Beginnner to sprites : Basic help needed
BlitzMax Forums/BlitzMax Beginners Area/Beginnner to sprites : Basic help needed
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| Hi, I have the following sprite set. Is it possible to use something like this to animate sprites using blitzmax ? THanks in advance. [img]http://www.kickoffworld.net/wiki/index.php?title=Image:Fbgraph.png[/img] |
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| Yes. LoadAnimImage:TImage(url:Object,cell_width,cell_height,first_cell,cell_count,flags=-1) And to draw it put in the frame at the end: DrawImage(image:TImage,x#,y#,frame=0) |
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| Basically you have an animstrip of what I can see of that image you posted. What you need to work out is how big each cell of the image is then load it in using the loadanimimage command. Say for instance you have an animstrip with 4 different frames (Like the image you have but yours has more frames). You use loadanimimage to load the animstrip in and define the size of each frame and to also put how many frames there are. You would do the following:
Global myimage:TImage = LoadAnimImage("where_the_image_is.png",cellWidth,CellHeight,0,NumberOF Frmaes,MASKEDIMAGE)
then when you draw it you do the following
DrawImage myimage,XPosition,YPosition,FrameNumber
framenumber:+1
if frame number > 4 then framenumber = 0
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| Thanks alot guys. I tried the following before coming back here and reading the replies. myanimation = LoadAnimImage ("ko1.png",32,32,0,5) Repeat DrawImage (myanimation,50,50,x) Flip x=+1 Until x >=5 WaitMouse My sprites are 32x32 http://www.kickoffworld.net/wiki/index.php?title=Image:Fbgraph.png |
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| Thanks for the replies.I got it working.I thought that drawimage increments the frames and outputs each one.I used a repeat loop that increments the count count until I reach the last frame. Blitz goes through the frames extremely fast, is there a way of slowing it down ? |
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This should do it:
Global x:int = 0
Global myanimation:TImage = LoadAnimImage("Ko1.png",32,32,0,5)
Repeat
Cls
DrawImage myanimation,50,50,x
x:+1
if x > 4 then x = 0
Flip
Flushmem
UntilKeyHit(KEY_ESCAPE)
Frames in the LoadAnimImage command start from 0 and go up to how many frames there actually is. So if there are 5 frames it goes from 0 to 5. DrawImage command on the other hand starts counting from 0 so 0 is a frame. So for 5 frames it would actually be 0 to 4. Hope that helps :) |
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| Blitz goes through the frames extremely fast, is there a way of slowing it down ? Yes. You have to use timers. A quick example would be :
Global FrameTimer = millisecs()
Global frame:int = 0
Global myimage:TImage = LoadAnimImage("myimage.png",32,32,0,5)
Repeat
cls
Drawimage myimage,50,50,frame
If MilliSecs() > FrameTimer + 100
FrameTimer = MilliSecs()
frame:+1
EndIf
If frame > 4 then frame = 0
Flip
Flushmem
Until KeyHit(KEY_ESCAPE)
Hope that helps. :) |
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x:+1 if x > 4 then x = 0 Remember the Mod command Amon?! Ryan |
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| Remember the Mod command Amon?! I'm going to be honest here and say I still have no clue on how to use it and when and where. :/ |
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x = (x + 1) Mod 5 We're increasing x by 1, then storing in x the remainder of this value divided by 5. That way, x can never exceed 4 as the mod function would take it back down to 0. Ryan |
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| Still dont get it. Whats MOD doing and how does it reset it to 0? You say MOD returns the remainder of the division. So if x = 2 then you divided by 5 MOD would return 1. Yes/No :confused: |
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| 1 divided by 5 is less than 1 so mod returns the remainder: 1 2 divided by 5 is less than 1 so mod would return 2 3 divided by 5 is less than 1, mod returns 3 4 divided by 5 is less than 1, mod returns 4 5 divided by 5 is 1 so mod returns the remainder, which is 0 *EDIT* a quick example: Local x = 0 While count <10 Print "X = " + X x= (X+1) Mod 5 Print "(X+1) Mod 5 = " + x count:+1 Wend |
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| Thanks Amon but your code crashes once it executes.Compiling & linking are ok though.I'm using the latest BlitzMax on Tiger :( |
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| if you run it in debug mode, do you get an error message? also, try putting strict at the top. |
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| Graphics 1280,854 was missing :( |
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| Ahh, The problem appears to be the fact that I didn't specify a graphics mode. Graphics 1280,854 'set gfx mode was missing... |
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| [snip] Oops. Forgot to add the graphics mode in my code. :/ Sorry. :) |
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| Thanks for your help both of ye. |
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| I was just about to reply with that :) although I would suggest if you're going to be releasing a game don't work with such odd resolutions. 800x600 or 1024x768 seem standard. |
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| Indeed,I'm on a beginner so no release date soon :) The native resolution of my powerbook is 1280x854 |
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