d8223ffa75
That year should bring the long-awaited OpenGL ES 3.0 compatible renderer
with state-of-the-art rendering techniques tuned to work as low as middle
end handheld devices - without compromising with the possibilities given
for higher end desktop games of course. Great times ahead for the Godot
community and the gamers that will play our games!
(cherry picked from commit c7bc44d5ad)
743 lines
19 KiB
C++
743 lines
19 KiB
C++
/*************************************************************************/
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/* body_2d_sw.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "body_2d_sw.h"
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#include "space_2d_sw.h"
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#include "area_2d_sw.h"
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#include "physics_2d_server_sw.h"
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void Body2DSW::_update_inertia() {
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if (!user_inertia && get_space() && !inertia_update_list.in_list())
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get_space()->body_add_to_inertia_update_list(&inertia_update_list);
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}
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void Body2DSW::update_inertias() {
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//update shapes and motions
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switch(mode) {
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case Physics2DServer::BODY_MODE_RIGID: {
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if(user_inertia) break;
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//update tensor for allshapes, not the best way but should be somehow OK. (inspired from bullet)
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float total_area=0;
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for (int i=0;i<get_shape_count();i++) {
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total_area+=get_shape_aabb(i).get_area();
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}
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real_t _inertia=0;
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for (int i=0;i<get_shape_count();i++) {
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const Shape2DSW* shape=get_shape(i);
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float area=get_shape_aabb(i).get_area();
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float mass = area * this->mass / total_area;
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Matrix32 mtx = get_shape_transform(i);
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Vector2 scale = mtx.get_scale();
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_inertia += shape->get_moment_of_inertia(mass,scale) + mass * mtx.get_origin().length_squared();
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//Rect2 ab = get_shape_aabb(i);
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//_inertia+=mass*ab.size.dot(ab.size)/12.0f;
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}
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if (_inertia!=0)
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_inv_inertia=1.0/_inertia;
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else
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_inv_inertia=0.0; //wathever
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if (mass)
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_inv_mass=1.0/mass;
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else
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_inv_mass=0;
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} break;
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case Physics2DServer::BODY_MODE_KINEMATIC:
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case Physics2DServer::BODY_MODE_STATIC: {
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_inv_inertia=0;
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_inv_mass=0;
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} break;
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case Physics2DServer::BODY_MODE_CHARACTER: {
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_inv_inertia=0;
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_inv_mass=1.0/mass;
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} break;
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}
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//_update_inertia_tensor();
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//_update_shapes();
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}
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void Body2DSW::set_active(bool p_active) {
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if (active==p_active)
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return;
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active=p_active;
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if (!p_active) {
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if (get_space())
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get_space()->body_remove_from_active_list(&active_list);
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} else {
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if (mode==Physics2DServer::BODY_MODE_STATIC)
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return; //static bodies can't become active
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if (get_space())
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get_space()->body_add_to_active_list(&active_list);
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//still_time=0;
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}
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/*
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if (!space)
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return;
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for(int i=0;i<get_shape_count();i++) {
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Shape &s=shapes[i];
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if (s.bpid>0) {
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get_space()->get_broadphase()->set_active(s.bpid,active);
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}
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}
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*/
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}
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void Body2DSW::set_param(Physics2DServer::BodyParameter p_param, float p_value) {
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switch(p_param) {
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case Physics2DServer::BODY_PARAM_BOUNCE: {
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bounce=p_value;
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} break;
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case Physics2DServer::BODY_PARAM_FRICTION: {
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friction=p_value;
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} break;
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case Physics2DServer::BODY_PARAM_MASS: {
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ERR_FAIL_COND(p_value<=0);
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mass=p_value;
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_update_inertia();
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} break;
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case Physics2DServer::BODY_PARAM_INERTIA: {
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if(p_value<=0) {
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user_inertia = false;
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_update_inertia();
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} else {
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user_inertia = true;
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_inv_inertia = 1.0 / p_value;
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}
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} break;
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case Physics2DServer::BODY_PARAM_GRAVITY_SCALE: {
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gravity_scale=p_value;
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} break;
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case Physics2DServer::BODY_PARAM_LINEAR_DAMP: {
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linear_damp=p_value;
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} break;
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case Physics2DServer::BODY_PARAM_ANGULAR_DAMP: {
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angular_damp=p_value;
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} break;
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default:{}
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}
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}
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float Body2DSW::get_param(Physics2DServer::BodyParameter p_param) const {
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switch(p_param) {
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case Physics2DServer::BODY_PARAM_BOUNCE: {
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return bounce;
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} break;
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case Physics2DServer::BODY_PARAM_FRICTION: {
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return friction;
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} break;
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case Physics2DServer::BODY_PARAM_MASS: {
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return mass;
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} break;
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case Physics2DServer::BODY_PARAM_INERTIA: {
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return _inv_inertia==0 ? 0 : 1.0 / _inv_inertia;
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} break;
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case Physics2DServer::BODY_PARAM_GRAVITY_SCALE: {
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return gravity_scale;
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} break;
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case Physics2DServer::BODY_PARAM_LINEAR_DAMP: {
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return linear_damp;
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} break;
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case Physics2DServer::BODY_PARAM_ANGULAR_DAMP: {
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return angular_damp;
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} break;
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default:{}
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}
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return 0;
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}
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void Body2DSW::set_mode(Physics2DServer::BodyMode p_mode) {
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Physics2DServer::BodyMode prev=mode;
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mode=p_mode;
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switch(p_mode) {
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//CLEAR UP EVERYTHING IN CASE IT NOT WORKS!
