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Merge pull request #1932 from Faless/gravity_distance_full

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Calculate gravity based on distance from body to gravity point
This commit is contained in:
Juan Linietsky
2015-06-07 00:25:37 -03:00
parent b524b40fdc 590afbcac4
commit 5064cc5006
14 changed files with 70 additions and 6 deletions
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3
servers/physics/area_sw.cpp
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@ -98,6 +98,7 @@ void AreaSW::set_param(PhysicsServer::AreaParameter p_param, const Variant& p_va
case PhysicsServer::AREA_PARAM_GRAVITY: gravity=p_value; ; break;
case PhysicsServer::AREA_PARAM_GRAVITY_VECTOR: gravity_vector=p_value; ; break;
case PhysicsServer::AREA_PARAM_GRAVITY_IS_POINT: gravity_is_point=p_value; ; break;
case PhysicsServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE: gravity_distance_scale=p_value; ; break;
case PhysicsServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION: point_attenuation=p_value; ; break;
case PhysicsServer::AREA_PARAM_DENSITY: density=p_value; ; break;
case PhysicsServer::AREA_PARAM_PRIORITY: priority=p_value; ; break;
@ -113,6 +114,7 @@ Variant AreaSW::get_param(PhysicsServer::AreaParameter p_param) const {
case PhysicsServer::AREA_PARAM_GRAVITY: return gravity;
case PhysicsServer::AREA_PARAM_GRAVITY_VECTOR: return gravity_vector;
case PhysicsServer::AREA_PARAM_GRAVITY_IS_POINT: return gravity_is_point;
case PhysicsServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE: return gravity_distance_scale;
case PhysicsServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION: return point_attenuation;
case PhysicsServer::AREA_PARAM_DENSITY: return density;
case PhysicsServer::AREA_PARAM_PRIORITY: return priority;
@ -177,6 +179,7 @@ AreaSW::AreaSW() : CollisionObjectSW(TYPE_AREA), monitor_query_list(this), move
gravity=9.80665;
gravity_vector=Vector3(0,-1,0);
gravity_is_point=false;
gravity_distance_scale=0;
point_attenuation=1;
density=0.1;
priority=0;

4
servers/physics/area_sw.h
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@ -45,6 +45,7 @@ class AreaSW : public CollisionObjectSW{
float gravity;
Vector3 gravity_vector;
bool gravity_is_point;
float gravity_distance_scale;
float point_attenuation;
float density;
int priority;
@ -125,6 +126,9 @@ public:
_FORCE_INLINE_ void set_gravity_as_point(bool p_enable) { gravity_is_point=p_enable; }
_FORCE_INLINE_ bool is_gravity_point() const { return gravity_is_point; }
_FORCE_INLINE_ void set_gravity_distance_scale(float scale) { gravity_distance_scale=scale; }
_FORCE_INLINE_ float get_gravity_distance_scale() const { return gravity_distance_scale; }
_FORCE_INLINE_ void set_point_attenuation(float p_point_attenuation) { point_attenuation=p_point_attenuation; }
_FORCE_INLINE_ float get_point_attenuation() const { return point_attenuation; }

9
servers/physics/body_sw.cpp
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@ -362,9 +362,12 @@ void BodySW::set_space(SpaceSW *p_space){
void BodySW::_compute_area_gravity(const AreaSW *p_area) {
if (p_area->is_gravity_point()) {
gravity += (p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin()).normalized() * p_area->get_gravity();
if(p_area->get_gravity_distance_scale() > 0) {
Vector3 v = p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin();
gravity += v.normalized() * (p_area->get_gravity() / Math::pow(v.length() * p_area->get_gravity_distance_scale()+1, 2) );
} else {
gravity += (p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin()).normalized() * p_area->get_gravity();
}
} else {
gravity += p_area->get_gravity_vector() * p_area->get_gravity();
}

3
servers/physics_2d/area_2d_sw.cpp
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@ -120,6 +120,7 @@ void Area2DSW::set_param(Physics2DServer::AreaParameter p_param, const Variant&
case Physics2DServer::AREA_PARAM_GRAVITY: gravity=p_value; ; break;
case Physics2DServer::AREA_PARAM_GRAVITY_VECTOR: gravity_vector=p_value; ; break;
case Physics2DServer::AREA_PARAM_GRAVITY_IS_POINT: gravity_is_point=p_value; ; break;
case Physics2DServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE: gravity_distance_scale=p_value; ; break;
case Physics2DServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION: point_attenuation=p_value; ; break;
case Physics2DServer::AREA_PARAM_LINEAR_DAMP: linear_damp=p_value; ; break;
case Physics2DServer::AREA_PARAM_ANGULAR_DAMP: angular_damp=p_value; ; break;
@ -136,6 +137,7 @@ Variant Area2DSW::get_param(Physics2DServer::AreaParameter p_param) const {
case Physics2DServer::AREA_PARAM_GRAVITY: return gravity;
case Physics2DServer::AREA_PARAM_GRAVITY_VECTOR: return gravity_vector;
case Physics2DServer::AREA_PARAM_GRAVITY_IS_POINT: return gravity_is_point;
case Physics2DServer::AREA_PARAM_GRAVITY_DISTANCE_SCALE: return gravity_distance_scale;
case Physics2DServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION: return point_attenuation;
case Physics2DServer::AREA_PARAM_LINEAR_DAMP: return linear_damp;
case Physics2DServer::AREA_PARAM_ANGULAR_DAMP: return angular_damp;
@ -248,6 +250,7 @@ Area2DSW::Area2DSW() : CollisionObject2DSW(TYPE_AREA), monitor_query_list(this),
gravity=9.80665;
gravity_vector=Vector2(0,-1);
gravity_is_point=false;
gravity_distance_scale=0;
point_attenuation=1;
angular_damp=1.0;

