Messages

1

Advanced Technical Forum / Re: Is there a function that tints the *entire room* (background)

« on: 19 Jun 2018, 21:36 »

Just re the candlelight code:
1. if the player picks up one of these items, then uses (and loses) it elsewhere, it will appear back in the room (unless that's what you want, of course)
2. distance in a 2D coordinate system:

Code: Adventure Game Studio

1.   float dx = IntToFloat(mouse.x - Obj.X), dy = IntToFloat(mouse.y - Obj.Y);
2.   int dist = FloatToInt(Math.Sqrt(dx * dx + dy * dy), eRoundNearest);
3.   int trans = (dist <= 100) * dist + (dist > 100) * 100; // the multiplication casts the bools to 1 or 0

2

Beginners' Technical Questions / Re: Saving to previous room

« on: 18 Jun 2018, 19:32 »

It sounds like all you need to do is disable manual saving and simply call SaveGameSlot(1); in on_event/eEventBeforeFadein. This way the one savegame always contains the current room's initial state and there's no need to reset anything in the first place. This should solve all three points.

3

Advanced Technical Forum / Re: Strategic turn based with stealth mechanic - SOLVED

« on: 11 Jun 2018, 19:40 »

The only way to get a division by zero is if the player and enemy have the same coordinates exactly.
After

Code: Adventure Game Studio

1.   float l = Math.sqrt(dx * dx + dy * dy);

insert this:

Code: Adventure Game Studio

1.   if (l == 0) return true;

4

Advanced Technical Forum / Re: Strategic turn based with stealth mechanic - SOLVED

« on: 11 Jun 2018, 16:33 »

It's simpler to do this with math. Afaik you already have a distance check implemented, so all that's left is the angle.
If you have the enemy's line of sight as degree int angle, you can get the normalized vector like this:

Code: Adventure Game Studio

1.   float af = Maths.DegreesToRadians(IntToFloat(angle));
2.   float ex = Math.Cos(af), ey = Math.Sin(af);

The vector towards the player is again
 

Code: Adventure Game Studio

1.   float x = IntToFloat(enemy.x), y = IntToFloat(enemy.y);
2.   float dx = IntToFloat(player.x - enemy.x);
3.   float dy = IntToFloat(player.y - enemy.y);
4.   // normalize vector
5.   float l = Math.sqrt(dx * dx + dy * dy);
6.   dx /= l;
7.   dy /= l;

You can now calculate the dot product:

Code: Adventure Game Studio

1.   float dot = dx * ex + dy * ey;

If the two vectors point in the same direction, this product is exactly 1. If they point 90 degrees apart, it's 0. In other words, all you need to check is if (dot > 0.5) and the player is inside the cone. Use a value closer to 1 for a narrower cone.

However I'm guessing you also want to display the cones for the player to see? You can for instance draw them on a semi-transparent, not clickable GUI, again using some Math and DrawTriangle()

5

Advanced Technical Forum / Re: Strategic turn based with stealth mechanic

« on: 10 Jun 2018, 00:41 »

Was a typo:

Code: Adventure Game Studio

1.     float l = Math.sqrt(dx * dx + dy * dy);

6

Advanced Technical Forum / Re: Strategic turn based with stealth mechanic

« on: 09 Jun 2018, 16:10 »

Ok, so pixel-based? In that case you need to "walk" along the line from enemy to player and check every (or every other) pixel for being a wall, using a loop. Something like

Code: Adventure Game Studio

1. bool SightBlocked(float fx, float fy) {
2.   int x = FloatToInt(fx, eRoundNearest);
3.   int y = FloatToInt(fy, eRoundNearest);
4.   // check if room pixel x, y is blocking
5.   return GetLocationType(x - GetViewportX(), y - GetViewportY()) == eLocationObject;
6. }
7.  
8. bool IsVisibleTo(this* Character, Character* enemy) {
9.   float x = IntToFloat(enemy.x), y = IntToFloat(enemy.y);
10.   float dx = IntToFloat(this.x - enemy.x);
11.   float dy = IntToFloat(this.y - enemy.y);
12.   float l = Math.sqrt(dx * dx + dy * dy);
13.   // check every 2 pixels
14.   dx /= l / 2.0;
15.   dy /= l / 2.0;
16.   int steps = FloatToInt(l / 2.0, eRoundDown);
17.   for (int i = 0; i < steps; i++) {
18.     x += dx; y += dy;
19.     if (SightBlocked(x, y)) return false;
20.   }
21.   return true;
22. }

Now you can use

Code: Adventure Game Studio

1.   if (player.IsVisibleTo(cPatrol1)) ...

7

Advanced Technical Forum / Re: Strategic turn based with stealth mechanic

« on: 09 Jun 2018, 11:57 »

There's no one answer to this question. What exactly do you mean by "near complex"? What are you using for walls?
Turn-based often also means grid-based, which means walls are along grid lines. According LoS algorithms are all over the internet.

8

Beginners' Technical Questions / Re: How can I insert a movie file into my game?

« on: 08 Jun 2018, 09:20 »

Did you check the Scripting -> Multimedia section of the manual? http://www.adventuregamestudio.co.uk/manual/ags67.htm#PlayVideo

9

Beginners' Technical Questions / Re: Google Paint transperancy help

« on: 08 Jun 2018, 01:29 »

If you use a single color for transparency, you can tell AGS which corner to grab it from during importing the sprite.
Or you use alpha transparency, in which case the image needs to be saved as PNG, with an alpha channel.

