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cellData.py
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cellData.py
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# -*- coding: utf-8 -*-
import Image
import ImageChops
import db
import levelData
class CellData:
cellIdX = 0
cellIdY = 0
cellGroundlevel = 0
levels = None
def __init__(self, worldId, cellIdX, cellIdY, levels = None):
self.worldId = worldId
self.cellIdX = cellIdX
self.cellIdY = cellIdY
self.levels = levels
def loadFromDb(self, conn):
c = db.cellData.columns
statement = db.select([c.cellGroundlevel], (c.cellIdX == self.cellIdX) & (c.cellIdY == self.cellIdY) & (c.worldId == self.worldId))
result = conn.execute(statement)
row = result.fetchone()
result.close()
if row != None:
self.cellGroundlevel = row['cellGroundlevel']
else:
print "Could not find cell record:", self.cellIdX, self.cellIdY
def regenHeightMap(self, conn, groundlevel, sealevel):
self.cellGroundlevel = groundlevel
c = db.cellData.columns
ins = db.cellData.insert().values(worldId = self.worldId, cellIdX = self.cellIdX, cellIdY = self.cellIdY, cellGroundlevel = self.cellGroundlevel)
conn.execute(ins)
def compressLevels(self, conn):
if self.levels == None:
#need to set the image for the hightest non-air level
c = db.levelData.columns
statement = db.select([c.levelIdZ, c.air, c.baseImage], (c.cellIdX == self.cellIdX) & (c.cellIdY == self.cellIdY) & (c.worldId == self.worldId))
result = conn.execute(statement)
rows = result.fetchall()
result.close()
oldImageName = None
highest = None
if rows != None:
for row in rows:
if row['air'] < 0.99 and (highest == None or highest < row['levelIdZ']):
highest = row['levelIdZ']
oldImageName = row['baseImage']
else:
#otherwise work off of our stored levels
oldImageName = None
highest = None
for k in self.levels:
if self.levels[k].air < 0.99 and (highest == None or highest < k):
highest = k
oldImageName = self.levels[k].baseImage
if oldImageName == None:
oldImageName = 'img-src/void.png'
newImageName = "img-world-%d/zoom1-%dx-%dy.png" % (self.worldId, self.cellIdX, self.cellIdY)
#print 'new:', newImageName, 'old:', oldImageName
#not just copying because eventually we'll be doing things like merging between layers
image1 = Image.open(oldImageName)
try:
image2 = Image.open(newImageName)
except:
image2 = Image.open("img-src/void.png")
if ImageChops.difference(image1, image2).getbbox() is None:
#no change, don't need to do anything
return False
else:
#Image has been changed, save the new one
image1.save(newImageName)
return True
def zoomLevel(self,zoom):
#note: zoom will always start at 2
oldNCells = 2 ** (zoom - 2)
#open the previous zoom level image to get the image size information
try:
oldImage1 = Image.open("img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom - 1,self.cellIdX, self.cellIdY))
except:
oldImage1 = Image.open("img-src/void.png")
try:
oldImage2 = Image.open("img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom - 1,self.cellIdX + oldNCells, self.cellIdY))
except:
oldImage2 = Image.open("img-src/void.png")
try:
oldImage3 = Image.open("img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom - 1,self.cellIdX, self.cellIdY + oldNCells))
except:
oldImage3 = Image.open("img-src/void.png")
try:
oldImage4 = Image.open("img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom - 1,self.cellIdX + oldNCells, self.cellIdY + oldNCells))
except:
oldImage4 = Image.open("img-src/void.png")
xSize, ySize = oldImage1.size
newImage = Image.new('RGB', (xSize*2, ySize*2))
newImage.paste(oldImage1, (0,0))
newImage.paste(oldImage2,(xSize,0))
newImage.paste(oldImage3,(0, ySize))
newImage.paste(oldImage4, (xSize,ySize))
newImage.thumbnail((xSize,ySize))
name = "img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom,self.cellIdX, self.cellIdY)
try:
oldImage = Image.open(name)
except:
oldImage = Image.open("img-src/void.png")
oldImage = oldImage.convert('RGB')
#oldImage.save("zoom%d-%dx-%dy.old.png" % (zoom,self.cellIdX, self.cellIdY))
#newImage.save("zoom%d-%dx-%dy.new.png" % (zoom,self.cellIdX, self.cellIdY))
#print '1:', newImage.getbands(), '2:', oldImage.getbands()
if ImageChops.difference(newImage, oldImage).getbbox() is None:
#there was no change to the image, leave everything alone and return false
return False
else:
#save and return true
newImage.save("img-world-%d/zoom%d-%dx-%dy.png" % (self.worldId, zoom,self.cellIdX, self.cellIdY))
return True
def genSurface(self, conn, Sealevel, worldMaxY):
if Sealevel > self.cellGroundlevel:
z = Sealevel
else:
z = self.cellGroundlevel
level = levelData.LevelData( self.worldId, self.cellIdX, self.cellIdY, z)
level.genSurface(conn, self.cellGroundlevel, Sealevel, worldMaxY )
self.levels = {}
self.levels[z] = level