/*************************************************************************/ /* parallax_background.cpp */ /*************************************************************************/ /* This file is part of: */ /* GODOT ENGINE */ /* https://godotengine.org */ /*************************************************************************/ /* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */ /* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */ /* */ /* 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 "parallax_background.h" #include "parallax_layer.h" #include "scene/2d/camera_2d.h" #include "scene/2d/node_2d.h" void ParallaxBackground::_notification(int p_what) { switch (p_what) { case NOTIFICATION_ENTER_TREE: { group_name = "__cameras_" + itos(get_viewport().get_id()); add_to_group(group_name); } break; case NOTIFICATION_EXIT_TREE: { remove_from_group(group_name); } break; } } void ParallaxBackground::_camera_moved(const Transform2D &p_transform, const Point2 &p_screen_offset) { screen_offset = p_screen_offset; set_scroll_scale(p_transform.get_scale().dot(Vector2(0.5, 0.5))); set_scroll_offset(p_transform.get_origin()); } void ParallaxBackground::set_scroll_scale(float p_scale) { scale = p_scale; } float ParallaxBackground::get_scroll_scale() const { return scale; } void ParallaxBackground::set_scroll_offset(const Point2 &p_ofs) { offset = p_ofs; _update_scroll(); } void ParallaxBackground::_update_scroll() { if (!is_inside_tree()) { return; } Vector2 ofs = base_offset + offset * base_scale; Size2 vps = get_viewport_size(); ofs = -ofs; if (limit_begin.x < limit_end.x) { if (ofs.x < limit_begin.x) { ofs.x = limit_begin.x; } else if (ofs.x + vps.x > limit_end.x) { ofs.x = limit_end.x - vps.x; } } if (limit_begin.y < limit_end.y) { if (ofs.y < limit_begin.y) { ofs.y = limit_begin.y; } else if (ofs.y + vps.y > limit_end.y) { ofs.y = limit_end.y - vps.y; } } ofs = -ofs; final_offset = ofs; for (int i = 0; i < get_child_count(); i++) { ParallaxLayer *l = Object::cast_to<ParallaxLayer>(get_child(i)); if (!l) { continue; } if (ignore_camera_zoom) { l->set_base_offset_and_scale((ofs + screen_offset * (scale - 1)) / scale, 1.0, screen_offset); } else { l->set_base_offset_and_scale(ofs, scale, screen_offset); } } } Point2 ParallaxBackground::get_scroll_offset() const { return offset; } void ParallaxBackground::set_scroll_base_offset(const Point2 &p_ofs) { base_offset = p_ofs; _update_scroll(); } Point2 ParallaxBackground::get_scroll_base_offset() const { return base_offset; } void ParallaxBackground::set_scroll_base_scale(const Point2 &p_ofs) { base_scale = p_ofs; _update_scroll(); } Point2 ParallaxBackground::get_scroll_base_scale() const { return base_scale; } void ParallaxBackground::set_limit_begin(const Point2 &p_ofs) { limit_begin = p_ofs; _update_scroll(); } Point2 ParallaxBackground::get_limit_begin() const { return limit_begin; } void ParallaxBackground::set_limit_end(const Point2 &p_ofs) { limit_end = p_ofs; _update_scroll(); } Point2 ParallaxBackground::get_limit_end() const { return limit_end; } void ParallaxBackground::set_ignore_camera_zoom(bool ignore) { ignore_camera_zoom = ignore; } bool ParallaxBackground::is_ignore_camera_zoom() { return ignore_camera_zoom; } Vector2 ParallaxBackground::get_final_offset() const { return final_offset; } void ParallaxBackground::_bind_methods() { ClassDB::bind_method(D_METHOD("_camera_moved"), &ParallaxBackground::_camera_moved); ClassDB::bind_method(D_METHOD("set_scroll_offset", "ofs"), &ParallaxBackground::set_scroll_offset); ClassDB::bind_method(D_METHOD("get_scroll_offset"), &ParallaxBackground::get_scroll_offset); ClassDB::bind_method(D_METHOD("set_scroll_base_offset", "ofs"), &ParallaxBackground::set_scroll_base_offset); ClassDB::bind_method(D_METHOD("get_scroll_base_offset"), &ParallaxBackground::get_scroll_base_offset); ClassDB::bind_method(D_METHOD("set_scroll_base_scale", "scale"), &ParallaxBackground::set_scroll_base_scale); ClassDB::bind_method(D_METHOD("get_scroll_base_scale"), &ParallaxBackground::get_scroll_base_scale); ClassDB::bind_method(D_METHOD("set_limit_begin", "ofs"), &ParallaxBackground::set_limit_begin); ClassDB::bind_method(D_METHOD("get_limit_begin"), &ParallaxBackground::get_limit_begin); ClassDB::bind_method(D_METHOD("set_limit_end", "ofs"), &ParallaxBackground::set_limit_end); ClassDB::bind_method(D_METHOD("get_limit_end"), &ParallaxBackground::get_limit_end); ClassDB::bind_method(D_METHOD("set_ignore_camera_zoom", "ignore"), &ParallaxBackground::set_ignore_camera_zoom); ClassDB::bind_method(D_METHOD("is_ignore_camera_zoom"), &ParallaxBackground::is_ignore_camera_zoom); ADD_GROUP("Scroll", "scroll_"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset"), "set_scroll_offset", "get_scroll_offset"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_base_offset"), "set_scroll_base_offset", "get_scroll_base_offset"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_base_scale"), "set_scroll_base_scale", "get_scroll_base_scale"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_limit_begin"), "set_limit_begin", "get_limit_begin"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_limit_end"), "set_limit_end", "get_limit_end"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_ignore_camera_zoom"), "set_ignore_camera_zoom", "is_ignore_camera_zoom"); } ParallaxBackground::ParallaxBackground() { scale = 1.0; set_layer(-100); //behind all by default base_scale = Vector2(1, 1); ignore_camera_zoom = false; }