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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2001 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The authors can be reached via e-mail at <crossfire@schmorp.de> |
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*/ |
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|
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#include <global.h> |
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#include <random_map.h> |
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#include <sproto.h> |
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#include <rproto.h> |
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|
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/* find a character in the layout. fx and fy are pointers to |
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where to find the char. fx,fy = -1 if not found. */ |
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void |
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find_in_layout (int mode, char target, int *fx, int *fy, char **layout, random_map_params * RP) |
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{ |
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int M; |
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int i, j; |
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|
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*fx = -1; |
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*fy = -1; |
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|
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/* if a starting point isn't given, pick one */ |
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if (mode < 1 || mode > 4) |
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M = RANDOM () % 4 + 1; |
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else |
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M = mode; |
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|
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/* four different search starting points and methods so that |
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we can do something different for symmetrical maps instead of |
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the same damned thing every time. */ |
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switch (M) |
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{ |
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case 1: |
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{ /* search from top left down/right */ |
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for (i = 1; i < RP->Xsize; i++) |
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for (j = 1; j < RP->Ysize; j++) |
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{ |
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if (layout[i][j] == target) |
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{ |
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*fx = i; |
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*fy = j; |
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return; |
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} |
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} |
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break; |
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} |
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case 2: |
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{ /* Search from top right down/left */ |
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for (i = RP->Xsize - 2; i > 0; i--) |
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for (j = 1; j < RP->Ysize - 1; j++) |
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{ |
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if (layout[i][j] == target) |
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{ |
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*fx = i; |
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*fy = j; |
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return; |
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} |
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} |
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break; |
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} |
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case 3: |
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{ /* search from bottom-left up-right */ |
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for (i = 1; i < RP->Xsize - 1; i++) |
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for (j = RP->Ysize - 2; j > 0; j--) |
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{ |
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if (layout[i][j] == target) |
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{ |
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*fx = i; |
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*fy = j; |
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return; |
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} |
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} |
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break; |
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} |
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case 4: |
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{ /* search from bottom-right up-left */ |
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for (i = RP->Xsize - 2; i > 0; i--) |
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for (j = RP->Ysize - 2; j > 0; j--) |
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{ |
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if (layout[i][j] == target) |
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{ |
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*fx = i; |
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*fy = j; |
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return; |
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} |
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} |
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break; |
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} |
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} |
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} |
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|
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/* orientation: 0 means random, |
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1 means descending dungeon |
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2 means ascending dungeon |
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3 means rightward |
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4 means leftward |
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5 means northward |
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6 means southward |
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*/ |
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void |
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place_exits (maptile *map, char **maze, char *exitstyle, int orientation, random_map_params *RP) |
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{ |
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char styledirname[256]; |
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maptile *style_map_down = 0; /* harder maze */ |
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maptile *style_map_up = 0; /* easier maze */ |
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object *the_exit_down; /* harder maze */ |
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object *the_exit_up; /* easier maze */ |
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object *random_sign; /* magic mouth saying this is a random map. */ |
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char buf[512]; |
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int cx = -1, cy = -1; /* location of a map center */ |
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int upx = -1, upy = -1; /* location of up exit */ |
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int downx = -1, downy = -1; |
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int final_map_exit = 1; |
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|
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if (RP->exit_on_final_map) |
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{ |
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if (strstr (RP->exit_on_final_map, "no")) |
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final_map_exit = 0; |
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} |
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|
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if (orientation == 0) |
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orientation = RANDOM () % 6 + 1; |
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|
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switch (orientation) |
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{ |
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case 1: |
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{ |
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sprintf (styledirname, "/styles/exitstyles/up"); |
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style_map_up = find_style (styledirname, exitstyle, -1); |
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sprintf (styledirname, "/styles/exitstyles/down"); |
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style_map_down = find_style (styledirname, exitstyle, -1); |
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break; |
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} |
