Good day everyone.
I'm trying to draw the text "Pass Complete!" to screen with this code:
spriteBatch.DrawString(font, "PASS COMPLETE!", new Vector2(30, 130), Color.White);
Which does fire off the proper IF statement. However, how do I go about then removing that text from the screen? I'm really not sure at all where to go on from here and my instructor wants me to google the answer or find it in textbook. I have been all over my XNA textbook and I have found no outlet to removing that text.
Thanks for any and all help.
Update:
protected override void Draw(GameTime gameTime)
I have the IF statement included in here. Basically it checks collision with p_Receiver and if it the bool checks out, it draws the DrawString. Should I maybe be looking at this from a different angle?
Final:
I went ahead with the following as the answer and it's working better then before. :)
if (PassInfo == 3) {
(timer code)
(IF timer not "used up" then run the draw)
Working good for now.
I appreciate it.
I'm doing this by function that add text with some parameters into generic list. and then i update and draw items from that list. in pseudo code:
function addText(text,position,duration)
texts.add(new t(text,position,duration))
end function
function updateText()
for each t as text in texts.findall(where t.active)
t.duration -= 1
if t.duration < 0 then t.active = false
next
end function
function drawText()
for each t as text in texts.findall(where t.active)
//draw it
next
end function
so by this you can add unlimited number of texts on different position and duration on screen.
A lot of games redraw the entire window / screen each time through the draw cycle so there's a distinct chance that the solution to removing it is simply to stop drawing it.
i.e. have your if condition not draw the text when it is no longer required.
If, on the other hand, you've some more complex drawing logic that only draws portions of the window / screen that need updating then you'll need to include logic to redraw that part of the screen that contained the text once it is no longer needed.
Related
I have a simple program in C++ builder with VCL that i need to migrate to Firemonkey. In this application i need to draw on a TChart, but i don't know how to get it to work. My application is really simple; a user inputs data in a stringgrid and then the data is displayed in two different TChart by clicking two different buttons.
The first button click is to divide the TChart into equal parts (generally in two parts, but the user can divide the TChart into more than two parts). In the first example there is a column, with two long rectangles with texts, in it. In this example it's two rectangles with "CH PL".
The second button is supposed to draw on the same TChart this:
It's essentially two or more rectangles which go from the beginning of the chart until the end.
To make it simple i need to divide the TChart into two or more equal parts horizontally and then draw rectangles with texts on it, which is the simplest solution.
I'm really lost because by searching on the net i came across a similar problem by simply using the TChart.AfterDraw() method, but I don't know how to use it, it's not really clear.
The drawing are generated once the user clicks a button, else there should be nothing.
My method for drawing so far:
void __fastcall TForm1::rbComprChange()
{
Series5->Clear(); //used for clearing the series to regenerate them from the user input
for(int i=0;i<StringGrid1->RowCount;i++)
{
Series5->AddGantt(StrToDate(StringGrid1->Cells[4][i]),StrToDate(StringGrid1->Cells[5][i]),i,StringGrid1->Cells[1][i]);
Series5->NextTask->Value[i]=i;
}
// How and where should i draw these rectangles?!
}
Can someone guide me or explain to me how to do that either in C++ Builder or Delphi.
I'm using Paintcode V3 and last Xcode for my project.
In Paintcode I draw a red path, kind of "clock hand" with a radius variable to be able to rotate it.
In my Xcode project, this custom UIView is added to a main view.
When the red path is rotating, I need to know when it intersects with another element of the view.
I tried:
if self.redPathView.frame.intersects(self.anotherView.frame) {
//do something...
}
but it can't work because redPathView is the entire Paintcode canvas (the square frame) and not only the red path.
I'm searching a way to access to the red path of my view.
Interesting problem.
I don't think there is a way to do exactly what you are looking for...
Like you mentioned, when we use PaintCode, our custom drawings become an entire UIView.
We can't access its specific elements (like your redPathView).
(I'm favoriting this question in case anyone knows if we actually can. I may be wrong.)
Anyway, there is a workaround. You could use PaintCode itself to tell you when "collisions" happen. Of course, then you would need to draw everything there... And implement some sort of internal control that would make sense to you.
For example, in the picture below I created this "clock hand", with functions to detect when the red thing touches other UI elements (key point there is the touchedElementID expression -- observe how it updates itself with the "ID" of the rectangles):
There are some issues you may find with this approach, for example the need to know the exact position of other elements on the screen and possibly complex ternary constructions like:
(rotationSanitized <= -352 || rotationSanitized >= -8) ?
1 :
(rotationSanitized <= -82 && rotationSanitized >= -98) ?
2 :
(rotationSanitized <= -172 && rotationSanitized >= -188) ?
3 :
(rotationSanitized <= -262 && rotationSanitized >= -278) ?
4 : 0
Also, how to "export" and consume this information along with the StyleKit in Xcode?
