The change in #10524 subtly changes the behavior of set_motion_scale() and set_motion_offset() if the ParallaxLayer does not have a parent node. Previously it would still set the corresponding property, but after this change the property change would be discarded. I'm not entirely sure if this actually matters as there doesn't appear to be any code that picks up this change if the ParallaxLayer gets re-parented later, but it's better to not change behavior regardless.
163 lines
5.5 KiB
C++
163 lines
5.5 KiB
C++
/*************************************************************************/
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/* parallax_layer.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "parallax_layer.h"
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#include "parallax_background.h"
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void ParallaxLayer::set_motion_scale(const Size2 &p_scale) {
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motion_scale = p_scale;
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if (!get_parent())
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return;
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ParallaxBackground *pb = get_parent()->cast_to<ParallaxBackground>();
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if (is_inside_tree() && pb) {
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Vector2 ofs = pb->get_final_offset();
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float scale = pb->get_scroll_scale();
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set_base_offset_and_scale(ofs, scale);
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}
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}
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Size2 ParallaxLayer::get_motion_scale() const {
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return motion_scale;
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}
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void ParallaxLayer::set_motion_offset(const Size2 &p_offset) {
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motion_offset = p_offset;
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if (!get_parent())
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return;
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ParallaxBackground *pb = get_parent()->cast_to<ParallaxBackground>();
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if (is_inside_tree() && pb) {
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Vector2 ofs = pb->get_final_offset();
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float scale = pb->get_scroll_scale();
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set_base_offset_and_scale(ofs, scale);
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}
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}
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Size2 ParallaxLayer::get_motion_offset() const {
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return motion_offset;
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}
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void ParallaxLayer::_update_mirroring() {
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if (!get_parent())
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return;
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ParallaxBackground *pb = get_parent()->cast_to<ParallaxBackground>();
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if (pb) {
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RID c = pb->get_world_2d()->get_canvas();
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RID ci = get_canvas_item();
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VisualServer::get_singleton()->canvas_set_item_mirroring(c, ci, mirroring);
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}
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}
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void ParallaxLayer::set_mirroring(const Size2 &p_mirroring) {
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mirroring = p_mirroring;
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if (mirroring.x < 0)
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mirroring.x = 0;
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if (mirroring.y < 0)
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mirroring.y = 0;
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_update_mirroring();
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}
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Size2 ParallaxLayer::get_mirroring() const {
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return mirroring;
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}
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void ParallaxLayer::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_ENTER_TREE: {
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orig_offset = get_pos();
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orig_scale = get_scale();
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_update_mirroring();
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} break;
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}
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}
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void ParallaxLayer::set_base_offset_and_scale(const Point2 &p_offset, float p_scale) {
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if (!is_inside_tree())
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return;
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if (get_tree()->is_editor_hint())
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return;
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Point2 new_ofs = ((orig_offset + p_offset) * motion_scale) * p_scale + motion_offset;
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if (mirroring.x) {
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double den = mirroring.x * p_scale;
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new_ofs.x -= den * ceil(new_ofs.x / den);
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}
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if (mirroring.y) {
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double den = mirroring.y * p_scale;
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new_ofs.y -= den * ceil(new_ofs.y / den);
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}
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set_pos(new_ofs);
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set_scale(Vector2(1, 1) * p_scale);
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}
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String ParallaxLayer::get_configuration_warning() const {
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if (!get_parent() || !get_parent()->cast_to<ParallaxBackground>()) {
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return TTR("ParallaxLayer node only works when set as child of a ParallaxBackground node.");
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}
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return String();
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}
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void ParallaxLayer::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("set_motion_scale", "scale"), &ParallaxLayer::set_motion_scale);
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ObjectTypeDB::bind_method(_MD("get_motion_scale"), &ParallaxLayer::get_motion_scale);
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ObjectTypeDB::bind_method(_MD("set_motion_offset", "offset"), &ParallaxLayer::set_motion_offset);
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ObjectTypeDB::bind_method(_MD("get_motion_offset"), &ParallaxLayer::get_motion_offset);
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ObjectTypeDB::bind_method(_MD("set_mirroring", "mirror"), &ParallaxLayer::set_mirroring);
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ObjectTypeDB::bind_method(_MD("get_mirroring"), &ParallaxLayer::get_mirroring);
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion/scale"), _SCS("set_motion_scale"), _SCS("get_motion_scale"));
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion/offset"), _SCS("set_motion_offset"), _SCS("get_motion_offset"));
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion/mirroring"), _SCS("set_mirroring"), _SCS("get_mirroring"));
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}
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ParallaxLayer::ParallaxLayer() {
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motion_scale = Size2(1, 1);
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}
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