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godot/scene/2d/joints_2d.cpp

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GODOT IS OPEN SOURCE
2014-02-10 01:10:30 +00:00
/*************************************************************************/
/* joints_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 "joints_2d.h"
#include "servers/physics_2d_server.h"
#include "physics_body_2d.h"
void Joint2D::_update_joint() {
if (!is_inside_scene())
return;
if (joint.is_valid()) {
Physics2DServer::get_singleton()->free(joint);
}
joint=RID();
joint = _configure_joint();
Physics2DServer::get_singleton()->get_singleton()->joint_set_param(joint,Physics2DServer::JOINT_PARAM_BIAS,bias);
}
void Joint2D::set_node_a(const NodePath& p_node_a) {
if (a==p_node_a)
return;
a=p_node_a;
_update_joint();
}
NodePath Joint2D::get_node_a() const{
return a;
}
void Joint2D::set_node_b(const NodePath& p_node_b){
if (b==p_node_b)
return;
b=p_node_b;
_update_joint();
}
NodePath Joint2D::get_node_b() const{
return b;
}
void Joint2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_READY: {
_update_joint();
} break;
case NOTIFICATION_EXIT_SCENE: {
if (joint.is_valid()) {
Physics2DServer::get_singleton()->free(joint);
joint=RID();
}
} break;
}
}
void Joint2D::set_bias(real_t p_bias) {
bias=p_bias;
if (joint.is_valid())
Physics2DServer::get_singleton()->get_singleton()->joint_set_param(joint,Physics2DServer::JOINT_PARAM_BIAS,bias);
}
real_t Joint2D::get_bias() const{
return bias;
}
void Joint2D::_bind_methods() {
ObjectTypeDB::bind_method( _MD("set_node_a","node"), &Joint2D::set_node_a );
ObjectTypeDB::bind_method( _MD("get_node_a"), &Joint2D::get_node_a );
ObjectTypeDB::bind_method( _MD("set_node_b","node"), &Joint2D::set_node_b );
ObjectTypeDB::bind_method( _MD("get_node_b"), &Joint2D::get_node_b );
ObjectTypeDB::bind_method( _MD("set_bias","bias"), &Joint2D::set_bias );
ObjectTypeDB::bind_method( _MD("get_bias"), &Joint2D::get_bias );
ADD_PROPERTY( PropertyInfo( Variant::NODE_PATH, "node_a"), _SCS("set_node_a"),_SCS("get_node_a") );
ADD_PROPERTY( PropertyInfo( Variant::NODE_PATH, "node_b"), _SCS("set_node_b"),_SCS("get_node_b") );
ADD_PROPERTY( PropertyInfo( Variant::REAL, "bias/bias",PROPERTY_HINT_RANGE,"0,0.9,0.01"), _SCS("set_bias"),_SCS("get_bias") );
}
Joint2D::Joint2D() {
bias=0;
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
void PinJoint2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_DRAW: {
if (is_inside_scene() && get_scene()->is_editor_hint()) {
draw_line(Point2(-10,0),Point2(+10,0),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(0,-10),Point2(0,+10),Color(0.7,0.6,0.0,0.5),3);
}
} break;
}
}
RID PinJoint2D::_configure_joint() {
Node *node_a = has_node( get_node_a() ) ? get_node( get_node_a() ) : (Node*)NULL;
Node *node_b = has_node( get_node_b() ) ? get_node( get_node_b() ) : (Node*)NULL;
if (!node_a && !node_b)
return RID();
PhysicsBody2D *body_a=node_a ? node_a->cast_to<PhysicsBody2D>() : (PhysicsBody2D*)NULL;
PhysicsBody2D *body_b=node_b ? node_b->cast_to<PhysicsBody2D>() : (PhysicsBody2D*)NULL;
if (!body_a && !body_b)
return RID();
if (!body_a) {
SWAP(body_a,body_b);
} else if (body_b) {
//add a collision exception between both
Physics2DServer::get_singleton()->body_add_collision_exception(body_a->get_rid(),body_b->get_rid());
