/* SPDX-License-Identifier: MIT */
/*
 * konrmmap.c
 *
 * Copyright (c) 2026 KonAki
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "konrmmap.h"

#include <stddef.h>

/*** pages ***/

static int pageActive(const kon_rmPage_t *page, int mapId, int eventId, const kon_rmState_t *state)
{
	if (page->hasSwitch1 && !(state && state->switchOn && state->switchOn(page->switch1, state->user))) return 0;
	if (page->hasSwitch2 && !(state && state->switchOn && state->switchOn(page->switch2, state->user))) return 0;
	if (page->hasVariable) {
		int value = state && state->variable ? state->variable(page->variable, state->user) : 0;

		if (value < page->variableValue) return 0;
	}
	if (page->hasSelfSwitch && !(state && state->selfSwitch && state->selfSwitch(mapId, eventId, page->selfSwitch, state->user))) return 0;
	if (page->hasItem && !(state && state->hasItem && state->hasItem(page->item, state->user))) return 0;
	if (page->hasActor && !(state && state->hasActor && state->hasActor(page->actor, state->user))) return 0;
	return 1;
}

int kon_rmEventPage(const kon_rmEvent_t *event, int mapId, const kon_rmState_t *state)
{
	int i;

	if (!event || !event->pages) return -1;
	for (i = event->pageCount - 1; i >= 0; i--) {
		if (pageActive(&event->pages[i], mapId, event->id, state)) return i;
	}
	return -1;
}

/*** tiles ***/

int kon_rmTile(const kon_rmMap_t *map, int layer, int x, int y)
{
	if (!map || !map->tiles || layer < 0 || layer >= KON_RM_LAYERS) return 0;
	if (x < 0 || y < 0 || x >= map->width || y >= map->height) return 0;
	return map->tiles[((size_t)layer * (size_t)map->height + (size_t)y) * (size_t)map->width + (size_t)x];
}