Topics

1

Graphics / Drawing a short line between Sprite & Mouse

« on: June 09, 2018, 11:31:09 pm »

I have figured out how to draw a line between a sprite and the mouse. I am trying to make the line shorter. I want to draw a bullet pointing towards the cursor. How would I do that?
The game is a top down game. I have tried dividing the mouse cursor's position, also I have tried subtracting it by 5.

Thanks in advance

2

Graphics / need help with bloom

« on: June 08, 2018, 11:29:36 am »

I have been trying to add a bloom effect for about 2 hours and 30 minutes going off of the SFML Game Development. I could not figure out the BloomEffect & PostEffect classes. If someone has a bloom tutorial/source/class and would like to share it to me, that would be greatly appreciated!

3

Graphics / How to check if a sprite is touching a line

« on: May 22, 2018, 07:59:55 pm »

As the title says, I am drawing a line between 2 verticies.. One is located at the local player sprite, the other goes to the mouse. How can I tell if a different sprite is touching the line in between local & my mouse?

4

Network / Port-Forwarding with LAN

« on: May 09, 2018, 04:31:26 pm »

I am making a program that only requires LAN connection.
Do I need to Port-Forward a port for UDP connection?
If not, how do I tell which port the client needs to connect to?
Or can I just pick a port at random?

5

Graphics / Need help with move function

« on: May 03, 2018, 02:50:23 am »

Can someone help me with my move function for my main sprite?
My code:

    void Move(RenderWindow* window, Vector2i UPDOWN, Vector2i LEFTRIGHT, Vector2f UPDOWNSPEED, Vector2f LEFTRIGHTSPEED, Sprite collider) {
        if (window->hasFocus()) {
            if (GetAsyncKeyState(UPDOWN.x) && collisionDir != Up) {
                if (collisionDir == None && Collision::PixelPerfectTest(sprite, collider)) { collisionDir = Up; }
                else {
                    sprite.move(0.0f, UPDOWNSPEED.x);
                    //Game::World::tileMap.setCamera(Game::World::tileMap.getCamera() + sf::Vector2f(0.0f, UPDOWNSPEED.x));
                }
            }
            if (GetAsyncKeyState(UPDOWN.y) && collisionDir != Down) {
                if (collisionDir == None && Collision::PixelPerfectTest(sprite, collider)) { collisionDir = Down; }
                else{
                    sprite.move(0.0f, UPDOWNSPEED.y);
                    //Game::World::tileMap.setCamera(Game::World::tileMap.getCamera() + sf::Vector2f(0.0f, UPDOWNSPEED.y));
                }
            }
            if (GetAsyncKeyState(LEFTRIGHT.x) && collisionDir != Left) {
                if (collisionDir == None && Collision::PixelPerfectTest(sprite, collider)) { collisionDir = Left; }
                else {
                    sprite.move(LEFTRIGHTSPEED.x, 0.0f);
                    //Game::World::tileMap.setCamera(Game::World::tileMap.getCamera() + sf::Vector2f(LEFTRIGHTSPEED.x, 0.0f));
                }
            }
            if (GetAsyncKeyState(LEFTRIGHT.y) && collisionDir != Right) {
                if (collisionDir == None && Collision::PixelPerfectTest(sprite, collider)) { collisionDir = Right; }
                else {
                    sprite.move(LEFTRIGHTSPEED.y, 0.0f);
                    //Game::World::tileMap.setCamera(Game::World::tileMap.getCamera() + sf::Vector2f(LEFTRIGHTSPEED.y, 0.0f));
                }
            }
            if (!Collision::PixelPerfectTest(sprite, collider)) { collisionDir = None; }
        }
    }

all of the collisionDir is for detecting which side the collider is at
if anyone has a better way i'd love to do it
if you switch positions quick enough, you can travel through a collider
and if you walk diagnally you can travel with them
any suggestions for better way to detect which side the collider is at?
or just a better way to do movement in general, i guess
here is proper use for calling Move func btw

Game::Entity::g_eLocal.Move(window, Vector2i(VK_UP, VK_DOWN), Vector2i(VK_LEFT, VK_RIGHT), Vector2f(-5.0f, 5.0f), Vector2f(-5.0f, 5.0f), Wall);

