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Newcomers DBPro Corner / How can i get a sprite to turn towards the mouse?

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Game Master1330
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Posted: 20th Sep 2010 22:29
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I am making a spacship game, and the ship constantly moves forward, but i want it to always face the mouse.

Any help much appriciated =D

Matt

Umm...
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Dodga
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Posted: 20th Sep 2010 23:00
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This should help explain it, you have to use either trig, or a vector.

http://www.albinoblacksheep.com/flash/trig
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Game Master1330
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Posted: 21st Sep 2010 00:55
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Thanks but im stumped.

y is 512
x is 300

tan(theta) = y/x

how can i work out theta in darkbasic?

trig is so confusing <_<

Matt

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Game Master1330
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Posted: 21st Sep 2010 00:57
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oh wait
i just realized db supports sin cos tan lolz

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Neuro Fuzzy
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Posted: 23rd Sep 2010 06:53
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Basically, you have all these values:
sprite_position_x
sprite_position_y
mousex()
mousey()
sprite_current_angle

What you want to do is this:
sprite_new_angle=atanfull(mousex()-sprite_position_x,mouey()-sprite_position_y)

Then you'll want to step a small distance from sprite_current_angle to sprite_new_angle, so that it looks like the sprite is turning slowly (theres a dbpro command that does that)

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