Blink's Beginners Caveats - GameCreators Forum

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blink0k

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Posted: 17th Dec 2015 04:42 Edited at: 11th Jan 2016 23:02

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These are the things i've found as i have ported a basic game to AppGameKit (PC & Android)

1) Android file names are case sensitive

2) GetFirstFolder()/GetNextFolder() Do NOT work on android.

3) To publish on google play you need a keystore. You can generate one here https://developer.thegamecreators.com/android/create_keystore.php or through the AppGameKit IDE Tools/Android/Generate Keystore file

4) When exporting an .APK file the Package name should be in the format com.company.product

5) Excellent example of a texture atlas here https://forum.thegamecreators.com/thread/216038

6) Arrays are defined and .length is set/reported one less than the physical length. So the value specified in Dim and returned by length is actually the last element from zero, not the physical count

As i find/remember other things i'll add them here. If anyone else finds something that has cost them time in the beginning feel free to add it here

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BatVink

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Posted: 17th Dec 2015 08:38

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Quote: "2) GetFirstFolder()/GetNextFolder() Do NOT work on android.

3) SetFolder(/media")/GetFirstFile()/GetNextFile() Do work on android"

They work here for me. I just compiled and ran a program of mine in 2.0.15d, here is the snippet...

+ Code Snippet

        setFolder("themes")
        txt$ = getFirstFolder()
        gBingo.themeCount = 0
        while txt$ <> ""
            gBingo.themeCount = gBingo.themeCount + 1
            arrThemes[gBingo.themeCount] = txt$
            txt$ = getNextFolder()
        endwhile

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Quidquid latine dictum sit, altum sonatur
TutCity is being rebuilt

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BatVink

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Posted: 17th Dec 2015 08:48 Edited at: 17th Dec 2015 08:53

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Quote: "6) The .sort() method for arrays does NOT include element 0 (ie. array[0] is not included in the sort)"

Sorting arrays does include element 0, try this code:

+ Code Snippet

setVirtualResolution(1024,768)
   
global myArray as integer[10] = [10,8,6,4,2,1,3,5,7,9,11]

while GetRawKeyPressed(32) = 0
	for n = 0 to 10
		print (str(myArray[n]))
	next n
	Print("")
	Print("Press spacebar to sort")
	sync()
endwhile


while GetRawKeyReleased(32) = 0
	sync()
endwhile

myArray.sort()

while GetRawKeyPressed(32) = 0
	for n = 0 to 10
		print (str(myArray[n]))
	next n
	Print("")
	Print("Press spacebar to exit")
	sync()
endwhile

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Quidquid latine dictum sit, altum sonatur
TutCity is being rebuilt

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blink0k

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Posted: 17th Dec 2015 19:15 Edited at: 17th Dec 2015 19:16

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maybe it's just string array's then

+ Code Snippet


// set window properties
SetWindowTitle( "sort" )
SetWindowSize( 1024, 768, 0 )

// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )

dim m$[7] = [ "1", "7", "3", "4", "2", "5", "6" ]

clearscreen()

for i=0 to m$.length - 1
	print(str(i)+".["+m$[i]+"]")
next


print("sorting...")
m$.sort()

for i=0 to m$.length - 1
	print(str(i)+".["+m$[i]+"]")
next

sync()

do
    
loop

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blink0k

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Posted: 17th Dec 2015 19:38

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I just tried this on my samsung galaxy tablet and it didn't work. the IDE reports version (Built on Geany 1.24.1). My product download link said 2.0.16

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BatVink

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Posted: 17th Dec 2015 19:45

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I have highlighted the errors with "XXX" and replaced the code.

The basic error is that an array[7] has 8 elements (0 - 7)
You haven't added a value to the last element, but have not printed it either so you can't see the mistake
Then you sort and the blank element shuffles to the top
Then you print again with the empty element at the top, and the last element omitted from the print (8)

+ Code Snippet

// set window properties
SetWindowTitle( "sort" )
SetWindowSize( 1024, 768, 0 )
 
// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )
 
// XXX dim m$[7] = [ "1", "7", "3", "4", "2", "5", "6" ]
global m$ as string[7] = [ "1", "7", "3", "4", "2", "5", "6" , "8"]
 
clearscreen()
 
// XXX for i=0 to m$.length - 1
for i=0 to m$.length
    print(str(i)+".["+m$[i]+"]")
next
 
 
print("sorting...")
m$.sort()
 
// XXX for i=0 to m$.length - 1
for i=0 to m$.length
    print(str(i)+".["+m$[i]+"]")
next
 
sync()
 
do
     
loop

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Quidquid latine dictum sit, altum sonatur
TutCity is being rebuilt

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blink0k

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Posted: 17th Dec 2015 20:02 Edited at: 17th Dec 2015 20:09

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oh i see. how stoopid of me. thank you for your help

so the dim[value] and .length set/return one less than are in the array is that right?

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BatVink

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Posted: 17th Dec 2015 20:55

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[value] and length are the index of the last element. But because element 0 exists, the real length is one more.

Unless I really need it, I ignore element zero and work from element 1. It is much easier to avoid errors this way.

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Quidquid latine dictum sit, altum sonatur
TutCity is being rebuilt

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blink0k

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Posted: 17th Dec 2015 21:01

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yeah i see it now. it was even covered in the doco. i should have read more carefully. i see how it fits in the language better too

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