File Reading Problem

BlitzMax Forums/BlitzMax Beginners Area/File Reading Problem

Mental Image

(Posted 2006) [#1]

I have a file full of map data stored as bytes. I am trying to read it into a pre-defined array using this code:

	file=OpenStream("level1.dat") 
	If Not file RuntimeError "failed to open level1.dat file"
	databyte=0
	For x=0 To 170
		For y=0 To 12
			MapData[databyte]=ReadByte file
			databyte:+1
		Next
	Next
	
	CloseStream file

but get the following error:

"Compile Error
Unable to convert from 'Int(Tstream)' to 'Int'

Please help before I chuck the computer into the river..

FlameDuck

(Posted 2006) [#2]

That'll be ReadByte(file)

Unable to convert from 'Int(Tstream)' to 'Int'

This almost always means you've forgotten a set of () somewhere.

degac

(Posted 2006) [#3]

You missed

MapData[databyte]=ReadByte(file)

of course before


mapdata:int[170*13]

byez

tonyg

(Posted 2006) [#4]

It would suggest your array is set-up as int.
Your readbyte command is also wrong...

Local mapdata:Byte[]
	file:TStream=OpenStream("level1.dat") 
	If Not file RuntimeError "failed to open level1.dat file"
	databyte=0
	For x=0 To 170
		For y=0 To 12
			MapData[databyte]=ReadByte(file)
			databyte:+1
		Next
	Next
	
	CloseStream file

I also changed file=openstream so file was TStream

Perturbatio

(Posted 2006) [#5]

.

I forgot I had this page open for a while. :)

Mental Image

(Posted 2006) [#6]

Thanks all...........

Mental Image

(Posted 2006) [#7]

On a further subject, if I use this in a function, can I re-declare the size of the array based on the filesize of the particular file I want to load? Basically, I want to call the function usingthe pathname of the level data, and then set up my array based on the file size.

tonyg

(Posted 2006) [#8]

You can either redeclare or dynmiacally increase/decrease the size of the array (slices).

Dreamora

(Posted 2006) [#9]

You better declare the stream as file:TStream instead of int handle, thats faster (this holds for all objects where you can choose to use it)