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elmex |
1.1 |
/* |
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* static char *rcsid_move_c = |
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root |
1.2 |
* "$Id: move.C,v 1.1 2006-08-13 17:16:04 elmex Exp $"; |
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elmex |
1.1 |
*/ |
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/* |
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CrossFire, A Multiplayer game for X-windows |
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Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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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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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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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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The author can be reached via e-mail to crossfire-devel@real-time.com |
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*/ |
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#include <global.h> |
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#ifndef __CEXTRACT__ |
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#include <sproto.h> |
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#endif |
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#ifdef COZY_SERVER |
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// use a ptotoype |
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extern int same_party (partylist *a, partylist *b); |
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#endif |
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/* |
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* move_object() tries to move object op in the direction "dir". |
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* If it fails (something blocks the passage), it returns 0, |
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* otherwise 1. |
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* This is an improvement from the previous move_ob(), which |
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* removed and inserted objects even if they were unable to move. |
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*/ |
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int move_object(object *op, int dir) { |
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return move_ob(op, dir, op); |
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} |
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/* object op is trying to move in direction dir. |
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* originator is typically the same as op, but |
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* can be different if originator is causing op to |
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* move (originator is pushing op) |
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* returns 0 if the object is not able to move to the |
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* desired space, 1 otherwise (in which case we also |
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* move the object accordingly. This function is |
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* very similiar to move_object. |
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*/ |
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int move_ob (object *op, int dir, object *originator) |
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{ |
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sint16 newx = op->x+freearr_x[dir]; |
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sint16 newy = op->y+freearr_y[dir]; |
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object *tmp; |
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mapstruct *m; |
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int mflags; |
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if(op==NULL) { |
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LOG(llevError,"Trying to move NULL.\n"); |
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return 0; |
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} |
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m = op->map; |
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mflags = get_map_flags(m, &m, newx, newy, &newx, &newy); |
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/* If the space the player is trying to is out of the map, |
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* bail now - we know it can't work. |
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*/ |
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if (mflags & P_OUT_OF_MAP) return 0; |
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/* Is this space blocked? Players with wizpass are immune to |
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* this condition. |
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*/ |
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if(blocked_link(op, m, newx, newy) && |
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!QUERY_FLAG(op, FLAG_WIZPASS)) |
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return 0; |
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/* 0.94.2 - we need to set the direction for the new animation code. |
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* it uses it to figure out face to use - I can't see it |
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* breaking anything, but it might. |
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*/ |
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if(op->more != NULL && !move_ob(op->more, dir, op->more->head)) |
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return 0; |
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op->direction = dir; |
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if(op->will_apply&4) |
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check_earthwalls(op,m, newx,newy); |
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if(op->will_apply&8) |
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check_doors(op,m, newx,newy); |
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/* 0.94.1 - I got a stack trace that showed it crash with remove_ob trying |
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* to remove a removed object, and this function was the culprit. A possible |
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* guess I have is that check_doors above ran into a trap, killing the |
