95 |
|
|
96 |
|
|
97 |
|
int |
98 |
< |
o_default(OBJREC *o, RAY *r) /* default action is error */ |
98 |
> |
o_default(OBJREC *o, RAY *r) /* default action is error */ |
99 |
|
{ |
100 |
|
objerror(o, CONSISTENCY, "unexpected object call"); |
101 |
< |
/* unused call to load freeobjmem.o */ |
101 |
> |
/* unused call to load freeobjmem.o */ |
102 |
|
free_objs(0, 0); |
103 |
|
return(0); |
104 |
|
} |
105 |
|
|
106 |
|
|
107 |
< |
|
108 |
< |
OBJREC * /* find an object's actual material */ |
109 |
< |
findmaterial(OBJREC *o) |
107 |
> |
OBJREC * |
108 |
> |
findmaterial(OBJREC *o) /* find an object's actual material */ |
109 |
|
{ |
110 |
+ |
OBJECT mod = OVOID; |
111 |
+ |
|
112 |
|
while (!ismaterial(o->otype)) { |
113 |
|
if (o->otype == MOD_ALIAS && o->oargs.nsargs) { |
113 |
– |
OBJECT aobj; |
114 |
|
OBJREC *ao; |
115 |
< |
aobj = lastmod(objndx(o), o->oargs.sarg[0]); |
116 |
< |
if (aobj < 0) |
115 |
> |
if (mod < 0) |
116 |
> |
mod = objndx(o); |
117 |
> |
mod = lastmod(mod, o->oargs.sarg[0]); |
118 |
> |
if (mod < 0) |
119 |
|
objerror(o, USER, "bad reference"); |
120 |
< |
/* recursive check on alias branch */ |
121 |
< |
if ((ao = findmaterial(objptr(aobj))) != NULL) |
120 |
> |
/* recursive check on alias branch */ |
121 |
> |
if ((ao = findmaterial(objptr(mod))) != NULL) |
122 |
|
return(ao); |
123 |
|
} |
124 |
|
if (o->omod == OVOID) { |
125 |
< |
/* assume unmodified mixture is material */ |
125 |
> |
/* void mixture de facto material? */ |
126 |
|
if (ismixture(o->otype)) |
127 |
|
break; |
128 |
< |
return(NULL); |
128 |
> |
return(NULL); /* else no material found */ |
129 |
|
} |
130 |
< |
o = objptr(o->omod); |
130 |
> |
o = objptr(mod = o->omod); |
131 |
|
} |
132 |
|
return(o); |
133 |
|
} |