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https://github.com/godotengine/godot
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211 lines
7 KiB
C++
211 lines
7 KiB
C++
/*************************************************************************/
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/* parallax_background.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_background.h"
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#include "parallax_layer.h"
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void ParallaxBackground::_notification(int p_what) {
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switch (p_what) {
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case NOTIFICATION_ENTER_TREE: {
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group_name = "__cameras_" + itos(get_viewport().get_id());
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add_to_group(group_name);
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} break;
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case NOTIFICATION_EXIT_TREE: {
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remove_from_group(group_name);
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} break;
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}
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}
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void ParallaxBackground::_camera_moved(const Transform2D &p_transform, const Point2 &p_screen_offset) {
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screen_offset = p_screen_offset;
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set_scroll_scale(p_transform.get_scale().dot(Vector2(0.5, 0.5)));
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set_scroll_offset(p_transform.get_origin());
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}
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void ParallaxBackground::set_scroll_scale(float p_scale) {
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scale = p_scale;
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}
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float ParallaxBackground::get_scroll_scale() const {
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return scale;
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}
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void ParallaxBackground::set_scroll_offset(const Point2 &p_ofs) {
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offset = p_ofs;
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_update_scroll();
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}
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void ParallaxBackground::_update_scroll() {
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if (!is_inside_tree())
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return;
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Vector2 ofs = base_offset + offset * base_scale;
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Size2 vps = get_viewport_size();
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ofs = -ofs;
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if (limit_begin.x < limit_end.x) {
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if (ofs.x < limit_begin.x)
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ofs.x = limit_begin.x;
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else if (ofs.x + vps.x > limit_end.x)
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ofs.x = limit_end.x - vps.x;
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}
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if (limit_begin.y < limit_end.y) {
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if (ofs.y < limit_begin.y)
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ofs.y = limit_begin.y;
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else if (ofs.y + vps.y > limit_end.y)
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ofs.y = limit_end.y - vps.y;
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}
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ofs = -ofs;
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final_offset = ofs;
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for (int i = 0; i < get_child_count(); i++) {
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ParallaxLayer *l = Object::cast_to<ParallaxLayer>(get_child(i));
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if (!l)
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continue;
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if (ignore_camera_zoom)
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l->set_base_offset_and_scale(ofs, 1.0, screen_offset);
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else
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l->set_base_offset_and_scale(ofs, scale, screen_offset);
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}
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}
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Point2 ParallaxBackground::get_scroll_offset() const {
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return offset;
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}
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void ParallaxBackground::set_scroll_base_offset(const Point2 &p_ofs) {
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base_offset = p_ofs;
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_update_scroll();
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}
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Point2 ParallaxBackground::get_scroll_base_offset() const {
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return base_offset;
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}
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void ParallaxBackground::set_scroll_base_scale(const Point2 &p_ofs) {
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base_scale = p_ofs;
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_update_scroll();
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}
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Point2 ParallaxBackground::get_scroll_base_scale() const {
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return base_scale;
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}
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void ParallaxBackground::set_limit_begin(const Point2 &p_ofs) {
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limit_begin = p_ofs;
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_update_scroll();
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}
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Point2 ParallaxBackground::get_limit_begin() const {
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return limit_begin;
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}
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void ParallaxBackground::set_limit_end(const Point2 &p_ofs) {
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limit_end = p_ofs;
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_update_scroll();
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}
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Point2 ParallaxBackground::get_limit_end() const {
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return limit_end;
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}
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void ParallaxBackground::set_ignore_camera_zoom(bool ignore) {
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ignore_camera_zoom = ignore;
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}
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bool ParallaxBackground::is_ignore_camera_zoom() {
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return ignore_camera_zoom;
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}
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Vector2 ParallaxBackground::get_final_offset() const {
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return final_offset;
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}
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void ParallaxBackground::_bind_methods() {
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ClassDB::bind_method(D_METHOD("_camera_moved"), &ParallaxBackground::_camera_moved);
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ClassDB::bind_method(D_METHOD("set_scroll_offset", "ofs"), &ParallaxBackground::set_scroll_offset);
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ClassDB::bind_method(D_METHOD("get_scroll_offset"), &ParallaxBackground::get_scroll_offset);
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ClassDB::bind_method(D_METHOD("set_scroll_base_offset", "ofs"), &ParallaxBackground::set_scroll_base_offset);
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ClassDB::bind_method(D_METHOD("get_scroll_base_offset"), &ParallaxBackground::get_scroll_base_offset);
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ClassDB::bind_method(D_METHOD("set_scroll_base_scale", "scale"), &ParallaxBackground::set_scroll_base_scale);
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ClassDB::bind_method(D_METHOD("get_scroll_base_scale"), &ParallaxBackground::get_scroll_base_scale);
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ClassDB::bind_method(D_METHOD("set_limit_begin", "ofs"), &ParallaxBackground::set_limit_begin);
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ClassDB::bind_method(D_METHOD("get_limit_begin"), &ParallaxBackground::get_limit_begin);
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ClassDB::bind_method(D_METHOD("set_limit_end", "ofs"), &ParallaxBackground::set_limit_end);
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ClassDB::bind_method(D_METHOD("get_limit_end"), &ParallaxBackground::get_limit_end);
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ClassDB::bind_method(D_METHOD("set_ignore_camera_zoom", "ignore"), &ParallaxBackground::set_ignore_camera_zoom);
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ClassDB::bind_method(D_METHOD("is_ignore_camera_zoom"), &ParallaxBackground::is_ignore_camera_zoom);
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ADD_GROUP("Scroll", "scroll_");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset"), "set_scroll_offset", "get_scroll_offset");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_base_offset"), "set_scroll_base_offset", "get_scroll_base_offset");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_base_scale"), "set_scroll_base_scale", "get_scroll_base_scale");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_limit_begin"), "set_limit_begin", "get_limit_begin");
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ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_limit_end"), "set_limit_end", "get_limit_end");
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ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_ignore_camera_zoom"), "set_ignore_camera_zoom", "is_ignore_camera_zoom");
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}
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ParallaxBackground::ParallaxBackground() {
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base_scale = Vector2(1, 1);
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scale = 1.0;
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set_layer(-1); //behind all by default
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}
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