virtualx-engine/servers/physics_2d/space_2d_sw.cpp
Juan Linietsky b324ff7ea5 A bit of everything:
-IMA-ADPCM support for samples, this means that sound effects can be compressed and use 4 timess less RAM.
-New 3D import workflow based on Wavefront OBJ. Import single objects as mesh resources instead of full scenes. Many people prefers to work this way. Just like the rest of the imported resources, these are updated in realtime if modified externally.
-Mesh resources now support naming surfaces. This helps reimporting to identify which user-created materials must be kept.
-Several fixes and improvements to SurfaceTool.
-Anti Aliasing added to WorldEnvironment effects (using FXAA)
-2D Physics bodies (RigidBody, KinematicBody, etc), Raycasts, Tilemap, etc support collision layers. This makes easy to group which objects collide against which.
-2D Trigger shapes can now also trigger collision reporting in other 2D bodies (it used to be in Area2D before)
-Viewport render target textures can now be filtered.
-Few fixes in GDscript make it easier to work with static functions and class members.
-Several and many bugfixes.
2014-05-14 01:22:15 -03:00

677 lines
20 KiB
C++

/*************************************************************************/
/* space_2d_sw.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 "space_2d_sw.h"
#include "collision_solver_2d_sw.h"
#include "physics_2d_server_sw.h"
_FORCE_INLINE_ static bool _match_object_type_query(CollisionObject2DSW *p_object, uint32_t p_layer_mask, uint32_t p_type_mask) {
if ((p_object->get_layer_mask()&p_layer_mask)==0)
return false;
if (p_object->get_type()==CollisionObject2DSW::TYPE_AREA && !(p_type_mask&Physics2DDirectSpaceState::TYPE_MASK_AREA))
return false;
Body2DSW *body = static_cast<Body2DSW*>(p_object);
return (1<<body->get_mode())&p_type_mask;
}
bool Physics2DDirectSpaceStateSW::intersect_ray(const Vector2& p_from, const Vector2& p_to,RayResult &r_result,const Set<RID>& p_exclude,uint32_t p_layer_mask,uint32_t p_object_type_mask) {
ERR_FAIL_COND_V(space->locked,false);
Vector2 begin,end;
Vector2 normal;
begin=p_from;
end=p_to;
normal=(end-begin).normalized();
int amount = space->broadphase->cull_segment(begin,end,space->intersection_query_results,Space2DSW::INTERSECTION_QUERY_MAX,space->intersection_query_subindex_results);
//todo, create another array tha references results, compute AABBs and check closest point to ray origin, sort, and stop evaluating results when beyond first collision
bool collided=false;
Vector2 res_point,res_normal;
int res_shape;
const CollisionObject2DSW *res_obj;
real_t min_d=1e10;
for(int i=0;i<amount;i++) {
if (!_match_object_type_query(space->intersection_query_results[i],p_layer_mask,p_object_type_mask))
continue;
if (p_exclude.has( space->intersection_query_results[i]->get_self()))
continue;
const CollisionObject2DSW *col_obj=space->intersection_query_results[i];
int shape_idx=space->intersection_query_subindex_results[i];
Matrix32 inv_xform = col_obj->get_shape_inv_transform(shape_idx) * col_obj->get_inv_transform();
Vector2 local_from = inv_xform.xform(begin);
Vector2 local_to = inv_xform.xform(end);
/*local_from = col_obj->get_inv_transform().xform(begin);
local_from = col_obj->get_shape_inv_transform(shape_idx).xform(local_from);
local_to = col_obj->get_inv_transform().xform(end);
local_to = col_obj->get_shape_inv_transform(shape_idx).xform(local_to);*/
const Shape2DSW *shape = col_obj->get_shape(shape_idx);
Vector2 shape_point,shape_normal;
if (shape->intersect_segment(local_from,local_to,shape_point,shape_normal)) {
//print_line("inters sgment!");
Matrix32 xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
shape_point=xform.xform(shape_point);
real_t ld = normal.dot(shape_point);
