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godot/scene/2d/collision_shape_2d.cpp

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/*************************************************************************/
/* collision_shape_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2015 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 "collision_shape_2d.h"
#include "collision_object_2d.h"
#include "scene/resources/segment_shape_2d.h"
#include "scene/resources/shape_line_2d.h"
#include "scene/resources/circle_shape_2d.h"
#include "scene/resources/rectangle_shape_2d.h"
#include "scene/resources/capsule_shape_2d.h"
#include "scene/resources/convex_polygon_shape_2d.h"
#include "scene/resources/concave_polygon_shape_2d.h"
void CollisionShape2D::_add_to_collision_object(Object *p_obj) {
if (unparenting)
return;
CollisionObject2D *co = p_obj->cast_to<CollisionObject2D>();
ERR_FAIL_COND(!co);
co->add_shape(shape,get_transform());
if (trigger)
co->set_shape_as_trigger(co->get_shape_count()-1,true);
}
void CollisionShape2D::_shape_changed() {
update();
_update_parent();
}
void CollisionShape2D::_update_parent() {
Node *parent = get_parent();
if (!parent)
return;
CollisionObject2D *co = parent->cast_to<CollisionObject2D>();
if (!co)
return;
co->_update_shapes_from_children();
}
void CollisionShape2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_ENTER_TREE: {
unparenting=false;
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (!is_inside_tree())
break;
_update_parent();
} break;
/*
case NOTIFICATION_TRANSFORM_CHANGED: {
if (!is_inside_scene())
break;
_update_parent();
} break;*/
case NOTIFICATION_DRAW: {
rect=Rect2();
Color draw_col=Color(0,0.6,0.7,0.5);
if (shape->cast_to<LineShape2D>()) {
LineShape2D *l = shape->cast_to<LineShape2D>();
Vector2 point = l->get_d() * l->get_normal();
Vector2 l1[2]={point-l->get_normal().tangent()*100,point+l->get_normal().tangent()*100};
draw_line(l1[0],l1[1],draw_col,3);
Vector2 l2[2]={point,point+l->get_normal()*30};
draw_line(l2[0],l2[1],draw_col,3);
rect.pos=l1[0];
rect.expand_to(l1[1]);
rect.expand_to(l2[0]);
rect.expand_to(l2[1]);
} else if (shape->cast_to<SegmentShape2D>()) {
SegmentShape2D *s = shape->cast_to<SegmentShape2D>();
draw_line(s->get_a(),s->get_b(),draw_col,3);
rect.pos=s->get_a();
rect.expand_to(s->get_b());
} else if (shape->cast_to<RayShape2D>()) {
RayShape2D *s = shape->cast_to<RayShape2D>();
Vector2 tip = Vector2(0,s->get_length());
draw_line(Vector2(),tip,draw_col,3);
Vector<Vector2> pts;
float tsize=4;
pts.push_back(tip+Vector2(0,tsize));
pts.push_back(tip+Vector2(0.707*tsize,0));
pts.push_back(tip+Vector2(-0.707*tsize,0));
Vector<Color> cols;
for(int i=0;i<3;i++)
cols.push_back(draw_col);
draw_primitive(pts,cols,Vector<Vector2>()); //small arrow
rect.pos=Vector2();
rect.expand_to(tip);
rect=rect.grow(0.707*tsize);
} else if (shape->cast_to<CircleShape2D>()) {
CircleShape2D *s = shape->cast_to<CircleShape2D>();
Vector<Vector2> points;
for(int i=0;i<24;i++) {
points.push_back(Vector2(Math::cos(i*Math_PI*2/24.0),Math::sin(i*Math_PI*2/24.0))*s->get_radius());
}
draw_colored_polygon(points,draw_col);
rect.pos=-Point2(s->get_radius(),s->get_radius());
rect.size=Point2(s->get_radius(),s->get_radius())*2.0;
} else if (shape->cast_to<RectangleShape2D>()) {
RectangleShape2D *s = shape->cast_to<RectangleShape2D>();
Vector2 he = s->get_extents();
rect=Rect2(-he,he*2.0);
draw_rect(rect,draw_col);;
} else if (shape->cast_to<CapsuleShape2D>()) {
CapsuleShape2D *s = shape->cast_to<CapsuleShape2D>();
Vector<Vector2> points;
for(int i=0;i<24;i++) {
Vector2 ofs = Vector2(0,(i>6 && i<=18) ? -s->get_height()*0.5 : s->get_height()*0.5);
points.push_back(Vector2(Math::sin(i*Math_PI*2/24.0),Math::cos(i*Math_PI*2/24.0))*s->get_radius() + ofs);
if (i==6 || i==18)
points.push_back(Vector2(Math::sin(i*Math_PI*2/24.0),Math::cos(i*Math_PI*2/24.0))*s->get_radius() - ofs);
}
draw_colored_polygon(points,draw_col);
Vector2 he=Point2(s->get_radius(),s->get_radius()+s->get_height()*0.5);
rect.pos=-he;
rect.size=he*2.0;
} else if (shape->cast_to<ConvexPolygonShape2D>()) {
ConvexPolygonShape2D *s = shape->cast_to<ConvexPolygonShape2D>();
Vector<Vector2> points = s->get_points();
for(int i=0;i<points.size();i++) {
if (i==0)
rect.pos=points[i];
else
rect.expand_to(points[i]);
}
draw_colored_polygon(points,draw_col);
}
rect=rect.grow(3);
} break;
case NOTIFICATION_UNPARENTED: {
unparenting = true;
_update_parent();
} break;
}
}
void CollisionShape2D::set_shape(const Ref<Shape2D>& p_shape) {
if (shape.is_valid())
shape->disconnect("changed",this,"_shape_changed");
shape=p_shape;
update();
_update_parent();
if (shape.is_valid())
shape->connect("changed",this,"_shape_changed");
}
Ref<Shape2D> CollisionShape2D::get_shape() const {
return shape;
}
Rect2 CollisionShape2D::get_item_rect() const {
return rect;
}
void CollisionShape2D::set_trigger(bool p_trigger) {
trigger=p_trigger;
_update_parent();
}
bool CollisionShape2D::is_trigger() const{
return trigger;
}
void CollisionShape2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_shape","shape"),&CollisionShape2D::set_shape);
ObjectTypeDB::bind_method(_MD("get_shape"),&CollisionShape2D::get_shape);
ObjectTypeDB::bind_method(_MD("_shape_changed"),&CollisionShape2D::_shape_changed);
ObjectTypeDB::bind_method(_MD("_add_to_collision_object"),&CollisionShape2D::_add_to_collision_object);
ObjectTypeDB::bind_method(_MD("set_trigger","enable"),&CollisionShape2D::set_trigger);
ObjectTypeDB::bind_method(_MD("is_trigger"),&CollisionShape2D::is_trigger);
ADD_PROPERTYNZ(PropertyInfo(Variant::OBJECT,"shape",PROPERTY_HINT_RESOURCE_TYPE,"Shape2D"),_SCS("set_shape"),_SCS("get_shape"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL,"trigger"),_SCS("set_trigger"),_SCS("is_trigger"));
}
CollisionShape2D::CollisionShape2D() {
rect=Rect2(-Point2(10,10),Point2(20,20));
trigger=false;
unparenting = false;
}
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