src/sky/tile.h

   1 /*
   2  * Copyright (C) 2008 Liam Girdwood
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __TILE_H
  21 #define __TILE_H
  22
  23 #include <glib-2.0/glib.h>
  24 #include "astro_object.h"
  25
  26 #define ARRAY_X_SIZE            30
  27 #define ARRAY_Y_SIZE            30
  28 #define TILE_NODES            2048
  29
  30 struct tile_node {
  31         gint x;
  32         gint y;
  33         gdouble size;
  34         gpointer data;
  35         gpointer next;
  36 };
  37
  38 struct tile_array {
  39         gpointer tile[ARRAY_X_SIZE][ARRAY_Y_SIZE];
  40         struct tile_node node[TILE_NODES];
  41         gint x_coeff;
  42         gint y_coeff;
  43         gint index;
  44 };
  45
  46 struct tile_array* tile_init(void);
  47
  48 gpointer tile_get_object_at(struct tile_array *ta, struct render_coord *rc);
  49
  50 gpointer tile_get_object_nearest(struct tile_array *ta,
  51                                         struct render_coord *rc, gint radius);
  52 gint tile_get_objects_within_radius (struct tile_array *ta,
  53                                         struct render_coord *rc, gint radius,
  54                                         struct tile_node *objects);
  55
  56 void tile_reset_array(struct tile_array *ta);
  57
  58 void tile_add_object(struct tile_array* ta, struct render_object *r);
  59
  60 void tile_set_array_size(struct tile_array* ta, gint width, gint height);
  61
  62 #endif