if (ld<min_d) {
min_d=ld;
res_point=shape_point;
res_normal=inv_xform.basis_xform_inv(shape_normal).normalized();
res_shape=shape_idx;
res_obj=col_obj;
collided=true;
}
}
}
if (!collided)
return false;
r_result.collider_id=res_obj->get_instance_id();
if (r_result.collider_id!=0)
r_result.collider=ObjectDB::get_instance(r_result.collider_id);
r_result.normal=res_normal;
r_result.position=res_point;
r_result.rid=res_obj->get_self();
r_result.shape=res_shape;
return true;
}
int Physics2DDirectSpaceStateSW::intersect_shape(const RID& p_shape, const Matrix32& p_xform,const Vector2& p_motion,float p_margin,ShapeResult *r_results,int p_result_max,const Set<RID>& p_exclude,uint32_t p_layer_mask,uint32_t p_object_type_mask) {
if (p_result_max<=0)
return 0;
Shape2DSW *shape = static_cast<Physics2DServerSW*>(Physics2DServer::get_singleton())->shape_owner.get(p_shape);
ERR_FAIL_COND_V(!shape,0);
Rect2 aabb = p_xform.xform(shape->get_aabb());
aabb=aabb.grow(p_margin);
int amount = space->broadphase->cull_aabb(aabb,space->intersection_query_results,Space2DSW::INTERSECTION_QUERY_MAX,space->intersection_query_subindex_results);
bool collided=false;
int cc=0;
for(int i=0;i<amount;i++) {
if (!_match_object_type_query(space->intersection_query_results[i],p_layer_mask,p_object_type_mask))
continue;
if (p_exclude.has( space->intersection_query_results[i]->get_self()))
continue;
const CollisionObject2DSW *col_obj=space->intersection_query_results[i];
int shape_idx=space->intersection_query_subindex_results[i];
if (!CollisionSolver2DSW::solve(shape,p_xform,p_motion,col_obj->get_shape(shape_idx),col_obj->get_transform() * col_obj->get_shape_transform(shape_idx),Vector2(),NULL,NULL,NULL,p_margin))
continue;
r_results[cc].collider_id=col_obj->get_instance_id();
if (r_results[cc].collider_id!=0)
r_results[cc].collider=ObjectDB::get_instance(r_results[cc].collider_id);
r_results[cc].rid=col_obj->get_self();
r_results[cc].shape=shape_idx;
cc++;
}
return cc;
}
bool Physics2DDirectSpaceStateSW::cast_motion(const RID& p_shape, const Matrix32& p_xform,const Vector2& p_motion,float p_margin,float &p_closest_safe,float &p_closest_unsafe, const Set<RID>& p_exclude,uint32_t p_layer_mask,uint32_t p_object_type_mask) {
Shape2DSW *shape = static_cast<Physics2DServerSW*>(Physics2DServer::get_singleton())->shape_owner.get(p_shape);
ERR_FAIL_COND_V(!shape,false);
Rect2 aabb = p_xform.xform(shape->get_aabb());
aabb=aabb.merge(Rect2(aabb.pos+p_motion,aabb.size)); //motion
aabb=aabb.grow(p_margin);
//if (p_motion!=Vector2())
// print_line(p_motion);
int amount = space->broadphase->cull_aabb(aabb,space->intersection_query_results,Space2DSW::INTERSECTION_QUERY_MAX,space->intersection_query_subindex_results);
float best_safe=1;
float best_unsafe=1;
for(int i=0;i<amount;i++) {
if (!_match_object_type_query(space->intersection_query_results[i],p_layer_mask,p_object_type_mask))
continue;
if (p_exclude.has( space->intersection_query_results[i]->get_self()))
continue; //ignore excluded
const CollisionObject2DSW *col_obj=space->intersection_query_results[i];
int shape_idx=space->intersection_query_subindex_results[i];
Matrix32 col_obj_xform = col_obj->get_transform() * col_obj->get_shape_transform(shape_idx);
//test initial overlap, does it collide if going all the way?
if (!CollisionSolver2DSW::solve(shape,p_xform,p_motion,col_obj->get_shape(shape_idx),col_obj_xform,Vector2() ,NULL,NULL,NULL,p_margin)) {
continue;
}
//test initial overlap
if (CollisionSolver2DSW::solve(shape,p_xform,Vector2(),col_obj->get_shape(shape_idx),col_obj_xform,Vector2() ,NULL,NULL,NULL,p_margin)) {
return false;
}
//just do kinematic solving
float low=0;
float hi=1;
Vector2 mnormal=p_motion.normalized();
for(int i=0;i<8;i++) { //steps should be customizable..
