Need a way to calculate the angle and distance:

[XcanadamanX]

don't make it too complicated

besides sin law cannot be used here because it might give you wrong answer is the angle is >180 if i remember right. there are anyways some cases where sin law gives 2 values, so the only one left is cosine law which is bit too complicated to use here (it doesnt give you the wrong answer but why make it the hard way?)

you can have an angle greater than 180 in a triangle? news to me. cosine law is not hard. my code from my smelter:

dist:=Distance(Points[0].x,Points[0].y,Points[1].x,Points[1].y);
x2 := floor((dist * Sin(radians(61))) div sin(radians(78)))
y2 := floor((dist * Sin(radians(41))) div sin(radians(78)))
x2 := x2 + Points[0].x
y2 := y2 + Points[1].y

[mixster]

Since he's finding the angle of a line made up of 2 points, generating a right angled triangle is easier enough to do by creating a 3rd point based on values from each of them.

Anywho, I *think* Special Ed made a very accurate function like this already, so you can try looking into that (part of MSI I think).

Otherwise, I think you need to go over and double check everything you have there.
First of all, you want to find the angle between the minimap centre and your point rather than mainscreen. You then want to change that angle to the mainscreen with a length that relates to the ratio between the mainscreen size and minimap size. If all the values add up right, then it should give a somewhat accurate position.

[Capricorn]

footballjds:
if Point1.x > Point2.x then u have to make the triangle a right angle, instead of a left angle as RM's picture shows.

Uhhh, idk what math class you've been to, but that IS a right angle. A right angle triangle is a triangle with one of three of its angles being 90 degrees. You can rotate that triangle any way you want, and it'll still be called a right angle triangle.

And yeah, you don't have to use a right angle triangle, but since you already have two predetermined points and can create a right angle triangle, you might aswell.

[Zyt3x]

Uhhh, idk what math class you've been to, but that IS a right angle. A right angle triangle is a triangle with one of three of its angles being 90 degrees. You can rotate that triangle any way you want, and it'll still be called a right angle triangle.

I ment a triangle where the 3rd point is to the right

[footballjds]

ive been trying to get the ratio thing working ...
not working atm...
here is the thing, i do NOT need a 3rd point, period.
you can calculate the slope of a line with only 2 points as rs is only 2d, everything that is on a screen is 2d...
and now i need the ratio between the MS and MM... if you know of spec Ed's funct then tell me!!!!!!!!!!1

[almost]

Did no one see my post?

function GetAngle(x, y, x2, y2: integer): Extended;
begin
  Result:= (ArcTan2(y2 - y, x2 - x) * (180 / Pi)) + 90;
  if (Result < 0.0) then  
    Result:= Result + 360.0;
end;

It works 100% accurate.
And its a bit easier than making triangles and stuff.

and now i need the ratio between the MS and MM

I believe when I did my script the way I found it was multiply the distance on the minimap by some decimal number between 1 and 2.
That gives the distance on the main screen from the center.
The number to multiply by is hard to get though, because it's not always the same.
You have to experiment with it a lot and get the best number that works in the most cases.

[footballjds]

lol.... i did see ur post and i tried it

[almost]

And it didn't work?

Also just wondering, are you trying to find something on the main screen using the minimap?
Like if there is a red dot on the minimap and you use the location of that dot on the minimap to find its coords on the screen.

[footballjds]

yes thats what im trying to do...<-------- NEED HELP
i dunno if it worked or not i thnk i t did...<--your funct

[almost]

Oh ok here is a rundown on what I did.
Look on the minimap and get the point that you need to find on the main screen.
Get the distance between the minimap center and that point.
Multiply that distance by that decimal number I was talking about.
Get the angle between the center of the minimap and the point.
The point on the main screen is like this-

x:= Round(Sin(Angle * Pi / 180) * Distance + MSX);
y:= Round(Cos(Angle * Pi / 180) * Distance + MSY);

It comes out very accurate sometimes, but the RuneScape screen shifts all around so sometimes it isn't so accurate.

[footballjds]

and wth is the decimal? and why is it not always the same?
the ratio to size should be, the size of main screen devided by size of minimap.. and that should always be the same no?

[n3ss3s]

RAWR!!! Lecture on it's way!

First, in the virtual world, you can always make a right triangle from 2 points. Remember that and you'll save a lot of effort.

Second, if you go with tangents instead of cosines, you'll be saved from calculating the hypotenuse.

Third, now, how to calculate the angle. tan -1 (tan a) = a.

X = A.x - B.x;
Y = A.y - B.y;
tan a = y/x;
a = tan -1 (tan a).

