SOLVED: Odd results when setting a random color in code.

[josriley]

I have this code in my Start() function, and want to completely randomize clothing colors for my sprites. For some reason this line of code sets the r,g,b values of my sprite to very high numbers (4 digit numbers), based on what the inspector tells. The alpha value is set as expected.

tk2dBaseSprite sprite = GetComponent<tk2dBaseSprite>();
sprite.color =new Color(Random.Range(0,256), Random.Range(0,256),Random.Range(0,256),255);

I've also noticed that setting the values explicitly yields odd results. Setting it to (100,100,100,255) actually sets it to (40,43,112,255).

[josriley]

Actually, I read it wrong, its setting it (25500,25500,25500,255) if I set to (100,100,100,255). I'm guessing color is on a scale of 0-1?

[josriley]

Looks like that's the case, in case anyone else has this problem. This code solves the issue:

sprite.color =new Color(
     (float)Random.Range(0,1000)*.001f,
     (float)Random.Range(0,1000)*.001f,
     (float)Random.Range(0,1000)*.001f,
     255);

[unikronsoftware]

Color is in the range 0 - 1, as is the alpha.
You could just do this:
sprite.color = new Color( Random.value, Random.value, Random.value, 1 );
// note the 1 in the alpha channel, not 255

[josriley]

Yeah, noticed that too. It looks like it takes a value over 1 as 1, so it doesn't affect it negatively, but I've fixed that as well. I think I was just confused since it shows it on a 1-255 scale in the Inspector.

[unikronsoftware]

That is a bit confusing. I think they've made it 0-255 to appeal to people accustomed to PS / Flash but in reality the values are 0..1, and can go above that too for HDR values.