Matrix32 xfa = p_xform;
float ofs = (low+hi)*0.5;
Vector2 sep=mnormal; //important optimization for this to work fast enough
bool collided = CollisionSolver2DSW::solve(shape,p_xform,p_motion*ofs,col_obj->get_shape(shape_idx),col_obj_xform,Vector2(),NULL,NULL,&sep,p_margin);
if (collided) {
hi=ofs;
} else {
low=ofs;
}
}
if (low<best_safe) {
best_safe=low;
best_unsafe=hi;
}
}
p_closest_safe=best_safe;
p_closest_unsafe=best_unsafe;
return true;
}
bool Physics2DDirectSpaceStateSW::collide_shape(RID p_shape, const Matrix32& p_shape_xform,const Vector2& p_motion,float p_margin,Vector2 *r_results,int p_result_max,int &r_result_count, const Set<RID>& p_exclude,uint32_t p_layer_mask,uint32_t p_object_type_mask) {
if (p_result_max<=0)
return 0;
Shape2DSW *shape = static_cast<Physics2DServerSW*>(Physics2DServer::get_singleton())->shape_owner.get(p_shape);
ERR_FAIL_COND_V(!shape,0);
Rect2 aabb = p_shape_xform.xform(shape->get_aabb());
aabb=aabb.merge(Rect2(aabb.pos+p_motion,aabb.size)); //motion
aabb=aabb.grow(p_margin);
int amount = space->broadphase->cull_aabb(aabb,space->intersection_query_results,Space2DSW::INTERSECTION_QUERY_MAX,space->intersection_query_subindex_results);
bool collided=false;
int cc=0;
r_result_count=0;
Physics2DServerSW::CollCbkData cbk;
cbk.max=p_result_max;
cbk.amount=0;
cbk.ptr=r_results;
CollisionSolver2DSW::CallbackResult cbkres=NULL;
Physics2DServerSW::CollCbkData *cbkptr=NULL;
if (p_result_max>0) {
cbkptr=&cbk;
cbkres=Physics2DServerSW::_shape_col_cbk;
}
for(int i=0;i<amount;i++) {
if (!_match_object_type_query(space->intersection_query_results[i],p_layer_mask,p_object_type_mask))
continue;
const CollisionObject2DSW *col_obj=space->intersection_query_results[i];
int shape_idx=space->intersection_query_subindex_results[i];
if (p_exclude.has( col_obj->get_self() ))
continue;
if (CollisionSolver2DSW::solve(shape,p_shape_xform,p_motion,col_obj->get_shape(shape_idx),col_obj->get_transform() * col_obj->get_shape_transform(shape_idx),Vector2(),cbkres,cbkptr,NULL,p_margin)) {
collided=true;
}
}
r_result_count=cbk.amount;
return collided;
}
struct _RestCallbackData {
const CollisionObject2DSW *object;
const CollisionObject2DSW *best_object;
int shape;
int best_shape;
Vector2 best_contact;
Vector2 best_normal;
float best_len;
};
static void _rest_cbk_result(const Vector2& p_point_A,const Vector2& p_point_B,void *p_userdata) {
_RestCallbackData *rd=(_RestCallbackData*)p_userdata;
Vector2 contact_rel = p_point_B - p_point_A;
float len = contact_rel.length();
if (len <= rd->best_len)
return;
rd->best_len=len;
rd->best_contact=p_point_B;
rd->best_normal=contact_rel/len;
rd->best_object=rd->object;
rd->best_shape=rd->shape;
}
bool Physics2DDirectSpaceStateSW::rest_info(RID p_shape, const Matrix32& p_shape_xform,const Vector2& p_motion,float p_margin,ShapeRestInfo *r_info, const Set<RID>& p_exclude,uint32_t p_layer_mask,uint32_t p_object_type_mask) {
Shape2DSW *shape = static_cast<Physics2DServerSW*>(Physics2DServer::get_singleton())->shape_owner.get(p_shape);
ERR_FAIL_COND_V(!shape,0);
Rect2 aabb = p_shape_xform.xform(shape->get_aabb());
aabb=aabb.merge(Rect2(aabb.pos+p_motion,aabb.size)); //motion
aabb=aabb.grow(p_margin);
int amount = space->broadphase->cull_aabb(aabb,space->intersection_query_results,Space2DSW::INTERSECTION_QUERY_MAX,space->intersection_query_subindex_results);
_RestCallbackData rcd;
rcd.best_len=0;
rcd.best_object=NULL;
rcd.best_shape=0;
for(int i=0;i<amount;i++) {
if (!_match_object_type_query(space->intersection_query_results[i],p_layer_mask,p_object_type_mask))
continue;
const CollisionObject2DSW *col_obj=space->intersection_query_results[i];
