[Evil_Trunks]

Originally Posted by ApothiX

What does the 'i' variable represent?

vi, it stands for initial velocity, i was thinking i should have clarified this but i didn't for some reason...

Originally Posted by ApothiX

Only the shoot command, or the place where you calculate power is really required.

you really sort of need to have taken physics to understand how to solve this

i didn't simplify any of the stuff that could be simplified

NPC Code:

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this.power = ( ( this.dist * -0.1 ) / ( 2 * cos(this.zangle)  * -1 * sin(this.zangle) ) ) ^ 0.5;

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you will probably want to offset your destination x y by -1.5 or something, since projectiles have a width/height of 48x48

otherwise the top left corner will land at the coordinates you used (i think)


here is the information I used, by the way, taken from newfeatures
(actually someone pasted it into the #gscript channel)

Projectiles are easy to use and don't take a lot of bandwidth because only
the shooting of the projectile needs to be sent, the movement is calculated on
the different computers. The projectile is flying like a heavy object thrown
through the air: the horizontal movement speed keeps the same (moves
horzspeed=cos(zangle)*speed tiles all 0.05 seconds), the vertical speed is
initialized as vertspeed=sin(zangle)*speed and is decreased by 0.1 all 0.05 seconds;
then the new position (calculated all 0.05 seconds) is
newx = x + cos(angle)*horzspeed, newy = y - sin(angle)*horzspeed,
newz = z + vertspeed

I found this file where I saved my work

Originally Posted by work

vertical

Vi = vertspeed = sin(zangle)*speed [tiles / 0.05 secs]
acceleration = -0.1 [tiles / 0.05 secs ^2]
Vf = 0
time = ? [0.05 secs]
Vf = Vi + at
t = ( Vf - Vi ) / a

horizontal

v = horzspeed = cos(zangle)*speed [tiles/ 0.05 secs]
d = distance [tiles]
t = ? [0.05 secs]
d=vt
t = d/v

combo

d/v = 2 * ( Vf - Vi ) / a
dist / ( cos(zangle)*speed ) = 2 * ( 0 - sin(zangle)*speed ) / -0.1
dist * -0.1 = 2* ( cos(zangle)*speed ) * ( 0 - sin(zangle)*speed )
dist * -0.1 = 2* cos(zangle) * speed ^ 2 * -1 * sin(zangle)
speed = ( ( dist * -0.1 ) / ( 2 * cos(zangle) * -1 * sin(zangle) ) ) ^ 0.5

Stefan uses speed to say power in the newfeatures explanation