Centering Images Perfectly

[darkroom]

So I have an image that needs to change in scale but stay perfectly in the center my first thought of this would be:

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self.x = math.floor(love.graphics.getWidth()/2) - math.floor(image:getWidth()/2)

but that doesn't look centered and it doesn't take into account scaling. Thank you for your time .love below

[Sheepolution]

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love.graphics.draw(image,x-position,y-position,rotation,xscale,yscale,width,height)

So let's say you have a screen of 200 by 200, and you want to put it in the center:

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img = love.graphics.newImage("image")
x = 100
y = 100
w = img:getWidth()/2
h = img:getHeight()/2

love.graphics.draw(img,x,y,0,1,1,w,h)

This way it's drawn in the center of the screen.

[darkroom]

how do you change the scale then?
Edit: Nevermind but new problem now the fish isn't in sync with the camera am i doing something wrong with the camera? New code below.

[Sheepolution]

I have no idea what you want to achieve. Can you explain?

[vitaminx]

what about using the offset? when image is scaled, it stays centered.

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function player.load(self,image)                   
    self.x = love.graphics.getWidth()/2
    self.y = love.graphics.getHeight()/2
    self.xscale = 1 
    self.yscale = 1 
[...]                      
end                                                
                                                   
function player:draw()                             
    love.graphics.rectangle("fill",100,100,110,110)
    love.graphics.draw(self.image,self.x,self.y,0,self.xscale,self.yscale,self.image:getWidth()/2,self.image:getHeight()/2)
end

I've updated your boundary checks too, see attached love archive.

greets,
vitaminx