4
servers/physics_2d/area_2d_sw.h
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@ -46,6 +46,7 @@ class Area2DSW : public CollisionObject2DSW{
float gravity;
Vector2 gravity_vector;
bool gravity_is_point;
float gravity_distance_scale;
float point_attenuation;
float linear_damp;
float angular_damp;
@ -139,6 +140,9 @@ public:
_FORCE_INLINE_ void set_gravity_as_point(bool p_enable) { gravity_is_point=p_enable; }
_FORCE_INLINE_ bool is_gravity_point() const { return gravity_is_point; }
_FORCE_INLINE_ void set_gravity_distance_scale(float scale) { gravity_distance_scale=scale; }
_FORCE_INLINE_ float get_gravity_distance_scale() const { return gravity_distance_scale; }
_FORCE_INLINE_ void set_point_attenuation(float p_point_attenuation) { point_attenuation=p_point_attenuation; }
_FORCE_INLINE_ float get_point_attenuation() const { return point_attenuation; }

9
servers/physics_2d/body_2d_sw.cpp
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@ -383,9 +383,12 @@ void Body2DSW::set_space(Space2DSW *p_space){
void Body2DSW::_compute_area_gravity(const Area2DSW *p_area) {
if (p_area->is_gravity_point()) {
gravity += (p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin()).normalized() * p_area->get_gravity();
if(p_area->get_gravity_distance_scale() > 0) {
Vector2 v = p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin();
gravity += v.normalized() * (p_area->get_gravity() / Math::pow(v.length() * p_area->get_gravity_distance_scale()+1, 2) );
} else {
gravity += (p_area->get_transform().xform(p_area->get_gravity_vector()) - get_transform().get_origin()).normalized() * p_area->get_gravity();
}
} else {
gravity += p_area->get_gravity_vector() * p_area->get_gravity();
}

1
servers/physics_2d_server.cpp
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@ -657,6 +657,7 @@ void Physics2DServer::_bind_methods() {
BIND_CONSTANT( AREA_PARAM_GRAVITY );
BIND_CONSTANT( AREA_PARAM_GRAVITY_VECTOR );
BIND_CONSTANT( AREA_PARAM_GRAVITY_IS_POINT );
BIND_CONSTANT( AREA_PARAM_GRAVITY_DISTANCE_SCALE );
BIND_CONSTANT( AREA_PARAM_GRAVITY_POINT_ATTENUATION );
BIND_CONSTANT( AREA_PARAM_LINEAR_DAMP);
BIND_CONSTANT( AREA_PARAM_ANGULAR_DAMP);

1
servers/physics_2d_server.h
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@ -306,6 +306,7 @@ public:
AREA_PARAM_GRAVITY,
AREA_PARAM_GRAVITY_VECTOR,
AREA_PARAM_GRAVITY_IS_POINT,
AREA_PARAM_GRAVITY_DISTANCE_SCALE,
AREA_PARAM_GRAVITY_POINT_ATTENUATION,
AREA_PARAM_LINEAR_DAMP,
AREA_PARAM_ANGULAR_DAMP,

1
servers/physics_server.cpp
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@ -681,6 +681,7 @@ void PhysicsServer::_bind_methods() {
BIND_CONSTANT( AREA_PARAM_GRAVITY );
BIND_CONSTANT( AREA_PARAM_GRAVITY_VECTOR );
BIND_CONSTANT( AREA_PARAM_GRAVITY_IS_POINT );
BIND_CONSTANT( AREA_PARAM_GRAVITY_DISTANCE_SCALE );
BIND_CONSTANT( AREA_PARAM_GRAVITY_POINT_ATTENUATION );
BIND_CONSTANT( AREA_PARAM_DENSITY );
BIND_CONSTANT( AREA_PARAM_PRIORITY );

1
servers/physics_server.h
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@ -298,6 +298,7 @@ public:
AREA_PARAM_GRAVITY,
AREA_PARAM_GRAVITY_VECTOR,
AREA_PARAM_GRAVITY_IS_POINT,
AREA_PARAM_GRAVITY_DISTANCE_SCALE,
AREA_PARAM_GRAVITY_POINT_ATTENUATION,
AREA_PARAM_DENSITY,
AREA_PARAM_PRIORITY