| 1 |
/* |
| 2 |
* static char *rcsid_move_c = |
| 3 |
* "$Id: move.c,v 1.38 2006/01/11 08:05:36 mwedel Exp $"; |
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*/ |
| 5 |
|
| 6 |
/* |
| 7 |
CrossFire, A Multiplayer game for X-windows |
| 8 |
|
| 9 |
Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
| 11 |
|
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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 |
| 15 |
(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 |
| 23 |
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 author can be reached via e-mail to crossfire-devel@real-time.com |
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*/ |
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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 |
| 33 |
|
| 34 |
/* |
| 35 |
* 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, |
| 37 |
* otherwise 1. |
| 38 |
* 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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|
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int move_object(object *op, int dir) { |
| 43 |
return move_ob(op, dir, op); |
| 44 |
} |
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|
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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 |
| 49 |
* can be different if originator is causing op to |
| 50 |
* move (originator is pushing op) |
| 51 |
* returns 0 if the object is not able to move to the |
| 52 |
* desired space, 1 otherwise (in which case we also |
| 53 |
* move the object accordingly. This function is |
| 54 |
* very similiar to move_object. |
| 55 |
*/ |
| 56 |
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; |
| 61 |
mapstruct *m; |
| 62 |
int mflags; |
| 63 |
|
| 64 |
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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|
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m = op->map; |
| 70 |
mflags = get_map_flags(m, &m, newx, newy, &newx, &newy); |
| 71 |
|
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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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*/ |
| 75 |
if (mflags & P_OUT_OF_MAP) return 0; |
| 76 |
|
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|
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/* Is this space blocked? Players with wizpass are immune to |
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* this condition. |
| 80 |
*/ |
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if(blocked_link(op, m, newx, newy) && |
| 82 |
!QUERY_FLAG(op, FLAG_WIZPASS)) |
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return 0; |
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|
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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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|
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op->direction = dir; |
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|
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if(op->will_apply&4) |
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check_earthwalls(op,m, newx,newy); |
| 96 |
if(op->will_apply&8) |
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check_doors(op,m, newx,newy); |
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|
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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 |
| 101 |
* guess I have is that check_doors above ran into a trap, killing the |
| 102 |
* 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 |
| 106 |
* migrate the problem someplace else. |
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*/ |
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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; |
| 113 |
} |
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|
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/* If this is a tail portion, just want to tell caller that move is |
| 116 |
* ok - the caller will deal with actual object removal/insertion |
| 117 |
*/ |
| 118 |
if(op->head) |
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return 1; |
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|
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remove_ob(op); |
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|
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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) { |
| 128 |
tmp->x = newx + tmp->arch->clone.x; |
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tmp->y = newy + tmp->arch->clone.y; |
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tmp->map = m; |
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} |
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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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|
