Please solve this code problem

[pixel_legolas]

There is a code problem that would solve ALOT of the issues I am having.

The problem is like this, I want to make something happen just once when pressing a key. This would solve things as:

- When jumping with space and holding it down will make character jump once
- When using an attack animation character attacks only once even if attack button is pressed
- Playing an attack/jump sound once when entering respective key.

There are an infinite list of what this "make it happen once" code could do but I have not seen it yet being used. Have I just missed it and can it be applied to everything easy using just a small while or if statement?

[Ron]

This might help, its what I use for parachute deployment. Its would all go in your character gsl file.

Code:

bool ChuteOpen = false;

void Initialize( Object@ object)
{
.....
}

bool HandleEvent( Object@ object, const String& in event, GameEventParams@ params)
{
        if (event == "Input")
        {
if (params.stringValue == "Chute")
{
chutePressed = params.floatValue;
return true;
}
        }
..........
}

void DynamicsAdvance( Object@ object, float seconds)
{
Object@ Chute = GetGameManager().GetWorld().GetObject( "parachute");

if (!ChuteOpen && chutePressed > 0.5f && speed > 20)
{
Chute.PlayAnim("Deploy");
ChuteOpen = true;
}
}

[Ron]

Here is a little more complex version playing different animations and adding a force when its open. It also resets itself after a time interval

Code:

bool ChuteOpen = false;
float ChuteTime = 0;

void Initialize( Object@ object)
{
.....
}

bool HandleEvent( Object@ object, const String& in event, GameEventParams@ params)
{
        if (event == "Input")
        {
if (params.stringValue == "Chute")
{
chutePressed = params.floatValue;
return true;
}
        }
..........
}

void DynamicsAdvance( Object@ object, float seconds)
{
Object@ Chute = GetGameManager().GetWorld().GetObject( "parachute");
ObjectCollide@ body = object.GetCollideObject( "Body");

if (!ChuteOpen && chutePressed > 0.5f && speed > 20)
{
Chute.PlayAnim("Deploy");
ChuteOpen = true;
}
else if (ChuteOpen && ChuteTime > 14.0)
{
Chute.PlayAnim("Idle");
ChuteOpen = false;
}
else if (ChuteOpen && ChuteTime > 12.0)
{
Chute.PlayAnim("Repack");
}
else if (ChuteOpen && ChuteTime > 10.0)
{
Chute.PlayAnim("Deflate");
}
else if (ChuteOpen && ChuteTime > 2.0)
{
Chute.PlayAnim("Deployed");
}

if (ChuteOpen)
{
ChuteTime += seconds;
float chuteForce = speed * windDrag * 250.0f;
if (chuteForce >= 0)
{
body.AddForce( object.GetCurMatrix().Project( 0, 0, chuteForce));
}
}
else
ChuteTime = 0;

}

[gekido]

When handling keypresses, there are a couple of ways to interpret the event.

Previously, in Beyond Virtual, we only had the 'params.floatValue;' method of seeing whether a key has been pressed. 

A few releases ago, we also added bool & int values for keypress events, which allow you to get a bit more specific info about whether a key has been pressed or not.

So you can do something like:

Code:

bool action= false;

bool HandleEvent( Object@ object, const String& in event, GameEventParams@ params)
{
        if (event == "Input")
        {
if (params.stringValue == "BoolAction")
{
action= params.boolValue;  // true if the key has been pressed and not handled previously
return true;
}
        }
}

Or, alternately, you can use the intValue to check and see whether a key has been pressed, released or hasn't changed state, like so:

Code:

bool action= false;

bool HandleEvent( Object@ object, const String& in event, GameEventParams@ params)
{
        if (event == "Input")
        {
if (params.stringValue == "IntAction")
{
                        if (params.intValue == 1)
                        {
                            // intValue value of 1 means that the key has been pressed (ie a KeyDown event)
    action1= true;
}
                        if (params.intValue == -1)
                        {
                            // intValue of -1 means that the key has been released (ie a KeyUp event)
    action= false;
                            return true;
                        }
}
        }
}

So depending upon what you are looking to do you can use any of the floatValue, intValue or boolValue input events to handle specific keys.

