xyz Momentum v1.0

[Moderator]

12th Dec 2015
IcemanBo: For long time as NeedsFix. Rejected.

19:56, 8th Apr 2015
IcemanBo: Will wait for your next update. Read posts in thread.

 

[NightSkyAurora]

~Reserved

Next update:
2 Examples on how to adjust Z velocity or XY velocity respectively to land on the predefined point.
Remove collision size
Set movement speed to 0
Features that make it possible to use the system as a missile system

 

[Noobsmoke]

-Don't pause and unpause the jumper
-Turn off its collision while jumping

 

[DD_legionTN]

• Custom script: if CountUnitsInGroup(udg_MomentumGroup) == 0 then
• Trigger - Turn on Momentum loop <gen>
• Custom script: endif
• Set Cus = (Custom value of (Triggering unit))
• Unit Group - Add UDexUnits[Cus] to MomentumGroup

Just want to know why when the unit group contain no unit then turn on the trigger?

Ignore that my mistake...

EDIT : Well please add comments text about the configurable parts and explain what do the variables do as well as explain the trigger part.

Special effect, damage type, attack type, attack range, attack damage, leap range should all be configurable.

Besides that, you should also disable the leap spell if the unit is leaping (wouldn't that strange if you can leap again in the air?)

 

[Kazeon]

Your variable namings are way too specific for global variables, like Cus, XCur, LandPoint, LandEvent, etc. There is a good chance those name will conflict with other user-defined variables in their maps. Please, fix them.

 

[NightSkyAurora]

-Don't pause and unpause the jumper
-Turn off its collision while jumping

I didn't pause the unit. I will remove collision size

EDIT : Well please add comments text about the configurable parts and explain what do the variables do as well as explain the trigger part.

Special effect, damage type, attack type, attack range, attack damage, leap range should all be configurable.

Besides that, you should also disable the leap spell if the unit is leaping (wouldn't that strange if you can leap again in the air?)

More comments? Alright I'll work on that.

Special effects and damage are already configurable. I'm not sure how to put damage/attack type in a variable. For your leap range idea - I'll reply on that in the reserved post.

The spell was just an example to show you how to use the system. You can easily tune the system by disable it in casting trigger and enable the spell in the land event. Thanks for posting .

Your variable namings are way too specific for global variables, like Cus, XCur, LandPoint, LandEvent, etc. There is a good chance those name will conflict with other user-defined variables in their maps. Please, fix them.

Roger that.

 

[Tank-Commander]

To make it launch (and land) on a fixed point using momentum you can use the following formula:
ZVelocity = (((TargetZ + GetLocationZ(Target)) - StartHeightZ) / (TimeToImpact / TimerSpeed)) + ((Gravity / TimerSpeed) * TimeToImpact) / 2

- TagretZ is how high you want to be at the end (0 in your case)
- StartHeightZ being the Z height of the jumper (Flying Height + LocationZ + StartHeight), 0 + LocationZ + 0 for a jump system I imagine
- TimeToImpact will be the distance to travel / Momentum (Get the distance you're going to travel and then divide it by the speed (squareroot(Xvel² + Yvel²) This should end up being the time it'll take in seconds
- TimerSpeed is the speed at which the loop operates (0.03)
- Gravity is well, gravity
- If you're still getting problems, depending on how your system works dividing by (TimeToImpact/TimerSpeed) at the end or some variant of it can fix the issues, though I don't see why you would have this issue (I sometimes get the issue because of how I store the velocities)

 

[NightSkyAurora]

I'm not sure if I've done something wrong but the Caster stays flat on the ground. This is what I've done:

• Set xyz_Distance = (Distance between CastPoint and TargetPoint)
• Set xyz_XVel[Cus] = (xyz_XVel[Cus] + (((Square root(xyz_Distance)) / 1.40) x (Cos((Angle from CastPoint to TargetPoint)))))
• Set xyz_YVel[Cus] = (xyz_YVel[Cus] + (((Square root(xyz_Distance)) / 1.40) x (Sin((Angle from CastPoint to TargetPoint)))))
• Custom script: set udg_xyz_Time = udg_xyz_Distance/SquareRoot((udg_xyz_XVel[udg_Cus]*udg_xyz_XVel[udg_Cus]) + (udg_xyz_YVel[udg_Cus]*udg_xyz_YVel[udg_Cus]) )
• Custom script: set udg_xyz_ZVel[udg_Cus] = (((0 + GetLocationZ(udg_TargetPoint)) - 0) / (udg_xyz_Time / 0.03)) + ((udg_Gravity / 0.03) * udg_xyz_Time) / 2

 

[Tank-Commander]

See the last point on my post, you can try dividing the entire number (ZVel) by the TimerSpeed or multiply by (TimeToImpact/TimerSpeed) and that should probably fix it - there are a few other ways if you continue to be unable to do it.

 

[NightSkyAurora]

Nope it didn't work. I could however find a way to make landing accurate but I don't know how to take the Z difference in account.

• Custom script: set udg_xyz_ZVel[udg_Cus] = udg_xyz_Time*udg_Gravity/-2

Also I've found a website with quite useful equations:
ajdesigner

 

[Tank-Commander]

Well I'll give you the base formula for which the one I gave earlier is derived.
You start with your suvat equation for s (displacement)
s = ut + (at²)/2
applying to your case:
where s is the difference in z height, u is the initial z velocity, a is the acceleration and t is how long until it hits the target
rearrange to find u:
ut = s - (at²)/2
u = (s - (at²)/2)/t
Perhaps with that you'll be able to better get the formula you want for it to work, since the one I gave was an in-practice example of how it works (and as stated, depending on how your system handles it, changes the specifics of the formula)
(keep in mind it's important to remember which direction is up and down in terms of the equation, if gravity is negative (down) then when calculating the difference in height. If the point is lower then the displacement (s) should also be negative, I notice you made this mistake when you were trying to use the one I gave you - I should've pointed that out but only noticed it now)

 

[NightSkyAurora]

Finally everything works smoothly. Thanks Commander, I'll give you credit in this system.