func (rw *RegionWrapper) renderTile(chunk *mcmap.Chunk) (maptile, biotile *gdk.Pixmap, biocache []mcmap.Biome) {
maptile = emptyPixmap(tileSize, tileSize, 24)
mtDrawable := maptile.GetDrawable()
mtGC := gdk.NewGC(mtDrawable)
biotile = emptyPixmap(tileSize, tileSize, 24)
btDrawable := biotile.GetDrawable()
btGC := gdk.NewGC(btDrawable)
biocache = make([]mcmap.Biome, mcmap.ChunkRectXZ)
i := 0
for z := 0; z < mcmap.ChunkSizeXZ; z++ {
scanX:
for x := 0; x < mcmap.ChunkSizeXZ; x++ {
bio := chunk.Biome(x, z)
btGC.SetRgbFgColor(rw.bioLookup.Color(bio))
btDrawable.DrawRectangle(btGC, true, x*zoom, z*zoom, zoom, zoom)
biocache[i] = bio
i++
for y := chunk.Height(x, z); y >= 0; y-- {
if col, ok := blockColors[chunk.Block(x, y, z).ID]; ok {
mtGC.SetRgbFgColor(col)
mtDrawable.DrawRectangle(mtGC, true, x*zoom, z*zoom, zoom, zoom)
continue scanX
}
}
mtGC.SetRgbFgColor(gdk.NewColor("#ffffff"))
mtDrawable.DrawRectangle(mtGC, true, x*zoom, z*zoom, zoom, zoom)
}
}
return
}
func (rw *RegionWrapper) fixWeather(bio mcmap.Biome, bx, bz int, chunk *mcmap.Chunk) (newcol *gdk.Color) {
snowLine := rw.bioLookup.SnowLine(bio)
for y := mcmap.ChunkSizeY; y >= 0; y-- {
blk := chunk.Block(bx, y, bz)
if blk.ID == mcmap.BlkAir {
continue
}
if y >= snowLine {
// Freeze water and cover blocks with snow
if (blk.ID == mcmap.BlkStationaryWater) || (blk.ID == mcmap.BlkWater) {
blk.ID = mcmap.BlkIce
newcol = blockColors[mcmap.BlkIce]
} else if blockCanSnowIn[blk.ID] {
if yFix := y + 1; yFix < mcmap.ChunkSizeY {
blkFix := chunk.Block(bx, yFix, bz)
blkFix.ID = mcmap.BlkSnow
blkFix.Data = 0x0
newcol = blockColors[mcmap.BlkSnow]
}
}
} else {
// Melt ice and remove snow cover
if blk.ID == mcmap.BlkIce {
blk.ID = mcmap.BlkStationaryWater
blk.Data = 0x0
newcol = blockColors[mcmap.BlkStationaryWater]
} else if blk.ID == mcmap.BlkSnow {
blk.ID = mcmap.BlkAir
for y2 := y - 1; y2 >= 0; y2-- {
if col, ok := blockColors[chunk.Block(bx, y2, bz).ID]; ok {
newcol = col
break
}
}
}
}
break
}
return
}