turing game object collision

[Gold Flame]

What is it you are trying to achieve?
Begining the programming/coding of a video bame with combat similar too zelda a link to the past


What is the problem you are having?
I dont know how to make the characters and objects or boundaries on pathways collide
I also need the edge of the character to collide with the edge of another character as oppsed to the rectanguler edges of the transparent image colliding

Describe what you have tried to solve this problem
I havent tried it yet i just havent the foggiest clue how to do it


Post any relevant code (You may choose to attach the file instead of posting the code if it is too long)
my code is just beginning. i havent yet converted it from the other code i used in highschool but heres what i have, although not entirely realevent yet

Turing:

setscreen ("graphics")              % Enter graphics mode setscreen ("graphics:800;600")              % setscreen ("nocursor")                      % Turn off cursor setscreen ("noecho")                    % Do not echo keys colorback (black) cls var Control : array char of boolean var VERT, lr : int %%%%%%%%%%%%%%%%% New Workspace "christian alchemy" %%%%%%%%%%%%%%%%% %Controls %%%%%%% loop     Input.KeyDown (Control)       if Control (KEY_RIGHT_ARROW) then         lr := lr + 2     end if     if Control (KEY_LEFT_ARROW) then         lr := lr - 2     end if     %%%%%%%%%%%%%%%%%%%%%%%%%%     delay (10)     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     if Control ('z') then         put "jump" ..         delay (10)     else         stanceken     end if     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     if Control ('x') then         kickken         delay (100)     else         stanceken     end if     if Control ('c') then         punchken         delay (110)     else         stanceken     end if     if Control (' ') then         specken         delay (10)     else         stanceken     end if      %%%%%%% X     Input.KeyDown (Control)         if Control ('6') then         lr2 := lr2 + 2     end if     if Control ('4') then         lr2 := lr2 - 2     end if     %%%%%%%%%%%%%%%%%%%%%%%%%%     delay (10)     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     if Control ('9') then         kickkenx         delay (100)     else         stancekenx     end if     if Control ('7') then         punchkenx         delay (110)     else         stancekenx     end if     if Control ('1') then         speckenx         delay (10)     else         stancekenx     end if %end controls %%%%%%%%%%%%%%%%%%End new workspace "christian alchemy%%%%%%%%%%%%%%% %%%%%%%%%%%%%% KEN VARS var KenStance : int var Kenpunch : int var Kenkick : int var Kenspec1 : int var Kenspec2 : int %%%%%%%%%%%%%% END KEN VARS var vert2, lr2 : int lr2 := 400 %%%%%%%%%%%%%% kenx VARS var kenxStance : int var kenxpunch : int var kenxkick : int var kenxspec1 : int var kenxspec2 : int %%%%%%%%%%%%%% END KEN VARS var raycler :int var BACK : int %%%%%%%%%MUSIC process DoMusic     loop         Music.PlayFile ("darude_sandstorm.mid")     end loop end DoMusic fork DoMusic %%%%%%%%%%END MUSIC delay (2000) cls %%%%%%%%%%%%%%%%%  KEN  %%%%%%%%%%%%%%%%% KenStance := Pic.FileNew ("ken.jpg") Kenpunch := Pic.FileNew ("KenPunch.jpg") Kenkick := Pic.FileNew ("KenKick.jpg") Kenspec1 := Pic.FileNew ("kenspec_1.jpg") Kenspec2 := Pic.FileNew ("kenspec_2.jpg") procedure stanceken     Pic.Draw (KenStance, lr, VERT, picCopy) end stanceken procedure punchken     Pic.Draw (Kenpunch, lr, VERT, picCopy)     end punchken procedure kickken     Pic.Draw (Kenkick, lr, VERT, picCopy) end kickken procedure specken     Pic.Draw (Kenspec1, lr, VERT, picCopy) delay (500) Pic.Draw (Kenspec2, lr, VERT, picCopy) end specken %%%%%%%%%%%%%%%%% END KEN %%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%  KEN X %%%%%%%%%%%%%%%%% kenxStance := Pic.FileNew ("kenX.jpg") kenxpunch := Pic.FileNew ("KenXPunch.jpg") kenxkick := Pic.FileNew ("KenXKick.jpg") kenxspec1 := Pic.FileNew ("kenXspec_1.jpg") kenxspec2 := Pic.FileNew ("kenXspec_2.jpg") procedure stancekenx     Pic.Draw (kenxStance, lr2, vert2, picCopy) end stancekenx procedure punchkenx     Pic.Draw (kenxpunch, lr2, vert2, picCopy)     end punchkenx procedure kickkenx     Pic.Draw (kenxkick, lr2, vert2, picCopy) end kickkenx procedure speckenx     Pic.Draw (kenxspec1, lr2, vert2, picCopy) delay (500) Pic.Draw (kenxspec2, lr2, vert2, picCopy) end speckenx %%%%%%%%%%%%%%%%% END kenx %%%%%%%%%%%%%%%%% VERT := 100 lr := 100 vert2 := 100 lr2 := 400           %%%%%%%%%%%%%%%%%%%%%%%% X END          end loop %%%%%%%%%%%%%%%%%%%%%%%%

Please specify what version of Turing you are using
4.1.1.0

[Raknarg]

First off, you should state all your procedures and variables at the beginning.

[Tony]

A good place to start figuring out collision detection is to draw out a few sketches of colliding objects on paper.

[Gold Flame]

Raknarg @ Fri Jul 22, 2011 5:39 pm wrote:

First off, you should state all your procedures and variables at the beginning.

yes this a old game an im disassembleing the code to make a new game

[Gold Flame]

Tony @ Fri Jul 22, 2011 6:00 pm wrote:

A good place to start figuring out collision detection is to draw out a few sketches of colliding objects on paper.

I just need to know how to program the main character
to stop when he runs into another character or a tree or wall instead of walking right through it.

a jumping system would be helpful too cuz i dont even know where to start on that
any advice?

[Zren]

Collision Detection is way easier to understand if you start out with thinking of dots on a grid, then evolving into basic shapes (rectangles and circles). In your case, I'd suggest the rectangles as they can surround your sprites more accurately.

Think along the lines that only one thing can be somewhere at once (obvious). So when you move, you make sure no other objects are there first. Walls included. Start with only two objects, link and your wall.

if (wall.x = link.x and wall.y = link.y) then link is currently at the coordinates where the wall is. Remember, you want to check where link will be before moving, not where he is right now.

Once you've got it so link can't move into that one point in space, try making the wall a rectangle. Then try having link as a rectangle.