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case Physics2DServer::BODY_MODE_STATIC:
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case Physics2DServer::BODY_MODE_KINEMATIC: {
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_set_inv_transform(get_transform().affine_inverse());
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_inv_mass=0;
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_set_static(p_mode==Physics2DServer::BODY_MODE_STATIC);
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set_active(p_mode==Physics2DServer::BODY_MODE_KINEMATIC && contacts.size());
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linear_velocity=Vector2();
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angular_velocity=0;
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if (mode==Physics2DServer::BODY_MODE_KINEMATIC && prev!=mode) {
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first_time_kinematic=true;
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}
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} break;
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case Physics2DServer::BODY_MODE_RIGID: {
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_inv_mass=mass>0?(1.0/mass):0;
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_set_static(false);
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} break;
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case Physics2DServer::BODY_MODE_CHARACTER: {
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_inv_mass=mass>0?(1.0/mass):0;
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_set_static(false);
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} break;
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}
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_update_inertia();
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//if (get_space())
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// _update_queries();
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}
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Physics2DServer::BodyMode Body2DSW::get_mode() const {
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return mode;
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}
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void Body2DSW::_shapes_changed() {
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_update_inertia();
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wakeup_neighbours();
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}
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void Body2DSW::set_state(Physics2DServer::BodyState p_state, const Variant& p_variant) {
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switch(p_state) {
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case Physics2DServer::BODY_STATE_TRANSFORM: {
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if (mode==Physics2DServer::BODY_MODE_KINEMATIC) {
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new_transform=p_variant;
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//wakeup_neighbours();
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set_active(true);
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if (first_time_kinematic) {
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_set_transform(p_variant);
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_set_inv_transform(get_transform().affine_inverse());
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first_time_kinematic=false;
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}
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} else if (mode==Physics2DServer::BODY_MODE_STATIC) {
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_set_transform(p_variant);
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_set_inv_transform(get_transform().affine_inverse());
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wakeup_neighbours();
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} else {
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Matrix32 t = p_variant;
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t.orthonormalize();
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new_transform=get_transform(); //used as old to compute motion
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if (t==new_transform)
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break;
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_set_transform(t);
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_set_inv_transform(get_transform().inverse());
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}
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wakeup();
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} break;
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case Physics2DServer::BODY_STATE_LINEAR_VELOCITY: {
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//if (mode==Physics2DServer::BODY_MODE_STATIC)
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// break;
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linear_velocity=p_variant;
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wakeup();
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} break;
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case Physics2DServer::BODY_STATE_ANGULAR_VELOCITY: {
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//if (mode!=Physics2DServer::BODY_MODE_RIGID)
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// break;
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angular_velocity=p_variant;
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wakeup();
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} break;
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case Physics2DServer::BODY_STATE_SLEEPING: {
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//?
