dynmap/MapTile.java

288 lines
6.4 KiB
Java
Raw Normal View History

2010-12-04 14:24:32 +01:00
import java.util.logging.Logger;
import java.util.logging.Level;
import java.awt.*;
import java.awt.image.*;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
public class MapTile {
protected static final Logger log = Logger.getLogger("Minecraft");
/* projection position */
public int px, py;
2010-12-08 08:18:12 +01:00
/* projection position of zoom-out tile */
public int zpx, zpy;
2010-12-04 14:24:32 +01:00
/* minecraft space origin */
public int mx, my, mz;
/* whether this tile needs to be updated */
boolean stale = false;
/* create new MapTile */
2010-12-08 08:18:12 +01:00
public MapTile(int px, int py, int zpx, int zpy)
2010-12-04 14:24:32 +01:00
{
this.px = px;
this.py = py;
2010-12-08 08:18:12 +01:00
this.zpx = zpx;
this.zpy = zpy;
2010-12-04 14:24:32 +01:00
mx = MapManager.anchorx + px / 2 + py / 2;
my = MapManager.anchory;
mz = MapManager.anchorz + px / 2 - py / 2;
}
/* get key by projection position */
public static long key(int px, int py)
{
long lpx = (long) px;
long lpy = (long) py;
return ((lpx & (long) 0xffffffffL) << 32) | (lpy & (long) 0xffffffffL);
}
/* hash value, based on projection position */
public int hashCode()
{
return (px << 16) ^ py;
}
/* equality comparison - based on projection position */
public boolean equals(MapTile o)
{
return o.px == px && o.py == py;
}
/* return a simple string representation... */
public String toString()
{
return px + "_" + py;
}
/* render this tile */
public void render(MapManager mgr)
{
mgr.debug("Rendering tile: " + this.toString());
BufferedImage im = new BufferedImage(MapManager.tileWidth, MapManager.tileHeight, BufferedImage.TYPE_INT_RGB);
WritableRaster r = im.getRaster();
int ix = mx;
int iy = my;
int iz = mz;
int jx, jz;
int x, y;
/* draw the map */
for(y=0; y<MapManager.tileHeight;) {
jx = ix;
jz = iz;
for(x=MapManager.tileWidth-1; x>=0; x-=2) {
Color c1 = scan(mgr, jx, iy, jz, 0);
Color c2 = scan(mgr, jx, iy, jz, 2);
r.setPixel(x, y, new int[] { c1.getRed(), c1.getGreen(), c1.getBlue() });
r.setPixel(x-1, y, new int[] { c2.getRed(), c2.getGreen(), c2.getBlue() });
jx++;
jz++;
}
y ++;
jx = ix;
jz = iz - 1;
for(x=MapManager.tileWidth-1; x>=0; x-=2) {
Color c1 = scan(mgr, jx, iy, jz, 2);
jx++;
jz++;
Color c2 = scan(mgr, jx, iy, jz, 0);
r.setPixel(x, y, new int[] { c1.getRed(), c1.getGreen(), c1.getBlue() });
r.setPixel(x-1, y, new int[] { c2.getRed(), c2.getGreen(), c2.getBlue() });
}
y ++;
ix ++;
iz --;
}
/* save image */
try {
String path = getPath(mgr);
File file = new File(path);
ImageIO.write(im, "png", file);
2010-12-08 08:18:12 +01:00
} catch(IOException e) {
log.log(Level.SEVERE, "Failed to save tile: " + getPath(mgr), e);
2010-12-05 22:00:52 +01:00
} catch(java.lang.NullPointerException e) {
log.log(Level.SEVERE, "Failed to save tile (NullPointerException): " + getPath(mgr), e);
2010-12-08 08:18:12 +01:00
}
/* now update zoom-out tile */
String zPath = getZoomPath(mgr);
BufferedImage zIm = mgr.zoomCache.get(zPath);
if(zIm == null) {
/* zoom-out tile doesn't exist - try to load it from disk */
mgr.debug("Trying to load zoom-out tile: " + zPath);
try {
File file = new File(zPath);
zIm = ImageIO.read(file);
