Some functions that work with vectors (2.0)

When programming complicated physics into a game, you may notice that, unlike computers, physics uses vectors (direction and magnitude) instead of normal x and y values. The following functions work with vectors.
Note: Positive y values are down, just like in DB.

                                    ` This code was downloaded from The Game Creators
                                    ` It is reproduced here with full permission
                                    ` http://www.thegamecreators.com
                                    
                                    `===============VECTOR FUNCTONS===============
`When programming complicated physics into a game, you may notice that, unlike computers, physics uses vectors (direction and magnitude) instead of cartesian (x and y) values.  The following functions work with vectors.
`Note: Positive y values are down, just like in DB.


`VECTOR MAGNITUDE
`This tells you the magnitude of a vector based on x and y coordinates.
function vector magnitude#(x#,y#)
dist#=abs(((x#^2)+(y#^2))^0.5)
endfunction dist#

`VECTOR DIRECTION
`This tells you the direction of a vector based on x and y coordinates.
function vector direction#(x#,y#)
y#=y#*-1
direction#=atanfull(x#,y#)
endfunction direction#

`X COORDINATE
`This tells you the x coordinate of a vector based on magnitude and direction.
function x coordinate#(magnitude#,direction#)
x#=magnitude#*(sin(direction#))
endfunction x#

`Y COORDINATE
`This tells you the y coordinate of a vector based on magnitude and direction.
function y coordinate#(magnitude#,direction#)
y#=magnitude#*(cos(direction#))
y#=y#*-1
endfunction y#

`ANGLED VECTOR MAGNITUDE
`This one is a little more complicated.  It takes a vector and finds how much force (magnitude) it has in a different direction.  The best way to understand it is to look at the code.
function angled vector magnitude#(magnitude#,direction#,newdirection#)
newmagnitude#=magnitude#*cos(newdirection#-direction#)
endfunction newmagnitude#

`MAGNITUDE OF ADDED VECTORS
`Self-explanatory.
function magnitude of added vectors#(magnitude1#,direction1#,magnitude2#,direction2#)
x1#=x coordinate#(magnitude1#,direction1#)
y1#=y coordinate#(magnitude1#,direction1#)
x2#=x coordinate#(magnitude2#,direction2#)
y2#=y coordinate#(magnitude2#,direction2#)
x#=x1#+x2#
y#=y1#+y2#
magnitude#=vector magnitude#(x#,y#)
endfunction magnitude#

`DIRECTION OF ADDED VECTORS
`Self-explanatory.
function direction of added vectors#(magnitude1#,direction1#,magnitude2#,direction2#)
x1#=x coordinate#(magnitude1#,direction1#)
y1#=y coordinate#(magnitude1#,direction1#)
x2#=x coordinate#(magnitude2#,direction2#)
y2#=y coordinate#(magnitude2#,direction2#)
x#=x1#+x2#
y#=y1#+y2#
direction#=vector direction#(x#,y#)
endfunction direction#