Hi there!
I am doing a little game that load and print a ball (is an image). This ball is changing his coluor, from red to blue, and from blue to red. I would like to do this:
if the colour of the ball us red then
–code–
end
How can I do this in Corona SDK? I dont see any function that do this.
Goodbye 
You can save the current color as a string to your object:
ball = display.newImageRect(“ball.png”, width, height)
ball.currentColor = “blue”
later change it to red, however you’re changing it and make sure to do:
ball.currentColor = “red”
then you can just do:
if ball.currentColor == “red” then
--whatever you want to do
else
– whatever you want to do if it’s blue
end
Thank you very much, it works
Bye!!
If I’ve read the optimization thread correction, this sort of string storage/comparison should happen as an enum, correct?
Perhaps in a tight loop, it might matter. If you’re frame rate isn’t good enough, then you could look into those optimizations.
Honestly, since the iPhone 4 I’ve rarely had to go back and optimize anything, the devices are just so damn fast. But it gives me a nice feeling to do things the fastest way 
You can save the current color as a string to your object:
ball = display.newImageRect(“ball.png”, width, height)
ball.currentColor = “blue”
later change it to red, however you’re changing it and make sure to do:
ball.currentColor = “red”
then you can just do:
if ball.currentColor == “red” then
--whatever you want to do
else
– whatever you want to do if it’s blue
end
Thank you very much, it works
Bye!!
If I’ve read the optimization thread correction, this sort of string storage/comparison should happen as an enum, correct?
Perhaps in a tight loop, it might matter. If you’re frame rate isn’t good enough, then you could look into those optimizations.
Honestly, since the iPhone 4 I’ve rarely had to go back and optimize anything, the devices are just so damn fast. But it gives me a nice feeling to do things the fastest way