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if (mode==Physics2DServer::BODY_MODE_STATIC || mode==Physics2DServer::BODY_MODE_KINEMATIC)
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break;
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bool do_sleep=p_variant;
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if (do_sleep) {
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linear_velocity=Vector2();
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//biased_linear_velocity=Vector3();
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angular_velocity=0;
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//biased_angular_velocity=Vector3();
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set_active(false);
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} else {
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if (mode!=Physics2DServer::BODY_MODE_STATIC)
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set_active(true);
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}
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} break;
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case Physics2DServer::BODY_STATE_CAN_SLEEP: {
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can_sleep=p_variant;
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if (mode==Physics2DServer::BODY_MODE_RIGID && !active && !can_sleep)
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set_active(true);
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} break;
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}
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}
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Variant Body2DSW::get_state(Physics2DServer::BodyState p_state) const {
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switch(p_state) {
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case Physics2DServer::BODY_STATE_TRANSFORM: {
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return get_transform();
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} break;
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case Physics2DServer::BODY_STATE_LINEAR_VELOCITY: {
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return linear_velocity;
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} break;
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case Physics2DServer::BODY_STATE_ANGULAR_VELOCITY: {
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return angular_velocity;
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} break;
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case Physics2DServer::BODY_STATE_SLEEPING: {
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return !is_active();
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} break;
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case Physics2DServer::BODY_STATE_CAN_SLEEP: {
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return can_sleep;
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} break;
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}
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return Variant();
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}
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void Body2DSW::set_space(Space2DSW *p_space){
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if (get_space()) {
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wakeup_neighbours();
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if (inertia_update_list.in_list())
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get_space()->body_remove_from_inertia_update_list(&inertia_update_list);
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if (active_list.in_list())
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get_space()->body_remove_from_active_list(&active_list);
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if (direct_state_query_list.in_list())
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get_space()->body_remove_from_state_query_list(&direct_state_query_list);
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}
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_set_space(p_space);
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if (get_space()) {
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_update_inertia();
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if (active)
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get_space()->body_add_to_active_list(&active_list);
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// _update_queries();
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//if (is_active()) {
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// active=false;
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// set_active(true);
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//}
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}
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first_integration=false;
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}
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void Body2DSW::_compute_area_gravity_and_dampenings(const Area2DSW *p_area) {
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if (p_area->is_gravity_point()) {
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if(p_area->get_gravity_distance_scale() > 0) {
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Vector2 v = p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin();
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gravity += v.normalized() * (p_area->get_gravity() / Math::pow(v.length() * p_area->get_gravity_distance_scale()+1, 2) );
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} else {
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gravity += (p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin()).normalized() * p_area->get_gravity();
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}
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} else {
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gravity += p_area->get_gravity_vector() * p_area->get_gravity();
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}
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area_linear_damp += p_area->get_linear_damp();
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area_angular_damp += p_area->get_angular_damp();
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}
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void Body2DSW::integrate_forces(real_t p_step) {
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if (mode==Physics2DServer::BODY_MODE_STATIC)
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return;
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Area2DSW *def_area = get_space()->get_default_area();
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// Area2DSW *damp_area = def_area;
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ERR_FAIL_COND(!def_area);
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int ac = areas.size();
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bool stopped = false;
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gravity = Vector2(0,0);
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area_angular_damp = 0;
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area_linear_damp = 0;
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if (ac) {
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areas.sort();
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const AreaCMP *aa = &areas[0];
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// damp_area = aa[ac-1].area;
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for(int i=ac-1;i>=0 && !stopped;i--) {
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Physics2DServer::AreaSpaceOverrideMode mode=aa[i].area->get_space_override_mode();
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switch (mode) {
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case Physics2DServer::AREA_SPACE_OVERRIDE_COMBINE:
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case Physics2DServer::AREA_SPACE_OVERRIDE_COMBINE_REPLACE: {
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_compute_area_gravity_and_dampenings(aa[i].area);
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stopped = mode==Physics2DServer::AREA_SPACE_OVERRIDE_COMBINE_REPLACE;
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} break;
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case Physics2DServer::AREA_SPACE_OVERRIDE_REPLACE:
