If I have a topdown rpg type game. And movement in 8 directions (N/E/S/W/NE/NW/SE/SW) in a 2d game that involves both x and y velocity. I'm finding when i'm moving in the diagonal directions i'm building both x and y velocity and its making my character move faster than they do in straightline directions. Is there a fix for this so no matter what of the 8 I travel its the same speed?

so say...
vel_x, vel_y=0
spd=1

then in my gameloop
vel_x*=0.2
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.
then I add the vel_x to my x sprite position and same with vel_y for my y sprite

How would I address this...? Would I look at btn press actions for when both keys are
held....or limits for when vel_x AnD vel_y are 'high' enough in tandem.... I've done the latter and it helps but I can't make it accurate.

Images: With velocity removed and just +-1 speed increases/decreases. Left is the proposed adjustment to the vertical movement. Right is no adjustment. Is Left moving at same speed all the time and right isn't?

I have a 2D top-down RPG type game, with movement in 8 directions (N/E/S/W/NE/NW/SE/SW) involving both x and y velocity. 

I'm finding when I'm moving in the diagonal directions, I'm building both x and y velocity and it's making my character move faster than they do in a straight line along only x or only y. Is there a fix for this, so no matter which of the 8 directions I travel along, it's the same speed?

My code works like this. I initialize my variables and speed:

vel_x, vel_y=0  
spd=1

Then each frame in my game loop, I apply drag to reduce the velocity:

vel_x*=0.2  
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.

Lastly, I add the vel_x to my sprite's x position and same with vel_y for my sprite's y position.

How would I address this? Would I look at button press actions for when both keys are held, or limits for when vel_x and vel_y are 'high' enough in tandem?

I've done the latter and it helps, but I can't make it accurate.

Images: With velocity removed and just +-1 speed increases/decreases. Left is the proposed adjustment to the vertical movement. Right is no adjustment. Is left moving at same speed all the time and right isn't?

If I have a topdown rpg type game. And movement in 8 directions (N/E/S/W/NE/NW/SE/SW) in a 2d game that involves both x and y velocity. I'm finding when i'm moving in the diagonal directions i'm building both x and y velocity and its making my character move faster than they do in straightline directions. Is there a fix for this so no matter what of the 8 I travel its the same speed?

so say...
vel_x, vel_y=0
spd=1

then in my gameloop
vel_x*=0.2
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.
then I add the vel_x to my x sprite position and same with vel_y for my y sprite

How would I address this...? Would I look at btn press actions for when both keys are
held....or limits for when vel_x AnD vel_y are 'high' enough in tandem.... I've done the latter and it helps but I can't make it accurate.

If I have a topdown rpg type game. And movement in 8 directions (N/E/S/W/NE/NW/SE/SW) in a 2d game that involves both x and y velocity. I'm finding when i'm moving in the diagonal directions i'm building both x and y velocity and its making my character move faster than they do in straightline directions. Is there a fix for this so no matter what of the 8 I travel its the same speed?

so say...
vel_x, vel_y=0
spd=1

then in my gameloop
vel_x*=0.2
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.
then I add the vel_x to my x sprite position and same with vel_y for my y sprite

How would I address this...? Would I look at btn press actions for when both keys are
held....or limits for when vel_x AnD vel_y are 'high' enough in tandem.... I've done the latter and it helps but I can't make it accurate.

Images: With velocity removed and just +-1 speed increases/decreases. Left is the proposed adjustment to the vertical movement. Right is no adjustment. Is Left moving at same speed all the time and right isn't?

If I have a topdown rpg type game. And movement in 8 directions (N/E/S/W/NE/NW/SE/SW) in a 2d game that involves both x and y velocity. I'm finding when i'm moving in the diagonal directions i'm building both x and y velocity and its making my character move faster than they do in straightline directions. Is there a fix for this so no matter what of the 8 I travel its the same speed?

so say...
vel_x, vel_y=0
spd=1

then in my gameloop
vel_x*=0.2
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.
then I add the vel_x to my x sprite position and same with vel_y for my y sprite

How would I address this...? Would I look at btn press actions for when both keys are
held....or limits for when vel_x AnD vel_y are 'high' enough in tandem.... I've done the latter and it helps but I can't make it accurate.

If I have a topdown rpg type game. And movement in 8 directions (N/E/S/W/NE/NW/SE/SW) in a 2d game that involves both x and y velocity. I'm finding when i'm moving in the diagonal directions i'm building both x and y velocity and its making my character move faster than they do in straightline directions. Is there a fix for this so no matter what of the 8 I travel its the same speed?

so say...
vel_x, vel_y=0
spd=1

then in my gameloop
vel_x*=0.2
vel_y*=0.2

Then my button presses add/subtract the spd value from their corresponding velocity direction x/y when pressed.
then I add the vel_x to my x sprite position and same with vel_y for my y sprite

How would I address this...? Would I look at btn press actions for when both keys are
held....or limits for when vel_x AnD vel_y are 'high' enough in tandem.... I've done the latter and it helps but I can't make it accurate.