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[Derp(duck)]

Some nice tutorials here 

[Sheepolution]

The origin of the boat and all the arrows is 32 x 32 (in the center).

Does anyone know what the problem is and how I can solve it?

For the .gmk file: http://updo.nl/file/7c64b95b.gmk

[Geeze]

It happens because you are only checking one instance! Instead you should iterate through all instances(with is perfect for this)

Here's a working(?) piece of code:

Code:

with(obj_arrow_down)
{
  if(x == other.x && y == other.y){ //other refers to ship not arrow
    direction = 270
    image_angle = 270
  }
}

And repeat that for each arrow type

[Sheepolution]

with(obj_arrow_down)
{
  if(x == other.x && y == other.y){ //other refers to ship not arrow
    other.direction = 270
    other.image_angle = 270
  }
}

other.direction and other.image_angle added, without that the image_angle of the arrow changes.

But you really helped me with this! Thanks :D

[Dragonmaw]

Stickied thread.

[Zack Bell]

I'm having troubles implementing both Chevy's scaling and the Easy Lighting extension at the same time. I'm assuming that Easy Lighting uses surfaces and that the scaling interferes with it. 

[Theophilus]

I'm having troubles implementing both Chevy's scaling and the Easy Lighting extension at the same time. I'm assuming that Easy Lighting uses surfaces and that the scaling interferes with it.  

The lighting extension probably resets the target. Here's an idea:

make a script, and name it surface_reset_target. When called in code, it SHOULD execute that script instead of surface_reset_target. In the script, set the drawing target to the scaled surface in Chevy's example. Honestly, probably not ideal.

[Zack Bell]

Hmm, that's not a bad idea. I'll give it a try

[BomberTREE]

I have a top down player, my goal is to have the players head facing the mouse, as the players body slowly works its way towards the same direction.

I would like to do this through the draw event possibly with draw_sprite_ext, but how would I get that rotation value to be perfectly towards the mouse?
Mainly I would like to know how I would  adjust the bodys rotation speed to be a tad bit slower than the heads xD

Help would be very much appreciated  

[Zack Bell]

Code:

//HEAD CODE

point_direction(x, y, mouse_x, mouse_y);

Code:

//BODY CODE

/*
**  Usage:
**      turn_toward_direction(direction,turnspeed)
**
**  Arguments:
**      direction       direciton you wish to achieve, degrees
**      turnspeed       rate at which to turn, degrees
**
**  Returns:
**      nothing, but rotates the calling instance toward
**      a desired direction by a given number of degrees
**
**  GMLscripts.com
*/
{
    var wdir, tempdir, turnspeed;
    wdir = argument0;
    turnspeed = argument1;
    if (abs(wdir-direction) > 180) {
        if (wdir > 180) {
            tempdir = wdir - 360;
            if (abs(tempdir-direction) > turnspeed) {
                direction -= turnspeed;
            } else {
                direction = wdir;
            }
        } else {
            tempdir = wdir + 360;
            if (abs(tempdir-direction) > turnspeed) {
                direction += turnspeed;
            } else {
                direction = wdir;
            }
        }
    } else {
        if (abs(wdir - direction) > turnspeed) {
            if (wdir > direction) {
                direction += turnspeed;
            } else {
                direction -= turnspeed;
            }
        } else {
            direction = wdir;
        }
    }
}

Something like that?

EDIT: You would call the body script with something like:  turn_towards_direction(oHead.direction, turnSpeed);

[BomberTREE]

You saved me from spending hours on the nasty game maker forums! Thanks alot :D

@thatshelby - Oh wow, that was easy :O

[Zack Bell]

Hahaha, no problem. 

[Theophilus]

Code:

image_angle += sin((direction - image_angle) * pi / 180) * 8;

make 8 higher or lower to adjust the speed.

This turns image_angle towards the value stored in direction; change them if you like

[droqen]

I think you need to put some modulo in there somewhere.
Otherwise:

if image_angle is 0 and direction is 359, you want image_angle -= 1 (because -1 = 360)
but with that code, it'd take the long way around.

[Theophilus]

hmmm, i'll test it

[Desert Dog]

xot over at gmlscripts optimised the turn_toward_script down to this:
direction += median(-argument1, argument1, ((((argument0 - direction) mod 360) + 540) mod 360) - 180);

with argument0 being the direction you want to turn to, and argument1 being the turnspeed.

[BomberTREE]

Where's the wall of text?
That's awesome 

[Zack Bell]

xot over at gmlscripts optimised the turn_toward_script down to this:
direction += median(-argument1, argument1, ((((argument0 - direction) mod 360) + 540) mod 360) - 180);

with argument0 being the direction you want to turn to, and argument1 being the turnspeed.

Holy shit, that's impressive. 

[Theophilus]

Nice and short, and maybe better, but it doesn't feel as fluid. With my method there's sort of a whip to it. that's not there with xot's script

[Desert Dog]

Here's a test you can try with 'your' method.

1- Open a new Gm project
2-load a sprite. A nice one to rotate
3-make a new object. Put your code in the step event.
4- make a key press event, and place this code in that:

Code:

//code kudos, rinkuhero
//http://studioeres.com/games/content/7-game-maker-tips-experienced-users
execute_string(get_string("Command?",""));

Start the game. Hit the key you specified. and type in 'direction+=180'

Watch your car rotate(or not, as the case may be). It sacrifices functionality for smooth rotation. Works 90% of the time, and is great for things like arrows, but not for a point-to-mouse game, at least, not without some additional code.