I'm making a player's death system, but when the enemy collide with the player, nothing happens, well... it print in log how many life's left but its just it, i have created the area 2D group (Hurtbox) and (power(The enemy's area group)), colissionshape and everything else
Play the animation and yield:
if life == 0:
$Spritezada.play("Dead")
yield($Spritezada, "animation_finished")
print("died")
queue_free()
The above code will play the animation, then halt the execution. When the animation player raises the signal animation_finished it will resume, print "died" and set the current node for removal (queue_free).
By the way, the animation_finished signal passes a text parameter. If you do not want to use yield as suggested above, write your code like so:
func _on_Spritezada_animation_finished(anim_name: String):
if anim_name == "Dead":
queue_free()
I believe Godot should be telling you about that missing parameter. If you don't see a message about that, double check you connected the correct signal.
Related
I have to plot a graph in processing by the feedback from encoder motors of the bot. so I have two variables basically left motor encoder and right motor encoder. I planned to vary on in x-axis and another in y-axis. While I went through some of the code on internet I found that, almost everyone has written the graph part code in serial event itself?
So my first doubt is why do they write it in serial event() function rather than void draw()? Another thing is when I tried to write my code for graph in void draw() it had a pseudo code something like this:
xpos1=0,ypos1=height;
void draw():
line(xpos1,ypos1,xpos,height-ypos);// obviously the data(xpos,ypos) is mapped with the width and height of the processing ide window.
xpos1=xpos;
ypos1=height-ypos;
if(xpos1>=width)
{
xpos1=0;
}
if(ypos1>=height)
{
ypos1=0;
}
So I get to see only a small dot traversing on processing ide window and I cannot see the older path that my line has travelled which in the case of the sites which I described when wrote the similar piece of code in serial event() they had a whole graph getting made on the processing window.
Where am I getting wrong? Also is there any alternative to plot the graph using void draw()? I want to vary both xpos as well as ypos as i get two feedbacks form left motor and right motor.
Screenshot of my attempted graph in different frames!
Image
Screenshot of one of the graphs made by somewhat the similar code displayed above but written in the serial event() available on the internet:
As stated in the comments, there are too many subquestions here.
Regarding the question relative to the code, there is one main line that is making the code much more complex than it has to be. You are trying to draw a line between each and every couple of numbers received by the two encoders. There is no need to do that. When plotting a graph, I personally use the point(x,y) function. It's much easier to implement for prototyping purposes, and adjusting the frameRate() at which the sketch is running, you won't notice the difference.
void draw() {
point(encoder1, encoder2);
if (encoder1 >= width) {
encoder1 = encoder1 - width;
}
if (encoder2 >= height) {
encoder2 = encoder2 - height;
}
}
A simple sketch like this one will do the job.
The other thing that is not quite clear is the initialisation of the variables. Usually you initialise a variable if it's continuously increasing, like time, but from your description you want to plot on the X axis one encoder, and on the Y axis the other encoder. So wouldn't it be better to map the values to start with in order not to have them go out of the canvas range?
Please edit the question so that the code is clear and concise, following these guidelines, and try to ask one question per post.
Right now I'm generating geometric figures in processing for a sort of art narrative comic, but for the intro sequence I'd like to have the word, "scan." Repeat on screen until the whole screen is covered, each word touching end to end. If it could be initiated on click that'd be awesome.
I can get text to appear of course, but this kind of repetition isn't something I'm familiar with at all.
Let me know if you need me to post what I'm currently working with.
Thanks!
Step 1: Store the current state (where the next word should be drawn) in variables at the top of your sketch.
Step 2: Inside the draw() function, use those variables to draw one frame of your animation.
Step 3: Then just update the variables holding your state to point to the next place. Processing will call the draw() function 60 times per second, so this will create an animation.
Shameless self-promotion: I wrote a tutorial on animation in Processing available here.
I need to use the result of of WinGetClientSize for a few things, but simply put, how to put the result as a variable. This basically shows what I'm AFTER, but obviously I'm forgetting something.
Local $size = WinGetClientSize("[active]")
MsgBox(0, "The window size is:", $size[0] & "x" & $size[1])
Local $a = $size[0] &
Opt("MouseCoordMode", 0) ;1=absolute, 0=relative
MouseClick("primary", 1035/$a)
need to get it to scale to the selected window.
There are two main problems in your code.
The first is, that you have this & without a second expression in third line.
The second is, that your MouseClick function lacks a third parameter and you'd most likely not want to divide the 1035 through $a but add or substract them somehow...
So I suggest, you would just remove the ampersand and before you actually perform a MouseClick, you should just use a MouseMove with your coordinates before to see, whether your coordinate calculation is correct. You can replace the Move with a Click afterwards when you made sure, the mouse moves to the desired position.