The trick I did was to add an empty (no Fill, no Stroke) UI element in PaintCode and associate the touchedElementID expression result to the alpha value of the element.
This way I could access the expression in my custom view, for example via StyleKit.touchedElementID. But that introduces a new problem since now I have to change the generated StyleKit every time it is exported (two lines of code, but still). That is kind of a fragile solution.
However, if you are ok with that, then it's just a matter of consuming this new information...
For that I created a protocol, so my ViewController can act as the delegate of my custom view, and perform whatever it needs to do when the most internal UI elements in PaintCode are "touched".
Here is the final result:
Finally, check this project in GitHub with all the code and samples.
I'm having a little curious sense of art in programming at the moment. And I want to script my Autotouch App on my iOS to generate Pixel Art inside of another app.
I was doing this previously by typing in code to tap at the screen at one coordinate, I did this 2000+ times and it got the job done. But there should be a better, smarter way to get it done.
My test image is going to be very symetrical to make things easy.
There is a code in the Lua app that I'm using to simply tap on the screen,
tap(x, y)
But I want to set this up like:
tap({xTable}, y)
But I'm not sure if that will "tap" at each x coordinate that I've listed for the y variable.
I want to paint a pixel at one very specific coordinate, and then step 5 pixels away and paint the next one, and repeat that until the end of the line.
Is this at all possible or am I reaching beyond the language capabilities?
Edit: for some reason my phone is not blocking code when I'm asking a question, if someone sees this and wants to edit, I would be grateful.
Is this at all possible or am I reaching beyond the language capabilities?
Not even close. I recommend you read Programming in Lua.
tap({xTable}, y)
But I'm not sure if that will "tap" at each x coordinate that I've listed for the y variable.
Why are you not sure? Did you not write it? If not, you can trivially write it yourself given tap:
function tapxs(xs, y)
for i,x in ipairs(xs) do
tap(x,y)
end
end
...
tapxs({10,20,30,40}, 10) -- tap at 10,10; 20,10; 30,10; etc.
I want to paint a pixel at one very specific coordinate, and then step 5 pixels away and paint the next one, and repeat that until the end of the line.
What is "the line"? Is it purely horizontal? You could write:
function tapHorizontally(startX, maxX, y, increment)
for x=startX,maxX,increment do
tap(x,y)
end
end
...
tapHorizontally(10,100,20,5) -- tap from 10,20 to 100,20 in 5 pixel increments
Of course, that's a bizarrely specific function. You'd typically write something that takes a starting x,y and ending x,y and draws between them, so you can support horizontal, vertical, diagonal lines all with the same function, but that requires more math.
The bottom line is: Lua is a full blown, powerful, high level programming language. It could be used to write the very app you're tapping on, or the app you're using to generate taps, so the limits are going to be your knowledge of programming/algorithms/math/etc.
I am a beginner at ActionScript3, and for my learning purpose, I am trying to build a match3 kind of game. I am making is a clone of bejeweled kind of game. but instead of swapping, I have to delete those elements and shift the upper elements down and add new elements above those shifted elements.
I am able to delete matched elements and after matching I'm removing those elements but I am stuck with the shifting code. I am not able to shift those elements down.
I believe that you should take a look at Richard Lord's Tetris source code as your game may be somehow similar in mechanics to Tetris. Tetris shifts down rows when you get lucky.
Richard Lord is one of the Flash Gurus and his way of doing things may seem pretty advanced for a starter like you. Take a look over the source code and see if it fits you. What I can tell is that this is the proper way to make a game but maybe it's not the best point to start for a novice like you that is in urgent need.
http://www.richardlord.net/blog/actionscript-3-tetris-source-code
I would approach it like this in 2 parts.
Loop through your array of board positions starting from the bottom row and check for an empty unoccupied slot, if you find one do another loop through the row above till you find a piece on the same column. If you find a piece on the row above apply a tween to move it down to the empty slot and continue your loop.
Once you have looped through all rows, and animated all the tweens you need to loop through again to find all the gaps that need gems dropped into them. Create new elements at those positions and then move them up by (element height * row), apply another tween to animate them back to their starting position.
Is there a way to draw a long text on the screen using SpriteBatch.DrawString? I mean inserts new lines when comes to the end of the screen.
I'd suggest looking at XNAwiki - TextRendering.
Inserting new lines is something you'd have to calculate yourself it's not something you an do automatically with the XNA framework, but yes it's possible to write code to do that.
One way to do it would be to take the string want to write and to move through it a word at a time an measure it until you get enough words to fill the width of whatever area it is you want to fill. Once you've found that width, you'd either change the Y Position of the string you want to draw and move onto the next line or insert a new line character into the string at that point and start calculating the amount of words that should be on the next line.
A thing to pay attention to is that string manipulation is expensive and generates a lot of garbage so you should try and minimize the amount of times you do something like that. If the text is static and never changes it would be ideal to do this one and never again while the game is running.