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godot/scene/2d/physics_body_2d.cpp

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/*************************************************************************/
/* physics_body_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* 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 "physics_body_2d.h"
#include "core/config/engine.h"
#include "core/core_string_names.h"
#include "core/math/math_funcs.h"
#include "core/object/class_db.h"
#include "core/templates/list.h"
#include "core/templates/rid.h"
#include "scene/scene_string_names.h"
void PhysicsBody2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("move_and_collide", "rel_vec", "infinite_inertia", "exclude_raycast_shapes", "test_only", "safe_margin"), &PhysicsBody2D::_move, DEFVAL(true), DEFVAL(true), DEFVAL(false), DEFVAL(0.08));
ClassDB::bind_method(D_METHOD("test_move", "from", "rel_vec", "infinite_inertia", "exclude_raycast_shapes", "collision", "safe_margin"), &PhysicsBody2D::test_move, DEFVAL(true), DEFVAL(true), DEFVAL(Variant()), DEFVAL(0.08));
ClassDB::bind_method(D_METHOD("get_collision_exceptions"), &PhysicsBody2D::get_collision_exceptions);
ClassDB::bind_method(D_METHOD("add_collision_exception_with", "body"), &PhysicsBody2D::add_collision_exception_with);
ClassDB::bind_method(D_METHOD("remove_collision_exception_with", "body"), &PhysicsBody2D::remove_collision_exception_with);
}
PhysicsBody2D::PhysicsBody2D(PhysicsServer2D::BodyMode p_mode) :
CollisionObject2D(PhysicsServer2D::get_singleton()->body_create(), false) {
set_body_mode(p_mode);
set_pickable(false);
}
PhysicsBody2D::~PhysicsBody2D() {
if (motion_cache.is_valid()) {
motion_cache->owner = nullptr;
}
}
Ref<KinematicCollision2D> PhysicsBody2D::_move(const Vector2 &p_motion, bool p_infinite_inertia, bool p_exclude_raycast_shapes, bool p_test_only, real_t p_margin) {
PhysicsServer2D::MotionResult result;
if (move_and_collide(p_motion, p_infinite_inertia, result, p_margin, p_exclude_raycast_shapes, p_test_only)) {
if (motion_cache.is_null()) {
motion_cache.instantiate();
motion_cache->owner = this;
}
motion_cache->result = result;
return motion_cache;
}
return Ref<KinematicCollision2D>();
}
bool PhysicsBody2D::move_and_collide(const Vector2 &p_motion, bool p_infinite_inertia, PhysicsServer2D::MotionResult &r_result, real_t p_margin, bool p_exclude_raycast_shapes, bool p_test_only, bool p_cancel_sliding, const Set<RID> &p_exclude) {
if (is_only_update_transform_changes_enabled()) {
ERR_PRINT("Move functions do not work together with 'sync to physics' option. Please read the documentation.");
}
Transform2D gt = get_global_transform();
bool colliding = PhysicsServer2D::get_singleton()->body_test_motion(get_rid(), gt, p_motion, p_infinite_inertia, p_margin, &r_result, p_exclude_raycast_shapes, p_exclude);
// Restore direction of motion to be along original motion,
// in order to avoid sliding due to recovery,
// but only if collision depth is low enough to avoid tunneling.
if (p_cancel_sliding) {
real_t motion_length = p_motion.length();
real_t precision = 0.001;
if (colliding) {
// Can't just use margin as a threshold because collision depth is calculated on unsafe motion,
// so even in normal resting cases the depth can be a bit more than the margin.
precision += motion_length * (r_result.collision_unsafe_fraction - r_result.collision_safe_fraction);
if (r_result.collision_depth > (real_t)p_margin + precision) {
p_cancel_sliding = false;
}
}
if (p_cancel_sliding) {
// When motion is null, recovery is the resulting motion.
Vector2 motion_normal;
if (motion_length > CMP_EPSILON) {
motion_normal = p_motion / motion_length;
}
// Check depth of recovery.
real_t projected_length = r_result.motion.dot(motion_normal);
Vector2 recovery = r_result.motion - motion_normal * projected_length;
real_t recovery_length = recovery.length();
// Fixes cases where canceling slide causes the motion to go too deep into the ground,
// because we're only taking rest information into account and not general recovery.
if (recovery_length < (real_t)p_margin + precision) {
// Apply adjustment to motion.
r_result.motion = motion_normal * projected_length;
r_result.remainder = p_motion - r_result.motion;
}
}
}
if (!p_test_only) {
gt.elements[2] += r_result.motion;
set_global_transform(gt);
}
return colliding;
}
bool PhysicsBody2D::test_move(const Transform2D &p_from, const Vector2 &p_motion, bool p_infinite_inertia, bool p_exclude_raycast_shapes, const Ref<KinematicCollision2D> &r_collision, real_t p_margin) {
ERR_FAIL_COND_V(!is_inside_tree(), false);
PhysicsServer2D::MotionResult *r = nullptr;
if (r_collision.is_valid()) {
// Needs const_cast because method bindings don't support non-const Ref.
