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godot/scene/2d/camera_2d.cpp

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/*************************************************************************/
/* camera_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 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 "camera_2d.h"
#include "scene/scene_string_names.h"
#include "servers/visual_server.h"
#include "core/math/math_funcs.h"
#include <editor/editor_node.h>
void Camera2D::_update_scroll() {
if (!is_inside_tree())
return;
if (get_tree()->is_editor_hint()) {
update(); //will just be drawn
return;
}
if (current) {
ERR_FAIL_COND( custom_viewport && !ObjectDB::get_instance(custom_viewport_id) );
Transform2D xform = get_camera_transform();
if (viewport) {
viewport->set_canvas_transform( xform );
}
get_tree()->call_group_flags(SceneTree::GROUP_CALL_REALTIME,group_name,"_camera_moved",xform);
};
}
void Camera2D::set_zoom(const Vector2 &p_zoom) {
zoom = p_zoom;
Point2 old_smoothed_camera_pos = smoothed_camera_pos;
_update_scroll();
smoothed_camera_pos = old_smoothed_camera_pos;
};
Vector2 Camera2D::get_zoom() const {
return zoom;
};
Transform2D Camera2D::get_camera_transform() {
if (!get_tree())
return Transform2D();
ERR_FAIL_COND_V( custom_viewport && !ObjectDB::get_instance(custom_viewport_id), Transform2D() );
Size2 screen_size = viewport->get_visible_rect().size;
Point2 new_camera_pos = get_global_transform().get_origin();
Point2 ret_camera_pos;
if (!first) {
if (anchor_mode==ANCHOR_MODE_DRAG_CENTER) {
if (h_drag_enabled && !get_tree()->is_editor_hint()) {
camera_pos.x = MIN( camera_pos.x, (new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT]));
camera_pos.x = MAX( camera_pos.x, (new_camera_pos.x - screen_size.x * 0.5 * drag_margin[MARGIN_LEFT]));
} else {
if (h_ofs<0) {
camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
} else {
camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
}
}
if (v_drag_enabled && !get_tree()->is_editor_hint()) {
camera_pos.y = MIN( camera_pos.y, (new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM]));
camera_pos.y = MAX( camera_pos.y, (new_camera_pos.y - screen_size.y * 0.5 * drag_margin[MARGIN_TOP]));
} else {
if (v_ofs<0) {
camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
} else {
camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
}
}
} else if (anchor_mode==ANCHOR_MODE_FIXED_TOP_LEFT){
camera_pos=new_camera_pos;
}
Point2 screen_offset = (anchor_mode==ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());
Rect2 screen_rect(-screen_offset+camera_pos,screen_size*zoom);
if (offset!=Vector2())
screen_rect.pos+=offset;
if (limit_smoothing_enabled) {
if (screen_rect.pos.x < limit[MARGIN_LEFT])
camera_pos.x -= screen_rect.pos.x - limit[MARGIN_LEFT];
if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
camera_pos.x -= screen_rect.pos.x + screen_rect.size.x - limit[MARGIN_RIGHT];
if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
camera_pos.y -= screen_rect.pos.y + screen_rect.size.y - limit[MARGIN_BOTTOM];
if (screen_rect.pos.y < limit[MARGIN_TOP])
camera_pos.y -= screen_rect.pos.y - limit[MARGIN_TOP];
}
if (smoothing_enabled && !get_tree()->is_editor_hint()) {
float c = smoothing*get_fixed_process_delta_time();
smoothed_camera_pos = ((camera_pos-smoothed_camera_pos)*c)+smoothed_camera_pos;
ret_camera_pos=smoothed_camera_pos;
//camera_pos=camera_pos*(1.0-smoothing)+new_camera_pos*smoothing;
} else {
ret_camera_pos=smoothed_camera_pos=camera_pos;
}
