godot/scene/2d/parallax_background.cpp

201 lines
6.1 KiB
C++

/*************************************************************************/
/* parallax_background.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* 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_background.h"
#include "parallax_layer.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 Matrix32& p_transform) {
set_scroll_offset(p_transform.get_origin());
set_scroll_scale(p_transform.get_scale().dot(Vector2(0.5,0.5)));
}
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;
for(int i=0;i<get_child_count();i++) {
ParallaxLayer *l=get_child(i)->cast_to<ParallaxLayer>();
if (!l)
continue;
l->set_base_offset_and_scale(ofs,scale);
}
}
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::_bind_methods() {
ObjectTypeDB::bind_method(_MD("_camera_moved"),&ParallaxBackground::_camera_moved);
ObjectTypeDB::bind_method(_MD("set_scroll_offset","ofs"),&ParallaxBackground::set_scroll_offset);
ObjectTypeDB::bind_method(_MD("get_scroll_offset"),&ParallaxBackground::get_scroll_offset);
ObjectTypeDB::bind_method(_MD("set_scroll_base_offset","ofs"),&ParallaxBackground::set_scroll_base_offset);
ObjectTypeDB::bind_method(_MD("get_scroll_base_offset"),&ParallaxBackground::get_scroll_base_offset);
ObjectTypeDB::bind_method(_MD("set_scroll_base_scale","scale"),&ParallaxBackground::set_scroll_base_scale);
ObjectTypeDB::bind_method(_MD("get_scroll_base_scale"),&ParallaxBackground::get_scroll_base_scale);
ObjectTypeDB::bind_method(_MD("set_limit_begin","ofs"),&ParallaxBackground::set_limit_begin);
ObjectTypeDB::bind_method(_MD("get_limit_begin"),&ParallaxBackground::get_limit_begin);
ObjectTypeDB::bind_method(_MD("set_limit_end","ofs"),&ParallaxBackground::set_limit_end);
ObjectTypeDB::bind_method(_MD("get_limit_end"),&ParallaxBackground::get_limit_end);
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"scroll/offset"),_SCS("set_scroll_offset"),_SCS("get_scroll_offset"));
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"scroll/base_offset"),_SCS("set_scroll_base_offset"),_SCS("get_scroll_base_offset"));
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"scroll/base_scale"),_SCS("set_scroll_base_scale"),_SCS("get_scroll_base_scale"));
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"scroll/limit_begin"),_SCS("set_limit_begin"),_SCS("get_limit_begin"));
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"scroll/limit_end"),_SCS("set_limit_end"),_SCS("get_limit_end"));
}
ParallaxBackground::ParallaxBackground() {
base_scale=Vector2(1,1);
scale=1.0;
set_layer(-1); //behind all by default
}