In SCAR,

[highlight=pascal]
angle := ArcTan2(A.y - B.y, A.x - B.x);
[/highlight=pasca]

Will be -180..180, I think, so you have to do if (angle < 0) then angle := angle + 360 to make it 0..360.


Hold on!

If you're making something that calculates MM points to MS, http://www.villavu.com/forum/showthread.php?t=8680... FFS... I will give you a cookie if you somewhy manage to make it more accurate than his...

[footballjds]

i think i determened how to get the angle O.o
i need to then get that same point on the Main screen

[almost]

The number will never be the same because the runescape screen shifts.
A lot.
And the minimap rotates itself.
I got mine as accurate as it's going to be and it still wasn't perfect.

[footballjds]

http://www.villavu.com/forum/showthread.php?t=8680

nvm anymore... spe Ed beat me

[almost]

His is different than yours and mine too.
There is no trig in it.
So I think you probably could make a more accurate one.

[footballjds]

yeah, maybe we could make one that accounts for mm shift
nvm the nvm keep this going!! and n3ss3s tell me how to account for mm shift!!!!

[almost]

Sythescape.
Never used it but people have told me that the screen never moves and the minimap is locked.

Without sythescape I can only think of one thing that you could to to make it more accurate.
The higher up on the screen your point is, the higher the y coordinate will be off from what it should be.
This is because even with your camera at the highest angle, you aren't looking straight down at the top of your character's head like you are with the minimap.

y:= y - (y * n);

n will be a decimal probably > 0 < 1
So the higher the y coord is, the more will be taken away from it to even it out.

[n3ss3s]

yeah, maybe we could make one that accounts for mm shift
nvm the nvm keep this going!! and n3ss3s tell me how to account for mm shift!!!!

If you mean the offset of the compass and the minimap, you could try making something that gets the real angle from walls... Infact it's been made, but you can search for it by yourself...

[footballjds]

theres gotta be a way............................................... ..........
like use some killer ddtm or something

[footballjds]

If you mean the offset of the compass and the minimap, you could try making something that gets the real angle from walls... Infact it's been made, but you can search for it by yourself...

i mean the offset of the mm and mainscreen....


EDIT: woups, sorry about dble post

EDIT: maybe we should look into this!!!

function GetMMOffset(X1, Y1, X2, Y2: Integer): Extended;     //Wizzup modded by Zeph
Var
   L, I, C: Integer;
   ATPA, gATPA: T2DPointArray;
   P, P2: TPoint;
   B: TBox;
   Ps: TPointArray;
Begin
  FindColorsTolerance(Ps, RGBToColor(255, 255, 255), X1, Y1, X2, Y2, 50);
  Result := -1.0;
  If High(Ps) = -1 Then
    Exit;
  SortTPAFrom(Ps, Point((550 + 703) / 2, 0));  // Sort it from the center.
  ATPA := SplitTPAEx(Ps, 1, 0); //horizontal lines

  SortATPASize(ATPA, True);     // longest 'line'.
  L := High(aTPA);
  If L = -1 Then
    Exit;

  SetLength(gATPA, L + 1);
  C := 1;
  gATPA[0] := aTPA[0];
  P := MiddleTPA(aTPA[0]);        // get middle of the line.

  For I := 1 To L Do
  Begin // this loops adds any points that are in a dist of 10 pixels.
        // if vert, then x, hori then y (A wall isn't straight.)
    If Length(aTPA[I]) < 4 Then
      Continue;
    P2 := MiddleTPA(aTPA[I]);
    If Abs(P.Y - P2.Y) < 10 Then
    Begin
      gATPA[C] := aTPA[I];
      C := C + 1;
    End;
  End;
  SetLength(gATPA, C);
  SetLength(Ps, 0);

  Ps := MergeATPA(gATPA);   //Combine all the points. within 10pix
  B := GetTPABounds(Ps);
  SortTPAFrom(Ps, Point((B.X1 + B.X2) / 2, 0));   // sort from center

  SetLength(ATPA, 0);
  ATPA := SplitTPA(Ps, 3);  // split dist three, the left over walls
                            // were all in Ps, and now we split them again.

  SetLength(Ps, 0);
  SortATPASize(ATPA, True);   // longest wall.

  Ps := ATPA[0];
  L := High(Ps);   //angle getting
  Result := ArcTan2(Ps[L].Y - Ps[0].Y, Ps[L].X - Ps[0].X);
  while (Result > Pi / 2) do
    Result := Result - Pi;
  while (Result < -Pi / 2) do
    Result := Result + Pi;
  {$IFDEF DEBUG} WriteLn('OffsetAngle: ' + FloatToStr(Degrees(Result))); {$ENDIF}
End;