Collision Detection...Read Tutorial ...confused..

[hello]

i read the collision detection help
but im confused still
my attempts for collision is having a a boundary like a rectangle
EXAMPLE:
if enemyx>5 and enemy<10 and enemyy>45 and enemyy<55 then
[stuff happens]
end if

but this is a rectangle and most of our ships are not rectangular
so i need to to have a circular boundary or one that is around the picture of the spaceship.

thx thx if u are helping me
and please dont just post a source code please explain it to me

[Tony]

how many times did I say this already?! Scroll down to first reply of the collision detection. It explains circular collision detection

you should read the whole post (like text effects for example... source codes are scattered throughout the disussion because lots of people submit stuff). Same with every other post. Read the whole thread.

if you dont want, use SEARCH (link found on top /\ ) and find posts containing keyword you're looking for

[William Hui Xue]

8)

Hello this is William, hi Hang. I am here to sooth your soul and councel you. Please do not feel that everyone is against you. You know that some loves you like your parents and I and our Christian brothers. Do not be bothered with such matter Hang. Instead forgive them, and show your light to the world.

Sincerely William Hui Xue

[Prince]

[Tony]

sorry if I appear edgy... its just that it gets annoying when the same question is asked over and over and over again and noone bothers to look up the anwers already posted.

[ThunderChuncky]

Nobody blames u, tony. <pat on back>

[naoki]

sorry if hello's been on everyone's nerves .... he's just a demanding guy

so obviously he'd be on everyone if his work wasn't progressing well

[Homer_simpson]

hmmm... the guy said that he wanted collision detection for his ship and i dont think his ship is circular so he has to use another way to detect collision...

[Tony]

well you could break the ship down into couple of boxes... would be somewhat accurate

[naoki]

the ship is triangular in shape, and so a circle would at least shave off unnecessary hotspots from the detection system.

[Homer_simpson]

tony wrote:

well you could break the ship down into couple of boxes... would be somewhat accurate

yeah that what i was thinking of too... it's a good idea but i dont think boxes would do we could just cut the ship to lines and check it that way...

[Catalyst]

theres a way to check if a point is inside a polygon (cant remeber exactly)
that would be an accurate way

[Homer_simpson]

that would be the faster way both ways work fine....

[hello]

we have many ships some are rectangular so thats easy but we want like a basic way to detect if the projectile is hitting the enemy and vice versa also we need to check if the enemy ship is crashing into the main ship

[Tony]

you can consider the projectile to be a dot so you can just check if that dot is inside rectangle/circle/triangle to determine if collision has occured or not.

As for the collision between ships... well its easy to determine that if both are circles. If they're rectangles I think it would be enough to just check if any of the corners of the ship is inside the rectangle of another.