Messages

1

Graphics / Re: Render Texture with a View

« on: July 31, 2020, 09:19:15 am »

I did not post code originally cause I am working with Box2D as a physics engine, and even the code that isn't part of that is pretty much a whole spaghetti
What I m doing is first constructing a convex shape, and on its points i am drawing Quads.
First i draw on the screen a completely brown RenderTexture (that works perfectly fine) then i draw the convex shape onto another RenderTexture, and then everything with the Quads i draw on the RenderWindow.
It is supposed to look like a cave.
My problem is, as it is on the image (i hope i attached it perfectly), that after i move the RenderTextures stay in place. Moving the sprites with the view works for the brown background, but not for the darker background of the cave (image 2 and 3).

What I think my problem is:
The RenderTexture does not move with the view and so the relative position of the convex shape is allways the same

I may missunderstand how RT-s work, but what I think my goal is and how it is supposed to work, that it fills the view, and moves with it.

I hope I could explain it, english is not my first language, sorry if I am not really clear.

2

Graphics / Re: Render Texture with a View

« on: July 30, 2020, 06:23:11 pm »

Yes I am drawing it to the same position everytime, however that is not the problem.

My goal is to "cut" through a black RenderTexture with shapes, for lighting, and currently it works great on the first frame. But when i move my view the RenderTexture does not seem to "move" with it, because it still shows the "cut" on the first fram, even tough i clear redraw and display every frame. So I think my Problem is that the render texture is assigned to the RenderWindow and not my current view. (I set the View)

3

Graphics / Render Texture with a View

« on: July 30, 2020, 03:51:12 pm »

I can not really figure this out on my own so please help me guys.
In my little "game" i draw stuff to my render window, and if I move the view, it just works like it is supposed to.
But if i draw things to a RenderTexture (clear, draw, display), then load the texture into the sprite then draw the sprite on the window, the RenderTexture stays in place like every other object.
Is there a way I can make the RenderTexture to allways cover my view?

thanks in advance

4

Graphics / Re: PixelPicking with sf::Image

« on: May 21, 2020, 11:27:01 am »

Figured it out!

In case someone, a beginner like me does not know, the "==" operator does not set a color in sf::Color, it compares colors, so my attempt, to set the variable "pixelColor" as the color of the current pixel the loop is looking at failed allways.

5

Graphics / PixelPicking with sf::Image

« on: May 21, 2020, 09:28:51 am »

I am pretty sure I am missing something, but I have been Google-ing this for the last week.
My problem is, that the underneath can not find any pixels Blue (0, 0, 255), and I have absolutely no idea why it is not working.

Little explanation:
startingCave is the name of the Image
what I am trying to achive, is that with the two for loops, the code should go through the image row by row and everytime it finds a blue pixel it should set the if statement true

        Vector2f globalCurrentPos;
        sf::Color pixelColor;

        for (int y = 0; y < startingCave.getSize().y; y++) {
                for (int x = 0; x < startingCave.getSize().x; x++) {

                        globalCurrentPos.x = originDirt.x + x ;
                        globalCurrentPos.y = originDirt.y + y ;

                        pixelColor == startingCave.getPixel(x, y);
                        if (pixelColor == sf::Color(0, 0, 255)) {
                                //createDirt(world, globalCurrentPos);

                                debugText.setString("found");
                        }
                }
        }

6

Graphics / Sprite under PNG

« on: May 04, 2020, 02:55:22 pm »

I want to check if a sprite is under another sprite's transparent part (textured with a png). I haven't really found a solution, is this even possible in SFML?

7

Graphics / Sprite under Sprite

« on: May 04, 2020, 08:13:01 am »

I want to check if a sprite is under another sprite's transparent part (textured with a png). I haven't really found a solution, is this even possible in SFML?

8

Graphics / Sprite under PNG

« on: May 03, 2020, 03:09:25 pm »

Is there a way to check if a sprite is under the transparent part of another sprite (with a png)?

9

Graphics / Sprite under PNG

« on: May 03, 2020, 03:08:00 pm »

Is there a way to check if a sprite is under the transparent part of another sprite (with a png)?

10

Graphics / Sprite under PNG

« on: May 03, 2020, 03:07:36 pm »

Is there a way to check if a sprite is under the transparent part of another sprite (with a png)?

11

Graphics / Sprite under PNG

« on: May 03, 2020, 03:06:25 pm »

Is there a way to check if a sprite is under the transparent part of another sprite (with a png)?

12

Graphics / Sprite under PNG

« on: May 03, 2020, 03:04:49 pm »

I am having truble findig a solution:
Is there a way to check if a sprite is under the transparent part of a png texture? (I mean if it is visible under it)