Initial commit

engines/grim/costume/component.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "engines/grim/costume/component.h"
+#include "engines/grim/colormap.h"
+#include "engines/grim/costume.h"
+
+namespace Grim {
+
+Component::Component(Component *p, int parentID, const char *name, tag32 t) :
+		_visible(true), _tag(t), _parentID(parentID), _name(name),
+		_previousCmap(nullptr), _cmap(nullptr), _cost(nullptr) {
+	setParent(p);
+}
+
+Component::~Component() {
+	if (_parent)
+		_parent->removeChild(this);
+
+	Component *child = _child;
+	while (child) {
+		child->_parent = nullptr;
+		child = child->_sibling;
+	}
+}
+
+void Component::setColormap(CMap *c) {
+	if (c)
+		_cmap = c;
+	if (getCMap()) {
+		resetHierCMap();
+	}
+}
+
+bool Component::isVisible() {
+	if (_visible && _parent)
+		return _parent->isVisible();
+	return _visible;
+}
+
+CMap *Component::getCMap() {
+	if (!_cmap && _previousCmap)
+		return _previousCmap;
+	else if (!_cmap && _parent)
+		return _parent->getCMap();
+	else if (!_cmap && !_parent && _cost)
+		return _cost->getCMap();
+	else
+		return _cmap;
+}
+
+void Component::setParent(Component *newParent) {
+	_parent = newParent;
+	_child = nullptr;
+	_sibling = nullptr;
+	if (_parent) {
+		_sibling = _parent->_child;
+		_parent->_child = this;
+	}
+}
+
+void Component::removeChild(Component *child) {
+	Component **childPos = &_child;
+	while (*childPos && *childPos != child)
+		childPos = &(*childPos)->_sibling;
+	if (*childPos) {
+		*childPos = child->_sibling;
+		child->_parent = nullptr;
+	}
+}
+
+void Component::resetHierCMap() {
+	resetColormap();
+
+	Component *child = _child;
+	while (child) {
+		child->resetHierCMap();
+		child = child->_sibling;
+	}
+}
+
+} // end of namespace Grim