Sprite Animation won't animate in main loop

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Artformer

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Location: Scotland

Posted: 13th Jul 2016 18:00

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Hello,
Excuse me bothering you with this, but I seem to be missing something in my code.. I'm rebuilding a game I made in DBPro in AGK2, and I'm learning the basics of animation. I've created an atlas image of 8 rows of 5 animation images, which is two separate movements of one character, each being 5 * 4 images = 20 frames each. I can't seem to get any animation whatsoever within the main loop.. I've included the files.. can anyone see what I've done wrong please? This is my own artwork, each frame is 100 * 100
Thanks for your help.
Regards
Howard

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blink0k

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Posted: 14th Jul 2016 00:25 Edited at: 14th Jul 2016 00:26

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It seems to work ok for me. Nice animation, lots of character

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Artformer

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Posted: 14th Jul 2016 00:44

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The spritesheet has an upward and a downward moving character, and I'd like to have full control of each movement. At the moment, its just playing through 20 frames of each in a continuous loop of 40 frames.
I cannot get PlaySprite to work within the main loop either. I have modified the coding here, but still can't get it to work....

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blink0k

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Posted: 14th Jul 2016 01:16 Edited at: 14th Jul 2016 01:37

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try this;

// Project: Sprite Sheet Test 
// Created: 2016-07-13

// show all errors
SetErrorMode(2)

// set window properties
SetWindowTitle( "Sprite Sheet Test" )
SetWindowSize( 1024, 768, 0 )
adjustScreenPercentage()
// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )

global lastkey as integer
global spr as integer
global img as integer
global stfrm as integer
global endfrm as integer
spr=CreateSprite(0)
img1=LoadImage("HatrixDNUPspritesheet.png") //500*800

setspritepositionbyoffset(spr,50,50)
SetSpriteImage ( spr, img1 )
SetSpriteAnimation( spr, 800/8, 500/5, 40 )	
setspritesize(spr,-1,100)
SetSpriteOffset(spr,getspritewidth(spr)/2.0,getspriteheight(spr))
SetSpritePosition(spr,100,100)

stfrm=1
endfrm=20
lastkey=83
curfrm#=stfrm

// 
do
	GOSUB GetKeyPress
	print("Frame="+str(curfrm#))
	SetSpriteFrame(spr, trunc(curfrm#))
	inc curfrm#, 0.5
	if curfrm# > endfrm
		curfrm#=stfrm
	endif
//	PlaySprite( spr)
    Sync()
loop

GetKeyPress:
	IF GetRawKeyPressed( 83 )=1  // "W" UP 
		stfrm=21
		curfrm#=stfrm		
		endfrm=40
	ENDIF
	IF GetRawKeyPressed( 87 )=1 //"S" DOWN 
		stfrm=1
		curfrm#=stfrm
		endfrm=20	
	ENDIF		
		
RETURN

function adjustScreenPercentage()
	w as float
	h as float	
	SetDisplayAspect(w/h)
	endfunction

+ Code Snippet


// Project: Sprite Sheet Test 
// Created: 2016-07-13

// show all errors
SetErrorMode(2)

// set window properties
SetWindowTitle( "Sprite Sheet Test" )
SetWindowSize( 1024, 768, 0 )
adjustScreenPercentage()
// set display properties
SetVirtualResolution( 1024, 768 )
SetOrientationAllowed( 1, 1, 1, 1 )

global lastkey as integer
global spr as integer
global img as integer
global stfrm as integer
global endfrm as integer
spr=CreateSprite(0)
img1=LoadImage("HatrixDNUPspritesheet.png") //500*800


setspritepositionbyoffset(spr,50,50)
SetSpriteImage ( spr, img1 )
SetSpriteAnimation( spr, 800/8, 500/5, 40 )	
setspritesize(spr,-1,100)
SetSpriteOffset(spr,getspritewidth(spr)/2.0,getspriteheight(spr))
SetSpritePosition(spr,100,100)

stfrm=1
endfrm=20
lastkey=83
curfrm#=stfrm

// 
do
	GOSUB GetKeyPress
	print("Frame="+str(curfrm#))
	SetSpriteFrame(spr, trunc(curfrm#))
	inc curfrm#, 0.5
	if curfrm# > endfrm
		curfrm#=stfrm
	endif
//	PlaySprite( spr)
    Sync()
loop


GetKeyPress:
	IF GetRawKeyPressed( 83 )=1  // "W" UP 
		stfrm=21
		curfrm#=stfrm		
		endfrm=40
	ENDIF
	IF GetRawKeyPressed( 87 )=1 //"S" DOWN 
		stfrm=1
		curfrm#=stfrm
		endfrm=20	
	ENDIF		
		
RETURN

function adjustScreenPercentage()
	w as float
	h as float	
	SetDisplayAspect(w/h)
	endfunction

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Artformer

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Posted: 14th Jul 2016 10:27

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Good job BlinkOk! Apart from sprites image reversed for up/down key.. (just reversed the key assignment.. probably my error). So now I'm trying to understand what you've done here. curfrm# is a real number not Integer, which I guess is so it will track fractions of a frame, which is rounded up/down by the TRUNC function. But you are not using PLAYSPRITE, so what prints the sprite frames? Is there a limitation in the use of PLAYSPRITE that needs to be fixed, forcing people to ignore it? The animation is running way too fast, so I assume a timer has to be implemented? How can I create the same game speed on multiple platforms? Thanks for the help!

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blink0k

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Posted: 14th Jul 2016 12:13

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curfrm# is a float so you can control the speed of the animation (Change .05 to say .02 and it will slow down)
SetSpriteFrame() is what displays the frame of the animation
if you want a consistent frame rate you could use elapsed time to select the frame

before you were executing playsprite() every frame so it was always setting the animation to the first frame. you need a system where by playsprite is executed ONLY when the state changes

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Funnell7

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Location: UK, England

Posted: 14th Jul 2016 13:49 Edited at: 14th Jul 2016 13:50

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Quote: "before you were executing playsprite() every frame so it was always setting the animation to the first frame. you need a system where by playsprite is executed ONLY when the state changes"

Further to the above suggestion provided by blink0k, in its simplest form, you could do this...

if GetSpritePlaying(spr) = 0 Then PlaySprite(spr)

Using AppGameKit V2 Tier 1

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Artformer

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Posted: 14th Jul 2016 15:20

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Ah, I see... then I have to say that AGK2 documentation is incomplete, to say the least! Thanks folks!

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Newcomers AppGameKit Corner / Sprite Animation won't animate in main loop

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