int shape_idx=space->intersection_query_subindex_results[i];
if (p_exclude.has( col_obj->get_self() ))
continue;
rcd.object=col_obj;
rcd.shape=shape_idx;
bool sc = CollisionSolver2DSW::solve(shape,p_shape_xform,p_motion,col_obj->get_shape(shape_idx),col_obj->get_transform() * col_obj->get_shape_transform(shape_idx),Vector2() ,_rest_cbk_result,&rcd,NULL,p_margin);
if (!sc)
continue;
}
if (rcd.best_len==0)
return false;
r_info->collider_id=rcd.best_object->get_instance_id();
r_info->shape=rcd.best_shape;
r_info->normal=rcd.best_normal;
r_info->point=rcd.best_contact;
r_info->rid=rcd.best_object->get_self();
if (rcd.best_object->get_type()==CollisionObject2DSW::TYPE_BODY) {
const Body2DSW *body = static_cast<const Body2DSW*>(rcd.best_object);
Vector2 rel_vec = r_info->point-body->get_transform().get_origin();
r_info->linear_velocity = Vector2(-body->get_angular_velocity() * rel_vec.y, body->get_angular_velocity() * rel_vec.x) + body->get_linear_velocity();
} else {
r_info->linear_velocity=Vector2();
}
return true;
}
Physics2DDirectSpaceStateSW::Physics2DDirectSpaceStateSW() {
space=NULL;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
void* Space2DSW::_broadphase_pair(CollisionObject2DSW *A,int p_subindex_A,CollisionObject2DSW *B,int p_subindex_B,void *p_self) {
CollisionObject2DSW::Type type_A=A->get_type();
CollisionObject2DSW::Type type_B=B->get_type();
if (type_A>type_B) {
SWAP(A,B);
SWAP(p_subindex_A,p_subindex_B);
SWAP(type_A,type_B);
}
Space2DSW *self = (Space2DSW*)p_self;
if (type_A==CollisionObject2DSW::TYPE_AREA) {
ERR_FAIL_COND_V(type_B!=CollisionObject2DSW::TYPE_BODY,NULL);
Area2DSW *area=static_cast<Area2DSW*>(A);
Body2DSW *body=static_cast<Body2DSW*>(B);
AreaPair2DSW *area_pair = memnew(AreaPair2DSW(body,p_subindex_B,area,p_subindex_A) );
return area_pair;
} else {
BodyPair2DSW *b = memnew( BodyPair2DSW((Body2DSW*)A,p_subindex_A,(Body2DSW*)B,p_subindex_B) );
return b;
}
return NULL;
}
void Space2DSW::_broadphase_unpair(CollisionObject2DSW *A,int p_subindex_A,CollisionObject2DSW *B,int p_subindex_B,void *p_data,void *p_self) {
Space2DSW *self = (Space2DSW*)p_self;
Constraint2DSW *c = (Constraint2DSW*)p_data;
memdelete(c);
}
const SelfList<Body2DSW>::List& Space2DSW::get_active_body_list() const {
return active_list;
}
void Space2DSW::body_add_to_active_list(SelfList<Body2DSW>* p_body) {
active_list.add(p_body);
}
void Space2DSW::body_remove_from_active_list(SelfList<Body2DSW>* p_body) {
active_list.remove(p_body);
}
void Space2DSW::body_add_to_inertia_update_list(SelfList<Body2DSW>* p_body) {
inertia_update_list.add(p_body);
}
void Space2DSW::body_remove_from_inertia_update_list(SelfList<Body2DSW>* p_body) {
inertia_update_list.remove(p_body);
}
BroadPhase2DSW *Space2DSW::get_broadphase() {
return broadphase;
}
void Space2DSW::add_object(CollisionObject2DSW *p_object) {
ERR_FAIL_COND( objects.has(p_object) );
objects.insert(p_object);
}
void Space2DSW::remove_object(CollisionObject2DSW *p_object) {
ERR_FAIL_COND( !objects.has(p_object) );
objects.erase(p_object);
}
const Set<CollisionObject2DSW*> &Space2DSW::get_objects() const {
return objects;
}
void Space2DSW::body_add_to_state_query_list(SelfList<Body2DSW>* p_body) {
state_query_list.add(p_body);
}
void Space2DSW::body_remove_from_state_query_list(SelfList<Body2DSW>* p_body) {
state_query_list.remove(p_body);
}
void Space2DSW::area_add_to_monitor_query_list(SelfList<Area2DSW>* p_area) {
monitor_query_list.add(p_area);
}
void Space2DSW::area_remove_from_monitor_query_list(SelfList<Area2DSW>* p_area) {
monitor_query_list.remove(p_area);
}
void Space2DSW::area_add_to_moved_list(SelfList<Area2DSW>* p_area) {
