#include "readwrite.h"
#include "roguelike.h"
+static struct ChainMapObject * get_next_cmo (void *, char *, size_t, struct ChainMapObject *);
+
extern void readwrite_map_objects_dummy (void * dummy, FILE * file) {
// Dummy function for calls of (write|read)_map_objects on map objects without specific attributes.
; }
struct Monster * monster = (struct Monster *) start;
monster->hitpoints = fgetc(file); }
+static struct ChainMapObject * get_next_cmo (void * start, char * still_at_start, size_t size, struct ChainMapObject * cmo) {
+// Return pointer to map object of size "size". If first in chain ("still_at_start"), make "start" point to it.
+ if (*still_at_start) {
+ struct ChainMapObject * * z = start;
+ cmo = malloc(size);
+ * z = cmo;
+ *still_at_start = 0; }
+ else {
+ cmo->next = malloc(size);
+ cmo = cmo->next; }
+ return cmo; }
+
extern void read_map_objects (void * start, FILE * file, size_t size, void (* f) (void *, FILE *) ) {
// Read from file chain of map objects starting at start, use f() for object-type specific data.
struct ChainMapObject * cmo;
- struct ChainMapObject * * z = start;
uint16_t test;
char still_at_start = 1;
while (1) {
test = read_uint16_bigendian(file);
if (0 == test)
break;
- if (still_at_start) {
- cmo = malloc(size);
- * z = cmo;
- still_at_start = 0; }
- else {
- cmo->next = malloc(size);
- cmo = cmo->next; }
+ cmo = get_next_cmo(start, &still_at_start, size, cmo);
cmo->pos.y = test - 1;
cmo->pos.x = read_uint16_bigendian(file) - 1;
cmo->name = fgetc(file);
// Build chain of n map objects starting at start, use f() for object-specific data.
unsigned char i;
struct ChainMapObject * cmo;
- struct ChainMapObject * * z = start;
char still_at_start = 1;
for (i = 0; i < n; i++) {
- if (still_at_start) {
- cmo = malloc(size);
- * z = cmo;
- still_at_start = 0; }
- else {
- cmo->next = malloc(size);
- cmo = cmo->next; }
+ cmo = get_next_cmo(start, &still_at_start, size, cmo);
cmo->pos = find_passable_pos(map);
- f(cmo); }
+ f (cmo); }
if (!still_at_start)
cmo->next = 0; }