} else {
ret_camera_pos=smoothed_camera_pos=camera_pos=new_camera_pos;
first=false;
}
Point2 screen_offset = (anchor_mode==ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());
float angle = get_global_transform().get_rotation();
if(rotating){
screen_offset = screen_offset.rotated(angle);
}
Rect2 screen_rect(-screen_offset+ret_camera_pos,screen_size*zoom);
if (screen_rect.pos.x < limit[MARGIN_LEFT])
screen_rect.pos.x = limit[MARGIN_LEFT];
if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
if (screen_rect.pos.y < limit[MARGIN_TOP])
screen_rect.pos.y =limit[MARGIN_TOP];
if (offset!=Vector2()) {
screen_rect.pos+=offset;
if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
if (screen_rect.pos.x < limit[MARGIN_LEFT])
screen_rect.pos.x=limit[MARGIN_LEFT];
if (screen_rect.pos.y < limit[MARGIN_TOP])
screen_rect.pos.y =limit[MARGIN_TOP];
}
camera_screen_center=screen_rect.pos+screen_rect.size*0.5;
Transform2D xform;
if(rotating){
xform.set_rotation(angle);
}
xform.scale_basis(zoom);
xform.set_origin(screen_rect.pos/*.floor()*/);
/*
if (0) {
xform = get_global_transform() * xform;
} else {
xform.elements[2]+=get_global_transform().get_origin();
}
*/
return (xform).affine_inverse();
}
void Camera2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_FIXED_PROCESS: {
_update_scroll();
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
if (!is_fixed_processing())
_update_scroll();
} break;
case NOTIFICATION_ENTER_TREE: {
if (custom_viewport && ObjectDB::get_instance(custom_viewport_id)) {
viewport=custom_viewport;
} else {
viewport=get_viewport();
}
canvas = get_canvas();
RID vp = viewport->get_viewport_rid();
group_name = "__cameras_"+itos(vp.get_id());
canvas_group_name ="__cameras_c"+itos(canvas.get_id());
add_to_group(group_name);
add_to_group(canvas_group_name);
if(get_tree()->is_editor_hint()) {
set_fixed_process(false);
}
_update_scroll();
first=true;
} break;
case NOTIFICATION_EXIT_TREE: {
if (is_current()) {
if (viewport && !(custom_viewport && !ObjectDB::get_instance(custom_viewport_id))) {
viewport->set_canvas_transform( Transform2D() );
}
}
remove_from_group(group_name);
remove_from_group(canvas_group_name);
viewport=NULL;
} break;
case NOTIFICATION_DRAW: {
if (!is_inside_tree() || !get_tree()->is_editor_hint())
break;
Color area_axis_color(0.5, 0.42, 0.87, 0.63);
float area_axis_width = 1;
if(current)
area_axis_width = 3;
Transform2D inv_camera_transform = get_camera_transform().affine_inverse();
Size2 screen_size = get_viewport_rect().size;
Vector2 screen_endpoints[4]= {
inv_camera_transform.xform(Vector2(0, 0)),
inv_camera_transform.xform(Vector2(screen_size.width,0)),
inv_camera_transform.xform(Vector2(screen_size.width, screen_size.height)),
inv_camera_transform.xform(Vector2(0, screen_size.height))
};
Transform2D inv_transform = get_global_transform().affine_inverse(); // undo global space
for(int i=0;i<4;i++) {
draw_line(inv_transform.xform(screen_endpoints[i]), inv_transform.xform(screen_endpoints[(i+1)%4]), area_axis_color, area_axis_width);
}
} break;
}
}
void Camera2D::set_offset(const Vector2& p_offset) {
offset=p_offset;
_update_scroll();
}
Vector2 Camera2D::get_offset() const{
return offset;
}
void Camera2D::set_anchor_mode(AnchorMode p_anchor_mode){
anchor_mode=p_anchor_mode;
_update_scroll();
}
Camera2D::AnchorMode Camera2D::get_anchor_mode() const {
return anchor_mode;
}
void Camera2D::set_rotating(bool p_rotating){
rotating=p_rotating;
_update_scroll();
}
bool Camera2D::is_rotating() const {