area_moved_list.add(p_area);
}
void Space2DSW::area_remove_from_moved_list(SelfList<Area2DSW>* p_area) {
area_moved_list.remove(p_area);
}
const SelfList<Area2DSW>::List& Space2DSW::get_moved_area_list() const {
return area_moved_list;
}
void Space2DSW::call_queries() {
while(state_query_list.first()) {
Body2DSW * b = state_query_list.first()->self();
b->call_queries();
state_query_list.remove(state_query_list.first());
}
while(monitor_query_list.first()) {
Area2DSW * a = monitor_query_list.first()->self();
a->call_queries();
monitor_query_list.remove(monitor_query_list.first());
}
}
void Space2DSW::setup() {
while(inertia_update_list.first()) {
inertia_update_list.first()->self()->update_inertias();
inertia_update_list.remove(inertia_update_list.first());
}
}
void Space2DSW::update() {
broadphase->update();
}
void Space2DSW::set_param(Physics2DServer::SpaceParameter p_param, real_t p_value) {
switch(p_param) {
case Physics2DServer::SPACE_PARAM_CONTACT_RECYCLE_RADIUS: contact_recycle_radius=p_value; break;
case Physics2DServer::SPACE_PARAM_CONTACT_MAX_SEPARATION: contact_max_separation=p_value; break;
case Physics2DServer::SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION: contact_max_allowed_penetration=p_value; break;
case Physics2DServer::SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_TRESHOLD: body_linear_velocity_sleep_treshold=p_value; break;
case Physics2DServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_TRESHOLD: body_angular_velocity_sleep_treshold=p_value; break;
case Physics2DServer::SPACE_PARAM_BODY_TIME_TO_SLEEP: body_time_to_sleep=p_value; break;
case Physics2DServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_DAMP_RATIO: body_angular_velocity_damp_ratio=p_value; break;
case Physics2DServer::SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS: constraint_bias=p_value; break;
}
}
real_t Space2DSW::get_param(Physics2DServer::SpaceParameter p_param) const {
switch(p_param) {
case Physics2DServer::SPACE_PARAM_CONTACT_RECYCLE_RADIUS: return contact_recycle_radius;
case Physics2DServer::SPACE_PARAM_CONTACT_MAX_SEPARATION: return contact_max_separation;
case Physics2DServer::SPACE_PARAM_BODY_MAX_ALLOWED_PENETRATION: return contact_max_allowed_penetration;
case Physics2DServer::SPACE_PARAM_BODY_LINEAR_VELOCITY_SLEEP_TRESHOLD: return body_linear_velocity_sleep_treshold;
case Physics2DServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_SLEEP_TRESHOLD: return body_angular_velocity_sleep_treshold;
case Physics2DServer::SPACE_PARAM_BODY_TIME_TO_SLEEP: return body_time_to_sleep;
case Physics2DServer::SPACE_PARAM_BODY_ANGULAR_VELOCITY_DAMP_RATIO: return body_angular_velocity_damp_ratio;
case Physics2DServer::SPACE_PARAM_CONSTRAINT_DEFAULT_BIAS: return constraint_bias;
}
return 0;
}
void Space2DSW::lock() {
locked=true;
}
void Space2DSW::unlock() {
locked=false;
}
bool Space2DSW::is_locked() const {
return locked;
}
Physics2DDirectSpaceStateSW *Space2DSW::get_direct_state() {
return direct_access;
}
Space2DSW::Space2DSW() {
locked=false;
contact_recycle_radius=0.01;
contact_max_separation=0.05;
contact_max_allowed_penetration= 0.01;
constraint_bias = 0.01;
body_linear_velocity_sleep_treshold=0.01;
body_angular_velocity_sleep_treshold=(8.0 / 180.0 * Math_PI);
body_time_to_sleep=0.5;
body_angular_velocity_damp_ratio=15;
broadphase = BroadPhase2DSW::create_func();
broadphase->set_pair_callback(_broadphase_pair,this);
broadphase->set_unpair_callback(_broadphase_unpair,this);
area=NULL;
direct_access = memnew( Physics2DDirectSpaceStateSW );
direct_access->space=this;
}
Space2DSW::~Space2DSW() {
memdelete(broadphase);
memdelete( direct_access );
}