Ludum Dare 48 Work In Progress Games!

Hi thought it would be handy to setup a thread where Unity dev's taking part in this weekends Ludum Dare #23 challenge could post quick WIP shots or links to games that might need some testing/feedback.

Hope I have time to use this, b4n off to warm up!

 

I can't wait to see the games people make! I've started to work on a game myself (not in the Ludum Dare) along with the competition

 

My warm-up game Just done inspired by the LD KeyNote games!

http://dl.dropbox.com/u/19148487/LD23/Warmup/ld23warmup.html

Just enough time to have cuppa get theme and think of designs before getting off to bed!

 

WIP ScreenShot 01



Not sure where this is going but it's a start!

 

It looks good , man!

 

WIP01 Screenshot:



For food and bigger picture:
http://www.ludumdare.com/compo/2012/04/21/first-break-wip01/


My friend has severe internet connection problems, so this will probably become a single man game.

 

WIP Screenshot 2

 

Spend the Last 4 Hours trying to fix a bug with my rotation code, unfortunately not successful.
Probably because my Math Background is lacking.

If anybody knows what I am doing wrong, please share with me.
Thank you for your time.

Demo:
http://dl.dropbox.com/u/65310012/LD23/WebPlayer.html
- Press Left Mouse Button to place the Target at the flattened MousePosition

Hierachy:
- Player (Get's input and calls the appropriate Methods on the Ship)
- Player/Ship (Turns on Z towards mouse)
- Player/Ship/Gun (Turns on Z towards towards MyTarget)
- Player/MyTarget (Get's placed on Fire1 or Fire2)

Code:

Code (csharp):

1.  
2.  
3.     // Tried Update as well, did not work either.
4.     void LateUpdate()
5.     {
6.         // Lookat Target
7.         Target(myTarget.position);
8.     }
9.  
10.     // TODO: Wasted 4 Hours trying to get the rotation code working, I failed.
11.     void Target(Vector3 targetPosition)
12.     {
13.         var dir = targetPosition - transform.position;
14.         float angle = Vector3.Angle(transform.up, dir);
15.  
16.         // Ignore small differences, has helped the jerkiness a bit
17.         if (Mathf.Abs(angle) > 5.0f)
18.         {
19.             Debug.Log("Angle: " + angle);
20.             transform.Rotate(transform.forward, angle);
21.         }
22.     }
23.  

 

This should do the trick, includes smoothing as well. p1 is source angle (could be your current angle of turret in degrees) and p2 is your destination angle to rotate to.

You'll find the correct angle by using Atan2, and then convert to degrees if required. Hope that helps. Or use a built in unity method to get the correct angle you should be pointing to and plug that in (as degrees) to p2. Set t to a number between 0 and 1 (lower means softer rotation).

Code (csharp):

1. static function TweenAngle( p1:float , p2:float , t:float)
2. {
3.     var aDif:float = p2-p1;
4.    
5.     if (aDif >= 180.0)
6.     {
7.         aDif -= 360.0;
8.     }
9.     else
10.     {
11.         if (aDif <= -180.0)
12.         {
13.             aDif += 360.0;
14.         }
15.     }
16.     return p1 + t * aDif;
17. }

The problem with your code is it isn't accounting for the numerical shift between 359 and 0 I believe (didn't check it too carefully). Good luck and ask again if you need help finding the angle to plug into p2 (you should have that).

 

And here's a quick angle function in 2D which should do the job for finding p2.

Code (csharp):

1. static function Angle2D(x1:float, y1:float, x2:float, y2:float)
2. {
3.     return Mathf.Atan2(y2-y1, x2-x1)*Mathf.Rad2Deg;
4. }

(returns resulting angle between two points, in degrees).

 

Yes I know it's one of those rare times I post code help coz it's ludum dare and people need to go for it

Btw the t parameter is how soft you'd like it with 1 snapping to target at top speed.

 

I got a game right here with 13 levels out of the 25 i will try to have.
It's a simple platformer with some puzzling, but overall extremely basic.

Webplayer Right Here.

 

Here i am! I'll do better next time.. link to the WebPlayer

 

I spend another 3 Hours trying different things to get it to work.
Finally got it to work just now, more luck than anything.
But I am ashamed to say, I have no Idea what's going on behind the scenes there.

Once Ludum Dare is over, I will need to grab a math book and start studying.
Any recommendations?

Thanks for the help, it's appreciated.

The Final Code:

Code (csharp):

1.  
2.  
3.     // Get the Angle Beetwen 2 Points in 2D Space
4.     static float Angle2D(float x1, float y1, float x2, float y2)
5.     {
6.         // TODO: Read up on Atan2
7.         //return Mathf.Atan2(y2 - y1, x2 - x1) * Mathf.Rad2Deg;
8.         return -Mathf.Atan2(x2 - x1, y2 - y1) * Mathf.Rad2Deg; // HACK: <-- This one Works, but why?
9.         //return Mathf.Atan2(x1 - x2, y1 - y2) * Mathf.Rad2Deg;
10.     }
11.  
12.     void Target3(Vector3 targetPosition)
13.     {
14.         // Calculate Angle to Target
15.         Vector2 fromPos = myTransform.position;
16.         Vector2 toPos = targetPosition;
17.         float targetAngle = Angle2D(fromPos.x, fromPos.y, toPos.x, toPos.y);
18.  
19.         // Get the Current Z Rotation Angle
20.         float currentAngle = myTransform.rotation.eulerAngles.z;
21.         float uniAngle = Vector2.Angle(fromPos, toPos);
22.         Debug.Log("CurrentAngle: " + currentAngle + " TargetAngle: " + targetAngle + " UniAngle: " + uniAngle + " P2-P1: " + (targetAngle - currentAngle) + " P1-P2: " + (currentAngle - targetAngle));
23.  
24.         // Tween Beetwen them
25.         float lerpValue = 1.0f;
26.         float smoothedAngle = TweenAngle(currentAngle, targetAngle, lerpValue);
27.  
28.         // Set Rotation
29.         myTransform.rotation = Quaternion.Euler(0, 0, smoothedAngle);
30.         //myTransform.localRotation = Quaternion.Euler(0, 0, smoothedAngle);
31.     }
32.  

 

I've been working on my game for about 6 or 7 hours. Here's what it looks like:



Still got a lot of things to do.

 

How long is there to go? i just started

 

It's still a long way to go. This is level 1. I plan to have 5 levels. But well, I got level 1 almost done. By the way you join Compo or Jam?

 

Compo This is a screenshot so far the idea was that you have to stay in the light but now im thinking that the planet makes space ships and you have to shoot them

 

I need to go to sleep and i have school tomorrow but this is what i did in ~3 hours:

http://dl.dropbox.com/u/52409681/Ludumdare23/WebPlayer/WebPlayer.html

Its just a mess of crappy code basically try and get a high score

Does anyone know how to actually submit it?

 

If you mean submit it, go here http://ludumdare.com/compo/ and there should be a
->SUBMIT HERE<- button you can click on. Dont forget to include your source code

Rules can be found here
http://www.ludumdare.com/compo/rules/

 

There is still one hour left for compo submission! I join jam though!

 

Now the Ludum Dare is closed for voting. Who else joined the contest?

 

They are posting over here!

http://forum.unity3d.com/threads/133012-Ludum-Dare-23-games-made-with-Unity-Showcase!

 

what! look like I missed the fun. time to join