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[Ricky]

Ricky

[Request / Listing] [GM6] Help with collision

I'm having a lil' trouble with collision...
I don't work with GM6 for a few months - and lost practice xP
Can someone tell me how to make my character with a 16x16 mask collide with a rock?
(Note: in case this helps (xP) I like to use depths - but still haven't got a lot of ways to work :\)

[whitechapel]

whitechapel

Re: [GM6] Help with collision

This really depends on the walking system your using, but play around with these commands

Code: [Select]

position_empty(x,y)
place_free(x,y)
collision_point(x,y,obj,prec,notme)
collision_rectangle(x1,y1,x2,y2,obj,prec,notme)
collision_circle(xc,yc,radius,obj,prec,notme)
collision_ellipse(x1,y1,x2,y2,obj,prec,notme)
collision_line(x1,y1,x2,y2,obj,prec,notme)

you can set all x's and y's to a relative position such as "x-16"

Here is an example code that pretty much says, "If the player is holding down the left arrow key, and the place 3 pixels to his/her sprite is free then move him 3 pixels to the left. This excludes the commands to change animations an such though.

Code: [Select]

if keyboard_check(vk_left) = 1 then
{
  if place_free(obj_player.x-3,obj_player.y) then
  {
    obj_player.x -= 3;
  }
}
There are of course countless variations to this code based upon your movement engine.

Hope this helps 

EDIT: In my opinion the GM Help file is the most useful resource for coding. It lists all of the scripting commands, describes them, and gives examples of practical use. If it weren't for the GM help file, I'd still be using rm2k (>_<) So if this doesn't help, I highly suggest you study the help file.

[sjegtp]

sjegtp

Re: [GM6] Help with collision

Code: [Select]

if (character.x <= rock.x + rock.sprite_width && rock.x <= character.x + 16 && character.y <= rock.y + rock.sprite_height && rock.y <= character.y + 16)//OBS: The "<=" may have to be changed to "<", depending on when the script is executed.
{
  //collision exists
}