godot/scene/2d/parallax_2d.cpp
2024-09-23 20:36:38 +08:00

309 lines
11 KiB
C++

/**************************************************************************/
/* parallax_2d.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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_2d.h"
#include "core/config/project_settings.h"
#include "scene/main/viewport.h"
void Parallax2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
group_name = "__cameras_" + itos(get_viewport_rid().get_id());
add_to_group(group_name);
_update_repeat();
_update_scroll();
} break;
case NOTIFICATION_READY: {
_update_process();
} break;
case NOTIFICATION_INTERNAL_PROCESS: {
Point2 offset = scroll_offset;
offset += autoscroll * get_process_delta_time();
if (repeat_size.x) {
offset.x = Math::fposmod(offset.x, repeat_size.x);
}
if (repeat_size.y) {
offset.y = Math::fposmod(offset.y, repeat_size.y);
}
scroll_offset = offset;
_update_scroll();
} break;
case NOTIFICATION_EXIT_TREE: {
remove_from_group(group_name);
} break;
}
}
#ifdef TOOLS_ENABLED
void Parallax2D::_edit_set_position(const Point2 &p_position) {
set_scroll_offset(p_position);
}
#endif // TOOLS_ENABLED
void Parallax2D::_validate_property(PropertyInfo &p_property) const {
if (p_property.name == "position") {
p_property.usage = PROPERTY_USAGE_NONE;
}
}
void Parallax2D::_camera_moved(const Transform2D &p_transform, const Point2 &p_screen_offset, const Point2 &p_adj_screen_pos) {
if (!ignore_camera_scroll) {
if (get_viewport() && get_viewport()->is_snap_2d_transforms_to_pixel_enabled()) {
Size2 vps = get_viewport_rect().size;
Vector2 offset;
offset.x = ((int)vps.width % 2) ? 0.0 : 0.5;
offset.y = ((int)vps.height % 2) ? 0.0 : 0.5;
set_screen_offset((p_adj_screen_pos + offset).floor());
} else {
set_screen_offset(p_adj_screen_pos);
}
}
}
void Parallax2D::_update_process() {
set_process_internal(!Engine::get_singleton()->is_editor_hint() && (repeat_size.x || repeat_size.y) && (autoscroll.x || autoscroll.y));
}
void Parallax2D::_update_scroll() {
if (!is_inside_tree()) {
return;
}
Point2 scroll_ofs = screen_offset;
if (!Engine::get_singleton()->is_editor_hint()) {
Size2 vps = get_viewport_rect().size;
if (limit_begin.x <= limit_end.x - vps.x) {
scroll_ofs.x = CLAMP(scroll_ofs.x, limit_begin.x, limit_end.x - vps.x);
}
if (limit_begin.y <= limit_end.y - vps.y) {
scroll_ofs.y = CLAMP(scroll_ofs.y, limit_begin.y, limit_end.y - vps.y);
}
}
scroll_ofs *= scroll_scale;
if (repeat_size.x) {
real_t mod = Math::fposmod(scroll_ofs.x - scroll_offset.x, repeat_size.x * get_scale().x);
scroll_ofs.x = screen_offset.x - mod;
} else {
scroll_ofs.x = screen_offset.x + scroll_offset.x - scroll_ofs.x;
}
if (repeat_size.y) {
real_t mod = Math::fposmod(scroll_ofs.y - scroll_offset.y, repeat_size.y * get_scale().y);
scroll_ofs.y = screen_offset.y - mod;
} else {
scroll_ofs.y = screen_offset.y + scroll_offset.y - scroll_ofs.y;
}
if (!follow_viewport) {
scroll_ofs -= screen_offset;
}
set_position(scroll_ofs);
}
void Parallax2D::_update_repeat() {
if (!is_inside_tree()) {
return;
}
RenderingServer::get_singleton()->canvas_set_item_repeat(get_canvas_item(), repeat_size, repeat_times);
RenderingServer::get_singleton()->canvas_item_set_interpolated(get_canvas_item(), false);
}
void Parallax2D::set_scroll_scale(const Size2 &p_scale) {
scroll_scale = p_scale;
}
Size2 Parallax2D::get_scroll_scale() const {
return scroll_scale;
}
void Parallax2D::set_repeat_size(const Size2 &p_repeat_size) {
if (p_repeat_size == repeat_size) {
return;
}
repeat_size = p_repeat_size.maxf(0);
_update_process();
_update_repeat();
_update_scroll();
}
Size2 Parallax2D::get_repeat_size() const {
return repeat_size;
}
void Parallax2D::set_repeat_times(int p_repeat_times) {
if (p_repeat_times == repeat_times) {
return;
}
repeat_times = MAX(p_repeat_times, 1);
_update_repeat();
}
int Parallax2D::get_repeat_times() const {
return repeat_times;
}
void Parallax2D::set_scroll_offset(const Point2 &p_offset) {
if (p_offset == scroll_offset) {
return;
}
scroll_offset = p_offset;
_update_scroll();
}
Point2 Parallax2D::get_scroll_offset() const {
return scroll_offset;
}
void Parallax2D::set_autoscroll(const Point2 &p_autoscroll) {
if (p_autoscroll == autoscroll) {
return;
}
autoscroll = p_autoscroll;
_update_process();
_update_scroll();
}
Point2 Parallax2D::get_autoscroll() const {
return autoscroll;
}