return rotating;
}
void Camera2D::_make_current(Object *p_which) {
if (p_which==this) {
current=true;
_update_scroll();
} else {
current=false;
}
}
void Camera2D::_set_current(bool p_current) {
if (p_current)
make_current();
current=p_current;
}
bool Camera2D::is_current() const {
return current;
}
void Camera2D::make_current() {
if (!is_inside_tree()) {
current=true;
} else {
get_tree()->call_group_flags(SceneTree::GROUP_CALL_REALTIME,group_name,"_make_current",this);
}
}
void Camera2D::clear_current() {
current=false;
if (is_inside_tree()) {
get_tree()->call_group_flags(SceneTree::GROUP_CALL_REALTIME,group_name,"_make_current",(Object*)(NULL));
}
}
void Camera2D::set_limit(Margin p_margin,int p_limit) {
ERR_FAIL_INDEX(p_margin,4);
limit[p_margin]=p_limit;
}
int Camera2D::get_limit(Margin p_margin) const{
ERR_FAIL_INDEX_V(p_margin,4,0);
return limit[p_margin];
}
void Camera2D::set_limit_smoothing_enabled(bool enable) {
limit_smoothing_enabled = enable;
_update_scroll();
}
bool Camera2D::is_limit_smoothing_enabled() const{
return limit_smoothing_enabled;
}
void Camera2D::set_drag_margin(Margin p_margin,float p_drag_margin) {
ERR_FAIL_INDEX(p_margin,4);
drag_margin[p_margin]=p_drag_margin;
}
float Camera2D::get_drag_margin(Margin p_margin) const{
ERR_FAIL_INDEX_V(p_margin,4,0);
return drag_margin[p_margin];
}
Vector2 Camera2D::get_camera_pos() const {
return camera_pos;
}
void Camera2D::force_update_scroll() {
_update_scroll();
}
void Camera2D::reset_smoothing() {
smoothed_camera_pos = camera_pos;
_update_scroll();
}
void Camera2D::align() {
ERR_FAIL_COND( custom_viewport && !ObjectDB::get_instance(custom_viewport_id) );
Size2 screen_size = viewport->get_visible_rect().size;
Point2 current_camera_pos = get_global_transform().get_origin();
if (anchor_mode==ANCHOR_MODE_DRAG_CENTER) {
if (h_ofs<0) {
camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
} else {
camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
}
if (v_ofs<0) {
camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
} else {
camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
}
} else if (anchor_mode==ANCHOR_MODE_FIXED_TOP_LEFT){
camera_pos=current_camera_pos;
}
_update_scroll();
}
void Camera2D::set_follow_smoothing(float p_speed) {
smoothing=p_speed;
if (smoothing>0 && !(is_inside_tree() && get_tree()->is_editor_hint()))
set_fixed_process(true);
else
set_fixed_process(false);
}
float Camera2D::get_follow_smoothing() const{
return smoothing;
}
Point2 Camera2D::get_camera_screen_center() const {
return camera_screen_center;
}
void Camera2D::set_h_drag_enabled(bool p_enabled) {
h_drag_enabled=p_enabled;
}
bool Camera2D::is_h_drag_enabled() const{
return h_drag_enabled;
}
void Camera2D::set_v_drag_enabled(bool p_enabled){
v_drag_enabled=p_enabled;
}
bool Camera2D::is_v_drag_enabled() const{
return v_drag_enabled;
}
void Camera2D::set_v_offset(float p_offset) {
v_ofs=p_offset;
}
float Camera2D::get_v_offset() const{
return v_ofs;
}
void Camera2D::set_h_offset(float p_offset){
h_ofs=p_offset;
}
float Camera2D::get_h_offset() const{
return h_ofs;
}
void Camera2D::_set_old_smoothing(float p_val) {
//compatibility
if (p_val>0) {
smoothing_enabled=true;
set_follow_smoothing(p_val);
}
}
void Camera2D::set_enable_follow_smoothing(bool p_enabled) {
smoothing_enabled=p_enabled;
}
bool Camera2D::is_follow_smoothing_enabled() const {
return smoothing_enabled;
}
void Camera2D::set_custom_viewport(Node *p_viewport) {
ERR_FAIL_NULL(p_viewport);
if (is_inside_tree()) {
