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1	Java Game APIs & Engines / OpenGL Development / Re: LWJGL: Getting mouse's 3D location	on: 2013-02-08 09:30:34
Quote from: kevglass on 2013-02-08 09:05:26 I think what he/she means is that a X/Y position from the mouse on the screen can be many positions in 3D space - are you looking to project it onto an object? If so, you want to look up generating rays into the screen based on your current projection matrix and collide those with the shapes within your scene. Cheers, Kev Exactly this. Hrmm. So I assume OpenGL Utilities don't really support anythinwg like this, so I'll have to create it myself. I'm thinking about how I would create rays. Perhaps I should read up on it. It doesn't seem like the easiest task, especially taking into account Field of View, and rotation at 15 Degrees.

2	Java Game APIs & Engines / OpenGL Development / Re: LWJGL: Getting mouse's 3D location	on: 2013-02-08 09:00:09
Thanks for the effort... but I'm asking for the Mouse's X, Y, and Z coordinates in the 3D space, not the 2D window.

3	Java Game APIs & Engines / OpenGL Development / LWJGL: Getting mouse's 3D location	on: 2013-02-08 08:54:45
I have a scene set up in a 3D viewport. The game is 2.5D, so for the most part, the game will be composed of sprites. Until I started using glRotated(0.15, 1, 0, 0); to rotate the entire view of the game, I had no problem getting the world location of the mouse. Now, obviously, the input methods I use for Mouse's X and Mouse's Y on the world need updating, or I need new methods. So my question is, is there any method to getting the physical X, Y, and Z location of the mouse, taking in the input of the mouse's X and Y? If OpenGL doesn't support the mouse's location with drawn objects or anything like that, could anyone help me with the math? I gladly thank anyone who takes the time to read this.

Game Development / Newbie & Debugging Questions / Re: Trouble with displaying/loading multiple textures

on: 2012-06-16 05:36:59

I'd love to thank you both very much one last time. I solved it and I found a solution.

For the tile type enum, I added a texture x and y constant. Now my texture coordinates can look like so:

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      GL11.glTexCoord2f(type.scalex, type.scaley+0.25f);
      GL11.glTexCoord2f(type.scalex+0.25f, type.scaley+0.25f);
      GL11.glTexCoord2f(type.scalex+0.25f, type.scaley);
      GL11.glTexCoord2f(type.scalex, type.scaley);

5	Game Development / Newbie & Debugging Questions / Re: Trouble with displaying/loading multiple textures	on: 2012-06-16 04:52:27
ra4king, I called glBegin and glEnd only once per game tick. But now I put the glBegin and glEnd now for each tile. Is that how it's done properly? I got what I wanted to achieve to work, but like Mads said, binding a texture per tile was a bad idea. It bogged my game down ridiculously. I think I will try binding all my images to one texture. And at that point I would just have to change the vertices to match up with the desired image, correct?

Game Development / Newbie & Debugging Questions / [Solved] Trouble with displaying/loading multiple textures

on: 2012-06-16 04:16:53

I've been stuck on this all day. Googling did nothing, neither did the LWJGL wiki.

I have different tiles that will be displayed with multiple textures. Those textures are loaded into a HashMap, and they load just fine. However, when I attempt to display these tiles, they all use the same texture. It's odd to me, because they all use the last loaded texture.

Let's say I initialize the textures here. Whichever line of code is the last, that texture will be used for everything. The only way I can tell them apart is because I also have the tiles colored as well. So right now, all my textures in the game are stone.

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      texturefile.LoadTexture("textures/water.png", "water");
      texturefile.LoadTexture("textures/metal.png", "metal");
      texturefile.LoadTexture("textures/stone.png", "stone");

Here's the draw method for each tile. Is there something I am missing here? Or is it in the initialization?

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public void paint(int camx, int camy){

      GL11.glBindTexture(GL11.GL_TEXTURE_2D, texturefile.getTexture(type.name().toLowerCase()).getTextureID());

      GL11.glColor3f(R*0.6f, G*0.6f, B*0.6f);
      GL11.glVertex2d(l.getX()+camx-offset, l.getY()+camy-offset);
      GL11.glVertex2d(l.getX()+camx+offset, l.getY()+camy-offset);
      GL11.glVertex2d(l.getX()+camx+offset, l.getY()+camy+offset);
      GL11.glVertex2d(l.getX()+camx-offset, l.getY()+camy+offset);
      
      GL11.glTexCoord2f(0, 0);
      GL11.glVertex2d(l.getX()+camx-offset+1, l.getY()+camy-offset+1);
      GL11.glTexCoord2f(1, 0);
      GL11.glVertex2d(l.getX()+camx+offset-1, l.getY()+camy-offset+1);
      GL11.glTexCoord2f(1, 1);
      GL11.glVertex2d(l.getX()+camx+offset-1, l.getY()+camy+offset-1);
      GL11.glTexCoord2f(0, 1);
      GL11.glVertex2d(l.getX()+camx-offset+1, l.getY()+camy+offset-1);
   }

My game is fairly simple as far as how it's displayed. I think once I understand loading textures, things will be a lot easier. Any help would be great, thanks for reading!

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