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/* Hmmm. Should be possible for multispace players now */ |
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if (op->type==PLAYER) { |
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esrv_map_scroll(&op->contr->socket, freearr_x[dir],freearr_y[dir]); |
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op->contr->socket.update_look=1; |
| 140 |
op->contr->socket.look_position=0; |
| 141 |
} |
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|
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return 1; /* this shouldn't be reached */ |
| 144 |
} |
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|
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|
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/* |
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* transfer_ob(): Move an object (even linked objects) to another spot |
| 149 |
* on the same map. |
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* |
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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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* |
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* Return value: 1 if object was destroyed, 0 otherwise. |
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*/ |
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|
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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; |
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|
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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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|
| 169 |
if (i==-1) |
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return 0; /* No free spot */ |
| 171 |
|
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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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|
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tmp = insert_ob_in_map(op,op->map,originator,0); |
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if (op && op->type == PLAYER) MapNewmapCmd(op->contr); |
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if (tmp) return 0; |
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else return 1; |
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} |
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|
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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 |
| 189 |
* 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[120]; /* Better use c/malloc here in the future */ |
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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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|
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if(user==NULL) return 0; |
| 206 |
if(user->head!=NULL) |
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user=user->head; |
| 208 |
|
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/* Find all other teleporters within range. This range |
| 210 |
* should really be setable by some object attribute instead of |
| 211 |
* using hard coded values. |
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*/ |
| 213 |
for(i= -5;i<6;i++) |
| 214 |
for(j= -5;j<6;j++) { |
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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); |
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|
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while (other_teleporter) { |
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if (other_teleporter->type == tele_type) break; |
| 225 |
other_teleporter = other_teleporter->above; |
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} |
| 227 |
if (other_teleporter) |
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altern[nrofalt++]=other_teleporter; |
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} |
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|
| 231 |
if(!nrofalt) { |
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LOG(llevError,"No alternative teleporters around!\n"); |
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return 0; |
| 234 |
} |
| 235 |
|
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other_teleporter=altern[RANDOM()%nrofalt]; |
| 237 |
k=find_free_spot(user,other_teleporter->map, |
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other_teleporter->x,other_teleporter->y,1,9); |
| 239 |
|
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/* if k==-1, unable to find a free spot. If this is shop |
| 241 |
* mat that the player is using, find someplace to move |
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* the player - otherwise, player can get trapped in the shops |
| 243 |
* that appear in random dungeons. We basically just make |
