Bitmap Flip

[Dark Sky 20]

Hey guys, is there any way to flip a bitmap horizontally in RGSS3? I know we can use a Sprite to flip it.

Edited September 3, 2016 by Dark Sky

[Rikifive 3,411]

I have moved this thread to 'Ruby School For Thought' as it's not a script request, but a question related to scripting. (=

 

Yes, you can - just use this:

@sprite.mirror = true

~ in the initialization method (of the sprite, that is) or somewhere else to flip the sprite's bitmap horizontally.

 

Example:

def create_sprite
  @sprite = Sprite.new
  @sprite.bitmap = Cache.system("GRAPHICS YAY!")
  @sprite.x = 255
  @sprite.y = 115
  @sprite.mirror = true
end

[Dark Sky 20]

 

I have moved this thread to 'Ruby School For Thought' as it's not a script request, but a question related to scripting. (=

 

Yes, you can - just use this:

@sprite.mirror = true

~ in the initialization method (of the sprite, that is) or somewhere else to flip the sprite's bitmap horizontally.

 

Example:

def create_sprite
  @sprite = Sprite.new
  @sprite.bitmap = Cache.system("GRAPHICS YAY!")
  @sprite.x = 255
  @sprite.y = 115
  @sprite.mirror = true
end

Aw thank you for fast replying. But i need a way that we don't have to use Sprite xD

[Rikifive 3,411]

Ooh, sorry I've misread ~ now I see, that you clearly stated, that you know about that with sprites, my bad.

 

But now I'm wondering, what exactly are you trying to do?

Draw bitmaps in windows?

[Dark Sky 20]

Ooh, sorry I've misread ~ now I see, that you clearly stated, that you know about that with sprites, my bad.

 

But now I'm wondering, what exactly are you trying to do?

Draw bitmaps in windows?

I want a function that we can use to flip a bitmap. So I can use "blt" to transfer it to another bitmap.

Sorry, i'm still very bad at English. =)

[Rikifive 3,411]

And mirroring there doesn't work? =P

 

Could you show your piece of code where you want to mirror that bitmap? x3

[Dark Sky 20]

And mirroring there doesn't work? =P

 

Could you show your piece of code where you want to mirror that bitmap? x3

It works but i don't want to use too much Sprite cause i have to update all of it for every frame. It causes lag.

Yeah.

  @layer1 = Sprite.new
  @layer1.bitmap = Bitmap.new(640,480)
  
  @temp_bitmap = Cache.system("Graphic") #Need to flip this bitmap
  @temp_bitmap.flip! #This is the function I want
  @layer1.bitmap.blt(32*5,32*6,@temp_bitmap,@temp_bitmap.rect)

[Rikifive 3,411]

Oh I see the problem now...

 

To be honest that's a nice question.. Now when you brought that up, I'm curious myself.

 

I was trying to look up for information on the web, but no luck.

My first guess was to recreate the mirror method from Sprite class in Bitmap class, but I have no idea.

 

Eh... Then sorry, I'm helpless... =/

[Kayzee 4,032]

You can do this by manipulating the rect to use negative width like this I think:

 

@layer1 = Sprite.new
@layer1.bitmap = Bitmap.new(640,480)

@temp_bitmap = Cache.system("Graphic") #Need to flip this bitmap
x = @temp_bitmap.rect.x+@temp_bitmap.rect.width
w = 0-@temp_bitmap.rect
fliprect = Rect.new(x, @temp_bitmap.rect.y, w, @temp_bitmap.rect.height)
@layer1.bitmap.blt(32*5,32*6,@temp_bitmap,fliprect)

I might need to experiment a bit more.

 

Edit: If you want to, I played around with adding mirror (x flip) and flip (y flip) functions to the Rect class. Try this out:

 

class Rect
  
  def mirror
    rect = self.dup
    rect.x = rect.x+rect.width
    rect.width = 0-rect.width
    return rect
  end
    
  def flip
    rect = self.dup
    rect.y = rect.y+rect.height
    rect.height = 0-rect.height
    return rect
  end
  
end

Then you can just do this:

 

@layer1 = Sprite.new
@layer1.bitmap = Bitmap.new(640,480)

@temp_bitmap = Cache.system("Graphic") #Need to flip this bitmap
@layer1.bitmap.blt(32*5,32*6,@temp_bitmap,@temp_bitmap.rect.mirror)

Edited September 4, 2016 by KilloZapit

[Dark Sky 20]

Wow, it works really nice. Thank you. I thought we can't use negative width.

[Kayzee 4,032]

Hehe, I wasn't sure until I tried it myself, but I had a feeling it might work, I think I used it before... anyway good luck!

 

*Sprinkles fairy dust on you*

Edited September 4, 2016 by KilloZapit

[Rikifive 3,411]

Nice~!
 
This thread is closed, due to being solved. If for some reason anybody would like to re-open this thread, just send me a PM or report the thread. (=