Need help on Matrixes(Matrices) and/or Coordinates in the .THN

Gisteron

for instance: line 2179
there a path animation of a large transport starts (the first transport of all crossing the screen. as you see in the flags, the spaceship is oriented strictly to the path itself, meaning, it faces the direction of flight. to turn it around you need to make the front not the NEG_Z_AXIS but the Z_AXIS. to make it move in the opposite direction you have to change the start and stop percentages, so they start on the way’s end and stop on its beginning.
in this case you have not to change any orientations. however, some ships in the scene do not have the orientation flag but you can add it and look what it results in, experimenting with the front axis and get what you need.

wasabitoy

@ Gisteron

I did what you just said to me and it worked. Thanks.

start_percent=1
stop_percent=0
front=Z_AXIS

But again, how can I bring the ship near to my screen and then stop at my front screen?

Gisteron

you have to look for motion path entities and play with the keyframe coordinates (the longest line of those). the events you edited refer to their names so you can search for the ones you need.

wasabitoy

That is what my problem is - the Coordinates or the Matrixes(matrices).

I don’t know how to play with it cause when I change the numbers, the ship will not show.

It is not a big ship it is only a small freighter by the way.

And I already know that long key-frame that you are saying on putting the coordinates. Below and end of the MOTION PATH.

So please can you help me with the exact coordinates of getting my ship in front of my screen and then stop in front of me.

Just give me the coordinates. Please help me with this.

Thanks.

Gisteron

it entirely depends on where your camera is and where it faces… you don’t have to edit any matrices for what you are asking here. editing the keyframe coordinates is pretty enough. the format is like this

path_data="OPEN,
{<x-coordinate#1>, <y-coordinate#1>, <z-coordinate#1>},
{1, 0, 0, 0},
{<x-coordinate#2>, <y-coordinate#2>, <z-coordinate#2>},
{1, 0, 0, 0}, "</z-coordinate#2></y-coordinate#2></x-coordinate#2></z-coordinate#1></y-coordinate#1></x-coordinate#1>
```the orientation of the ship applies to the path with the right flag, so you don't have to care about any matrices.

wasabitoy

Thank you for the information you gave me.

Well I am using the City Space (gasminer3.thn) file - so the camera is facing and located the same as the original.

OK, coordinates. No more matrices.

But I am still noob on this coordinates cause I don’t know how to do it and play with it.

So I already gave you where my camera is located. The same as the original camera from the gasminer3.thn. OK?

Please help me now on the coordinates which will bring my ship at the front of my screen and then stop near the camera.

Thank you.

NeXoSE

Hey Gisteron, Thanks, you also resolved my question. But what the means of the “{1, 0, 0, 0}”? I see some object turning on path in the thn, how it be done?

Gisteron

dunno about the 1, 0, 0, 0 matrix… maybe adoxa can put in some light.
for the turning: if you have no orientation flag on the motion activator in the events, the object keeps his orientation as it is in the beginning (defined by the ori matrix in the entity). there is a rotation event, it looks somewhat like this:```
{
<starting time=“” in=“” secs=“” -=“” float=“”>,
START_SPATIAL_PROP_ANIM,
{
“<entity name=”“>”
},
{
duration=<duration in=“” secs=“” -=“” float=“”>,
target_type=ROOT,
spatialprops={
axisrot={
<degrees -=“” float=“”>,
<[X, Y or Z]AXIS or NEG[X, Y, or Z]_AXIS>
}
}
}
},</degrees></duration></entity></starting>

NeXoSE

Got it. Thanks!

adoxa

dunno about the 1, 0, 0, 0 matrix…

At a guess, it would be a quaternion specifying the rotation.