Another one noobie question.
I have movieclip spaceship_mc on Main Timelime.
Its instance name is spaceship1_mc (added from library manually).
In Library this symbol has 2 layers: Objects layer and Action layer.
I put inside Action layer such simple code:
var spaceship1_mc:MovieClip = new MovieClip;
spaceship1_mc.blendMode = BlendMode.SCREEN;
spaceship1_mc.scaleX = 2;
spaceship1_mc.scaleY= 2;
I suppose, that at run time this code must work automatically, and all those parameters will be set at the very beginning.
However, nothing changes. As if this code doesn't work.
QUESTION1: Please, tell me what is wrong?
Maybe I should use some more complicated dot-syntax?
QUESTION2: What is the name of Main Time Line?
I tried to use stage, root, MainTimeLine, in the code above, but it doesn't work.
Using google I've found one decision.
Perhaps, It is somewhat redundant and (..Hey...WTF? It's helicopter at the skyline, dudes!...Cool...)... Okay.
And here it is:
var ship1:MovieClip = parent.getChildByName("spaceship1_mc") as MovieClip;
ship1.blendMode = BlendMode.SCREEN;
ship1.scaleX = 2;
ship1.scaleY= 2;
Well... I suppose it is somewhat too indirect.
So we must read the name of some Instance and determine it as variable. I guess there must be some more laconic way.
Related
in this video, https://youtu.be/klBvssJE5Qg I shows you how to spawn enemies outside of a fixed camera. (this is in GDscript by the way) How could I make this work with a moving camera? I wanna make a zombie fighting game with a moving camera and zombies spawning outside that.
I would really appreciate help with this.
I've tried researching on the internet about how to do it, but I just didn't find it.
N/A..................................
After looking at the video, I see they are using this line to spawn:
Global.instance_node(enemy_1, enemy_position, self)
This suggest to me a couple thing:
The position is probably either relative to the self passed as argument or global.
There must be an Autoload called Global that I need to check to make sure.
And the answer is in another castle video.
In the video Godot Wave Shooter Tutorial #2 - Player Shooting we find this code:
extends Node
func instance_node(node, location, parent):
var node_isntance = node.instance()
parent.add_child(node_instance)
node_instance.global_position = location
return node_instance
And thus, we are working with global coordinates global_position. Thus enemy_position is used as global coordinates.
Ok, instead of using enemy_position as global coordinates we are going to use it as local coordinates of the Camera2D (or a child of it). Which means you need a reference to the Camera2D (which I don't know where do you have it).
You could make your code in a child of the Camera2D, or take the transform of the Camera2D using a RemoteTransform2D. Either way, you could then work in its local coordinates. Thus you would do this:
Global.instance_node(enemy_1, to_global(enemy_position), self)
Or you could have a reference by exporting a NodePath (or in the newest Godot you can export a Camera2D) from your script and set it via the inspector. So you can do this:
Global.instance_node(enemy_1, camera.to_global(enemy_position), self)
Where camera is your reference to the Camera2D.
In the following section of Arena.gd:
func _on_Enemy_spawn_timer_timeout():
var enemy_position = Vector2(rand_range(-160, 670), rand_range(-90, 390))
I believe you can add the X and Y coordinates of the camera to their corresponding random ranges in the enemy position Vector2. This will displace the enemy depending on where the camera is currently located.
You can get the position of the camera with this:
get_parent().get_node("Name of your camera").position
When this is all put together:
func _on_Enemy_spawn_timer_timeout():
var enemy_position = Vector2(rand_range(-160, 670) + get_parent().get_node("Name of your camera").position.x, rand_range(-90, 390) + get_parent().get_node("Name of your camera").position.y)
Keep in mind that you might need to displace the values in the following while loop as well. I hope this helps.
Sorry in advance, this is an extremely noobie question (but i'm just getting into NGUI with unityscript and can't find many answers/tutorials/docs).. Also my untiyscript skills are sub-par.