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* monster. |
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* |
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* Unfortunately, it doesn't appear that the calling functions of move_object |
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* deal very well with op being killed, so all this might do is just |
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* migrate the problem someplace else. |
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*/ |
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if (QUERY_FLAG(op, FLAG_REMOVED)) { |
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LOG(llevDebug,"move_object: monster has been removed - will not process further\n"); |
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/* Was not successful, but don't want to try and move again */ |
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return 1; |
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} |
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/* If this is a tail portion, just want to tell caller that move is |
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* ok - the caller will deal with actual object removal/insertion |
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*/ |
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if(op->head) |
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return 1; |
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remove_ob(op); |
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/* we already have newx, newy, and m, so lets use them. |
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* In addition, this fixes potential crashes, because multipart object was |
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* on edge of map, +=x, +=y doesn't make correct coordinates. |
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*/ |
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for(tmp = op; tmp != NULL; tmp = tmp->more) { |
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tmp->x += freearr_x[dir]; |
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tmp->y += freearr_y[dir]; |
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tmp->map = get_map_from_coord(tmp->map, &tmp->x, &tmp->y); |
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} |
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/* insert_ob_in_map will deal with any tiling issues */ |
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insert_ob_in_map(op, m, originator,0); |
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/* Hmmm. Should be possible for multispace players now */ |
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root |
1.2 |
if (op->type == TRANSPORT) { |
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elmex |
1.1 |
object *pl; |
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for (pl=op->inv; pl; pl=pl->below) { |
146 |
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if (pl->type == PLAYER) { |
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pl->contr->do_los=1; |
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pl->map = op->map; |
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pl->x = op->x; |
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pl->y = op->y; |
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} |
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} |
153 |
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} |
154 |
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return 1; /* this shouldn't be reached */ |
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} |
157 |
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158 |
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159 |
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/* |
160 |
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* transfer_ob(): Move an object (even linked objects) to another spot |
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* on the same map. |
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* |
163 |
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* Does nothing if there is no free spot. |
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* |
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* randomly: If true, use find_free_spot() to find the destination, otherwise |
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* use find_first_free_spot(). |
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* |
168 |
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* Return value: 1 if object was destroyed, 0 otherwise. |
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*/ |
170 |
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int transfer_ob (object *op, int x, int y, int randomly, object *originator) |
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{ |
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int i; |
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object *tmp; |
175 |
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176 |
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if (randomly) |
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i = find_free_spot (op,op->map,x,y,0,SIZEOFFREE); |
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else |
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i = find_first_free_spot(op,op->map,x,y); |
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181 |
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if (i==-1) |
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return 0; /* No free spot */ |
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184 |
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if(op->head!=NULL) |
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op=op->head; |
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remove_ob(op); |
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for(tmp=op;tmp!=NULL;tmp=tmp->more) |
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tmp->x=x+freearr_x[i]+(tmp->arch==NULL?0:tmp->arch->clone.x), |
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tmp->y=y+freearr_y[i]+(tmp->arch==NULL?0:tmp->arch->clone.y); |
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tmp = insert_ob_in_map(op,op->map,originator,0); |
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if (tmp) return 0; |
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else return 1; |
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} |
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196 |
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/* |
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* Return value: 1 if object was destroyed, 0 otherwise. |
