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Fix: LibGDX-Atlas-Loader + implements offsets #45

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Fix: LibGDX-Atlas-Loader + implements offsets #45

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23dbf26
Fix: LibGDX-Atlas-Loader + implements offsets
GWRon Mar 16, 2015
735ceab
Adjusted comments in changes to LibGDXAtlasLoader
GWRon Mar 18, 2015
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286 changes: 205 additions & 81 deletions src/diddy/framework.monkey
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Original file line number Diff line number Diff line change
Expand Up @@ -1096,95 +1096,219 @@ Class ImageBank Extends StringMap<GameImage>
End

Method LoadLibGdxAtlas:Void(fileName:String, midHandle:Bool=True, readPixels:Bool = False, maskRed:Int = 0, maskGreen:Int = 0, maskBlue:Int = 0)
'Detail:
'Instead of going straight line by line and assuming a specific
'order we need to loop through every entry and store all values
'we are interested in.
'If a new entry starts (or file ends) the current entry is tried
'to get loaded.
'
'Header is processed before entries.
'To avoid problems with empty lines, they get stripped before.


Local str:String = LoadAtlasString(fileName)
Local all:String[] = str.Split("~n")
Local spriteFileName:String = all[0].Trim()
Local pointer:Image = LoadImage(path + spriteFileName)
AssertNotNull(pointer, "Error loading bitmap atlas "+ path + spriteFileName)
Local atlasGameImageName:String = SaveAtlasToBank(pointer, fileName)

Local line:String = ""
Local i:Int = 4
Local xy:String[] =["",""]
Local raw:String[] = str.Split("~n")
'skip empty files
If raw.Length() = 0 Then Return

'=== PREPARE FILE CONTENT ===
'remove empty lines
'doing it this way saves array modifications on a per-line-base
'We also trim the cleaned lines (although properties are
'intended by double space " ")
Local emptyLines:Int = 0
For Local s:String = Eachin raw
If s.Trim() = "" Then emptyLines += 1
Next

Local lines:String[ raw.Length() - emptyLines ]
emptyLines = 0
For Local index:Int = 0 Until raw.Length()
If raw[index].Trim() = "" Then emptyLines += 1;Continue
lines[ index - emptyLines ] = raw[ index ].Trim()
Next
'now "lines" contains only non-empty content


'=== LOAD FROM CONTENT ===
Local atlasImage:Image
Local atlasGameImageName:String
Local spriteFileName:String
Local spriteSize:Int[2]
Local spriteFormat:String
Local spriteFilter:String
Local spriteRepeat:String

Local entryName:String
Local entryRotate:Bool
Local entryXY:Int[2]
Local entrySize:Int[2]
Local entryOrig:Int[2]
Local entryOffset:Int[2]
Local entryIndex:Int

Local debug:Bool = False
While True
' name of the image
line = all[i].Trim()
If debug Then Print "name = "+line
If line = "" Then Exit
Local name:String = line
'rotate
i+=1
line = all[i].Trim()
If debug Then Print "rotate = "+line
Local rotate:String = line
' x and y
i+=1
line = all[i].Trim()
If debug Then Print "x and y = "+line
xy = line[ (line.FindLast(":")+1)..].Split(",")
Local x:Int = Int(xy[0].Trim())
Local y:Int = Int(xy[1].Trim())
' width and height
i+=1
line = all[i].Trim()
If debug Then Print "width and height = "+line
xy = line[ (line.FindLast(":")+1)..].Split(",")
Local width:Int = Int(xy[0].Trim())
Local height:Int = Int(xy[1].Trim())
' origX and origY
i+=1
line = all[i].Trim()
If debug Then Print "origX and origY = "+line
xy = line[ (line.FindLast(":")+1)..].Split(",")
Local origX:Int = Int(xy[0].Trim())
Local origY:Int = Int(xy[1].Trim())
' offsets
i+=1
line = all[i].Trim()
If debug Then Print "offsets = "+line
xy = line[ (line.FindLast(":")+1)..].Split(",")
Local offsetX:Int = Int(xy[0].Trim())
Local offsetY:Int = Int(xy[1].Trim())
'index
i+=1
line = all[i].Trim()
If debug Then Print "index = "+line
Local index:Int = Int(line[ (line.FindLast(":") + 1) ..].Trim())
i+=1
Local gi:GameImage = New GameImage
If index > - 1
name += index

Local configName:String, configValues:String[]
Local newConfigGroup:Bool = True, nextLineEndsConfigGroup:Bool = False
Local headerLoaded:Bool = False