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* sure the space isn't no pass (eg wall), and don't care |
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* about is alive. |
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*/ |
| 247 |
if (k==-1) { |
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if (tele_type == SHOP_MAT && user->type == PLAYER) { |
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for (k=1; k<9; k++) { |
| 250 |
if (get_map_flags(other_teleporter->map, &m, |
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other_teleporter->x + freearr_x[k], |
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other_teleporter->y + freearr_y[k], &sx,&sy) & |
| 253 |
P_OUT_OF_MAP) continue; |
| 254 |
|
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if (!OB_TYPE_MOVE_BLOCK(user, GET_MAP_MOVE_BLOCK(m, sx, sy))) break; |
| 256 |
|
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} |
| 258 |
if (k==9) { |
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LOG(llevError,"Shop mat %s (%d, %d) is in solid rock?\n", |
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other_teleporter->name, other_teleporter->x, other_teleporter->y); |
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return 0; |
| 262 |
} |
| 263 |
} |
| 264 |
else return 0; |
| 265 |
} |
| 266 |
|
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remove_ob(user); |
| 268 |
|
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/* Update location for the object */ |
| 270 |
for(tmp=user;tmp!=NULL;tmp=tmp->more) { |
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tmp->x=other_teleporter->x+freearr_x[k]+ |
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(tmp->arch==NULL?0:tmp->arch->clone.x); |
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tmp->y=other_teleporter->y+freearr_y[k]+ |
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(tmp->arch==NULL?0:tmp->arch->clone.y); |
| 275 |
} |
| 276 |
tmp = insert_ob_in_map(user,other_teleporter->map,NULL,0); |
| 277 |
if (tmp && tmp->type == PLAYER) MapNewmapCmd(tmp->contr); |
| 278 |
return (tmp == NULL); |
| 279 |
} |
| 280 |
|
| 281 |
void recursive_roll(object *op,int dir,object *pusher) { |
| 282 |
if(!roll_ob(op,dir,pusher)) { |
| 283 |
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
| 284 |
"You fail to push the %s.",query_name(op)); |
| 285 |
return; |
| 286 |
} |
| 287 |
(void) move_ob(pusher,dir,pusher); |
| 288 |
new_draw_info_format(NDI_BLACK, 0, pusher, |
| 289 |
"You move the %s.",query_name(op)); |
| 290 |
return; |
| 291 |
} |
| 292 |
|
| 293 |
/* |
| 294 |
* This is a new version of blocked, this one handles objects |
| 295 |
* that can be passed through by monsters with the CAN_PASS_THRU defined. |
| 296 |
* |
| 297 |
* very new version handles also multipart objects |
| 298 |
* This is currently only used for the boulder roll code. |
| 299 |
* Returns 1 if object does not fit, 0 if it does. |
| 300 |
*/ |
| 301 |
|
| 302 |
int try_fit (object *op, mapstruct *m, int x, int y) |
| 303 |
{ |
| 304 |
object *tmp, *more; |
| 305 |
sint16 tx, ty; |
| 306 |
int mflags; |
| 307 |
mapstruct *m2; |
| 308 |
|
| 309 |
if (op->head) |
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op = op->head; |
| 311 |
|
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for (more = op; more ; more = more->more) { |
| 313 |
tx = x + more->x - op->x; |
| 314 |
ty = y + more->y - op->y; |
| 315 |
|
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mflags = get_map_flags(m, &m2, tx, ty, &tx, &ty); |
| 317 |
|
| 318 |
if (mflags & P_OUT_OF_MAP) |
| 319 |
return 1; |
| 320 |
|
| 321 |
for (tmp = get_map_ob (m2, tx, ty); tmp; tmp=tmp->above) { |
| 322 |
if (tmp->head == op || tmp == op) |
| 323 |
continue; |
| 324 |
|
| 325 |
if ((QUERY_FLAG(tmp,FLAG_ALIVE) && tmp->type!=DOOR)) |
| 326 |
return 1; |
| 327 |
|
| 328 |
if (OB_MOVE_BLOCK(op, tmp)) return 1; |
| 329 |
|
| 330 |
} |
| 331 |
} |
| 332 |
return 0; |
| 333 |
} |
| 334 |
|
| 335 |
/* |
| 336 |
* this is not perfect yet. |
| 337 |
* it does not roll objects behind multipart objects properly. |
| 338 |
* Support for rolling multipart objects is questionable. |
| 339 |
*/ |
| 340 |
|
| 341 |
int roll_ob(object *op,int dir, object *pusher) { |
| 342 |
object *tmp; |
| 343 |
sint16 x, y; |
| 344 |
int flags; |
| 345 |
mapstruct *m; |
| 346 |
MoveType move_block; |
| 347 |
|
| 348 |
if (op->head) |
| 349 |
op = op->head; |
| 350 |
|
| 351 |
x=op->x+freearr_x[dir]; |
| 352 |
y=op->y+freearr_y[dir]; |
| 353 |
|
| 354 |
if(!QUERY_FLAG(op,FLAG_CAN_ROLL) || |
| 355 |
(op->weight && |
| 356 |
random_roll(0, op->weight/50000-1, pusher, PREFER_LOW) > pusher->stats.Str)) |
| 357 |
return 0; |
| 358 |
|
| 359 |
m = op->map; |
| 360 |
flags = get_map_flags(m, &m, x, y, &x, &y); |
| 361 |
|
| 362 |
if (flags & (P_OUT_OF_MAP | P_IS_ALIVE)) |
| 363 |
return 0; |
| 364 |
|
| 365 |
move_block = GET_MAP_MOVE_BLOCK(m, x, y); |