I have a TCG/Playing card game object with some basic RPG stats (strength, dexterity) that currently display on the card in GUIlabel and trying to convert this to NGUI. I'm adding a UILabel as a child to the card (which contains the stats script)
Looking for some advice on going about this, the only way I've even remotely gotten something to display correctly is, unfortunately I have to attach the stats script to the label too:
var strLbl : UILabel;
function Start() {
var strLbl = GetComponent(UILabel);
}
function OnGUI() {
strLbl.text = strength.ToString();
}
This is throwing numberous 'nullreferenceexception: object reference not set to an instance of an object (for the stats script)
Do I need to make a separate label for each stat or is there a way
to aggregate it into one label? (seems when I try to add strength
,then dexterity it overrides it)
is OnGUI the correct course for NGUI or is there a more efficient
function?
Is this script attached to the object that the UILabel is on? You should do a check for
if(strLbl != null)
strLbl.text = strength.ToString();
You could aggregate them into one label (though if individual stats update I would advise against it), assuming you want each stat on a newline then your next would be: strLbl.text += "\n" + dexterity.ToString()
No need to use OnGUI with NGUI. Especially not for setting things. You probably want to do this whole stage in Start() and have another method called for updating the label.
I am trying to make a simple as2 shooter but when I try to shoot an enemy the bullet just go thru it and doesn't remove the enemy. I tried to put
if (hitTest(_root.vihollinen)==true
){
_root.vihollinen.remove();
this.removeMovieClip();
}
but nothing happens
Most of the code is just copy/paste because I don't know much about coding but I'm trying to learn!
https://www.dropbox.com/s/58u34tbeve6oile/game.zip
The most significant issue is that your enemy needs an Instance Name in order for the code to understand it. Simply click on your enemy movieclip, and add vihollinen to the Instance Name field at the top.
Next, your bullet code is close, but needs some adjustments. Here is your code:
_root["bullet" + bulletsFired].onEnterFrame = function(){
this._x += this.xmov;
this._y += this.ymov;
if (hitTest(_root.vihollinen)==true){
_root.vihollinen.remove();
this.removeMovieClip();
}
};
If you're ever using an onEnterFrame handler like that with a function, it's good practice to always refer to the current object with this, like so: if(this.hitTest(_root.vihollinen) == true){
remove() is not an ActionScript2 function. Try using unloadMovie() instead, like this: _root.vihollinen.unloadMovie()
Changing those three things will make your code function. Be sure that you try to go through each part of your code and understand it to the best of your ability - it'll make things much easier in the long run, even if it takes a long time to figure out why each part is there!
Im using cocos2d (iOS) and box2d to create a game.
I have come to the point where I need to change the contact filter mid simulation and wondering how to go about this.
I need to use maskbits and categorybits, which is fine, im just unsure how to apply them to a b2body mid game.
I'm thinking I may need to retrieve the original b2fixture or b2fixturedef of the b2body on initialization, alter the values accordingly then call a method to refresh - world.Refilter()?
Does this sound somewhat accurate?
Any advice is surely appreciated
Oliver.
b2Filter filter;
for ( b2Fixture* f = body->GetFixtureList(); f; f = f->GetNext() ) {
f->GetFilterData( &filter );
filter.categoryBits = ...;
filter.maskBits = ...;
filter.groupIndex = ...;
f->SetFilterData( &filter );
}
Obviously this would change the filter settings for all fixtures on a body - if you want to be more selective you will have to be able to tell which fixture is which somehow. Eg. if you know it's the only circle fixture you could just look at the type of the fixture to decide, otherwise you would have to make use of the fixture's user data I guess.
You can iterate over all bodies in the b2World. On each body you can iterate over it's fixture and change it's filter. To identify your bodies you can use userData.