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case Physics2DServer::AREA_SPACE_OVERRIDE_REPLACE_COMBINE: {
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gravity = Vector2(0,0);
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area_angular_damp = 0;
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area_linear_damp = 0;
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_compute_area_gravity_and_dampenings(aa[i].area);
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stopped = mode==Physics2DServer::AREA_SPACE_OVERRIDE_REPLACE;
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} break;
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default: {}
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}
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}
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}
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if( !stopped ) {
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_compute_area_gravity_and_dampenings(def_area);
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}
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gravity*=gravity_scale;
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// If less than 0, override dampenings with that of the Body2D
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if (angular_damp>=0)
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area_angular_damp = angular_damp;
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//else
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// area_angular_damp=damp_area->get_angular_damp();
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if (linear_damp>=0)
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area_linear_damp = linear_damp;
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//else
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// area_linear_damp=damp_area->get_linear_damp();
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Vector2 motion;
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bool do_motion=false;
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if (mode==Physics2DServer::BODY_MODE_KINEMATIC) {
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//compute motion, angular and etc. velocities from prev transform
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linear_velocity = (new_transform.elements[2] - get_transform().elements[2])/p_step;
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real_t rot = new_transform.affine_inverse().basis_xform(get_transform().elements[1]).angle();
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angular_velocity = rot / p_step;
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motion = new_transform.elements[2] - get_transform().elements[2];
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do_motion=true;
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//for(int i=0;i<get_shape_count();i++) {
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// set_shape_kinematic_advance(i,Vector2());
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// set_shape_kinematic_retreat(i,0);
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//}
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} else {
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if (!omit_force_integration && !first_integration) {
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//overriden by direct state query
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Vector2 force=gravity*mass;
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force+=applied_force;
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real_t torque=applied_torque;
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real_t damp = 1.0 - p_step * area_linear_damp;
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if (damp<0) // reached zero in the given time
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damp=0;
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real_t angular_damp = 1.0 - p_step * area_angular_damp;
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if (angular_damp<0) // reached zero in the given time
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angular_damp=0;
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linear_velocity*=damp;
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angular_velocity*=angular_damp;
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linear_velocity+=_inv_mass * force * p_step;
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angular_velocity+=_inv_inertia * torque * p_step;
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}
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if (continuous_cd_mode!=Physics2DServer::CCD_MODE_DISABLED) {
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|
|
|
motion = new_transform.get_origin() - get_transform().get_origin();
|
|
//linear_velocity*p_step;
|
|
do_motion=true;
|
|
}
|
|
}
|
|
|
|
|
|
//motion=linear_velocity*p_step;
|
|
|
|
first_integration=false;
|
|
biased_angular_velocity=0;
|
|
biased_linear_velocity=Vector2();
|
|
|
|
if (do_motion) {//shapes temporarily extend for raycast
|
|
_update_shapes_with_motion(motion);
|
|
}
|
|
|
|
// damp_area=NULL; // clear the area, so it is set in the next frame
|
|
def_area=NULL; // clear the area, so it is set in the next frame
|
|
contact_count=0;
|
|
|
|
}
|
|
|
|
void Body2DSW::integrate_velocities(real_t p_step) {
|
|
|
|
if (mode==Physics2DServer::BODY_MODE_STATIC)
|
|
return;
|
|
|
|
if (fi_callback)
|
|
get_space()->body_add_to_state_query_list(&direct_state_query_list);
|
|
|
|
if (mode==Physics2DServer::BODY_MODE_KINEMATIC) {
|
|
|
|
_set_transform(new_transform,false);
|
|
_set_inv_transform(new_transform.affine_inverse());
|
|
if (contacts.size()==0 && linear_velocity==Vector2() && angular_velocity==0)
|
|
set_active(false); //stopped moving, deactivate
|
|
return;
|
|
}
|
|
|
|
real_t total_angular_velocity = angular_velocity+biased_angular_velocity;
|
|
Vector2 total_linear_velocity=linear_velocity+biased_linear_velocity;
|
|
|
|
real_t angle = get_transform().get_rotation() - total_angular_velocity * p_step;
|
|
Vector2 pos = get_transform().get_origin() + total_linear_velocity * p_step;
|
|
|
|
_set_transform(Matrix32(angle,pos),continuous_cd_mode==Physics2DServer::CCD_MODE_DISABLED);
|
|
_set_inv_transform(get_transform().inverse());
|
|
|
|
if (continuous_cd_mode!=Physics2DServer::CCD_MODE_DISABLED)
|
|
new_transform=get_transform();
|
|
|
|
//_update_inertia_tensor();
|
|
}
|
|
|
|
|
|
|
|
void Body2DSW::wakeup_neighbours() {
|
|
|
|
|
|
|
|
for(Map<Constraint2DSW*,int>::Element *E=constraint_map.front();E;E=E->next()) {
|
|
|
|
const Constraint2DSW *c=E->key();
|
|
Body2DSW **n = c->get_body_ptr();
|
|
int bc=c->get_body_count();
|
|
|
|
for(int i=0;i<bc;i++) {
|
|
|
|
if (i==E->get())
|
|
continue;
|
|
Body2DSW *b = n[i];
|
|
if (b->mode!=Physics2DServer::BODY_MODE_RIGID)
|
|
continue;
|
|
|
|
if (!b->is_active())
|
|
b->set_active(true);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Body2DSW::call_queries() {
|
|
|
|
|
|
if (fi_callback) {
|
|
|
|
Physics2DDirectBodyStateSW *dbs = Physics2DDirectBodyStateSW::singleton;
|
|
dbs->body=this;
|
|
|
|
Variant v=dbs;
|
|
const Variant *vp[2]={&v,&fi_callback->callback_udata};
|
|
|
|
|
|
Object *obj = ObjectDB::get_instance(fi_callback->id);
|
|
if (!obj) {
|
|
|
|
set_force_integration_callback(0,StringName());
|
|
} else {
|
|
Variant::CallError ce;
|
|
if (fi_callback->callback_udata.get_type()) {
|
|
|
|
obj->call(fi_callback->method,vp,2,ce);
|
|
|
|
} else {
|
|
obj->call(fi_callback->method,vp,1,ce);
|
|
}
|
|
}
|
|
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
bool Body2DSW::sleep_test(real_t p_step) {
|
|
|
|
if (mode==Physics2DServer::BODY_MODE_STATIC || mode==Physics2DServer::BODY_MODE_KINEMATIC)
|
|
return true; //
|
|
else if (mode==Physics2DServer::BODY_MODE_CHARACTER)
|
|
return !active; // characters and kinematic bodies don't sleep unless asked to sleep
|
|
else if (!can_sleep)
|
|
return false;
|
|
|
|
|
|
|
|
|
|
if (Math::abs(angular_velocity)<get_space()->get_body_angular_velocity_sleep_treshold() && Math::abs(linear_velocity.length_squared()) < get_space()->get_body_linear_velocity_sleep_treshold()*get_space()->get_body_linear_velocity_sleep_treshold()) {
|
|
|
|
still_time+=p_step;
|
|
|
|
return still_time > get_space()->get_body_time_to_sleep();
|
|
} else {
|
|
|
|
still_time=0; //maybe this should be set to 0 on set_active?