| 366 |
|
| 367 |
/* If the target space is not blocked, no need to look at the objects on it */ |
| 368 |
if ((op->move_type & move_block) == op->move_type) { |
| 369 |
for (tmp=get_map_ob(m, x, y); tmp!=NULL; tmp=tmp->above) { |
| 370 |
if (tmp->head == op) |
| 371 |
continue; |
| 372 |
if (OB_MOVE_BLOCK(op, tmp) && !roll_ob(tmp,dir,pusher)) |
| 373 |
return 0; |
| 374 |
} |
| 375 |
} |
| 376 |
if (try_fit (op, m, x, y)) |
| 377 |
return 0; |
| 378 |
|
| 379 |
remove_ob(op); |
| 380 |
for(tmp=op; tmp!=NULL; tmp=tmp->more) |
| 381 |
tmp->x+=freearr_x[dir],tmp->y+=freearr_y[dir]; |
| 382 |
insert_ob_in_map(op,op->map,pusher,0); |
| 383 |
return 1; |
| 384 |
} |
| 385 |
|
| 386 |
/* returns 1 if pushing invokes a attack, 0 when not */ |
| 387 |
int push_ob(object *who, int dir, object *pusher) { |
| 388 |
int str1, str2; |
| 389 |
object *owner; |
| 390 |
|
| 391 |
if (who->head != NULL) |
| 392 |
who = who->head; |
| 393 |
owner = get_owner(who); |
| 394 |
|
| 395 |
/* Wake up sleeping monsters that may be pushed */ |
| 396 |
CLEAR_FLAG(who,FLAG_SLEEP); |
| 397 |
|
| 398 |
/* player change place with his pets or summoned creature */ |
| 399 |
/* TODO: allow multi arch pushing. Can't be very difficult */ |
| 400 |
if (who->more == NULL && owner == pusher) { |
| 401 |
int temp; |
| 402 |
mapstruct *m; |
| 403 |
|
| 404 |
remove_ob(who); |
| 405 |
remove_ob(pusher); |
| 406 |
temp = pusher->x; |
| 407 |
pusher->x = who->x; |
| 408 |
who->x = temp; |
| 409 |
|
| 410 |
temp = pusher->y; |
| 411 |
pusher->y = who->y; |
| 412 |
who->y = temp; |
| 413 |
|
| 414 |
m = pusher->map; |
| 415 |
pusher->map = who->map; |
| 416 |
who->map = m; |
| 417 |
|
| 418 |
insert_ob_in_map (who,who->map,pusher,0); |
| 419 |
insert_ob_in_map (pusher,pusher->map,pusher,0); |
| 420 |
|
| 421 |
/* we presume that if the player is pushing his put, he moved in |
| 422 |
* direction 'dir'. I can' think of any case where this would not be |
| 423 |
* the case. Putting the map_scroll should also improve performance some. |
| 424 |
*/ |
| 425 |
if (pusher->type == PLAYER ) { |
| 426 |
esrv_map_scroll(&pusher->contr->socket, freearr_x[dir],freearr_y[dir]); |
| 427 |
pusher->contr->socket.update_look=1; |
| 428 |
pusher->contr->socket.look_position=0; |
| 429 |
} |
| 430 |
return 0; |
| 431 |
} |
| 432 |
|
| 433 |
|
| 434 |
/* We want ONLY become enemy of evil, unaggressive monster. We must RUN in them */ |
| 435 |
/* In original we have here a unaggressive check only - that was the reason why */ |
| 436 |
/* we so often become an enemy of friendly monsters... */ |
| 437 |
/* funny: was they set to unaggressive 0 (= not so nice) they don't attack */ |
| 438 |
|
| 439 |
if(owner != pusher && pusher->type == PLAYER && who->type != PLAYER && |
| 440 |
!QUERY_FLAG(who,FLAG_FRIENDLY)&& !QUERY_FLAG(who,FLAG_NEUTRAL)) { |
| 441 |
if(pusher->contr->run_on) /* only when we run */ { |
| 442 |
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
| 443 |
"You start to attack %s !!",who->name); |
| 444 |
CLEAR_FLAG(who,FLAG_UNAGGRESSIVE); /* the sucker don't like you anymore */ |
| 445 |
who->enemy = pusher; |
| 446 |
return 1; |
| 447 |
} |
| 448 |
else |
| 449 |
{ |
| 450 |
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
| 451 |
"You avoid attacking %s .",who->name); |
| 452 |
} |
| 453 |
} |
| 454 |
|
| 455 |
/* now, lets test stand still. we NEVER can push stand_still monsters. */ |
| 456 |
if(QUERY_FLAG(who,FLAG_STAND_STILL)) |
| 457 |
{ |
| 458 |
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
| 459 |
"You can't push %s.",who->name); |
| 460 |
return 0; |
| 461 |
} |
| 462 |
|
| 463 |
/* This block is basically if you are pushing friendly but |
| 464 |
* non pet creaturs. |
| 465 |
* It basically does a random strength comparision to |
| 466 |
* determine if you can push someone around. Note that |
| 467 |
* this pushes the other person away - its not a swap. |
| 468 |
*/ |
| 469 |
|
| 470 |
str1 = (who->stats.Str>0?who->stats.Str:who->level); |
| 471 |
str2 = (pusher->stats.Str>0?pusher->stats.Str:pusher->level); |
| 472 |
if(QUERY_FLAG(who,FLAG_WIZ) || |
| 473 |
random_roll(str1, str1/2+str1*2, who, PREFER_HIGH) >= |
| 474 |
random_roll(str2, str2/2+str2*2, pusher, PREFER_HIGH) || |
| 475 |
!move_object(who,dir)) |
| 476 |
{ |
| 477 |
if (who ->type == PLAYER) { |
| 478 |
new_draw_info_format(NDI_UNIQUE, 0, who, |
| 479 |
"%s tried to push you.",pusher->name); |
| 480 |
} |
| 481 |
return 0; |
| 482 |
} |
| 483 |
|
| 484 |
/* If we get here, the push succeeded. |
| 485 |
* Let everyone know the status. |
| 486 |
*/ |
| 487 |
if (who->type == PLAYER) { |
| 488 |
new_draw_info_format(NDI_UNIQUE, 0, who, |
| 489 |
"%s pushed you.",pusher->name); |
| 490 |
} |
| 491 |
if (pusher->type == PLAYER) { |
| 492 |
new_draw_info_format(NDI_UNIQUE, 0, pusher, |
| 493 |
"You pushed %s back.", who->name); |
| 494 |
} |
| 495 |
|
| 496 |
return 1; |
| 497 |
} |
