Always - move object Y-1 is to slow, and always - move object Y-2 is to fast. help

[Outcast]

I have water chasing the player up the level in my game, but I have problems adjusting the speed of the water.

I have tried

Always - Y( "Water" )-1 - But this makes the water go to slow

Always - Y( "Water" )-2 - Now its going to fast

So what is the easiest and best way to be able to adjust the speed to what I want? I want to use a speed that is dependent on the frame rate and not the timer.

[oasuke]

Isn't the timer based on what the frame rate is though? If you have a frame rate of 100, the water will move much more quickly than at 60.

You can try using floats. Name two alt.values "FloatY" and "Yspeed".

Start of Frame
--> Set FloatY("Water") to Y("Water")

\\This sets the initial FloatY to the position of the water. If you don't do this, then the water's position will be where ever it was in the frame.

Always
--> Set FloatY("Water") to FloatY( "Water" )+Yspeed( "Water" )
--> Set Y Position("Water") to FloatY("Water")
--> Set Yspeed("Water") to 0.5 (Or whichever value you want)



This way you can use decimals to give more accurate speeds. Remember MMF2 can only use integers for positions in the expression editor, so you have to do that workaround. (Ie, you can't do "Set Y position to 0.5")

[gkinfinity]

Yep, just do what oasuke said. Keep in mind that if you want the speed of the water to be constant but just want the speed to be in between 1 and 2 you only need one alterable value (lets call it 'YPos').

Start of Frame
--> Set YPos("Water") to Y Position("Water")

Always
--> Sub 1.5 from YPos("Water")
--> Set Y Position("Water") to YPos("Water")

[Outcast]

Isn't the timer based on what the frame rate is though? If you have a frame rate of 100, the water will move much more quickly than at 60.

You can try using floats. Name two alt.values "FloatY" and "Yspeed".

Start of Frame
--> Set FloatY("Water") to Y("Water")

\\This sets the initial FloatY to the position of the water. If you don't do this, then the water's position will be where ever it was in the frame.

Always
--> Set FloatY("Water") to FloatY( "Water" )+Yspeed( "Water" )
--> Set Y Position("Water") to FloatY("Water")
--> Set Yspeed("Water") to 0.5 (Or whichever value you want)



This way you can use decimals to give more accurate speeds. Remember MMF2 can only use integers for positions in the expression editor, so you have to do that workaround. (Ie, you can't do "Set Y position to 0.5")

Thanks!

One question though, is there a reason why I should have the last event?
--> Set Yspeed("Water") to 0.5 (Or whichever value you want)

Is it not as good to just change this value to what I want when I create it?

[LB]

You can set it when you create the object, but the alterable values in the frame editor only take integers

[King_Cool]

Im kindof in a hurry, so i havent had time to read everyones post
...
Outcast, i understand your problem

- Give Water an Alterable value called MoveY_
- Instead of 'allways set WaterY to WaterY -1' do 'always set WaterY to WaterY + MoveY_'
- do 'Always add 1.5 ( or 1.25 or 1.75 or whatever you want ) to MoveY_'

This way Water can move at speeds wich are inbetween 1 and 2 pixels per frame

[Francois]

You could also use and every condition instead of always...

[Corlen]

Being able to set the position to a floating point value is something I'm hoping Clickteam adds to MMF3... or perhaps MMF2, if they can. I know it can be done, but I don't know how hard it would be.

[King_Cool]

Oh no, im so sorry Corlen, i must have been in too much of a hurry.
Please disregard my last post.
...
This is how it can be done ( see .mfa attachment "RisingWater" ).

Water object has 3 values:
- OriginalPositionY_
- MoveY_
- MovementSpeedY_

The .mfa contains 2 conditions and 3 actions.