[pixel_legolas]

Thanks both of you. One handles this with a timer and the other with bool, I think having both solutions are good for different things.

I will try this the coming days, expect a printed copy in store soon

[pixel_legolas]

Ok, this is what I have so far but is not working the way I want. The character is now soing the attack animation forever without me even pressing a button:

Adding after jump and move etc

if (params.stringValue == "Attack")
      {
         AttackPressedis= params.boolValue;  // true if the key has been pressed and not handled previously
         return true;
      }
      
      return false;
   }

In dynamics advance:

   

if ( AttackPressedis = true)
    {
    //base.SetLinearVelocity( Vector( 0, 0, 0));
    object.PlayAnim("Attack");
   GetGameManager().GetWorld().AddAreaForce(object.GetPosition(), 20, 100);
   
    }

Something happened at least after all errors I got but now it doesn't do what I want   

[Ron]

Looks like you need a way to set it back to false. I have never used the boolValue for inputs before so I not very familiar with that method yet.

You could also set it back to false after a certain amount of time in the DynamicsAdvance section of code or set it to false with the keyup

[pixel_legolas]

Well I am basically stuck here again. I am randomly setting return false; and and other things in script but most often hit a script error, mostly about "this is not a bool" or "bool" is not stated.

Gekido, could you provide a very small demo code with the lego-man or something. Just a very easy attack thingy or just play a sound once when hitting a certain key...say E

[pixel_legolas]

hm, figured it out but probably ugly. This code plays a battle animation for 1.49 seconds and then stops. It resets the timer to zero and when you hit the key again it plays it for another 1.49 seconds

PS. die is actually a battle anim but to many places to change to

float diePressed = 0;
bool diePressedis = false;

  if (params.stringValue == "die")
      {
         diePressed = params.floatValue;
         return true;
      }

   if ( diePressed > 0.1 && AttackTime < 1.5)
    {
   
   diePressedis = true;
   base.SetLinearVelocity( Vector( 0, 0, 0));
    object.PlayAnim("Die");
   
   }
      

   
   if (diePressedis)
   {
   AttackTime += seconds;
   }
   
   
   
   if (AttackTime == 1.49)
   {
   diePressedis = false;
      
      }
      
if (diePressed < 0.1)
{
diePressedis = false;
AttackTime = 0;
}

[Ron]

Glad you got it working. My typical coding is find 1001 way that it will not work, finally get something semi-working the way I want it to, figure out that I accidentally erased something I needed at trial 500 or so, try to remember what I did, finally get it working somehow and do not know how it happened  . The final result is code that absolutely nobody can understand, even myself lol

[BigDaz]

This is what I had trouble with when doing my helicopter in the Tips n Tricks section of the forum. The inputs work but you cant input more than 1 thing at a time and it's not very good.

[pixel_legolas]

Ron, I really like your way of doing different animations after a certain time.

I am thinking of a knight where you press the attack key once and hold it. This will make the knight do attack1 and after certain time do attack2. This is good to blend different attacks in 1 motion.

How would I do to make the knight do different attack motions when pressing the attack key? So, when pressing the key he does not start with same animation?

I am thinking of:

//Super psuedo code deluxe

random (1-3)

Case 1

do attack animation 1

Case 2

do attack animation 2

etc

I still wish to have a good example including the bool version because this timer is only good when you know the exact time it should stop. I prefer it to loop the whole animation and then just return to idle

[gekido]

If you look in the 'path_character.gsl' script in the default script library (in the AI category) you can find an example of how to do the 'random anim' thing:

// standing idle, randomize
            int anim = RandomInt(1, 10);
            switch( anim)
            {
               case 1:
                  object.PlayAnim( "Listen");
                  break;
               case 2:
                  object.PlayAnim( "LookAround");
                  break;
               case 3:
                  object.PlayAnim( "Talk1");
                  break;
               case 4:
                  object.PlayAnim( "Talk2");
                  break;
               case 5:
                  object.PlayAnim( "ClapHands");
                  break;
               case 6:
                  object.PlayAnim( "Cheer");
                  break;
               default:
                  object.PlayAnim( "Idle");
                  break;                  
            }