Graal Mode 7

[zokemon]

Originally Posted by Inverness

We await Stefan's input on the subject.
THIS IS A CUE<- THAT IS A CUE

^ THAT WAS A CUE ^

IT WAS A CUE

I agree.

[Googi]

Originally Posted by xXziroXx

Stefan, would this be possible to program into the Graal engine?

"Program into"? I don't think the Mode 7 source code is just floating around on the internet.

[xXziroXx]

Originally Posted by Googi

"Program into"? I don't think the Mode 7 source code is just floating around on the internet.

Of course not. I meant if it was possible to program a similar system in Graal, with the same functions.

[Inverness]

You don't need source code, there is already an explanation of what Mode 7 does. You have your end result right there, now you just need to figure out how to get to it.

I'm sure you already know this Googi.

[Tyhm]

Mode 7:
Take the image.
Put it on a polygon (skin).
Skew the polygon.
Done.

The interesting math is for moving diagonally, and having the map keep track of where you are...that's matrix math, that is. "For every step you take back, move one bit closer to the center. For every step you take forward, move one bit further from the center."

[Angel_Light]

Dusty that is so cool. Just like z3 map oh please tell me how you did it? Like how did you get the players head to move properly with that perspective, I'm completely clueless with scripting with matrices. XD

[Inverness]

Uh you don't really need matrices. Here is example of drawing a tilted polygon.

PHP Code:

with (findimg(200)) {
  layer = 4;
  dimension = 3;
  polygon = {
    50, 50, 0,
    600, 50, 0,
    600, 600, 200,
    50, 600, 200
  };
  image = "map.png";
  mode = 0;
  alpha = 0.75;
  red = 1;
  green = 1;
  blue = 1;
} 


[Angel_Light]

right right I know how to do that but what I need to know is how he got the players head to move accordingly with the tilted polygon. :P

[DustyPorViva]

Actually I used 2 dimensions. Doing what you did won't skew the image properly.
You have to alter the x dimensions accordingly. Here is what I used in my script, though it's probably embarrassing math-wise.

PHP Code:

  this.mapsize=screenheight*.75;
  this.mappos={(screenwidth-screenheight*.75)/2,(screenheight-screenheight*.75)/2};

  with (findimg(200)) {
    dimension=2;
    polygon={
      thiso.mappos[0]+25,thiso.mappos[1],
      thiso.mappos[0]+thiso.mapsize-25,thiso.mappos[1],
      thiso.mappos[0]+thiso.mapsize+150,thiso.mappos[1]+thiso.mapsize,
      thiso.mappos[0]-150,thiso.mappos[1]+thiso.mapsize
    };
    image="map.png";
    layer=4;
    mode=1;
    alpha=.9;
  } 


EDIT: Oh... as far as player detection... I don't advise doing what I did. I suggest learning some trig and scripting a fully 3D polygon and learn how to 'place' something on it. It would be much more versitile.
When doing stuff like putting the player's horizontal position on the map, I use the basic formula (player.x/gmap.width)*mapwidth. What I did for this map is determine the mapwidth depending on the player's position vertically. I use a base mapwidth of the widest part of the map(in this case, the bottom) and subtract ((player.y/gmap.height)*mapheight)*(widestmapwidth-skinniestmapwidth).

If that makes sense. Either way, I don't advise doing it that way. Also, it seems the script doesn't work exactly the way I wanted. The position seems off, but I think it's because of the way Graal maps the image onto the polygon(as you can see in the screenshot, the bottom right is stretched horizontally a lot more than the top-right).

I wanted to do this script using eulerrotation... but it doesn't seem to work and I can't find anyone who knows how to use it.

[Angel_Light]

sexy

[Inverness]

How would doing what I did not skew the image properly? Its showing in 3 dimensions with a tilt so you see the image at an angle. I'm confused.

[DustyPorViva]

Because all it does is alter z on a graal-relative scale. Meaning it just raises the bottom of image. It doesn't change the image like you think it would in a 3D environment. Anyways, I tested what you posted and it just made the image shrink vertically. That's why I wanted eulerrotation... so things like this would be simple.

[Inverness]

I still don't understand you, it changes the image exactly how I would expect in a 3D environment.

[Angel_Light]

But the Graal Enviorment isnt truly 3d

[Inverness]

Originally Posted by Angel_Light

But the Graal Enviorment isnt truly 3d

Neither is your monitor for your computer. And how does that make a difference?