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|
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case 2: |
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{ |
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sprintf (styledirname, "/styles/exitstyles/down"); |
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style_map_up = find_style (styledirname, exitstyle, -1); |
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sprintf (styledirname, "/styles/exitstyles/up"); |
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style_map_down = find_style (styledirname, exitstyle, -1); |
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break; |
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} |
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|
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default: |
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{ |
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sprintf (styledirname, "/styles/exitstyles/generic"); |
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style_map_up = find_style (styledirname, exitstyle, -1); |
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style_map_down = style_map_up; |
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break; |
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} |
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} |
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|
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if (style_map_up == 0) |
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the_exit_up = arch_to_object (archetype::find ("exit")); |
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else |
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{ |
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object *tmp; |
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|
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tmp = pick_random_object (style_map_up); |
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the_exit_up = arch_to_object (tmp->arch); |
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} |
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|
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/* we need a down exit only if we're recursing. */ |
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if (RP->dungeon_level < RP->dungeon_depth || RP->final_map[0] != 0) |
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if (style_map_down == 0) |
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the_exit_down = arch_to_object (archetype::find ("exit")); |
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else |
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{ |
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object *tmp; |
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|
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tmp = pick_random_object (style_map_down); |
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the_exit_down = arch_to_object (tmp->arch); |
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} |
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else |
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the_exit_down = 0; |
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|
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/* set up the up exit */ |
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the_exit_up->stats.hp = RP->origin_x; |
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the_exit_up->stats.sp = RP->origin_y; |
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the_exit_up->slaying = RP->origin_map; |
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|
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/* figure out where to put the entrance */ |
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/* begin a logical block */ |
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{ |
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int i, j; |
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|
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/* First, look for a '<' char */ |
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find_in_layout (0, '<', &upx, &upy, maze, RP); |
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|
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/* next, look for a C, the map center. */ |
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find_in_layout (0, 'C', &cx, &cy, maze, RP); |
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|
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|
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/* if we didn't find an up, find an empty place far from the center */ |
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if (upx == -1 && cx != -1) |
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{ |
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if (cx > RP->Xsize / 2) |
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upx = 1; |
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else |
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upx = RP->Xsize - 2; |
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if (cy > RP->Ysize / 2) |
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upy = 1; |
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else |
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upy = RP->Ysize - 2; |
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/* find an empty place far from the center */ |
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if (upx == 1 && upy == 1) |
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find_in_layout (1, 0, &upx, &upy, maze, RP); |
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else if (upx == 1 && upy > 1) |
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find_in_layout (3, 0, &upx, &upy, maze, RP); |
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else if (upx > 1 && upy == 1) |
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find_in_layout (2, 0, &upx, &upy, maze, RP); |
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else if (upx > 1 && upy > 1) |
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find_in_layout (4, 0, &upx, &upy, maze, RP); |
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} |
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|
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/* no indication of where to place the exit, so just place it. */ |
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if (upx == -1) |
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find_in_layout (0, 0, &upx, &upy, maze, RP); |
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|
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the_exit_up->x = upx; |
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the_exit_up->y = upy; |
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|
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/* surround the exits with notices that this is a random map. */ |
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for (j = 1; j < 9; j++) |
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{ |
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if (!wall_blocked (map, the_exit_up->x + freearr_x[j], the_exit_up->y + freearr_y[j])) |
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{ |
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random_sign = get_archetype ("sign"); |
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random_sign->x = the_exit_up->x + freearr_x[j]; |
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random_sign->y = the_exit_up->y + freearr_y[j]; |
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|
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sprintf (buf, "This is a random map.\nLevel: %d\n", (RP->dungeon_level) - 1); |
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|
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random_sign->msg = buf; |
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insert_ob_in_map (random_sign, map, NULL, 0); |
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} |
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} |
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/* Block the exit so things don't get dumped on top of it. */ |
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the_exit_up->move_block = MOVE_ALL; |
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|
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insert_ob_in_map (the_exit_up, map, NULL, 0); |
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maze[the_exit_up->x][the_exit_up->y] = '<'; |
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|
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/* set the starting x,y for this map */ |
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map->enter_x = the_exit_up->x; |
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map->enter_y = the_exit_up->y; |
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|
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/* first, look for a '>' character */ |
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find_in_layout (0, '>', &downx, &downy, maze, RP); |
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/* if no > is found use C */ |
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if (downx == -1) |
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{ |
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downx = cx; |
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downy = cy; |
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}; |
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|
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/* make the other exit far away from this one if |
