The GK bow

[Gman4pwnu]

its cool, im wondering what commands are needed to get somethin like it.

I know this.angle=getangle(mousex-playerx,mousey-playery); gives you the angle the mouse is pointin at, but how do I get like to power it needs?

Btw, i dont know any sine or cosine, havn't taken trig yet. Or whatever sine and cosine are taught in

[Dach]

use shoot, it's in newfeatures and most updated commands.rtf, but if you don't get it search the forums I'm sure it's been explained in detail before
Also check out the arrow gani in Graal shop and the image to see how that works. Well that's about it other than handing you an algorithm, see how far you get.

[Gman4pwnu]

I know how to use shoot. I just need an algorithm for the z and the power to match mouse location.

[Python523]

Problem solving is a valuble skill; learn it.

[Goboom]

Try getting from point A to point B before comming here (point C).

[Dach]

Originally posted by Gman4pwnu
I know how to use shoot. I just need an algorithm for the z

you mean the z value you give in the shoot function after the x and y? that is the player's z, it's part of the initial position of your projectile

and the power to match mouse location.

Ouch, that requires knowledge of some (basic) physics, I won't give this to you since most likely you'll just copy and paste and that takes all the fun out of me teaching it to you , meh there have been some decent bow scripts posted on here anywho

hmm, I just realized I never finished my physics tutorial on projectiles... darn

[Duwul]

I remember seeing an arrow game you made where you click the target and it shot the arrow at it. You had an equation for the power, it was too confusing for me at the time. =X

[ZeLpH_MyStiK]

I think he meant the z angle when he mentioned 'z'. Well anyways, I doubt GK bows have different angles so you can set the z to a constant angle, something like pi/6. The power is sort of hard to explain...i'll try to come up with an easy way of explaining it later =\

[Dach]

Originally posted by ZeLpH_MyStiK
I think he meant the z angle when he mentioned 'z'. Well anyways, I doubt GK bows have different angles so you can set the z to a constant angle, something like pi/6. The power is sort of hard to explain...i'll try to come up with an easy way of explaining it later =\

pi/4 will give you the greatest disance on level ground

that power algorythm I made was a bit more complicated than I inititially thought it would be... ohwell

[WanDaMan]

You know some stuff, but you don't know how to do that?

[Polo]

(Note: I don't have Graal installed here, so I cannot check the definition of power within the shoot command. As a result i'm giving pointers to 2 solutions, so pick whichever one is relevant for the shoot command (ie: whether power is launch velocity or distance to travel))

Solution One - Velocity Based
If power is related to the speed at which the projectile is launched, then the distance travelled if i remember correctly would be proportional to power^2. As I dont know how close the Graal physics are to real life, I can't verify that, nor am I able to give you any constants, as I do not know what constants graal uses internally. You can rearrange to find power from distance fairly easily.

Solution Two - Distance Based
If the power is related to how far you want it to travel, then you can use a rearrangement of the pythagorous theorem to calculate the distance.

If you still need help after this, send a Forum PM, or drop me an e-mail.

[WanDaMan]

We was doing about Velocity In science today, It's interesting.

[XxDarkrazorxX]

newfeatures2004-V3:

- new script variable 'gravity': when you
change that variable then the behaviour
of projectiles changes - by default the z attribute
of a projectile is decreased by 2 each second
(0.1 each frame); if you increase the gravity,
then the arrows fall down faster, if you decrease
the gravity then arrows fly longer; if you
decrease the gravity and shoot it in a low angle
(between 0 and 0.5) you can easier simulate
pistoles or guns;
don't forget to change the gravity variable on both
client and server side

[Dach]

Originally posted by XxDarkrazorxX
newfeatures2004-V3:

- new script variable 'gravity': when you
change that variable then the behaviour
of projectiles changes - by default the z attribute
of a projectile is decreased by 2 each second
(0.1 each frame); if you increase the gravity,
then the arrows fall down faster, if you decrease
the gravity then arrows fly longer; if you
decrease the gravity and shoot it in a low angle
(between 0 and 0.5) you can easier simulate
pistoles or guns;
don't forget to change the gravity variable on both
client and server side

shouldn't use that just to affect how far a projectile goes
it is meant more for shooting in areas of different gravity (obviously) or when shooting something heavy (as in pertaining to the air resistance really, like a cannonball or something)

[Polo]

Originally posted by Dach
...or when shooting something heavy (as in pertaining to the air resistance really, like a cannonball or something)

Actually a cannonball doesn't accelerate towards the ground any faster than say, a small pebble. The density of an object doesn't affect its falling speed.

Sorry... but I had to be fussy :P