1. Collision Detection.
- Posted by "Lucius L. Hilley III" <lhilley at CDC.NET> Apr 23, 2000
- 376 views
Warning: Fixed width font required to see the 2d MAP. I am working with Cells and SubCells. Take for example the following tiny 2D map. <PRE>--Vain attempt to force fixed width. :) 1234567 ####### # # # ## # ## # # # # ### # # # ####### </PRE> Every # is a wall and every space is open floor. Each # and space is a cell. Each cell is represented as taking up 4x4 SubCells. Thus, CellSize = 4. In other words. The above map is internally represented as this next map. <PRE>--Vain attempt to force fixed width. :) ############################ ############################ ############################ ############################ #### #### #### #### #### #### #### p #### #### #### #### #### ######## #### ######## ######## #### ######## ######## #### ######## ######## #### ######## #### #### #### #### #### #### #### #### #### #### #### #### #### ############ #### #### ############ #### #### ############ #### #### ############ #### #### #### #### #### #### #### #### #### ############################ ############################ ############################ ############################ </PRE> Within each cell a player can in any one of 16 places. I use {x,y} to represent the position of a player. player positions are zero based. There is a 'p' in the above map. It's {x, y} value is {6, 7}.. this means that x = 6 -- and y = 7 I calculate positions as follow: --Actually, I use an optimized set of equivalent calculations XCell = floor(x/CellSize) YCell = floor(y/CellSize) XSubCell = x - (XCell * CellSize) YSubCell = y - (YCell * CellSize) Keep in mind that the player can make diagonal moves. My goal is to have the player navigate the maze a bound by the walls. My current collision detection works quite well but is apparently flawed. Lucius L. Hilley III lhilley at cdc.net +----------+--------------+--------------+ | Hollow | ICQ: 9638898 | AIM: LLHIII | | Horse +--------------+--------------+ | Software | http://www.cdc.net/~lhilley | +----------+-----------------------------+
2. Re: Collision Detection.
- Posted by Bernie Ryan <xotron at BUFFNET.NET> Apr 23, 2000
- 378 views
On Sun, 23 Apr 2000 17:18:10 -0400, Lucius L. Hilley III <lhilley at CDC.NET> wrote: ><PRE>--Vain attempt to force fixed width. :) > >############################ >############################ >############################ >############################ >#### #### #### >#### #### #### >#### p #### #### <<<<< ------------------------------<< >#### #### #### Lucius: Shouldn't these walls >######## #### ######## be 4 wide ? >######## #### ######## >######## #### ######## >######## #### ######## >#### #### #### >#### #### #### >#### #### #### >#### #### #### >#### ############ #### >#### ############ #### >#### ############ #### >#### ############ #### >#### #### >#### #### >#### #### >#### #### >############################ >############################ >############################ >############################
3. Re: Collision Detection.
- Posted by "Lucius L. Hilley III" <lhilley at CDC.NET> Apr 23, 2000
- 390 views
Bernie, It should be obvious that the walls "#" are 4 wide. Are you referring to the spaces? If the walls you are pointing to aren't aligning with the walls above them, then you aren't using a fixed width font. Please try saving the message to your desktop and loading the message using Notepad. NOT Write. Notepad always uses a fixed width font. You could also try changing your Email program to use Courier, Courier New, Lucinda Console, Fixedsys, or any other fixed width font. Lucius L. Hilley III lhilley at cdc.net +--------------+--------------+ | ICQ: 9638898 | AIM: LLHIII | +--------------+--------------+ | http://www.cdc.net/~lhilley | +-----------------------------+ > ---------------------- Information from the mail header ----------------------- > Sender: Euphoria Programming for MS-DOS <EUPHORIA at LISTSERV.MUOHIO.EDU> > Poster: Bernie Ryan <xotron at BUFFNET.NET> > Subject: Re: Collision Detection. > -------------------------------------------------------------------------- ----- > > On Sun, 23 Apr 2000 17:18:10 -0400, Lucius L. Hilley III <lhilley at CDC.NET> > wrote: > > ><PRE>--Vain attempt to force fixed width. :) > > > >############################ > >############################ > >############################ > >############################ > >#### #### #### > >#### #### #### > >#### p #### #### <<<<< ------------------------------<< > >#### #### #### Lucius: Shouldn't these walls > >######## #### ######## be 4 wide ? > >######## #### ######## > >######## #### ######## > >######## #### ######## > >#### #### #### > >#### #### #### > >#### #### #### > >#### #### #### > >#### ############ #### > >#### ############ #### > >#### ############ #### > >#### ############ #### > >#### #### > >#### #### > >#### #### > >#### #### > >############################ > >############################ > >############################ > >############################ >