164 lines
5.7 KiB
C++
164 lines
5.7 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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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 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 "engine.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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ParallaxBackground *pb = Object::cast_to<ParallaxBackground>(get_parent());
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if (pb && is_inside_tree()) {
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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, screen_offset);
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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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ParallaxBackground *pb = Object::cast_to<ParallaxBackground>(get_parent());
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if (pb && is_inside_tree()) {
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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, screen_offset);
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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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ParallaxBackground *pb = Object::cast_to<ParallaxBackground>(get_parent());
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if (pb) {
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RID c = pb->get_canvas();
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RID ci = get_canvas_item();
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Point2 mirrorScale = mirroring * get_scale();
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VisualServer::get_singleton()->canvas_set_item_mirroring(c, ci, mirrorScale);
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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_position();
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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, const Point2 &p_screen_offset) {
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screen_offset = p_screen_offset;
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if (!is_inside_tree())
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return;
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if (Engine::get_singleton()->is_editor_hint())
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return;
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Point2 new_ofs = (screen_offset + (p_offset - screen_offset) * motion_scale) + motion_offset * p_scale + orig_offset * p_scale;
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if (mirroring.x) {
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double den = mirroring.x * p_scale;
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double before = new_ofs.x;
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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_position(new_ofs);
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set_scale(Vector2(1, 1) * p_scale * orig_scale);
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_update_mirroring();
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}
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String ParallaxLayer::get_configuration_warning() const {
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if (!Object::cast_to<ParallaxBackground>(get_parent())) {
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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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ClassDB::bind_method(D_METHOD("set_motion_scale", "scale"), &ParallaxLayer::set_motion_scale);
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ClassDB::bind_method(D_METHOD("get_motion_scale"), &ParallaxLayer::get_motion_scale);
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ClassDB::bind_method(D_METHOD("set_motion_offset", "offset"), &ParallaxLayer::set_motion_offset);
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ClassDB::bind_method(D_METHOD("get_motion_offset"), &ParallaxLayer::get_motion_offset);
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ClassDB::bind_method(D_METHOD("set_mirroring", "mirror"), &ParallaxLayer::set_mirroring);
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ClassDB::bind_method(D_METHOD("get_mirroring"), &ParallaxLayer::get_mirroring);
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ADD_GROUP("Motion", "motion_");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion_scale"), "set_motion_scale", "get_motion_scale");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion_offset"), "set_motion_offset", "get_motion_offset");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "motion_mirroring"), "set_mirroring", "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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