void Parallax2D::set_screen_offset(const Point2 &p_offset) {
if (p_offset == screen_offset) {
return;
}
screen_offset = p_offset;
_update_scroll();
}
Point2 Parallax2D::get_screen_offset() const {
return screen_offset;
}
void Parallax2D::set_limit_begin(const Point2 &p_offset) {
limit_begin = p_offset;
}
Point2 Parallax2D::get_limit_begin() const {
return limit_begin;
}
void Parallax2D::set_limit_end(const Point2 &p_offset) {
limit_end = p_offset;
}
Point2 Parallax2D::get_limit_end() const {
return limit_end;
}
void Parallax2D::set_follow_viewport(bool p_follow) {
follow_viewport = p_follow;
}
bool Parallax2D::get_follow_viewport() {
return follow_viewport;
}
void Parallax2D::set_ignore_camera_scroll(bool p_ignore) {
ignore_camera_scroll = p_ignore;
}
bool Parallax2D::is_ignore_camera_scroll() {
return ignore_camera_scroll;
}
void Parallax2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("_camera_moved", "transform", "screen_offset", "adj_screen_offset"), &Parallax2D::_camera_moved);
ClassDB::bind_method(D_METHOD("set_scroll_scale", "scale"), &Parallax2D::set_scroll_scale);
ClassDB::bind_method(D_METHOD("get_scroll_scale"), &Parallax2D::get_scroll_scale);
ClassDB::bind_method(D_METHOD("set_repeat_size", "repeat_size"), &Parallax2D::set_repeat_size);
ClassDB::bind_method(D_METHOD("get_repeat_size"), &Parallax2D::get_repeat_size);
ClassDB::bind_method(D_METHOD("set_repeat_times", "repeat_times"), &Parallax2D::set_repeat_times);
ClassDB::bind_method(D_METHOD("get_repeat_times"), &Parallax2D::get_repeat_times);
ClassDB::bind_method(D_METHOD("set_autoscroll", "autoscroll"), &Parallax2D::set_autoscroll);
ClassDB::bind_method(D_METHOD("get_autoscroll"), &Parallax2D::get_autoscroll);
ClassDB::bind_method(D_METHOD("set_scroll_offset", "offset"), &Parallax2D::set_scroll_offset);
ClassDB::bind_method(D_METHOD("get_scroll_offset"), &Parallax2D::get_scroll_offset);
ClassDB::bind_method(D_METHOD("set_screen_offset", "offset"), &Parallax2D::set_screen_offset);
ClassDB::bind_method(D_METHOD("get_screen_offset"), &Parallax2D::get_screen_offset);
ClassDB::bind_method(D_METHOD("set_limit_begin", "offset"), &Parallax2D::set_limit_begin);
ClassDB::bind_method(D_METHOD("get_limit_begin"), &Parallax2D::get_limit_begin);
ClassDB::bind_method(D_METHOD("set_limit_end", "offset"), &Parallax2D::set_limit_end);
ClassDB::bind_method(D_METHOD("get_limit_end"), &Parallax2D::get_limit_end);
ClassDB::bind_method(D_METHOD("set_follow_viewport", "follow"), &Parallax2D::set_follow_viewport);
ClassDB::bind_method(D_METHOD("get_follow_viewport"), &Parallax2D::get_follow_viewport);
ClassDB::bind_method(D_METHOD("set_ignore_camera_scroll", "ignore"), &Parallax2D::set_ignore_camera_scroll);
ClassDB::bind_method(D_METHOD("is_ignore_camera_scroll"), &Parallax2D::is_ignore_camera_scroll);
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_scale", PROPERTY_HINT_LINK), "set_scroll_scale", "get_scroll_scale");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "scroll_offset", PROPERTY_HINT_NONE, "suffix:px"), "set_scroll_offset", "get_scroll_offset");
ADD_GROUP("Repeat", "");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "repeat_size"), "set_repeat_size", "get_repeat_size");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "autoscroll", PROPERTY_HINT_NONE, "suffix:px/s"), "set_autoscroll", "get_autoscroll");
ADD_PROPERTY(PropertyInfo(Variant::INT, "repeat_times"), "set_repeat_times", "get_repeat_times");
ADD_GROUP("Limit", "limit_");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "limit_begin", PROPERTY_HINT_NONE, "suffix:px"), "set_limit_begin", "get_limit_begin");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "limit_end", PROPERTY_HINT_NONE, "suffix:px"), "set_limit_end", "get_limit_end");
ADD_GROUP("Override", "");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "follow_viewport"), "set_follow_viewport", "get_follow_viewport");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "ignore_camera_scroll"), "set_ignore_camera_scroll", "is_ignore_camera_scroll");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "screen_offset", PROPERTY_HINT_NONE, "suffix:px"), "set_screen_offset", "get_screen_offset");
}
Parallax2D::Parallax2D() {
// Parallax2D is always updated every frame so there is no need to interpolate.
set_physics_interpolation_mode(Node::PHYSICS_INTERPOLATION_MODE_OFF);
}