"How do I ZScript?"

[Gutawer]

Sure can:

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Struct GlobalStuff {
    // not really practical but it works as a demonstration
    static int ReturnHealth(Actor mo) {
        return mo.health;
    }
}

Then, to call from an actor,

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GlobalStuff.ReturnHealth(self);

[D2JK]

Thanks!

[kodi]

Is there a way to use the "let" special word with two or more actors that contain identically named variables but that do not inherit from each other or a common ancestor?

[Graf Zahl]

No. All 'let' does is to detect the type of the variable by examining the expression on the right hand side of the '='.

[Gutawer]

Is it possible to make a 2-dimensional Dynamic Array?

[Graf Zahl]

No. Due to the need of every array being backed by a native class, they can only be used with integral data types.

[AFADoomer]

I'm trying to make a Status Bar that automatically displays information about in-range actors. I have it working, except that there doesn't appear to be a way to check line of sight in ui context... Is that intentional, or are there a bunch of functions thay just don't have clearscope? I can't think of how this would affect the play environment.

Or is there a different way I should be doing this than as part of a Status Bar?

[Jaxxoon R]

Is there a way to check if two non-solid actors are "touching" (as in, the bounds of their height/radius overlap)?

[Major Cooke]

Sure can:

Code: Select all

Struct GlobalStuff {
    // not really practical but it works as a demonstration
    static int ReturnHealth(Actor mo) {
        return mo.health;
    }
}

Then, to call from an actor,

Code: Select all

GlobalStuff.ReturnHealth(self);

Even in code snippets, you should include a check for the actor actually existing first. That function right there will abort the game of mo is null.

So do this instead:

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return mo ? mo.health : 0;

[AFADoomer]

Is there a way to check if two non-solid actors are "touching" (as in, the bounds of their height/radius overlap)?

Something like this for the radius check (warning, untested code):

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if (actor1.Distance2d(actor2) <= actor1.radius + actor2.radius) {} // Not 100% accurate because internally actors are square...  

- or -

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if (actor1.Distance2d(actor2) <= (actor1.radius + actor2.radius) * 1.414) {} // Not 100% accurate for the same reason - essentially calculates the radius at the diagonal of the actor (radius * sqrt(2)) and uses that instead  

- or -

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if(abs(actor1.pos.x - actor2.pos.x) <= actor1.radius + actor2.radius || abs(actor1.pos.y - actor2.pos.y) <= actor1.radius + actor2.radius) {} // 100% accurate for square actors  

and this for the height/z check:

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if (actor1.pos.z >= actor2.pos.z && actor1.pos.z <= actor2.pos.z + actor2.height) {}

[Major Cooke]

This is how it's done in the engine. AFADoomer's does not account for portals.

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double blockdist = radius + mo.radius;
if (abs(mo.pos.x - it.Position.X) >= blockdist || abs(mo.pos.y - it.Position.Y) >= blockdist)
    continue;

// Q: Make this z-aware for everything? It never was before.
if (mo.pos.z + mo.height < pos.z || mo.pos.z > pos.z + height)
{
    if (CurSector.PortalGroup != mo.CurSector.PortalGroup)
        continue;
}

[Major Cooke]

Is there a way to skip one super call? I.e. Super.Super.FunctionName();

[Graf Zahl]

You have to use the actual class name instead of 'Super'.

[zrrion the insect]

That helps me with an issue I was having actually! Thanks graf.

[Lavender Moon]

Is it possible to convert a string into a StateLabel at runtime? Since you can't have an array of StateLabels in ZScript, I have an array of strings. But unlike the StateLabel variables that I use ResolveState on to turn them into States, ResolveState rejects strings, and there doesn't seem to be any similar function that will take a string and convert it into a StateLabel. I'm currently having to use a lookup table to resolve this, which is annoying.

This is my current code ():

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Array<string> LabelFlash;

action StateLabel B_GetFlash()
{
	string temp = invoker.LabelFlash[invoker.LabelFlashNext];
	invoker.LabelFlashNext += 1;
	
	if(invoker.LabelFlashNext >= invoker.LabelFlash.Size())
	{
		invoker.LabelFlashNext = 0;
	}
	
	//return temp;
	
	if(temp == 'Pistol_Flash')			{ return 'Pistol_Flash'; }
	if(temp == 'Shotgun_Flash')			{ return 'Shotgun_Flash'; }
	if(temp == 'SuperShotgun_Flash')	{ return 'SuperShotgun_Flash'; }
	if(temp == 'Chaingun_Flash')		{ return 'Chaingun_Flash'; }
	if(temp == 'Chaingun_Flash2')		{ return 'Chaingun_Flash2'; }
	if(temp == 'RocketLauncher_Flash')	{ return 'RocketLauncher_Flash'; }
	if(temp == 'PlasmaRifle_Flash')		{ return 'PlasmaRifle_Flash'; }
	if(temp == 'PlasmaRifle_Flash2')		{ return 'PlasmaRifle_Flash2'; }
	if(temp == 'BFG9000_Flash')		{ return 'BFG9000_Flash'; }
	
	return null;
}