}
return Physics2DServer::get_singleton()->pin_joint_create(get_global_transform().get_origin(),body_a->get_rid(),body_b?body_b->get_rid():RID());
}
PinJoint2D::PinJoint2D() {
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
void GrooveJoint2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_DRAW: {
if (is_inside_scene() && get_scene()->is_editor_hint()) {
draw_line(Point2(-10,0),Point2(+10,0),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(-10,length),Point2(+10,length),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(0,0),Point2(0,length),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(-10,initial_offset),Point2(+10,initial_offset),Color(0.8,0.8,0.9,0.5),5);
}
} break;
}
}
RID GrooveJoint2D::_configure_joint(){
Node *node_a = has_node( get_node_a() ) ? get_node( get_node_a() ) : (Node*)NULL;
Node *node_b = has_node( get_node_b() ) ? get_node( get_node_b() ) : (Node*)NULL;
if (!node_a || !node_b)
return RID();
PhysicsBody2D *body_a=node_a->cast_to<PhysicsBody2D>();
PhysicsBody2D *body_b=node_b->cast_to<PhysicsBody2D>();
if (!body_a || !body_b)
return RID();
Physics2DServer::get_singleton()->body_add_collision_exception(body_a->get_rid(),body_b->get_rid());
Matrix32 gt = get_global_transform();
Vector2 groove_A1 = gt.get_origin();
Vector2 groove_A2 = gt.xform( Vector2(0,length) );
Vector2 anchor_B = gt.xform( Vector2(0,initial_offset) );
return Physics2DServer::get_singleton()->groove_joint_create(groove_A1,groove_A2,anchor_B,body_a->get_rid(),body_b->get_rid());
}
void GrooveJoint2D::set_length(real_t p_length) {
length=p_length;
update();
}
real_t GrooveJoint2D::get_length() const {
return length;
}
void GrooveJoint2D::set_initial_offset(real_t p_initial_offset) {
initial_offset=p_initial_offset;
update();
}
real_t GrooveJoint2D::get_initial_offset() const {
return initial_offset;
}
void GrooveJoint2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_length","length"),&GrooveJoint2D::set_length);
ObjectTypeDB::bind_method(_MD("get_length"),&GrooveJoint2D::get_length);
ObjectTypeDB::bind_method(_MD("set_initial_offset","offset"),&GrooveJoint2D::set_initial_offset);
ObjectTypeDB::bind_method(_MD("get_initial_offset"),&GrooveJoint2D::get_initial_offset);
ADD_PROPERTY( PropertyInfo( Variant::REAL, "length", PROPERTY_HINT_EXP_RANGE,"1,65535,1"), _SCS("set_length"),_SCS("get_length"));
ADD_PROPERTY( PropertyInfo( Variant::REAL, "initial_offset", PROPERTY_HINT_EXP_RANGE,"1,65535,1"), _SCS("set_initial_offset"),_SCS("get_initial_offset"));
}
GrooveJoint2D::GrooveJoint2D() {
length=50;
initial_offset=25;
}
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
void DampedSpringJoint2D::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_DRAW: {
if (is_inside_scene() && get_scene()->is_editor_hint()) {
draw_line(Point2(-10,0),Point2(+10,0),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(-10,length),Point2(+10,length),Color(0.7,0.6,0.0,0.5),3);
draw_line(Point2(0,0),Point2(0,length),Color(0.7,0.6,0.0,0.5),3);
}
} break;
}
}
RID DampedSpringJoint2D::_configure_joint(){
Node *node_a = has_node( get_node_a() ) ? get_node( get_node_a() ) : (Node*)NULL;
Node *node_b = has_node( get_node_b() ) ? get_node( get_node_b() ) : (Node*)NULL;
if (!node_a || !node_b)
return RID();
