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Add shadowstrength attribute for surface renderer - enables shadows

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based on top-down chunk sky light data
This commit is contained in:
Mike Primm 2011-05-20 20:52:34 -05:00
parent 920dea04ee
commit 992a905b0a
3 changed files with 257 additions and 199 deletions
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2
configuration.txt
View File

@ -59,6 +59,8 @@ worlds:
prefix: t
maximumheight: 127
colorscheme: default
# Add shadows to world (based on top-down shadows from chunk data)
# shadowstrength: 1.0
#- class: org.dynmap.kzedmap.HighlightTileRenderer
# prefix: ht
# maximumheight: 127

19
src/main/java/org/dynmap/MapChunkCache.java
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@ -89,8 +89,8 @@ public class MapChunkCache {
Object cc = gethandle.invoke(c);
byte[] buf = new byte[32768 + 16384 + 16384 + 16384]; /* Get big enough buffer for whole chunk */
getchunkdata.invoke(cc, buf, 0, 0, 0, 16, 128, 16, 0);
snaparray[(chunk.x-x_min) + (chunk.z - z_min)*x_dim] =
new CraftChunkSnapshot(chunk.x, chunk.z, buf);
CraftChunkSnapshot ss = new CraftChunkSnapshot(chunk.x, chunk.z, buf);
snaparray[(chunk.x-x_min) + (chunk.z - z_min)*x_dim] = ss;
} catch (Exception x) {
}
}
@ -195,4 +195,19 @@ public class MapChunkCache {
return w.getHighestBlockYAt(x, z);
}
}
/* Get sky light level
*/
public int getBlockSkyLight(int x, int y, int z) {
if(snaparray != null) {
CraftChunkSnapshot ss = snaparray[((x>>4) - x_min) + ((z>>4) - z_min) * x_dim];
if(ss == null) {
return 15;
}
else
return ss.getBlockSkyLight(x & 0xF, y, z & 0xF);
}
else {
return 15;
}
}
}

45
src/main/java/org/dynmap/kzedmap/DefaultTileRenderer.java
View File

@ -29,6 +29,7 @@ public class DefaultTileRenderer implements MapTileRenderer {
protected HashSet<Integer> highlightBlocks = new HashSet<Integer>();
protected Color highlightColor = new Color(255, 0, 0);
protected int shadowscale[]; /* index=skylight level, value = 256 * scaling value */
@Override
public String getName() {
return name;
@ -42,6 +43,19 @@ public class DefaultTileRenderer implements MapTileRenderer {
if (maximumHeight > 127)
maximumHeight = 127;
}
o = configuration.get("shadowstrength");
if(o != null) {
double shadowweight = Double.parseDouble(String.valueOf(o));
if(shadowweight > 0.0) {
shadowscale = new int[16];
for(int i = 0; i < 16; i++) {
double v = 256.0 * (1.0 - (shadowweight * (15-i) / 15.0));
shadowscale[i] = (int)v;
if(shadowscale[i] > 256) shadowscale[i] = 256;
if(shadowscale[i] < 0) shadowscale[i] = 0;
}
}
}
colorScheme = ColorScheme.getScheme((String)configuration.get("colorscheme"));
}
@ -210,9 +224,14 @@ public class DefaultTileRenderer implements MapTileRenderer {
new Client.Tile(zmtile.getFilename()));
}
protected void scan(World world, int x, int y, int z, int seq, boolean isnether, final Color result,
MapChunkCache cache) {
scan(world, x, y, z, seq, isnether, result, cache, 15);
}
private void scan(World world, int x, int y, int z, int seq, boolean isnether, final Color result,
MapChunkCache cache, int lightlevel) {
int newlightlevel = 15;
result.setTransparent();
for (;;) {
if (y < 0) {
@ -234,6 +253,10 @@ public class DefaultTileRenderer implements MapTileRenderer {
if(colorScheme.datacolors[id] != null) { /* If data colored */
data = cache.getBlockData(x, y, z);
}
if(shadowscale != null) {
newlightlevel = cache.getBlockSkyLight(x, y, z); /* Remember this - light path for next block */
}
switch (seq) {
case 0:
x--;
@ -268,16 +291,25 @@ public class DefaultTileRenderer implements MapTileRenderer {
if (c.getAlpha() == 255) {
/* it's opaque - the ray ends here */
result.setColor(c);
if(lightlevel < 15) { /* Not full light? */
shadowColor(result, lightlevel);
}
return;
}
/* this block is transparent, so recurse */
scan(world, x, y, z, seq, isnether, result, cache);
scan(world, x, y, z, seq, isnether, result, cache, newlightlevel);
int cr = c.getRed();
int cg = c.getGreen();
int cb = c.getBlue();
int ca = c.getAlpha();
if(lightlevel < 15) {
int scale = shadowscale[lightlevel];
cr = (cr * scale) >> 8;
cg = (cg * scale) >> 8;
cb = (cb * scale) >> 8;
}
cr *= ca;
cg *= ca;
cb *= ca;
@ -287,6 +319,15 @@ public class DefaultTileRenderer implements MapTileRenderer {
}
}
}
lightlevel = newlightlevel; /* Advance - next block uses last block's light */
}
}
private final void shadowColor(Color c, int lightlevel) {
int scale = shadowscale[lightlevel];
if(scale == 0)
c.setRGBA(0, 0, 0, c.getAlpha());
else if(scale < 256)
c.setRGBA((c.getRed() * scale) >> 8, (c.getGreen() * scale) >> 8,
(c.getBlue() * scale) >> 8, c.getAlpha());
}
}