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General and Gameplay Programming Programming

Started by eltharynd September 27, 2013 10:04 PM

6 comments, last by Ronnie Mado Solbakken 10 years, 6 months ago

eltharynd

123

Author

September 27, 2013 10:04 PM

i was coding something while i stopped 1 hours on some simple math problem...

at first i thought i was doing something wrong but after a while i realized this


	float x = eng->mWidth;
	float y = eng->mHeight;

returned 0 in x... i had to resolve this way


	float xx = eng->mWidth;
	float yy = eng->mHeight;
	float x = (800 / xx);
	float y = (200 / yy);

and everything worked...

can someone explain to me while i cannot include a member of another class in an equation?? did i do something wrong??? please help me understand...

Cornstalks

7,033

September 27, 2013 10:07 PM

Huh? The two things you have posted there aren't the same. Anyway, my guess is integer division issues. Does this fix your problem?

float x = 800.0f / eng->mWidth; // (feel free to cast eng->mWidth to float; I didn't because promotion rules will make it at least a float anyway)
float y = 200.0f / eng->mHeight;

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eltharynd

123

Author

September 27, 2013 10:09 PM

thanks :) that solved

alvaro

21,604

September 27, 2013 10:37 PM

Wow, Cornstalks. That was impressive. You managed to figure out what the code actually said (`800 / eng->mWidth'), even though the OP posted something else.

To eltharynd: Please copy and paste code in the future so we don't have to rely on Cornstalks's crystal ball.

Muzzy A

737

September 29, 2013 12:37 AM

LOL this topic brightened my day.

Khatharr

8,814

September 29, 2013 03:42 AM

Wow, Cornstalks. That was impressive. You managed to figure out what the code actually said (`800 / eng->mWidth'), even though the OP posted something else.

To eltharynd: Please copy and paste code in the future so we don't have to rely on Cornstalks's crystal ball.

Once again I'm impressed by Cornstalks' balls.

void hurrrrrrrr() {__asm sub [ebp+4],5;}

There are ten kinds of people in this world: those who understand binary and those who don't.

QuinnDexter

153

October 04, 2013 03:42 PM

There are posts on Gamedev that are boring and some that are interesting but this one made my Friday