The answer from iforce2d might be obsolete. I got the following code working properly with box2d v2.2.1, cocos2D v2.0.0 using Xcode v4.5.2 (here I assume I have a pointer to a b2Body named 'body' with only one fixture, i.e., I don't iterate over all fixtures on the body):
b2Fixture *fix = body->GetFixtureList();
b2Filter filter = fix->GetFilterData();
filter.groupIndex = -1*kPlayerGroupIndex;
fix->SetFilterData(filter);
In the above code I prevent 'body' from colliding with my player body which also has the same groupIndex value, i.e., -1*kPlayerGroupIndex, where kPlayerGroupIndex is a positive integer constant. Any bodies with this negative groupIndex never collide with one another. You could also update the categoryBits or maskBits accordingly to prevent collisions.
GetFilterData(&filter) and SetFilterData(&filter) returned errors for me given the version numbers I quoted above.
first post here so sorry for the length of it. I've been lurking and learning a lot so far but now I have to step in and ask a question. I have read numerous posts here as advised in the FAQs, but I couldn’t find exactly the answer I’m looking for.
Before anything else, let me just say that I'm a total beginner in programming (let alone Objective-C) so please excuse me for any misuse of the terminology. Same goes for any funny english as english not my native language.
I'm building an unit conversion application with a main window containing (among other stuff) two popUpButtons. I'm using indexOfSelectedItem from both popUpButtons in order to calculate a float value (I'm getting the indexes initially in the AwakeFromNib and later in the pop up buttons controller method, when the user change selection).
My problem consists of two parts: first, the code for calculation of that float is pretty massive as I'm comparing every combination of the two indexes of selected items. And second, I would need to have the calculated float value available immediately after launch as the user might want to perform a conversion before using any of the window popUpButtons (otherwise I would put the calculation code in a -(IBAction) method).
So, I'm trying with the following code for calculation of the float value:
#interface MyClass: NSObject
float calculatedFloat;
-(void)setCalculatedFloat:(float)calcFl;
-(float)calculatedFloat;
#implementation MyClass
-(void)setCalculatedFloat:(float)calcFl {
calcFl = 1.0; // I'm simplifying, this is where I'd like to perform calculation
}
-(float)calculatedFloat {
return calculatedFloat;
}
Now, for the first part of my problem, when I use the calculatedFloat in another method, say:
-(void)printIt {
NSLog(#"Calculated float equals: %.2f", calulatedFloat);
}
all I receive in Debugger is 0.00.
First question would be: if this is not working, how do I properly access this value from within another method?
For the second part of the problem, I'm using -(void)AwakeFromNib; to set up popUpButtons etc. right after the launch but I really wouldn't like to put all of the float calculation code in it only to repeat it somewhere else later.
So the second question would be: is this even possible what I'm trying to achieve? Further more, do I need to move this calculation code to another class? If so, how can I make that other class aware of the indexOfSelectedItem from a popUpButton?
Sorry for the lengthy post and possibly confusing and silly questions. I hope you didn't have to cringe your teeth too much while reading! :)
Thanks!
-(void)setCalculatedFloat:(float)calcFl {
calcFl = 1.0; // I'm simplifying, this is where I'd like to perform calculation
}
This doesn't show up when you print it later because you assigned to the variable holding the new value, not the variable for the value of the property. You need to assign to your calulatedFloat instance variable.
(You typo'ed that variable name, BTW.)
You should move the calculating into another method, and send yourself that message from awakeFromNib and from anywhere that needs to cause recalculation. That method should call setCalculatedFloat: with the calculated value—i.e., setCalculatedFloat: should be just a simple setter. Once you make that change, you could replace your custom accessors with a #synthesize statement and let the compiler write the accessors for you.
My problem consists of two parts: first, the code for calculation of that float is pretty massive as I'm comparing every combination of the two indexes of selected items.
You might see whether you can create custom objects to set as the menu items' representedObject properties, in order to cut out this massive comparison tree. It's hard to be more specific about this without knowing what your comparison tree does.