[jorijo]

can anyone explain me how to generate random movement of a character horizontaly using rand function?

only can generate movement but its not random...

[Nova Dragoon]

the rand functions works like this:

you need to seed it first:
I use this:

#include <time.h>
#include <stdlib.h>
srand(time(0));

then to use rand:

value = rand()%range  +  offset;

Where range is the number of random numbers to go between, and offset is where they should start from 0.

[jorijo]

Ive understand how it works but for example how do I print the movement of a char?!
sory if its a dummy question but Im a newbie...

This post has been edited by jorijo: 16 August 2006 - 09:58 AM

[frog]

how are you planning to generate any movement at all?? are you using graphics mode of text mode??

[jorijo]

	c.fcolor(0);						/* atribui a cor azul ao Carro2*/
				gotoxy(23,80-i);printf("%c",219);	/* desenha o caracter do Carro2*/
				gotoxy(22,80-i);printf("%c",219);
				for(f=1;f<10000000;f++);			/* movimento do Carro2*/
				
				if (carro2==10)						/* dimensão do Carro 2 - 10 caracateres*/
				{
					gotoxy(22,80-i+carro2);
					printf(" ");					/* apaga a posicao anterior à dimensao do Carro2*/
					gotoxy(23,80-i+carro2);
					printf(" ");
				}
				else
					carro2=carro2+1;

this how Im making the movemement

This post has been edited by jorijo: 16 August 2006 - 11:36 AM

[frog]

ohk that would be text mode. im not sure if im getting the co ordinates correct but the y axis is from 0-25 and x axis 0-80(correct me if im wrong) bow generate using rand() different values for coordinates in the loop and use them with the gotoxy() function. try that. i guess it should work

[born2c0de]

Aah...the matrix effect.

[jorijo]

yes the co ordinates are right but I dont understand what you mean with this --> "... bow generate using rand() different values for coordinates in the loop and use them with the gotoxy() function."

born2code what do you mean with matrix effect?

[frog]

oops silly typo it was "now" and not "bow" . a little bit of explanation again. i hope you got the use of rand() . now you can generate different combintaion of coordinates from this .so you can use the found set of coordinates in the gotoxy() function and therefore you would get your random motion

[jorijo]

now I can generate random using rand() but cant control the speed do you know someway to control it?

[frog]

well yes you can always use the delay() function defined in dos.h . the argument passed to it is taken in milliseconds. it suspends the execution of the program for that much time.