tip/src/behavior.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * Copyright 2025 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 */

#include "ascension/behavior.h"
#include "ascension/error.h"

#include <cx/array_list.h>

static void asc_behavior_destroy(void *b) {
    AscBehavior *behavior = b;
    if (behavior->destroy_func) {
        behavior->destroy_func(behavior);
    }
}

static CxList *asc_behavior_new_list(void) {
    // TODO: add comparator when we know how to identifier behaviors in order to remove them
    CxList *list = cxArrayListCreate(NULL, NULL, sizeof(AscBehavior), 4);
    cxDefineDestructor(list, asc_behavior_destroy);
    return list;
}

AscBehavior *asc_behavior_add_impl(AscSceneNode *node, struct asc_behavior_create_args args) {
    // TODO: replace cxListAdd() with cxListEmplace() when upgrading to UCX 3.2
    AscBehavior behavior = {0};
    behavior.node = node;
    behavior.func = args.func;
    behavior.destroy_func = args.destroy_func;
    behavior.data = args.data;
    if (node->behaviors == NULL) {
        node->behaviors = asc_behavior_new_list();
    }
    if (cxListAdd(node->behaviors, &behavior)) {
        // TODO: output ID of node once we have implemented that
        asc_error("Failed to add behavior to scene node.");
        return NULL;
    }
    // TODO: replace with cxListLast() when upgrading to UCX 3.2
    return cxListAt(node->behaviors, cxListSize(node->behaviors) - 1);
}