# weird ?angle problem with draw step (blurred/transparent copy on mirrored angle)

Discussion in 'Programming' started by p4stoboy, Jan 13, 2020 at 11:55 AM.

1. ### p4stoboyMember

Joined:
Nov 6, 2018
Posts:
17
Instead of drawing once correctly it is drawing two of each segment on like a 20 degree angle adjacent to each other (the V shape which is more prominent the slower the segment is moving).

It's like the b position vector changes every other frame. It's definitely something to do with me updating that because it's the bvector end of the object that is shifting. I just don't understand how; the angle doesn't change value when the segment isn't moving.

Edit - although it doesn't happen to the front dude which is the only one following the mouse so maybe it's the actual x/y coordinates of the parent objects (the "back" end of each segment is where the origin is and the segment behind it is its child) that are screwing things up.

Things I have tried:
flooring every vector calculation

Video (watch fullscreen):

Code:
```//Segment Object

//create
bx = 0
by = 0
width = global.width
length = global.length
angle = 0
parent = 0
dir = 0

//step
var dx = length * dcos(angle)
var dy = length * -dsin(angle)

bx = x+dx
by = y+dy

if(point_distance(bx,by,parent.x-lengthdir_x(length, angle),parent.y-lengthdir_y(length, angle)) > 20){
speed = global.speed
dir = point_direction(x,y,parent.x,parent.y)
move_towards_point(parent.x-lengthdir_x(length, angle), parent.y-lengthdir_y(length, angle), speed)
}
else{
speed = 0
}

angle = dir

//draw
draw_line_width(x, y, bx, by, width);```

Last edited: Jan 13, 2020 at 12:16 PM
2. ### p4stoboyMember

Joined:
Nov 6, 2018
Posts:
17
Tried using lengthdir instead of dcos/dsin but still no good