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
void Body2DSW::set_force_integration_callback(ObjectID p_id,const StringName& p_method,const Variant& p_udata) {
|
|
|
|
if (fi_callback) {
|
|
|
|
memdelete(fi_callback);
|
|
fi_callback=NULL;
|
|
}
|
|
|
|
|
|
if (p_id!=0) {
|
|
|
|
fi_callback=memnew(ForceIntegrationCallback);
|
|
fi_callback->id=p_id;
|
|
fi_callback->method=p_method;
|
|
fi_callback->callback_udata=p_udata;
|
|
}
|
|
|
|
}
|
|
|
|
Body2DSW::Body2DSW() : CollisionObject2DSW(TYPE_BODY), active_list(this), inertia_update_list(this), direct_state_query_list(this) {
|
|
|
|
|
|
mode=Physics2DServer::BODY_MODE_RIGID;
|
|
active=true;
|
|
angular_velocity=0;
|
|
biased_angular_velocity=0;
|
|
mass=1;
|
|
user_inertia=false;
|
|
_inv_inertia=0;
|
|
_inv_mass=1;
|
|
bounce=0;
|
|
friction=1;
|
|
omit_force_integration=false;
|
|
applied_torque=0;
|
|
island_step=0;
|
|
island_next=NULL;
|
|
island_list_next=NULL;
|
|
_set_static(false);
|
|
first_time_kinematic=false;
|
|
linear_damp=-1;
|
|
angular_damp=-1;
|
|
area_angular_damp=0;
|
|
area_linear_damp=0;
|
|
contact_count=0;
|
|
gravity_scale=1.0;
|
|
using_one_way_cache=false;
|
|
one_way_collision_max_depth=0.1;
|
|
first_integration=false;
|
|
|
|
still_time=0;
|
|
continuous_cd_mode=Physics2DServer::CCD_MODE_DISABLED;
|
|
can_sleep=false;
|
|
fi_callback=NULL;
|
|
|
|
}
|
|
|
|
Body2DSW::~Body2DSW() {
|
|
|
|
if (fi_callback)
|
|
memdelete(fi_callback);
|
|
}
|
|
|
|
Physics2DDirectBodyStateSW *Physics2DDirectBodyStateSW::singleton=NULL;
|
|
|
|
Physics2DDirectSpaceState* Physics2DDirectBodyStateSW::get_space_state() {
|
|
|
|
return body->get_space()->get_direct_state();
|
|
}
|
|
|
|
|
|
Variant Physics2DDirectBodyStateSW::get_contact_collider_shape_metadata(int p_contact_idx) const {
|
|
|
|
ERR_FAIL_INDEX_V(p_contact_idx,body->contact_count,Variant());
|
|
|
|
if (!Physics2DServerSW::singletonsw->body_owner.owns(body->contacts[p_contact_idx].collider)) {
|
|
|
|
return Variant();
|
|
}
|
|
Body2DSW *other = Physics2DServerSW::singletonsw->body_owner.get(body->contacts[p_contact_idx].collider);
|
|
|
|
int sidx = body->contacts[p_contact_idx].collider_shape;
|
|
if (sidx<0 || sidx>=other->get_shape_count()) {
|
|
|
|
return Variant();
|
|
}
|
|
|
|
|
|
return other->get_shape_metadata(sidx);
|
|
}
|