What's google paint? I googled it but didn't find anything besides some Chrome apps.

10

Beginners' Technical Questions / Re: Choose player character name at the start of the game

« on: 07 Jun 2018, 07:59 »

Usually, when a game crashes, you're presented with an error message... why not go ahead and paste that into your post, verbatim?

11

Advanced Technical Forum / Re: Flat Shaded 3D models

« on: 01 Jun 2018, 12:49 »

Yeah, you need to turn the mouse coordinates into 3D camera screen coordinates, unproject them into the world, then intersect the line camera-mouse with all triangles. Then find the closest one of all that get hit.

12

Advanced Technical Forum / Re: Flat Shaded 3D models

« on: 31 May 2018, 21:16 »

It's bugged (no visibility check, perspective is weird, and rotating camera opposite way around makes triangles appear all over the screen).

You can solve the 1st and 3rd issue with frustum culling, btw. Welcome to hell

13

Advanced Technical Forum / Re: Flat Shaded 3D models

« on: 31 May 2018, 17:24 »

I'll necro-post again because I was asked for the source and saw you asking for it, too.
Here it is: https://drive.google.com/open?id=1CpA2newcPHNFaTtFmOCgXak2hX1b1pcs

14

Beginners' Technical Questions / Re: Text doesn't change size after changing the resolution of the game

« on: 25 May 2018, 13:25 »

Some small fonts can be found here: https://www.dafont.com/bitmap.php

15

Beginners' Technical Questions / Re: So has a kyr system been created?

« on: 24 May 2018, 11:21 »

I didn't read the last few posts so in case this doesn't apply, please ignore.

There's on_event / eEventMouseGUIUp/Down, which I've used in the past to handle arbitrary GUI clicks.

16

Advanced Technical Forum / Re: Cannot playtest or build exe. Error: "The game engine does not ..."

« on: 19 May 2018, 16:32 »

1. Deactivate Windows Game Explorer integration in General settings.
2. Try compiling again. If you get an error about how saving/generating the exe file failed, just try again.

17

Beginners' Technical Questions / Re: Overhotspot label text goes off screen when mouse cursor is inventory item

« on: 18 May 2018, 02:19 »

Part of the problem is that the links don't lead to the actual manual entry because for some reason the anchor in the link is turned to lowercase. Whenever I link to a command in the online manual I have to fix the anchor part.

18

Beginners' Technical Questions / Re: Overhotspot label text goes off screen when mouse cursor is inventory item

« on: 18 May 2018, 02:07 »

Crimson is talking about GUI.ZOrder, a property you can set in scripts or the editor to determine which GUI covers which. Just change your text label GUI's .ZOrder value to a higher one than the VerbCoin GUI's and it will appear on top of the coin.

19

Beginners' Technical Questions / Re: Overhotspot label text goes off screen when mouse cursor is inventory item

« on: 17 May 2018, 21:49 »

If you're using exactly what you've posted here, you forgot to replace all instances of x and y with Posx and Posy. Given that you already have x and y, that can lead to weird results. (lines 8 and 11 of your snippet)

As for GetTextWidth, if you're using @OVERHOTSPOT@ as label text, I'm not sure using GetTextWidth will work as expected. A better solution is to do something like this:

Code: Adventure Game Studio

1.   // before calculating the position, set label and GUI width based on text
2.   String ln = Game.GetLocationName(mouse.x, mouse.y);
3.   lblOverhotspot.Text = ln;
4.   lblOverhotspot.Width = GetTextWidth(ln, lblOverhotspot.Font) + 2; // small error margin to ensure text doesn't wrap
5.   gOverhotspot.Width = lblOverhotspot.Width; // assuming label's x coordinate on GUI is 0
6.   // gui position calculations here

If you want the GUI to be centered on the mouse cursor horizontally, but the gui's width keeps changing, you cannot use a fixed value.
Instead of

Code: Adventure Game Studio

1.   int Posx = mouse.x - SOME_FIXED_VALUE;

you'll want

Code: Adventure Game Studio

1.   int Posx = mouse.x - gOverhotspot.Width / 2;

20

Beginners' Technical Questions / Re: Overhotspot label text goes off screen when mouse cursor is inventory item

« on: 17 May 2018, 18:58 »

Here's the full example code (which should work as-is):

Code: Adventure Game Studio

1. function repeatedly_execute() {
2.   gOverhotspot.Visible = true;
3.   // calculate coordinates assuming for now that GUI doesn't have to be moved
4.   int x = mouse.x - 198; int y = mouse.y - 90;
5.   // horizontal check
6.   if (x < 0) x = 0;
7.   if (x + gOverhotspot.Width > System.ViewportWidth) x = System.ViewportWidth - gOverhotspot.Width;
8.   // vertical check
9.   if (y < 0) y = 0;
10.   if (y + gOverhotspot.Height > System.ViewportHeight) y = System.ViewportHeight - gOverhotspot.Height;
11.   // finally, actually move GUI there
12.   gOverhotspot.SetPosition(x, y);
13. }

Edit: removed brackets