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there's no center. */ |
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if (downx == -1) |
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{ |
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if (upx > RP->Xsize / 2) |
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downx = 1; |
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else |
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downx = RP->Xsize - 2; |
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if (upy > RP->Ysize / 2) |
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downy = 1; |
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else |
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downy = RP->Ysize - 2; |
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/* find an empty place far from the entrance */ |
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if (downx == 1 && downy == 1) |
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find_in_layout (1, 0, &downx, &downy, maze, RP); |
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else if (downx == 1 && downy > 1) |
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find_in_layout (3, 0, &downx, &downy, maze, RP); |
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else if (downx > 1 && downy == 1) |
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find_in_layout (2, 0, &downx, &downy, maze, RP); |
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else if (downx > 1 && downy > 1) |
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find_in_layout (4, 0, &downx, &downy, maze, RP); |
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|
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} |
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/* no indication of where to place the down exit, so just place it */ |
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if (downx == -1) |
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find_in_layout (0, 0, &downx, &downy, maze, RP); |
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if (the_exit_down) |
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{ |
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char buf[2048]; |
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|
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i = find_first_free_spot (the_exit_down, map, downx, downy); |
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the_exit_down->x = downx + freearr_x[i]; |
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the_exit_down->y = downy + freearr_y[i]; |
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RP->origin_x = the_exit_down->x; |
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RP->origin_y = the_exit_down->y; |
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write_map_parameters_to_string (buf, RP); |
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the_exit_down->msg = buf; |
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/* the identifier for making a random map. */ |
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if (RP->dungeon_level >= RP->dungeon_depth && RP->final_map[0] != 0) |
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{ |
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maptile *new_map; |
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object *the_exit_back = arch_to_object (the_exit_up->arch), *tmp; |
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|
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#if 0 |
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/* I'm not sure if there was any reason to change the path to the |
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* map other than to maybe make it more descriptive in the 'maps' |
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* command. But changing the map name makes life more complicated, |
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* (has_been_loaded needs to use the new name) |
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*/ |
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|
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char new_map_name[MAX_BUF]; |
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|
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/* give the final map a name */ |
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sprintf (new_map_name, "%sfinal_map", RP->final_map); |
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/* set the exit down. */ |
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#endif |
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/* load it */ |
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if (!(new_map = maptile::load_map_sync (RP->final_map))) |
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return; |
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|
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the_exit_down->slaying = RP->final_map; |
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|
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for (tmp = new_map->at (new_map->enter_x, new_map->enter_y).bot; tmp; tmp = tmp->above) |
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/* Remove exit back to previous random map. There should only be one |
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* which is why we break out. To try to process more than one |
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* would require keeping a 'next' pointer, ad free_object kills tmp, which |
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* breaks the for loop. |
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*/ |
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if (tmp->type == EXIT && EXIT_PATH (tmp) && !strncmp (EXIT_PATH (tmp), "/random/", 8)) |
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{ |
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tmp->destroy (); |
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break; |
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} |
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|
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if (final_map_exit == 1) |
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{ |
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/* setup the exit back */ |
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the_exit_back->slaying = map->path; |
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the_exit_back->stats.hp = the_exit_down->x; |
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the_exit_back->stats.sp = the_exit_down->y; |
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the_exit_back->x = new_map->enter_x; |
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the_exit_back->y = new_map->enter_y; |
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|
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insert_ob_in_map (the_exit_back, new_map, NULL, 0); |
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} |
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} |
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else |
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the_exit_down->slaying = "/!"; |
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|
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/* Block the exit so things don't get dumped on top of it. */ |
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the_exit_down->move_block = MOVE_ALL; |
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insert_ob_in_map (the_exit_down, map, NULL, 0); |
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maze[the_exit_down->x][the_exit_down->y] = '>'; |
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} |
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} |
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|
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} |
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|
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/* this function unblocks the exits. We blocked them to |
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keep things from being dumped on them during the other |
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phases of random map generation. */ |
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void |
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unblock_exits (maptile *map, char **maze, random_map_params * RP) |
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{ |
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int i = 0, j = 0; |
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object *walk; |
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|
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for (i = 0; i < RP->Xsize; i++) |
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for (j = 0; j < RP->Ysize; j++) |
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if (maze[i][j] == '>' || maze[i][j] == '<') |
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{ |
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for (walk = GET_MAP_OB (map, i, j); walk != NULL; walk = walk->above) |
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{ |
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if (walk->move_block == MOVE_ALL && walk->type != LOCKED_DOOR) |
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{ |
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walk->move_block = MOVE_BLOCK_DEFAULT; |
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update_object (walk, UP_OBJ_CHANGE); |
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} |
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} |
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} |
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} |