And by the way, your code is not very clear about what you try to have as a result. You should add some more explanation if you want to receive a more precise solution.
Finally: it might probably be better to use the ControlClick function to perform your task as it can automatically find out the coordinates of a given Control for you and you won't have to calculate its position manually.
I'm working on a Qt based application (actually in PyQt but I don't think that's relevant here), part of which involves plotting a potentially continuous stream of data onto a graph in real time.
I've implemented this by creating a class derived from QWidget which buffers incoming data, and plots the graph every 30ms (by default). In __init__(), a QPixmap is created, and on every tick of a QTimer, (1) the graph is shifted to the left by the number of pixels that the new data will take up, (2) a rectangle painted in the space, (3) the points plotted, and (4) update() called on the widget, as follows (cut down):
# Amount of pixels to scroll
scroll=penw*len(points)
# The first point is not plotted now, so don't shift the graph for it
if (self.firstPoint()):
scroll-=1
p=QtGui.QPainter(pm)
# Brush setup would be here...
pm.scroll(0-scroll, 0, scroll, 0, pm.width()-scroll, pm.height())
p.drawRect(pm.width()-scroll, 0, scroll, pm.height())
# pen setup etc happens here...
offset=scroll
for point in points:
yValNew = self.graphHeight - (self.scalePoint(point))
# Skip first point
if (not(self.firstPoint())):
p.drawLine(pm.width()-offset-penw, self.yVal, pm.width()-offset, yValNew)
self.yVal = yValNew
offset-=penw
self.update()
Finally, the paintEvent simply draws the pixmap onto the widget:
p = QtGui.QPainter(self)
p.drawPixmap(0, 0, self.graphPixmap)
As far as I can see, this should work correctly, however, when data is received very fast (i.e. the entire graph is being plotted on each tick), and the widget is larger than a certain size (approx 700px), everything to the left of the 700px area lags considerably. This is perhaps best demonstrated in this video: http://dl.dropbox.com/u/1362366/keep/Graph_bug.swf.html (the video is a bit laggy due to the low frame rate, but the effect is visible)
Any ideas what could be causing this or things I could try?
Thanks.
I'm not 100% sure if this is the problem or not, but I thought I might make at least some contribution.
self.update() is an asynchronous call, which will cause a paint event at some point later when the main event loop is reached again. So it makes me wonder if your drawing is having problems because of the sync issue between when you are modifying your pixmap vs when its actually getting used in the paintEvent. Almost seems like what you would need for this exact code to work is a lock in your paintEvent, but thats pretty naughty sounding.
For a quick test, you might try forcing the event loop to flush right after your call to update:
self.update()
QtGui.QApplication.processEvents()
Not sure that will fix it, but its worth a try.
This actually might be a proper situation to be using repaint() and causing a direct paint event, since you are doing an "animation" using a controlled framerate: self.repaint()
I noticed a similar question to yours, by someone trying to graph a heart monitor in real time: http://qt-project.org/forums/viewthread/10677
Maybe you could try restructuring your code similar to that. Instead of splitting the painting into two stages, he is using a QLabel as the display widget, setting the pixmap into the QLabel, and painting the entire graph immediately instead of relying on calls to the widget.update()
i am playing around with the rotationX/Y/Z properties available in flashplayer since version 10. for testing purpose i created a cube and put canvas objects on three sides of it (top, front, bottom) and created a tween to get the values required for turing by 90 deg. turning the cube (a canvas) using rotationX = xx works well when the three side-canvas objects are small and filled with a not-to-complex element hierarchy. when using larger and more complex content it slows down. the next idea was to remove the canvas elements content and replace it by a snapshotimage of the content instead before starting the turn, after the turn is performed the original content is put back on the sides again. this results in a good perfomance increase. using a tween the last step of rotation is done in the function that is called as the tweenEnd handler. in this function also the process of copying the canvases content back is performed. unfortunately this results in a short hang of the cube right in that last rotation step, the reason for which is that rotation and copying back takes place at the same time.
so i could wait for some time after having called cube.rotationX = endValue by using a timer or setTimeout(func, 500), but this is ugly.
so my question is: after having called cube.rotationX = endValue a period of time is required to calculate data for the rotation and do the rotation itself. is there a way to find out the point in time when the rotation has ended, so that then the copying can be started ?
thank you in advance
tyler
There's no any default event, dispatching when rotation is completed. But I think of using callLater() function to copy back content. Try it.
that is exactly the point, there is not an event indicating the end of the rotation. the solution using callLater() instead of using setTimeout() appears to be an improvement however since waiting for a certain amount of time is always invloving some 'hope it works on machine x'. thank you very much for the hint !
greetings
tyler