src/corelib/object.h

@@ -26,7 +26,7 @@ object_t object_default();
 void object_draw_sprite(object_t* object);
 static inline
 int object_is_valid(object_t* object) {
-	return object == NULL || object->active == 0;
+	return object != NULL && object->active <= 0;
 }
 
 #endif /* _object_h */

src/corelib/world.c

@@ -1,6 +1,5 @@
 #include "world.h"
 #include "memory.h"
-#include "assert.h"
 #include "math/vec.h"
 #include "object.h"
 
@@ -19,19 +18,18 @@ int _expand_world() {
 		new_num = 16;
 	}
 	object_t** new_list = realloc(_world_objects.objects, new_num * sizeof(object_t*));
-
 	if(new_list == NULL) {
-		assert(!"ERROR: Out of memory");
-		exit(-10);
-	}
+		printf("ERROR: failed to expand world when requesting additional objects\n");
+		return 0;
+	} else {
+		for(size_t i = _world_objects.num; i < new_num; ++i) {
+			new_list[i] = NULL;
+		}
 
-	for(size_t i = _world_objects.num; i < new_num; ++i) {
-		new_list[i] = NULL;
+		_world_objects.objects = new_list;
+		_world_objects.num = new_num;
+		return 1;
 	}
-
-	_world_objects.objects = new_list;
-	_world_objects.num = new_num;
-	return 1;
 }
 
 static inline
@@ -42,8 +40,11 @@ size_t _find_free_object() {
 		}
 	}
 	size_t num = _world_objects.num;
-	_expand_world();
-	return num;
+	if(_expand_world()) {
+		return num;
+	} else {
+		return NULL;
+	}
 }
 
 void world_clear() {