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72 lines
1.5 KiB
72 lines
1.5 KiB
#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include "object.h"
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#include <assert.h>
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void Object_destroy(void *self)
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{
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Object *obj = self;
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if(obj) {
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if(obj->description) free(obj->description);
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free(obj);
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}
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}
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void Object_describe(void *self)
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{
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assert(self != NULL);
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Object *obj = self;
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printf("%s.\n", obj->description);
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}
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int Object_init(void *self)
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{
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// do nothing really
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return 1;
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}
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void *Object_move(void *self, Direction direction)
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{
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printf("You can't go that direction.\n");
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return NULL;
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}
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int Object_attack(void *self, int damage)
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{
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printf("You can't attack that.\n");
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return 0;
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}
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void *Object_new(size_t size, Object proto, char *description)
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{
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assert(description != NULL);
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// setup the default functions in case they aren't set
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if(!proto.init) proto.init = Object_init;
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if(!proto.describe) proto.describe = Object_describe;
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if(!proto.destroy) proto.destroy = Object_destroy;
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if(!proto.attack) proto.attack = Object_attack;
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if(!proto.move) proto.move = Object_move;
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// this seems weird, but we can make a struct of one size,
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// then point a different pointer at it to "cast" it
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Object *el = calloc(1, size);
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assert(el != NULL);
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*el = proto;
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// copy the description over
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el->description = strdup(description);
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// initialize it with whatever init we were given
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if(!el->init(el)) {
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// looks like it didn't initialize properly
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el->destroy(el);
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return NULL;
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} else {
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// all done, we made an object of any type
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return el;
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}
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}
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