Hi !
Featured games (91)
games approved by the League of Dukes
Games in Showcase (757)
Games in Android Showcase (229)
games submitted by our members
Games in WIP (844)
games currently in development
News: Read the Java Gaming Resources, or peek at the official Java tutorials
    Home     Help   Search   Login   Register   
Pages: [1]
  ignore  |  Print  
  Collision Detection with Beams  (Read 1298 times)
0 Members and 1 Guest are viewing this topic.
Offline Malohkan

Senior Devvie

while (true) System.out.println("WOO!!!!");

« Posted 2005-01-15 18:54:33 »

in Rimscape I check all collisions first with a circle test and then with an Area test.  This works fine for everything except for Beam weapons.

The problem is that I run a for loop through every ship around and if there's a collision I resize the beam so that it stops where there was a collision.  This is good half of the time.  However if I'm on the left of a guy, and there's a guy to the right of him, but the guy to his right comes earlier in the for loop, I'll hit him first, and then hit the guy on his left second.  That means I hit the guy farther away and closer in the same tick.

I need to make it so that the only collision made is the closest one.  Perhaps some "sweep test" idea that I've heard thrown around is what I need.

Another idea is that I somehow hold on to all the collisions made, but at the end of the loop only evaluate the closest one.

Anyone have any suggestions on what the best course of action would be?

Admin and Game Developer at
Play Rimscape!    |    Play Conquer!
Offline tom
« Reply #1 - Posted 2005-01-15 19:41:03 »

Ship closestShip = null;
for each ship in collection
 if ship collided with beam
  if (closestShip == null) || (ship is closer than closestShip)
   closestShip = ship

Pages: [1]
  ignore  |  Print  

EgonOlsen (42 views)
2018-06-10 19:43:48

EgonOlsen (22 views)
2018-06-10 19:43:44

EgonOlsen (43 views)
2018-06-10 19:43:20

DesertCoockie (197 views)
2018-05-13 18:23:11

nelsongames (124 views)
2018-04-24 18:15:36

nelsongames (123 views)
2018-04-24 18:14:32

ivj94 (864 views)
2018-03-24 14:47:39

ivj94 (125 views)
2018-03-24 14:46:31

ivj94 (768 views)
2018-03-24 14:43:53

Solater (140 views)
2018-03-17 05:04:08
Java Gaming Resources
by philfrei
2017-12-05 19:38:37

Java Gaming Resources
by philfrei
2017-12-05 19:37:39

Java Gaming Resources
by philfrei
2017-12-05 19:36:10

Java Gaming Resources
by philfrei
2017-12-05 19:33:10

List of Learning Resources
by elect
2017-03-13 14:05:44

List of Learning Resources
by elect
2017-03-13 14:04:45

SF/X Libraries
by philfrei
2017-03-02 08:45:19

SF/X Libraries
by philfrei
2017-03-02 08:44:05 is not responsible for the content posted by its members, including references to external websites, and other references that may or may not have a relation with our primarily gaming and game production oriented community. inquiries and complaints can be sent via email to the info‑account of the company managing the website of java‑
Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines | Managed by Enhanced Four Valid XHTML 1.0! Valid CSS!