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* Modified so that instead of passing the 'originator' that had no |
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* real use, instead we pass the 'user' of the teleporter. All the |
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* callers know what they wanted to teleporter (move_teleporter or |
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* shop map code) |
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* tele_type is the type of teleporter we want to match against - |
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* currently, this is either set to SHOP_MAT or TELEPORTER. |
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* It is basically used so that shop_mats and normal teleporters can |
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* be used close to each other and not have the player put to the |
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* one of another type. |
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*/ |
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int teleport (object *teleporter, uint8 tele_type, object *user) |
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{ |
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object *altern; |
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int i,j,k,nrofalt=0; |
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object *other_teleporter, *tmp; |
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mapstruct *m; |
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sint16 sx, sy; |
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if(user==NULL) return 0; |
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if(user->head!=NULL) |
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user=user->head; |
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/* Find all other teleporters within range. This range |
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* should really be setable by some object attribute instead of |
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* using hard coded values. |
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*/ |
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for(i= -5;i<6;i++) |
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for(j= -5;j<6;j++) { |
226 |
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if(i==0&&j==0) |
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continue; |
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/* Perhaps this should be extended to support tiled maps */ |
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if(OUT_OF_REAL_MAP(teleporter->map,teleporter->x+i,teleporter->y+j)) |
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continue; |
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other_teleporter=get_map_ob(teleporter->map, |
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teleporter->x+i,teleporter->y+j); |
233 |
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234 |
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while (other_teleporter) { |
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if (other_teleporter->type == tele_type) break; |
236 |
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other_teleporter = other_teleporter->above; |
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} |
238 |
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if (other_teleporter && !(RANDOM() % ++nrofalt)) |
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altern = other_teleporter; |
240 |
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} |
241 |
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242 |
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if(!nrofalt) { |
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LOG(llevError,"No alternative teleporters around!\n"); |
244 |
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return 0; |
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} |
246 |
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other_teleporter=altern; |
248 |
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k=find_free_spot(user,other_teleporter->map, |
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other_teleporter->x,other_teleporter->y,1,9); |
250 |
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/* if k==-1, unable to find a free spot. If this is shop |
252 |
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* mat that the player is using, find someplace to move |
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* the player - otherwise, player can get trapped in the shops |
254 |
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* that appear in random dungeons. We basically just make |
255 |
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* sure the space isn't no pass (eg wall), and don't care |
256 |
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* about is alive. |
257 |
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*/ |
258 |
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if (k==-1) { |
259 |
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if (tele_type == SHOP_MAT && user->type == PLAYER) { |
260 |
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for (k=1; k<9; k++) { |
261 |
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if (get_map_flags(other_teleporter->map, &m, |
262 |
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other_teleporter->x + freearr_x[k], |
263 |
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other_teleporter->y + freearr_y[k], &sx,&sy) & |
264 |
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P_OUT_OF_MAP) continue; |
265 |
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266 |
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if (!OB_TYPE_MOVE_BLOCK(user, GET_MAP_MOVE_BLOCK(m, sx, sy))) break; |
267 |
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268 |
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} |
269 |
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if (k==9) { |
270 |
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LOG(llevError,"Shop mat %s (%d, %d) is in solid rock?\n", |
271 |
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other_teleporter->name, other_teleporter->x, other_teleporter->y); |
272 |
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return 0; |
273 |
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} |
274 |
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} |
275 |
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else return 0; |
276 |
