output
        for (y = 0;y < size;y++)
                for (x = 0;x < size;x++)
-                       *noise++ = (n(x,y) - min) * 255 / max;
+                       *noise++ = (byte) (((n(x,y) - min) * 256) / max);
        qfree(noisebuf);
 #undef n
 }