[Tutorial] Tracers

    public void TracerLine() {
        try {
            GL11.glBlendFunc(770, 771);
      GL11.glLineWidth(3.0F);
      GL11.glDisable(2929 /*GL_DEPTH_TEST*/);
      GL11.glDepthMask(false);

            double size = 0.45;
            double ytSize = 0.35;
            GL11.glBegin(GL11.GL_LINES);
            GL11.glColor3f(0, 0, 255);
            for(int x = 0; x < ac.theWorld.playerEntities.size(); x ++) {
                Entity entity = (Entity) ac.theWorld.playerEntities.get(x);
                double X = entity.posX;
                double Y = entity.posY;
                double Z = entity.posZ;
                double mX = ac.thePlayer.posX;
                double mY = ac.thePlayer.posY;
                double mZ = ac.thePlayer.posZ;
                double dX = (mX - X);
                double dY = (mY - Y);
                double dZ = (mZ - Z);

                if(X != mX && Y != mY && Z != mZ) {        
                    GL11.glVertex3d(0, 0, 0);
                    GL11.glVertex3d((-dX + size) - 0.5, (ytSize - dY) + 1.0, (-dZ - size) + 0.5);
                }
            }

            GL11.glEnd();    
      GL11.glDepthMask(true);
      GL11.glEnable(2929 /*GL_DEPTH_TEST*/); 
        } catch (Exception e) {}
    }

public void renderEntities(Vec3D vec3d, ICamera icamera, float f)

    public void TracerLine() {
        try { // This attempts the code.
            GL11.glBlendFunc(770, 771); // I'm actually not sure what this is, it was in nametags so I took it
      GL11.glLineWidth(3.0F); // This sets the line width to 3 pixels thick
      GL11.glDisable(2929 /*GL_DEPTH_TEST*/); // Disables depth rendering, allowing it to show through walls
      GL11.glDepthMask(false); // Disables depth masking, allowing it to show through walls

            double size = 0.45; // This sets the box size to 0.45 on both sides
            double ytSize = 0.35; // This sets the height of the box to 0.35 on both sides
            GL11.glBegin(GL11.GL_LINES); // This begins OpenGL's drawing of lines
            GL11.glColor3f(0, 0, 255); // This sets the color of the OpenGL lines to blue (Red, Green, Blue);
            for(int x = 0; x < ac.theWorld.playerEntities.size(); x  ++) { // This loops through all PLAYER ENTITIES that are loaded
                Entity entity = (Entity)  ac.theWorld.playerEntities.get(x); // This set the variable 'entity' to  the following (Shortcut)
                double X = entity.posX; // Sets the variable 'X' to their posX (Shortcut)
                double Y = entity.posY; // Sets the variable 'Y' to their posY (Shortcut)
                double Z = entity.posZ; // Sets the variable 'Z' to their posZ (Shortcut)
                double mX = ac.thePlayer.posX; // Sets the variable 'mX' to your posX (Shortcut)
                double mY = ac.thePlayer.posY; // Sets the variable 'mY' to your posY (Shortcut)
                double mZ = ac.thePlayer.posZ; // Sets the variable 'mZ' to your posZ (Shortcut)
                double dX = (mX - X); // Sets the variable 'dX' to 'mX - X' (Shortcut)
                double dY = (mY - Y); // Sets the variable 'dY' to 'mY - Y' (Shortcut)
                double dZ = (mZ - Z); // Sets the variable 'dZ' to 'mZ - Z' (Shortcut)

                if(X != mX && Y != mY && Z != mZ) { // Checks if their not right on top of you
                    GL11.glVertex2d(0, 0); // Starts drawing the line on your cursor (Middle of the Screen)
                    GL11.glVertex3d((-dX + size) - 0.5, (ytSize - dY) +  1.0, (-dZ - size) + 0.5); // Draws the line to the other player
                }
            }

            GL11.glEnd(); // Ends the line
      GL11.glDepthMask(true); // Enables depth masking to not mess up other rendering entities
      GL11.glEnable(2929 /*GL_DEPTH_TEST*/);  // Enables depth rendering to not mess up other rendered entities
        } catch (Exception e) {} // If there is an error, it does what is inside of the {}, in which case is nothing.
    }