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Rem Project: GetAngleFrom2DCoordinate
Rem Created: 16/07/2003 00:14:38
Rem Author: Lee 'Dr DB' Bamber :)

rem Set coordinates
youx#=320 : youy#=240

rem Main loop
do

rem Set moving target coordinate
targetx#=mousex() : targety#=mousey()

rem Calculate angle from YOUR position to TARGET position
dx#=targetx#-youx#
dy#=targety#-youy#
angle#=atanfull(dx#,dy#)

rem Clear screen
cls

rem Draw coordinates
circle youx#,youy#,5
circle targetx#,targety#,5

rem Show angle by drawing line
line youx#,youy#,newxvalue(youx#,angle#,100),newzvalue(youy#,angle#,100)
center text 320,260,"ANGLE = "+str$(int(wrapvalue(angle#)))

rem End loop
loop

//Project: GetAngleFrom2DCoordinate
//Created: 16/07/2003 00:14:38
//Author: Lee 'Dr DB' Bamber :)

#include <DarkGDK.h>
#include <string.h>

//Set coordinates
int youx = 320;
int youy = 240;

//Main loop
void DarkGDK ( void )
{
    dbSyncOn ( );
    dbSyncRate ( 60 );

    while ( LoopGDK ( ) )
    {
            //Set moving target coordinate
            int targetx = dbMouseX();
            int targety = dbMouseY();

            //Calculate angle from YOUR position to TARGET position
            int dx = targetx - youx;
            int dy = targety - youy;
            int angle = dbATANFULL ( dx, dy );

            //Clear screen
            dbCLS();

            //Draw coordinates
            dbCircle ( youx, youy, 5 );
            dbCircle ( targetx, targety, 5 );

            //Show angle by drawing line
            //Don't have the time to make this part work.
            dbLine ( youx, youy, dbNewXValue ( youx, angle, 100 ), dbNewZValue ( youy, angle, 100 ) );
            char* str1 = "ANGLE = ";
            char* str2 = dbStr ( int ( dbWrapValue ( angle ) ) );
            char* str3 = strcat ( str1, str2 );
            dbCenterText ( 320, 260, str3 );
            
            dbSync ( );
    }
}

//Project: GetAngleFrom2DCoordinate
//Created: 16/07/2003 00:14:38
//Author: Lee 'Dr DB' Bamber :)

#include <DarkGDK.h>
#include <string.h>

//Set coordinates
int youx = 640;
int youy = 480;

//Define size of line
#define line_size 400

//Main loop
void DarkGDK ( void )
{
    dbSyncOn ( );
    dbSyncRate ( 60 );

    while ( LoopGDK ( ) )
    {
            //Set moving target coordinate
            int targetx = dbMouseX();
            int targety = dbMouseY();

            //Calculate angle from YOUR position to TARGET position
            int dx = targetx - youx;
            int dy = targety - youy;
            int angle = dbATANFULL ( dx, dy );

            //Clear screen
            dbCLS();

            //Draw coordinates
            dbCircle ( youx, youy, 5 );
            dbCircle ( targetx, targety, 5 );

            //Show angle by drawing line
            dbLine ( youx, youy, dbNewXValue ( youx, angle, line_size ), dbNewZValue ( youy, angle, line_size ) );
            
            dbSync ( );
    }
}

dbCenterText ( 320, 260, "ANGLE = " + dbStr ( int ( dbWrapValue ( angle ) ) ) );