} catch(IOException e) {
}
if(zIm == null) {
mgr.debug("Failed to load zoom-out tile: " + zPath);
/* create new one */
/* TODO: we might use existing tiles that we could load
* to fill the zoomed out tile in... */
zIm = new BufferedImage(MapManager.tileWidth, MapManager.tileHeight, BufferedImage.TYPE_INT_RGB);
} else {
mgr.debug("Loaded zoom-out tile from " + zPath);
}
} else {
mgr.debug("Using zoom-out tile from cache: " + zPath);
}
/* update zoom-out tile */
/* scaled size */
int scw = mgr.tileWidth / 2;
int sch = mgr.tileHeight / 2;
/* origin in zoomed-out tile */
int ox = scw;
int oy = 0;
if(zpx != px) ox = 0;
if(zpy != py) oy = sch;
/* blit scaled rendered tile onto zoom-out tile */
WritableRaster zr = zIm.getRaster();
Graphics2D g2 = zIm.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2.drawImage(im, ox, oy, scw, sch, null);
/* update zoom-out tile cache */
BufferedImage oldIm = mgr.zoomCache.put(zPath, zIm);
if(oldIm != null && oldIm != zIm) {
oldIm.flush();
}
/* save zoom-out tile */
try {
File file = new File(zPath);
ImageIO.write(zIm, "png", file);
mgr.debug("saved zoom-out tile at " + zPath);
//log.info("Saved tile: " + path);
2010-12-04 14:24:32 +01:00
} catch(IOException e) {
2010-12-08 08:18:12 +01:00
log.log(Level.SEVERE, "Failed to save zoom-out tile: " + zPath, e);
} catch(java.lang.NullPointerException e) {
log.log(Level.SEVERE, "Failed to save zoom-out tile (NullPointerException): " + zPath, e);
2010-12-04 14:24:32 +01:00
}
}
/* generate a path name for this map tile */
2010-12-08 08:18:12 +01:00
public String getPath(MapManager mgr)
2010-12-04 14:24:32 +01:00
{
return mgr.tilepath + "t_" + px + "_" + py + ".png";
}
2010-12-08 08:18:12 +01:00
/* generate a path name for the zoomed-out tile */
public String getZoomPath(MapManager mgr)
{
return mgr.tilepath + "zt_" + zpx + "_" + zpy + ".png";
}
/* try to load already generated image */
public BufferedImage loadTile(MapManager mgr)
{
try {
2010-12-08 08:20:49 +01:00
String path = getPath(mgr);
//log.info("Loading tile from " + path);
File file = new File(path);
BufferedImage im = ImageIO.read(file);
//log.info("OK");
return im;
2010-12-08 08:18:12 +01:00
} catch(IOException e) {
2010-12-08 08:20:49 +01:00
//log.info("failed: " + e.toString());
2010-12-08 08:18:12 +01:00
}
return null;
}
2010-12-04 14:24:32 +01:00
/* cast a ray into the map */
private Color scan(MapManager mgr, int x, int y, int z, int seq)
{
Server s = etc.getServer();
for(;;) {
if(y < 0)
return Color.BLUE;
int id = s.getBlockIdAt(x, y, z);
switch(seq) {
case 0:
x--;
break;
case 1:
y--;
break;
case 2:
z++;
break;
case 3:
y--;
break;
}
seq = (seq + 1) & 3;
if(id != 0) {
Color[] colors = mgr.colors.get(id);
if(colors != null) {
Color c = colors[seq];
if(c.getAlpha() > 0) {
/* we found something that isn't transparent! */
if(c.getAlpha() == 255) {
/* it's opaque - the ray ends here */
return c;
}
/* this block is transparent, so recurse */
Color bg = scan(mgr, x, y, z, seq);
int cr = c.getRed();
int cg = c.getGreen();
int cb = c.getBlue();
int ca = c.getAlpha();
cr *= ca;
cg *= ca;
cb *= ca;
int na = 255 - ca;
return new Color((bg.getRed() * na + cr) >> 8, (bg.getGreen() * na + cg) >> 8, (bg.getBlue() * na + cb) >> 8);
}
}
}
}
}
}