6

Graphics / Question about selbaward's tilemap

« on: May 02, 2018, 09:48:43 am »

Link to source used:
https://github.com/Hapaxia/SelbaWard/wiki/Tile-Map
My tilemap code:

        //TileMap Stuff
        Tiles = ENG::TextureFromFile(&MainWindow, "Data//Images//tileMap.png", "main", false, false, true);
        for (auto& tile : levelData) { tile = rand() % 3; } // pick one of the four available tiles at "random"
        tileMap.setLevel(levelData); // connect level data
        tileMap.setLevelWidth(Engine::windowSize.x); // width of 125 means that the level data gets processed as if it is 125 x 80
        tileMap.setSize({ 1280, 720 }); // size of tile map's rendered image
        tileMap.setGridSize({ 40, 24 }); // size of tile map grid (number of tiles)
        tileMap.setTexture(Tiles);
        tileMap.setNumberOfTextureTilesPerRow(3);
        tileMap.setTextureTileSize({ 64, 64 }); // actual size of tiles within the texture
        tileMap.setPosition(MainWindow.mapPixelToCoords(Vector2i(0, 0)));
        tileMap.update();
        window->draw(tileMap);
        //TileMap Stuff

what it draws:
https://i.imgur.com/LZiFJgB.png
it only randomly selects the first 7 rows
my tilemap:
https://imgur.com/a/lKJk3SX
I'm not understanding what setSize & setGridSize & setLevelWidth do.

7

Graphics / Question about drawing tilemaps on a modified view

« on: May 02, 2018, 12:10:58 am »

I can't figure out how to draw a tilemap centered at the origin of the window with a modified view.
Here is my modified view:

View view;
view.setCenter(Game::Entity::g_eLocal.sprite.getPosition());
view.setSize(((float)Engine::windowSize.x), ((float)Engine::windowSize.y));
view.zoom(0.75);
window->setView(view);

My TileMap class:
https://www.sfml-dev.org/tutorials/2.1/graphics-vertex-array.php#example-tile-map
Here is my tilemap:

TileMap TM;
if (!TM.load("Data//Images//64x64grass.png", sf::Vector2u(32, 32), level, 16, 8)) { return -1; }

When I draw the tilemap, it doesn't set it to the origin of the current view.

I have determined that the view zoom is messing it up:
zoom = 1 works perfectly:
https://i.imgur.com/0dSloIz.png
zoom = 0.75 does not:
https://i.imgur.com/KidZMNY.png
it does not update the origin of the window


Also, how do i set the top left corner of the tilemap to the origin of the window?

8

Graphics / TileMap collision

« on: May 01, 2018, 03:48:27 pm »

How would I do collision for a certain texture for my tilemap?
I already have a collision class.
Is there any way to do it without having to set a sprite on top of it?
Am using:
https://www.sfml-dev.org/tutorials/2.1/graphics-vertex-array.php#example-tile-map
for the tilemap
and am using:
https://github.com/SonarSystems/SFML-Box2D-Tutorials/tree/master/SFML/Tutorial%20013%20-%20Pixel%20Perfect%20Collision%20Detection
for collison class

Thanks in advance

9

Graphics / Question about drawing tilemaps off-screen

« on: May 01, 2018, 01:30:41 am »

I was able to figure out how to draw a tilemap but I have a few questions.
How would one draw a tilemap off-screen or generate it procedurally?
I'm using https://www.sfml-dev.org/tutorials/2.1/graphics-vertex-array.php#example-tile-map
for my tilemap class.
Or how would you draw anything off-screen for that matter?
My View is centered on my local sprite

      View view;
      view.setCenter(Game::Entity::g_eLocal.sprite.getPosition());
      view.setSize(((float)Engine::windowSize.x), ((float)Engine::windowSize.y));
      window->setView(view);

Maybe i'm just not understanding how Views work.
Also, how would you draw an infinite tilemap?

10

Graphics / Question about textures

« on: April 30, 2018, 05:46:02 pm »

Where do you guys get most of your textures for sprites & such?
What program do you use to make your texture?
Any link on a tutorial of how to make a texture.

Thanks in advance