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Animation

Posted on 1999-01-19
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Last Modified: 2013-11-19
I would like an example of simple animation using a timer.
For example every half second a circle moves 10 pixels across the screen.
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Question by:bradsoblesky
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cdc_sickle earned 30 total points
ID: 1184563
void __fastcall TForm1::ExampleTimer(TObject *Sender)
{
short t;
ExampleTimer->Interval = 400;
t++;

if (t==5) t=1;

if (t==1) Ball->Left += 10;
if (t==2) Ball->Left += 10;  //blah blah, and so on, is this what you wanted?
//=+ is just, where the ball is, plus 10 more

}
//---------------------------------------------------------------
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Expert Comment

by:cdc_sickle
ID: 1184564
this is a very simple way of doing it, i dont know if you wanted more coplicated, also, short t, would be declared in the program or form create lines, and same with the setting the interval of the timer
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Expert Comment

by:MCoroli
ID: 1184565
There are several examples in C++ Builder3 and in Delphi.
They are enough simple.
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Author Comment

by:bradsoblesky
ID: 1184566
cdc_sickel could you please give great details.  For example lets say the ball is in a picturebox and I want to move the whole picturebox to make it look like the ball is moving.  I also have no clue where or in what file to put this in.  
Is this under the timers event calls or whatever?
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Expert Comment

by:cdc_sickle
ID: 1184567
Hmm, ok, this is all timers, and are you saying an image box from a bitmap?

Ok, lets say you have your bmp in the same directory of the program your making. This file name is called Ball.bmp.
You place a timer, and a ImageBox on the form, and goto the code.
Right after the "#pragma resource "*.dfm""
Type
   short b;

b represents the Ball for the timer to work off of, as in the animation code i put above.

In the __fastcall of TForm1
put the following:

NameOfTimer->Interval = 400; //Anywhere from like 10 - 700 could do.

NameOfImageBox->Picture->LoadFromFile("Ball.bmp"); //Telling the Image box to be the Ball when the program starts

Also, have a button on the form...
In the OnClick property for that button, type:

NameOfTimer->Enabled = true; //Animation Start

Now, for the timer property's you type somthing like...



ExampleTimer->Interval = 400;
t++;

if (t==3) t=1; //This is a continuous loop, that would make the ball go right off the screen.

if (t==1) NameOfPicture->Left += 10;
if (t==2) NameOfPicture->Left += 10;  //blah blah, and so on, is this what you wanted?
//+= is just, where the ball is, plus 10 more



There are many ways of going about this, but this is a simple way that i found, you could also make another botton that has the code like

NameOfTimer->Enabled = false;
NameOfImage->Left = 70; //or what ever the picture started at.
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Author Comment

by:bradsoblesky
ID: 1184568
Now thats what I'm talking about.  Thanks A Lot!!!
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Expert Comment

by:cdc_sickle
ID: 1184569
He he, your welcome!
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