Need help about parabola projectile

[axleion]

Hello, I would like to state the problem first.

Problem

Before the rollback in Spells section, there was 2 spell whom I forgot who created it which was in the Spells database, that now is lost and I can't find it anywhere.
Both spells are made in JASS as I remember those spells within my time of learning JASS

1st spell is a spell which launches several projectiles which moves in parabolic to target point. movement is shown with this diagram.
The projectile in the spell testmap is made with Breath of Frost model.

Side View

From first person view

2nd spell is a spell which launches several projectiles which moves in parabolic or circular movement too but in XY plane. I remember it has a homing feature that has a miss probability if target moves from initial position.

I can't describe how 2nd spell move in diagram because it has some random starting angle.
I remember the 2nd spell is made by Felfox as I once imported it in my map and write in the credits section. but that map of mine is protected and the unprotected version is lost in my old PC.

this is the link of the map, its an old map from 1.18 version. so it might need version switcher to view. the 2nd spell is the Shadow Missile from Shadowless Hero.
http://www.hiveworkshop.com/forums/...4d62f17e85d49507bcadcda94&dateline=1354694712

I would like to ask if anyone has a copy of the spell testmap or know any link regarding the 1st spell and 2nd spell.
or can help me with the calculation of 3D parabola for the projectile.

 

[Ofel]

Try this : Missile System Arcs GUI by Kingz

 

[Lender]

x1 = start point x coord
y1 = start point y coord
a = end point x coord
b = end point y coord
A = a - x1 (max distance vector's x coord )
B = b - x2 (max distance vector's y coord )
x2 = current position x coord
y2 = current position y coord
X = x2 - x1 (traveled vector's x coord )
Y = y2 - y1 (traveled vector's y coord )

maxD = total distance --> squareroot( A² + B² )

travD = traveled distance --> squareroot ( X² + Y² )

maxH = maximum height "maximum possible Z value" (defined by you)

calculation of Z

Z = -(maxH * (travD-(maxD/2))² / (maxD/2)² ) + maxH

this is how you calculate the parabola while max Z value can be set.

same on the XY arcing

XY arcing = -(maxArc * (travD-(maxD/2))² / (maxD/2)² ) + maxArc

if XY arcing is 23 for example
define a unit vector with A,B or X,Y

unit vector ( A/maxD ; B/maxD )

make the normal vector of it nv( B/maxD ; -A/maxD ) or nv( -B/maxD ; A/maxD )

make the arc vector av( 23*B/maxD ; -23 * A/maxD )

Modify the projectile's current X and Y with the arc vector's coordinates

 

[axleion]

thanks for the response, Ofel.
though I would prefer coordinate calculation approach than location,
I think I can deduce the logic and calculation step from that,

thanks Lender,
I will try to understand each part in your post first.

I still hope for other answer, especially from those who have the old spell testmap.