Elysian Shadows

LeonBlade wrote:Hello everyone,

I've been working on making a simple engine in C++ using SDL (possibly integrating OpenGL).
Now, the question I have, is how to structure a game engine...

I'm stumped on this really, I know that you need to make classes for textures and sprites or objects etc etc.
But I'm not entirely sure where to go or what to do...

If someone could point me in a direction where I can find how I should structure a game engine.
Right now I made a "GameObject" class and a "Game" class but I feel as if I'm not going about it right...

Thanks, hope you guys can be of assistance.

// Here you can see the flow of the engine //
Engine->Graphics->2D->DrawObject(box);
Engine->Logic->HandleObject(Vec2, box);

Engine::DrawBox2D(Vec2 pos, int tex)
{
	Graphics2D->DrawRect(pos, tex);
	Logic->HandleObject(pos);
}

// So now you can do this //
Engine->loadtexture("box.png", 1);
vec2 box_pos(10, 10);
drawing_loop
{
    Engine->DrawBox2D(box_pos, 1);
}

LeonBlade wrote: There would be a map for textures like this:

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std::map<uint, BETexture> be_textures;

The AddTexture function would look something like this:

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BETextureManager::AddTexture(std::string filename) {
     be_textures[INDEX] = IMG_Load(filename.c_str());   // the INDEX will be figured someway... not sure yet probably just "pushing" the new texture
     //do the rest of the stuff with the texture like transparency etc...
}

So now that the texture is stored with AddTexture you can apply the texture to a sprite or whatever and render it etc.

LeonBlade wrote:Here's what I wanted to do for that:

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BESprite mySprite;
mySprite.loadTexture(btm.GetTexture(0, NULL));  // GetTexture(id, source_rect) 
mySprite.x = 100;
mySprite.y = 50;

And rendering would be as follows:

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mySprite->Render(screen);

Passing in screen as the destination surface.

I'll post that once I get that done, any suggestions?

GroundUpEngine wrote:

LeonBlade wrote:Here's what I wanted to do for that:

Code: Select all

BESprite mySprite;
mySprite.loadTexture(btm.GetTexture(0, NULL));  // GetTexture(id, source_rect) 
mySprite.x = 100;
mySprite.y = 50;

And rendering would be as follows:

Code: Select all

mySprite->Render(screen);

Passing in screen as the destination surface.

I'll post that once I get that done, any suggestions?

Nop, looks pretty much legit to me, cool engine name btw
I miss SDL

LeonBlade wrote:I got BESprite done (for the most part).
This is what it looks like:

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BESprite mySprite;
mySprite.LoadTexture(btm.GetTexture(0));   // you can also pass in a source rectangle
mySprite.Move(position, true);
...
mySprite.Render(screen);

Should it inherit the BESprite class?
Or should it be a class of it's own?
And I plan on having NPCs in the Engine and then Characters that would inherit from NPCs or BLAH something.

Anyone have some suggestions?

class BECharacter: public BESprite {
  private:
    BEPoint pos; // NPC position var //

  public:
    BECharacter(int x, int y) { // Init Constuctor //
        pos.x = x;
        pos.y = y;
    }
    BEPoint BECharacter::GetPosition() { // Find NPC position //
        return(pos);
    }
};

// So you can //
BECharacter bob(100, 100);
bob.LoadTexture(btm.GetTexture(0));
etc..

Live-Dimension wrote:Sorry to be the bringer of bad news (don't shoot the messenger?) but

http://www.blade3d.com/

http://www.bladeengine.com/

LeonBlade wrote: I'll just change it to BBE for Blade Brothers Engine.