L2J Server

Posted: **Fri Jan 28, 2011 4:14 am**

i've read some source of L2j. i wanna research the map technology.
but may be i am too dull to understand the below code

Code: Select all

     /*     * biteshift, defines number of regions     * note, shifting by 15 will result in regions corresponding to map tiles     * shifting by 12 divides one tile to 8x8 regions     */    public static final int SHIFT_BY = 12;        private static final int TILE_SIZE = 32768;//why here is 32768        /** Map dimensions */       //why subtractor is 17 18 19 20...    public static final int MAP_MIN_X = (Config.WORLD_X_MIN - 20) * TILE_SIZE;    public static final int MAP_MAX_X = (Config.WORLD_X_MAX - 19) * TILE_SIZE;    public static final int MAP_MIN_Y = (Config.WORLD_Y_MIN - 18) * TILE_SIZE;    public static final int MAP_MAX_Y = (Config.WORLD_Y_MAX - 17) * TILE_SIZE;        /** calculated offset used so top left region is 0,0 */    public static final int OFFSET_X = Math.abs(MAP_MIN_X >> SHIFT_BY);    public static final int OFFSET_Y = Math.abs(MAP_MIN_Y >> SHIFT_BY);        /** number of regions */    private static final int REGIONS_X = (MAP_MAX_X >> SHIFT_BY) + OFFSET_X;    private static final int REGIONS_Y = (MAP_MAX_Y >> SHIFT_BY) + OFFSET_Y;

thanks i wanna someone help me to comprehend this code

Posted: **Mon Feb 14, 2011 8:37 am**

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public static final int MAP_MIN_X

Only means the variable named "MAP_MIN_X" is an integer type.

There is no "maps" in your example. By maps, I mean Maps, FastMaps etc.

In your example, each variables got a normal value, that's all.

To take an exemple, let's calculate MAP_MIN_X = (Config.WORLD_X_MIN - 20) * TILE_SIZE

Higher you see TILE_SIZE = 32768
Let's say for exercice purpose WORLD_X_MIN = 1000.

MAP_MIN_X = (1000 - 20) * 32768
MAP_MIN_X = 32112640

That's all, lol.

That just defines 4 points for another program part. If you search about the use of those variables, just search where are used those variables.

L2J Server

someone could help me about Map

someone could help me about Map

Re: someone could help me about Map