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} |
277 |
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278 |
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remove_ob(user); |
279 |
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280 |
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/* Update location for the object */ |
281 |
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for(tmp=user;tmp!=NULL;tmp=tmp->more) { |
282 |
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tmp->x=other_teleporter->x+freearr_x[k]+ |
283 |
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(tmp->arch==NULL?0:tmp->arch->clone.x); |
284 |
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tmp->y=other_teleporter->y+freearr_y[k]+ |
285 |
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(tmp->arch==NULL?0:tmp->arch->clone.y); |
286 |
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} |
287 |
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tmp = insert_ob_in_map(user,other_teleporter->map,NULL,0); |
288 |
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return (tmp == NULL); |
289 |
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} |
290 |
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291 |
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void recursive_roll(object *op,int dir,object *pusher) { |
292 |
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if(!roll_ob(op,dir,pusher)) { |
293 |
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new_draw_info_format(NDI_UNIQUE, 0, pusher, |
294 |
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"You fail to push the %s.",query_name(op)); |
295 |
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return; |
296 |
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} |
297 |
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(void) move_ob(pusher,dir,pusher); |
298 |
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new_draw_info_format(NDI_BLACK, 0, pusher, |
299 |
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"You move the %s.",query_name(op)); |
300 |
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return; |
301 |
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} |
302 |
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303 |
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/* |
304 |
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* This is a new version of blocked, this one handles objects |
305 |
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* that can be passed through by monsters with the CAN_PASS_THRU defined. |
306 |
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* |
307 |
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* very new version handles also multipart objects |
308 |
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* This is currently only used for the boulder roll code. |
309 |
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* Returns 1 if object does not fit, 0 if it does. |
310 |
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*/ |
311 |
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312 |
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int try_fit (object *op, mapstruct *m, int x, int y) |
313 |
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{ |
314 |
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object *tmp, *more; |
315 |
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sint16 tx, ty; |
316 |
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int mflags; |
317 |
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mapstruct *m2; |
318 |
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319 |
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if (op->head) |
320 |
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op = op->head; |
321 |
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322 |
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for (more = op; more ; more = more->more) { |
323 |
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tx = x + more->x - op->x; |
324 |
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ty = y + more->y - op->y; |
325 |
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326 |
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mflags = get_map_flags(m, &m2, tx, ty, &tx, &ty); |
327 |
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328 |
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if (mflags & P_OUT_OF_MAP) |
329 |
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return 1; |
330 |
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331 |
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for (tmp = get_map_ob (m2, tx, ty); tmp; tmp=tmp->above) { |
332 |
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if (tmp->head == op || tmp == op) |
333 |
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continue; |
334 |
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335 |
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if ((QUERY_FLAG(tmp,FLAG_ALIVE) && tmp->type!=DOOR)) |
336 |
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return 1; |
337 |
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338 |
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if (OB_MOVE_BLOCK(op, tmp)) return 1; |
339 |
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340 |
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} |
341 |
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} |
342 |
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return 0; |
343 |
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} |
344 |
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345 |
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/* |
346 |
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* this is not perfect yet. |
347 |
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* it does not roll objects behind multipart objects properly. |
348 |
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* Support for rolling multipart objects is questionable. |
349 |
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*/ |
350 |
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351 |
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int roll_ob(object *op,int dir, object *pusher) { |
352 |
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object *tmp; |
353 |
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sint16 x, y; |
354 |
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int flags; |
355 |
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mapstruct *m; |
356 |
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MoveType move_block; |
357 |
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358 |