remove_from_group(group_name);
remove_from_group(canvas_group_name);
}
custom_viewport=p_viewport->cast_to<Viewport>();
if (custom_viewport) {
custom_viewport_id=custom_viewport->get_instance_ID();
} else {
custom_viewport_id=0;
}
if (is_inside_tree()) {
if (custom_viewport)
viewport=custom_viewport;
else
viewport=get_viewport();
RID vp = viewport->get_viewport_rid();
group_name = "__cameras_"+itos(vp.get_id());
canvas_group_name ="__cameras_c"+itos(canvas.get_id());
add_to_group(group_name);
add_to_group(canvas_group_name);
}
}
Node* Camera2D::get_custom_viewport() const {
return custom_viewport;
}
void Camera2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_offset","offset"),&Camera2D::set_offset);
ClassDB::bind_method(D_METHOD("get_offset"),&Camera2D::get_offset);
ClassDB::bind_method(D_METHOD("set_anchor_mode","anchor_mode"),&Camera2D::set_anchor_mode);
ClassDB::bind_method(D_METHOD("get_anchor_mode"),&Camera2D::get_anchor_mode);
ClassDB::bind_method(D_METHOD("set_rotating","rotating"),&Camera2D::set_rotating);
ClassDB::bind_method(D_METHOD("is_rotating"),&Camera2D::is_rotating);
ClassDB::bind_method(D_METHOD("make_current"),&Camera2D::make_current);
ClassDB::bind_method(D_METHOD("clear_current"),&Camera2D::clear_current);
ClassDB::bind_method(D_METHOD("_make_current"),&Camera2D::_make_current);
ClassDB::bind_method(D_METHOD("_update_scroll"),&Camera2D::_update_scroll);
ClassDB::bind_method(D_METHOD("_set_current","current"),&Camera2D::_set_current);
ClassDB::bind_method(D_METHOD("is_current"),&Camera2D::is_current);
ClassDB::bind_method(D_METHOD("set_limit","margin","limit"),&Camera2D::set_limit);
ClassDB::bind_method(D_METHOD("get_limit","margin"),&Camera2D::get_limit);
ClassDB::bind_method(D_METHOD("set_limit_smoothing_enabled","limit_smoothing_enabled"),&Camera2D::set_limit_smoothing_enabled);
ClassDB::bind_method(D_METHOD("is_limit_smoothing_enabled"),&Camera2D::is_limit_smoothing_enabled);
ClassDB::bind_method(D_METHOD("set_v_drag_enabled","enabled"),&Camera2D::set_v_drag_enabled);
ClassDB::bind_method(D_METHOD("is_v_drag_enabled"),&Camera2D::is_v_drag_enabled);
ClassDB::bind_method(D_METHOD("set_h_drag_enabled","enabled"),&Camera2D::set_h_drag_enabled);
ClassDB::bind_method(D_METHOD("is_h_drag_enabled"),&Camera2D::is_h_drag_enabled);
ClassDB::bind_method(D_METHOD("set_v_offset","ofs"),&Camera2D::set_v_offset);
ClassDB::bind_method(D_METHOD("get_v_offset"),&Camera2D::get_v_offset);
ClassDB::bind_method(D_METHOD("set_h_offset","ofs"),&Camera2D::set_h_offset);
ClassDB::bind_method(D_METHOD("get_h_offset"),&Camera2D::get_h_offset);
ClassDB::bind_method(D_METHOD("set_drag_margin","margin","drag_margin"),&Camera2D::set_drag_margin);
ClassDB::bind_method(D_METHOD("get_drag_margin","margin"),&Camera2D::get_drag_margin);
ClassDB::bind_method(D_METHOD("get_camera_pos"),&Camera2D::get_camera_pos);
ClassDB::bind_method(D_METHOD("get_camera_screen_center"),&Camera2D::get_camera_screen_center);
ClassDB::bind_method(D_METHOD("set_zoom","zoom"),&Camera2D::set_zoom);
ClassDB::bind_method(D_METHOD("get_zoom"),&Camera2D::get_zoom);
ClassDB::bind_method(D_METHOD("set_custom_viewport","viewport:Viewport"),&Camera2D::set_custom_viewport);
ClassDB::bind_method(D_METHOD("get_custom_viewport:Viewport"),&Camera2D::get_custom_viewport);
ClassDB::bind_method(D_METHOD("set_follow_smoothing","follow_smoothing"),&Camera2D::set_follow_smoothing);
ClassDB::bind_method(D_METHOD("get_follow_smoothing"),&Camera2D::get_follow_smoothing);
