Kaggio
Member
|
Problem with if
Hi,
I tried to modyfi code from tutorial "Simple 3D". I want to do I click 'K' then Ball appeared and again click 'K' Ball disappeared. I've done a few codes - anyone work....
code1:
Code:
void InitPre()
{
EE_INIT();
App.flag=APP_MS_EXCLUSIVE; // setup mouse exclusive mode to hide cursor
}
bool Init()
{
Cam.dist=5; // set initial camera distance to 5 meters
return true;
}
void Shut()
{
}
bool Update()
{
if(Kb.bp(KB_ESC))return false;
Cam.transformByMouse(0.1, 10, CAMH_ROT|CAMH_ZOOM); // simple camera handle allowing minimum 0.1 and maximum 10 meters zoom, and allowing rotation and zooming
return true;
}
void Draw()
{
D.clear(WHITE);
SetMatrix(MatrixIdentity); // set matrix before drawing
if(Kb.bp(KB_K))
{
Ball(1 , Vec(-3, 0, 0)).draw(BLACK);
}
Box (1 ).draw(BLACK); // draw black box with 1 meter radius
if(Ms.b(1))Tube(0.3, 2, Vec( 3, 0, 0)).draw(BLACK); // when 1st mouse button pushed draw black tube with 0.1 meter radius, 2 meters height and (3,0,0) position
}
//Ball appeard only for a moment and then disappeared
code 2:
Code:
int abc=0;
void InitPre()
{
EE_INIT();
App.flag=APP_MS_EXCLUSIVE; // setup mouse exclusive mode to hide cursor
}
bool Init()
{
Cam.dist=5; // set initial camera distance to 5 meters
return true;
}
void Shut()
{
}
bool Update()
{
if(Kb.bp(KB_ESC))return false;
if(Kb.bp(KB_K))abc=1;
Cam.transformByMouse(0.1, 10, CAMH_ROT|CAMH_ZOOM); // simple camera handle allowing minimum 0.1 and maximum 10 meters zoom, and allowing rotation and zooming
return true;
}
void Draw()
{
D.clear(WHITE);
SetMatrix(MatrixIdentity); // set matrix before drawing
if(abc=1)
{
Ball(1 , Vec(-3, 0, 0)).draw(BLACK);
}
Box (1 ).draw(BLACK); // draw black box with 1 meter radius
if(Ms.b(1))Tube(0.3, 2, Vec( 3, 0, 0)).draw(BLACK); // when 1st mouse button pushed draw black tube with 0.1 meter radius, 2 meters height and (3,0,0) position
}
//automaticly appeard when start application ;/
What's wrong? :/
(This post was last modified: 07-04-2015 03:38 PM by Kaggio.)
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| 07-04-2015 03:38 PM |
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Tottel
Member
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RE: Problem with if
First of all: Please try to keep layout and naming conventions in mind.
Second: if(Kb.bp(KB_K)) {..} will only be true when you start pressing K. It will only be true for 1 frame, then it will be false again until you release and press again. If you want to do a toggle you will need to use a bool variable to store if you pressed K or not.
Third: abc = 1 should be abc == 1. Else you are ASSIGNING a variable, not checking.
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| 07-04-2015 03:50 PM |
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Kaggio
Member
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RE: Problem with if
Ok thanks i have done it  I forgot about == and =. Thanks a lot
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| 07-04-2015 04:19 PM |
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