For Local i:Int = 0 Until lines.Length()
'prepare names and values
If lines[i].Find(":") > 0
configName = lines[i][.. lines[i].FindLast(":")]
configValues = lines[i][ (lines[i].FindLast(":")+1)..].Split(",")
For Local j:Int = 0 Until configValues.Length()
configValues[j] = configValues[j].Trim()
Next
newConfigGroup = False
Else
configName = lines[i]
newConfigGroup = True
End
If debug
Print "name = " + name
Print "x = " + x
Print "y = " + y
Print "width = " + width
Print "height = " + height
Print "origX = " + origX
Print "origY = " + origY
Print "offsetX = " + offsetX
Print "offsetY = " + offsetY
Print "index = " + index
'last line ends current group
If i + 1 >= lines.Length()
nextLineEndsConfigGroup = True
'current group ends because new group starts then
Elseif lines[i + 1].Find(":") <= 0
nextLineEndsConfigGroup = True
Else
nextLineEndsConfigGroup = False
End

gi.name = name.ToUpper()
gi.image = pointer.GrabImage(x, y, width, height)
gi.CalcSize()
gi.MidHandle(midHandle)
'assign them according to their type
'1) name
If newConfigGroup
'first group is the header / sprite filename
If spriteFileName = ""
spriteFileName = configName
'other groups are entries
Else
entryName = configName

'reset previously set values
entryRotate = False
entryXY[0] = 0; entryXY[1] = 0
entrySize[0] = 0; entrySize[1] = 0
entryOrig[0] = 0; entryOrig[1] = 0
entryOffset[0] = 0; entryOffset[1] = 0
entryIndex = -1
End

'2) other fields
Else
'header
If Not headerLoaded
Select configName.ToLower()
Case "size"
If configValues.Length() > 1
spriteSize[0] = Int(configValues[0])
spriteSize[1] = Int(configValues[1])
End
Case "format"
spriteFormat = configValues[0]
Case "filter"
spriteFilter = configValues[0]
Case "repeat"
spriteRepeat = configValues[0]
End
'entries
Else
Select configName.ToLower()
Case "rotate"
entryRotate = (configValues[0].ToLower() = "false")
Case "xy"
entryXY[0] = Int(configValues[0])
entryXY[1] = Int(configValues[1])
Case "size"
entrySize[0] = Int(configValues[0])
entrySize[1] = Int(configValues[1])
Case "orig"
entryOrig[0] = Int(configValues[0])
entryOrig[1] = Int(configValues[1])
Case "offset"
entryOffset[0] = Int(configValues[0])
entryOffset[1] = Int(configValues[1])
Case "index"
entryIndex = Int(configValues[0])
End
End
End

gi.atlasName = atlasGameImageName
gi.subX = x
gi.subY = y
gi.readPixels = readPixels
gi.SetMaskColor(maskRed, maskGreen, maskBlue)

Self.Set(gi.name, gi)
Wend
'=== ACTUALLY LOAD/GENERATE THINGS ===
If nextLineEndsConfigGroup
'load atlas first
If Not headerLoaded
If debug Then Print "load atlas: "+spriteFileName
Assert(spriteFileName <> "", "Error loading atlas: no atlas sprite file defined.")

End

atlasImage = LoadImage(path + spriteFileName)
AssertNotNull(atlasImage, "Error loading bitmap atlas ~q"+ path + spriteFileName+"~q.")

atlasGameImageName = SaveAtlasToBank(atlasImage, fileName)

headerLoaded = True
'load entries
Else
Assert(entryName <> "", "Error loading atlas entry: no entry name defined.")

'append index to name as soon as it got defined
'Detail:
' With the libgdx-spritepacker also single sprites
' get an index of "0" so all get at least an "0"
' appended. To avoid this, would have to check _in_
' _advance_ if there are other sprites configured
' for this entry.
' As we cannot do that (multiple sprite sets) it is
' the best bet to just start with "0"
If entryIndex > - 1 Then entryName += entryIndex

If debug
Print "load entry"
Print " name = " + entryName
Print " x = " + entryXY[0]
Print " y = " + entryXY[1]
Print " width = " + entrySize[0]
Print " height = " + entrySize[1]
Print " origX = " + entryOrig[0]
Print " origY = " + entryOrig[1]
Print " offsetX = " + entryOffset[0]
Print " offsetY = " + entryOffset[1]
Print " index = " + entryIndex
End


Local gi:GameImage = New GameImage
gi.name = entryName.ToUpper()
gi.image = atlasImage.GrabImage(entryXY[0], entryXY[1], entrySize[0], entrySize[1])
gi.CalcSize()
gi.MidHandle(midHandle)


'Detail:
' LibGDX values differ to others (because in LibGDX
' "0,0" is "bottom,left")
' -> "offsetX" is what was cut from "left"
' -> "offsetY" is what was cut from "bottom"
' LibGDX encodes the "left"/"top" portions in origY
' and height.
' -> offsetTop: (origY - height) + "bottom"
gi.offSetX = entryOffset[0]
gi.offSetY = (entryOrig[1] - entrySize[1]) - entryOffset[1]

gi.atlasName = atlasGameImageName
gi.subX = entryXY[0]
gi.subY = entryXY[1]
gi.readPixels = readPixels
gi.SetMaskColor(maskRed, maskGreen, maskBlue)

Self.Set(gi.name, gi)
End
End
Next
End
Method LoadJsonAtlas:Void(fileName:String, midHandle:Bool=True, readPixels:Bool = False, maskRed:Int = 0, maskGreen:Int = 0, maskBlue:Int = 0)
Local str:String = LoadAtlasString(fileName)
' parse the json
Expand Down