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Newcomers DBPro Corner / ...

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matt rochon
21
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Joined: 15th Mar 2003
Location: Canada
Posted: 15th Mar 2003 19:19
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right so im tryin to use the mouse for movement in my game (kinda isometric i guess) but me being retarded at math i cant get the angles right..... im usin the x and y coords of the mouse and for some reason i cant figure out how to make the object turn to where the mouse is when you click...
math sucks
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Shadow
22
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Joined: 17th Oct 2002
Location: In the shadows
Posted: 15th Mar 2003 22:08
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If you've got DarkBASIC Pro, use the atanfull() command.

p.s. if you think math sucks, you'll have a hard time programming anything decent.
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matt rochon
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Posted: 16th Mar 2003 00:56
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ya ya dont worry i just get frustrated sometimes with math

i dont really think it sucks

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matt rochon
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Posted: 16th Mar 2003 01:04
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hmm tried it still not working.... i might not be using it right

i have my mousex in a variable and my mousey in a variable
then i have
newangle# = atanfull(xvar#,yvar#)
cangle# = curveangle(newangle#,cangle#,10)
yrotate object 1, ca#

any ideas?
btw its turning but not in the direction i wanted.

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Dave J
Retired Moderator
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Joined: 11th Feb 2003
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Posted: 16th Mar 2003 02:11
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Is it turning in the opposite direction? If so, then just change newangle# to a negative value.

newangle# = 0 - newangle#

That will only work if it's turning in the opposite direction, I don't have DBPro so I can't go into the actual use of the function any further, sorry.

"Computers are useless they can only give you answers."
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matt rochon
21
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Posted: 16th Mar 2003 02:27
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its kinda wierd
its turning in the wrong direction for about 1/3 the way around the screen, then it just goes back and forth about 10-20 degrees left or right of that spot no matter where i move the mouse

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Flashing Blade
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Joined: 19th Oct 2002
Location: United Kingdom
Posted: 16th Mar 2003 03:03
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atanfull requres the x distance and y distance

use:

newangle# = atanfull(objx#-xvar#,objy#-yvar#)
(obj is object u wanna rotate - bet u guessed that )
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Flashing Blade
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Location: United Kingdom
Posted: 16th Mar 2003 03:07
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hang on - u in 3d?
i thought you was doing 2d

not sure a tanfull will work - mouse position 2d - object in a 3d world.
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Flashing Blade
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Posted: 16th Mar 2003 03:11
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u could have a yangle# variable that changes with mouse movements x - and then when you click yrotate the object to yangle#

or do you wanna click the mouse pointer on the screen and get object to point at that position?
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matt rochon
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Posted: 16th Mar 2003 06:34
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ya i was trying to set it up so it used the center coordinate of the screen and the mouse click position to generate the angle to turn the player but i just dont know how to get it right... ill keep trying any more ideas are greatly appreciated
thanks guys

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matt rochon
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Joined: 15th Mar 2003
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Posted: 16th Mar 2003 06:59
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got it!

angle# = atanfull((screen height()/2)-mox#,(screen width()/2)-moz#)
angle# = 0-angle#

works perfectly
thanks everyone for ur help

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Flashing Blade
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Location: United Kingdom
Posted: 16th Mar 2003 13:13
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nice work

you owe maths an appology
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