ClassDB::bind_method(D_METHOD("set_enable_follow_smoothing","follow_smoothing"),&Camera2D::set_enable_follow_smoothing);
ClassDB::bind_method(D_METHOD("is_follow_smoothing_enabled"),&Camera2D::is_follow_smoothing_enabled);
ClassDB::bind_method(D_METHOD("force_update_scroll"),&Camera2D::force_update_scroll);
ClassDB::bind_method(D_METHOD("reset_smoothing"),&Camera2D::reset_smoothing);
ClassDB::bind_method(D_METHOD("align"),&Camera2D::align);
ClassDB::bind_method(D_METHOD("_set_old_smoothing","follow_smoothing"),&Camera2D::_set_old_smoothing);
ADD_PROPERTYNZ( PropertyInfo(Variant::VECTOR2,"offset"),"set_offset","get_offset");
ADD_PROPERTY( PropertyInfo(Variant::INT,"anchor_mode",PROPERTY_HINT_ENUM,"Fixed TopLeft,Drag Center"),"set_anchor_mode","get_anchor_mode");
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"rotating"),"set_rotating","is_rotating");
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"current"),"_set_current","is_current");
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"zoom"),"set_zoom","get_zoom") ;
ADD_GROUP("Limit","limit_");
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit_left"),"set_limit","get_limit",MARGIN_LEFT);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit_top"),"set_limit","get_limit",MARGIN_TOP);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit_right"),"set_limit","get_limit",MARGIN_RIGHT);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit_bottom"),"set_limit","get_limit",MARGIN_BOTTOM);
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"limit_smoothed"),"set_limit_smoothing_enabled","is_limit_smoothing_enabled") ;
ADD_GROUP("Draw Margin","draw_margin_");
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin_h_enabled"),"set_h_drag_enabled","is_h_drag_enabled") ;
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin_v_enabled"),"set_v_drag_enabled","is_v_drag_enabled") ;
ADD_GROUP("Smoothing","smoothing_");
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"smoothing_enabled"),"set_enable_follow_smoothing","is_follow_smoothing_enabled") ;
ADD_PROPERTY( PropertyInfo(Variant::REAL,"smoothing_speed"),"set_follow_smoothing","get_follow_smoothing") ;
ADD_GROUP("Drag Margin","drag_margin_");
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin_left",PROPERTY_HINT_RANGE,"0,1,0.01"),"set_drag_margin","get_drag_margin",MARGIN_LEFT);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin_top",PROPERTY_HINT_RANGE,"0,1,0.01"),"set_drag_margin","get_drag_margin",MARGIN_TOP);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin_right",PROPERTY_HINT_RANGE,"0,1,0.01"),"set_drag_margin","get_drag_margin",MARGIN_RIGHT);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin_bottom",PROPERTY_HINT_RANGE,"0,1,0.01"),"set_drag_margin","get_drag_margin",MARGIN_BOTTOM);
BIND_CONSTANT( ANCHOR_MODE_DRAG_CENTER );
BIND_CONSTANT( ANCHOR_MODE_FIXED_TOP_LEFT );
}
Camera2D::Camera2D() {
anchor_mode=ANCHOR_MODE_DRAG_CENTER;
rotating=false;
current=false;
limit[MARGIN_LEFT]=-10000000;
limit[MARGIN_TOP]=-10000000;
limit[MARGIN_RIGHT]=10000000;
limit[MARGIN_BOTTOM]=10000000;
drag_margin[MARGIN_LEFT]=0.2;
drag_margin[MARGIN_TOP]=0.2;
drag_margin[MARGIN_RIGHT]=0.2;
drag_margin[MARGIN_BOTTOM]=0.2;
camera_pos=Vector2();
first=true;
smoothing_enabled=false;
limit_smoothing_enabled=false;
custom_viewport=NULL;
custom_viewport_id=0;
smoothing=5.0;
zoom = Vector2(1, 1);
h_drag_enabled=true;
v_drag_enabled=true;
h_ofs=0;
v_ofs=0;
set_notify_transform(true);
}
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