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if (op->head) |
359 |
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op = op->head; |
360 |
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361 |
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x=op->x+freearr_x[dir]; |
362 |
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y=op->y+freearr_y[dir]; |
363 |
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364 |
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if(!QUERY_FLAG(op,FLAG_CAN_ROLL) || |
365 |
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(op->weight && |
366 |
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random_roll(0, op->weight/50000-1, pusher, PREFER_LOW) > pusher->stats.Str)) |
367 |
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return 0; |
368 |
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369 |
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m = op->map; |
370 |
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flags = get_map_flags(m, &m, x, y, &x, &y); |
371 |
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372 |
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if (flags & (P_OUT_OF_MAP | P_IS_ALIVE)) |
373 |
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return 0; |
374 |
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375 |
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move_block = GET_MAP_MOVE_BLOCK(m, x, y); |
376 |
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377 |
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/* If the target space is not blocked, no need to look at the objects on it */ |
378 |
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if ((op->move_type & move_block) == op->move_type) { |
379 |
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for (tmp=get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) { |
380 |
|
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if (tmp->head == op) |
381 |
|
|
continue; |
382 |
|
|
if (OB_MOVE_BLOCK(op, tmp) && !roll_ob(tmp,dir,pusher)) |
383 |
|
|
return 0; |
384 |
|
|
} |
385 |
|
|
} |
386 |
|
|
if (try_fit (op, m, x, y)) |
387 |
|
|
return 0; |
388 |
|
|
|
389 |
|
|
remove_ob(op); |
390 |
|
|
for(tmp=op; tmp!=NULL; tmp=tmp->more) |
391 |
|
|
tmp->x+=freearr_x[dir],tmp->y+=freearr_y[dir]; |
392 |
|
|
insert_ob_in_map(op,op->map,pusher,0); |
393 |
|
|
return 1; |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
/* returns 1 if pushing invokes a attack, 0 when not */ |
397 |
|
|
int push_ob(object *who, int dir, object *pusher) { |
398 |
|
|
int str1, str2; |
399 |
|
|
object *owner; |
400 |
|
|
|
401 |
|
|
if (who->head != NULL) |
402 |
|
|
who = who->head; |
403 |
|
|
owner = get_owner(who); |
404 |
|
|
|
405 |
|
|
/* Wake up sleeping monsters that may be pushed */ |
406 |
|
|
CLEAR_FLAG(who,FLAG_SLEEP); |
407 |
|
|
|
408 |
|
|
/* player change place with his pets or summoned creature */ |
409 |
|
|
/* TODO: allow multi arch pushing. Can't be very difficult */ |
410 |
|
|
if (who->more == NULL |
411 |
|
|
#ifdef COZY_SERVER |
412 |
|
|
&& |
413 |
|
|
( |
414 |
|
|
(owner && owner->contr && pusher->contr |
415 |
|
|
&& same_party (owner->contr->party, pusher->contr->party)) |
416 |
|
|
|| owner == pusher |
417 |
|
|
) |
418 |
|
|
#else |
419 |
|
|
&& owner == pusher |
420 |
|
|
#endif |
421 |
|
|
) { |
422 |
|
|
int temp; |
423 |
|
|
mapstruct *m; |
424 |
|
|
|
425 |
|
|
remove_ob(who); |
426 |
|
|
remove_ob(pusher); |
427 |
|
|
temp = pusher->x; |
428 |
|
|
pusher->x = who->x; |
429 |
|
|
who->x = temp; |
430 |
|
|
|
431 |
|
|
temp = pusher->y; |
432 |
|
|
pusher->y = who->y; |
433 |
|
|
who->y = temp; |
434 |
|
|
|
435 |
|
|
m = pusher->map; |
436 |
|
|
pusher->map = who->map; |
437 |
|
|
who->map = m; |
438 |
|
|
|
439 |
|
|
insert_ob_in_map (who,who->map,pusher,0); |
440 |
|
|
insert_ob_in_map (pusher,pusher->map,pusher,0); |
441 |
|
|
return 0; |
442 |
|
|
} |
443 |
|
|
|
444 |
|
|
|
445 |
|
|
/* We want ONLY become enemy of evil, unaggressive monster. We must RUN in them */ |
446 |
|
|
/* In original we have here a unaggressive check only - that was the reason why */ |
447 |
|
|
/* we so often become an enemy of friendly monsters... */ |
448 |
|
|
/* funny: was they set to unaggressive 0 (= not so nice) they don't attack */ |
449 |
|
|
|
450 |
|
|
if(owner != pusher && pusher->type == PLAYER && who->type != PLAYER && |
451 |
|
|
!QUERY_FLAG(who,FLAG_FRIENDLY)&& !QUERY_FLAG(who,FLAG_NEUTRAL)) { |
452 |
|
|
if(pusher->contr->run_on) /* only when we run */ { |
453 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
454 |
|
|
"You start to attack %s !!",who->name); |
455 |
|
|
CLEAR_FLAG(who,FLAG_UNAGGRESSIVE); /* the sucker don't like you anymore */ |
456 |
|
|
who->enemy = pusher; |
457 |
|
|
return 1; |
458 |
|
|
} |
459 |
|
|
else |
460 |
|
|
{ |
461 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
462 |
|
|
"You avoid attacking %s .",who->name); |
463 |
|
|
} |
464 |
|
|
} |
465 |
|
|
|
466 |
|
|
/* now, lets test stand still. we NEVER can push stand_still monsters. */ |
467 |
|
|
if(QUERY_FLAG(who,FLAG_STAND_STILL)) |
468 |
|
|
{ |
469 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
470 |
|
|
"You can't push %s.",who->name); |
471 |
|
|
return 0; |
472 |
|
|
} |
473 |
|
|
|
474 |
|
|
/* This block is basically if you are pushing friendly but |
475 |
|
|
* non pet creaturs. |
476 |
|
|
* It basically does a random strength comparision to |
477 |
|
|
* determine if you can push someone around. Note that |
478 |
|
|
* this pushes the other person away - its not a swap. |
479 |
|
|
*/ |
480 |
|
|
|
481 |
|
|
str1 = (who->stats.Str>0?who->stats.Str:who->level); |
482 |
|
|
str2 = (pusher->stats.Str>0?pusher->stats.Str:pusher->level); |
483 |
|
|
if(QUERY_FLAG(who,FLAG_WIZ) || |
484 |
|
|
random_roll(str1, str1/2+str1*2, who, PREFER_HIGH) >= |
485 |
|
|
random_roll(str2, str2/2+str2*2, pusher, PREFER_HIGH) || |
486 |
|
|
!move_object(who,dir)) |
487 |
|
|
{ |
488 |
|
|
if (who ->type == PLAYER) { |
489 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, who, |
490 |
|
|
"%s tried to push you.",pusher->name); |
491 |
|
|
} |
492 |
|
|
return 0; |
493 |
|
|
} |
494 |
|
|
|
495 |
|
|
/* If we get here, the push succeeded. |
496 |
|
|
* Let everyone know the status. |
497 |
|
|
*/ |
498 |
|
|
if (who->type == PLAYER) { |
499 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, who, |
500 |
|
|
"%s pushed you.",pusher->name); |
501 |
|
|
} |
502 |
|
|
if (pusher->type == PLAYER) { |
503 |
|
|
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
504 |
|
|
"You pushed %s back.", who->name); |
505 |
|
|
} |
506 |
|
|
|
507 |
|
|
return 1; |
508 |
|
|
} |