Legacy GM Slow object as it grows in size?

[TheRBZ]

I have a player object and I want it so that as it gets larger, it slows down

I've tried:
Setting 'movespeed' variable to a decimal (eg 0.5) but it causes jitter because you can't move half a pixel

putting my movement code in an alarm and changing the speed of that alarm, but the alarm ignores the following decimal (eg if I make it 2.5 it just acts as if it's 2) and the movement is laggy once the player gets too big.

First solution

///change speed based on radius
movespeed=5/radius

/*
radius=5, speed 1
radius=10, speed 0.5
radius 20, speed 0.25
*/

Second solution

*insert movement code here*
alarm[0]=(radius/5);

Are there any valid solutions? I'm thinking I could rescale everything (sprites, rooms, views) by x4 so the player can move '0.5 pixels, 0.25 pixels etc' at a time. Ideas?

 

[dannyjenn]

Try rounding the coordinates in the drawing code. That might reduce the jitter.
Are you sure you want the speed to be .5 or .25 though? That's extremely slow, which might be why the jitter is so noticeable.

 

[TheRBZ]

My base speed is 1 but because everything is as small as possible in my game, it looks pretty fast (for comparison, the view is 256x144)

 

[TheouAegis]

Divude the speed by the sprite's scale?

hspeed = movespeed/image_xscale

x+=hspd/image_xscale