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virtualx-engine/scene/2d/camera_2d.cpp
Juan Linietsky 0b806ee0fc GODOT IS OPEN SOURCE
2014-02-09 22:10:30 -03:00

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/*************************************************************************/
/* camera_2d.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 "camera_2d.h"
#include "scene/scene_string_names.h"
#include "servers/visual_server.h"
void Camera2D::_update_scroll() {
if (!is_inside_scene())
return;
if (get_scene()->is_editor_hint()) {
update(); //will just be drawn
return;
}
if (current) {
Matrix32 xform = get_camera_transform();
RID vp = viewport->get_viewport();
if (viewport) {
viewport->set_canvas_transform( xform );
}
get_scene()->call_group(SceneMainLoop::GROUP_CALL_REALTIME,group_name,"_camera_moved",xform);
};
}
void Camera2D::set_zoom(const Vector2 &p_zoom) {
zoom = p_zoom;
_update_scroll();
};
Vector2 Camera2D::get_zoom() const {
return zoom;
};
Matrix32 Camera2D::get_camera_transform() {
if (!get_scene())
return Matrix32();
Size2 screen_size = get_viewport_rect().size;
screen_size=get_viewport_rect().size;
Point2 new_camera_pos = get_global_transform().get_origin();
Point2 ret_camera_pos;
if (!first) {
if (centered) {
if (h_drag_enabled) {
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) {
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;
}
}
}
if (smoothing>0.0) {
float c = smoothing*get_fixed_process_delta_time();
smoothed_camera_pos = ((new_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 = (centered ? (screen_size * 0.5 * zoom) : Point2());;
screen_offset+=offset;
Rect2 screen_rect(-screen_offset+ret_camera_pos,screen_size);
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;
Matrix32 xform;
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_SCENE: {
viewport = NULL;
Node *n=this;
while(n){
viewport = n->cast_to<Viewport>();
if (viewport)
break;
n=n->get_parent();
}
canvas = get_canvas();
RID vp = viewport->get_viewport();
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);
_update_scroll();
first=true;
} break;
case NOTIFICATION_EXIT_SCENE: {
if (is_current()) {
if (viewport) {
viewport->set_canvas_transform( Matrix32() );
}
}
remove_from_group(group_name);
remove_from_group(canvas_group_name);
viewport=NULL;
} break;
}
}
void Camera2D::set_offset(const Vector2& p_offset) {
offset=p_offset;
_update_scroll();
}
Vector2 Camera2D::get_offset() const{
return offset;
}
void Camera2D::set_centered(bool p_centered){
centered=p_centered;
_update_scroll();
}
bool Camera2D::is_centered() const {
return centered;
}
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_scene()) {
current=true;
} else {
get_scene()->call_group(SceneMainLoop::GROUP_CALL_REALTIME,group_name,"_make_current",this);
}
}
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_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::set_follow_smoothing(float p_speed) {
smoothing=p_speed;
if (smoothing>0)
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::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_offset","offset"),&Camera2D::set_offset);
ObjectTypeDB::bind_method(_MD("get_offset"),&Camera2D::get_offset);
ObjectTypeDB::bind_method(_MD("set_centered","centered"),&Camera2D::set_centered);
ObjectTypeDB::bind_method(_MD("is_centered"),&Camera2D::is_centered);
ObjectTypeDB::bind_method(_MD("make_current"),&Camera2D::make_current);
ObjectTypeDB::bind_method(_MD("_make_current"),&Camera2D::_make_current);
ObjectTypeDB::bind_method(_MD("_update_scroll"),&Camera2D::_update_scroll);
ObjectTypeDB::bind_method(_MD("_set_current","current"),&Camera2D::_set_current);
ObjectTypeDB::bind_method(_MD("is_current"),&Camera2D::is_current);
ObjectTypeDB::bind_method(_MD("set_limit","margin","limit"),&Camera2D::set_limit);
ObjectTypeDB::bind_method(_MD("get_limit","margin"),&Camera2D::get_limit);
ObjectTypeDB::bind_method(_MD("set_v_drag_enabled","enabled"),&Camera2D::set_v_drag_enabled);
ObjectTypeDB::bind_method(_MD("is_v_drag_enabled"),&Camera2D::is_v_drag_enabled);
ObjectTypeDB::bind_method(_MD("set_h_drag_enabled","enabled"),&Camera2D::set_h_drag_enabled);
ObjectTypeDB::bind_method(_MD("is_h_drag_enabled"),&Camera2D::is_h_drag_enabled);
ObjectTypeDB::bind_method(_MD("set_v_offset","ofs"),&Camera2D::set_v_offset);
ObjectTypeDB::bind_method(_MD("get_v_offset"),&Camera2D::get_v_offset);
ObjectTypeDB::bind_method(_MD("set_h_offset","ofs"),&Camera2D::set_h_offset);
ObjectTypeDB::bind_method(_MD("get_h_offset"),&Camera2D::get_h_offset);
ObjectTypeDB::bind_method(_MD("set_drag_margin","margin","drag_margin"),&Camera2D::set_drag_margin);
ObjectTypeDB::bind_method(_MD("get_drag_margin","margin"),&Camera2D::get_drag_margin);
ObjectTypeDB::bind_method(_MD("get_camera_pos"),&Camera2D::get_camera_pos);
ObjectTypeDB::bind_method(_MD("get_camera_screen_center"),&Camera2D::get_camera_screen_center);
ObjectTypeDB::bind_method(_MD("set_zoom"),&Camera2D::set_zoom);
ObjectTypeDB::bind_method(_MD("get_zoom"),&Camera2D::get_zoom);
ObjectTypeDB::bind_method(_MD("set_follow_smoothing","follow_smoothing"),&Camera2D::set_follow_smoothing);
ObjectTypeDB::bind_method(_MD("get_follow_smoothing"),&Camera2D::get_follow_smoothing);
ObjectTypeDB::bind_method(_MD("force_update_scroll"),&Camera2D::force_update_scroll);
ADD_PROPERTYNZ( PropertyInfo(Variant::VECTOR2,"offset"),_SCS("set_offset"),_SCS("get_offset"));
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"centered"),_SCS("set_centered"),_SCS("is_centered"));
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"current"),_SCS("_set_current"),_SCS("is_current"));
ADD_PROPERTY( PropertyInfo(Variant::REAL,"smoothing"),_SCS("set_follow_smoothing"),_SCS("get_follow_smoothing") );
ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"zoom"),_SCS("set_zoom"),_SCS("get_zoom") );
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/left"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_LEFT);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/top"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_TOP);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/right"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_RIGHT);
ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/bottom"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_BOTTOM);
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin/h_enabled"),_SCS("set_h_drag_enabled"),_SCS("is_h_drag_enabled") );
ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin/v_enabled"),_SCS("set_v_drag_enabled"),_SCS("is_v_drag_enabled") );
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/left",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_LEFT);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/top",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_TOP);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/right",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_RIGHT);
ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/bottom",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_BOTTOM);
}
Camera2D::Camera2D() {
centered=true;
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();
smoothing=0.0;
zoom = Vector2(1, 1);
h_drag_enabled=true;
v_drag_enabled=true;
h_ofs=0;
v_ofs=0;
}
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