PhysicsBody2D *body_a=node_a->cast_to<PhysicsBody2D>();
PhysicsBody2D *body_b=node_b->cast_to<PhysicsBody2D>();
if (!body_a || !body_b)
return RID();
Physics2DServer::get_singleton()->body_add_collision_exception(body_a->get_rid(),body_b->get_rid());
Matrix32 gt = get_global_transform();
Vector2 anchor_A = gt.get_origin();
Vector2 anchor_B = gt.xform( Vector2(0,length) );
RID dsj = Physics2DServer::get_singleton()->damped_spring_joint_create(anchor_A,anchor_B,body_a->get_rid(),body_b->get_rid());
if (rest_length)
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj,Physics2DServer::DAMPED_STRING_REST_LENGTH,rest_length);
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj,Physics2DServer::DAMPED_STRING_STIFFNESS,stiffness);
Physics2DServer::get_singleton()->damped_string_joint_set_param(dsj,Physics2DServer::DAMPED_STRING_DAMPING,damping);
return dsj;
}
void DampedSpringJoint2D::set_length(real_t p_length) {
length=p_length;
update();
}
real_t DampedSpringJoint2D::get_length() const {
return length;
}
void DampedSpringJoint2D::set_rest_length(real_t p_rest_length) {
rest_length=p_rest_length;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(),Physics2DServer::DAMPED_STRING_REST_LENGTH,p_rest_length?p_rest_length:length);
}
real_t DampedSpringJoint2D::get_rest_length() const {
return rest_length;
}
void DampedSpringJoint2D::set_stiffness(real_t p_stiffness) {
stiffness=p_stiffness;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(),Physics2DServer::DAMPED_STRING_STIFFNESS,p_stiffness);
}
real_t DampedSpringJoint2D::get_stiffness() const {
return stiffness;
}
void DampedSpringJoint2D::set_damping(real_t p_damping) {
damping=p_damping;
update();
if (get_joint().is_valid())
Physics2DServer::get_singleton()->damped_string_joint_set_param(get_joint(),Physics2DServer::DAMPED_STRING_DAMPING,p_damping);
}
real_t DampedSpringJoint2D::get_damping() const {
return damping;
}
void DampedSpringJoint2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_length","length"),&DampedSpringJoint2D::set_length);
ObjectTypeDB::bind_method(_MD("get_length"),&DampedSpringJoint2D::get_length);
ObjectTypeDB::bind_method(_MD("set_rest_length","rest_length"),&DampedSpringJoint2D::set_rest_length);
ObjectTypeDB::bind_method(_MD("get_rest_length"),&DampedSpringJoint2D::get_rest_length);
ObjectTypeDB::bind_method(_MD("set_stiffness","stiffness"),&DampedSpringJoint2D::set_stiffness);
ObjectTypeDB::bind_method(_MD("get_stiffness"),&DampedSpringJoint2D::get_stiffness);
ObjectTypeDB::bind_method(_MD("set_damping","damping"),&DampedSpringJoint2D::set_damping);
ObjectTypeDB::bind_method(_MD("get_damping"),&DampedSpringJoint2D::get_damping);
ADD_PROPERTY( PropertyInfo( Variant::REAL, "length", PROPERTY_HINT_EXP_RANGE,"1,65535,1"), _SCS("set_length"),_SCS("get_length"));
ADD_PROPERTY( PropertyInfo( Variant::REAL, "rest_length", PROPERTY_HINT_EXP_RANGE,"0,65535,1"), _SCS("set_rest_length"),_SCS("get_rest_length"));
ADD_PROPERTY( PropertyInfo( Variant::REAL, "stiffness", PROPERTY_HINT_EXP_RANGE,"0.1,64,0.1"), _SCS("set_stiffness"),_SCS("get_stiffness"));
ADD_PROPERTY( PropertyInfo( Variant::REAL, "damping", PROPERTY_HINT_EXP_RANGE,"0.01,16,0.01"), _SCS("set_damping"),_SCS("get_damping"));
}
DampedSpringJoint2D::DampedSpringJoint2D() {
length=50;
rest_length=0;
stiffness=20;
damping=1;
}