r = const_cast<PhysicsServer2D::MotionResult *>(&r_collision->result);
}
return PhysicsServer2D::get_singleton()->body_test_motion(get_rid(), p_from, p_motion, p_infinite_inertia, p_margin, r, p_exclude_raycast_shapes);
}
TypedArray<PhysicsBody2D> PhysicsBody2D::get_collision_exceptions() {
List<RID> exceptions;
PhysicsServer2D::get_singleton()->body_get_collision_exceptions(get_rid(), &exceptions);
Array ret;
for (const RID &body : exceptions) {
ObjectID instance_id = PhysicsServer2D::get_singleton()->body_get_object_instance_id(body);
Object *obj = ObjectDB::get_instance(instance_id);
PhysicsBody2D *physics_body = Object::cast_to<PhysicsBody2D>(obj);
ret.append(physics_body);
}
return ret;
}
void PhysicsBody2D::add_collision_exception_with(Node *p_node) {
ERR_FAIL_NULL(p_node);
PhysicsBody2D *physics_body = Object::cast_to<PhysicsBody2D>(p_node);
ERR_FAIL_COND_MSG(!physics_body, "Collision exception only works between two objects of PhysicsBody2D type.");
PhysicsServer2D::get_singleton()->body_add_collision_exception(get_rid(), physics_body->get_rid());
}
void PhysicsBody2D::remove_collision_exception_with(Node *p_node) {
ERR_FAIL_NULL(p_node);
PhysicsBody2D *physics_body = Object::cast_to<PhysicsBody2D>(p_node);
ERR_FAIL_COND_MSG(!physics_body, "Collision exception only works between two objects of PhysicsBody2D type.");
PhysicsServer2D::get_singleton()->body_remove_collision_exception(get_rid(), physics_body->get_rid());
}
void StaticBody2D::set_constant_linear_velocity(const Vector2 &p_vel) {
constant_linear_velocity = p_vel;
if (kinematic_motion) {
_update_kinematic_motion();
} else {
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_LINEAR_VELOCITY, constant_linear_velocity);
}
}
void StaticBody2D::set_constant_angular_velocity(real_t p_vel) {
constant_angular_velocity = p_vel;
if (kinematic_motion) {
_update_kinematic_motion();
} else {
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_ANGULAR_VELOCITY, constant_angular_velocity);
}
}
Vector2 StaticBody2D::get_constant_linear_velocity() const {
return constant_linear_velocity;
}
real_t StaticBody2D::get_constant_angular_velocity() const {
return constant_angular_velocity;
}
void StaticBody2D::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
if (physics_material_override.is_valid()) {
if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, callable_mp(this, &StaticBody2D::_reload_physics_characteristics))) {
physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &StaticBody2D::_reload_physics_characteristics));
}
}
physics_material_override = p_physics_material_override;
if (physics_material_override.is_valid()) {
physics_material_override->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &StaticBody2D::_reload_physics_characteristics));
}
_reload_physics_characteristics();
}
Ref<PhysicsMaterial> StaticBody2D::get_physics_material_override() const {
return physics_material_override;
}
void StaticBody2D::set_kinematic_motion_enabled(bool p_enabled) {
if (p_enabled == kinematic_motion) {
return;
}
kinematic_motion = p_enabled;
if (kinematic_motion) {
set_body_mode(PhysicsServer2D::BODY_MODE_KINEMATIC);
} else {
set_body_mode(PhysicsServer2D::BODY_MODE_STATIC);
}
#ifdef TOOLS_ENABLED
if (Engine::get_singleton()->is_editor_hint()) {
update_configuration_warnings();
return;
}
#endif
_update_kinematic_motion();
}
bool StaticBody2D::is_kinematic_motion_enabled() const {
return kinematic_motion;
}
void StaticBody2D::set_sync_to_physics(bool p_enable) {
if (sync_to_physics == p_enable) {
return;
}
sync_to_physics = p_enable;
#ifdef TOOLS_ENABLED
if (Engine::get_singleton()->is_editor_hint()) {
update_configuration_warnings();
return;
}
#endif
if (kinematic_motion) {
_update_kinematic_motion();
}
}
bool StaticBody2D::is_sync_to_physics_enabled() const {
return sync_to_physics;
}
void StaticBody2D::_direct_state_changed(Object *p_state) {
if (!sync_to_physics) {
return;
}
PhysicsDirectBodyState2D *state = Object::cast_to<PhysicsDirectBodyState2D>(p_state);
ERR_FAIL_NULL_MSG(state, "Method '_direct_state_changed' must receive a valid PhysicsDirectBodyState2D object as argument");
last_valid_transform = state->get_transform();
set_notify_local_transform(false);
set_global_transform(last_valid_transform);
set_notify_local_transform(true);
}
TypedArray<String> StaticBody2D::get_configuration_warnings() const {
TypedArray<String> warnings = PhysicsBody2D::get_configuration_warnings();
if (sync_to_physics && !kinematic_motion) {
warnings.push_back(TTR("Sync to physics works only when kinematic motion is enabled."));
}
return warnings;
}
void StaticBody2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
last_valid_transform = get_global_transform();
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
// Used by sync to physics, send the new transform to the physics...
Transform2D new_transform = get_global_transform();
real_t delta_time = get_physics_process_delta_time();
new_transform.translate(constant_linear_velocity * delta_time);
new_transform.set_rotation(new_transform.get_rotation() + constant_angular_velocity * delta_time);
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_TRANSFORM, new_transform);
// ... but then revert changes.
set_notify_local_transform(false);
set_global_transform(last_valid_transform);
set_notify_local_transform(true);
} break;
case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: {
#ifdef TOOLS_ENABLED
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
#endif
ERR_FAIL_COND(!kinematic_motion);
Transform2D new_transform = get_global_transform();
real_t delta_time = get_physics_process_delta_time();
new_transform.translate(constant_linear_velocity * delta_time);
new_transform.set_rotation(new_transform.get_rotation() + constant_angular_velocity * delta_time);
if (sync_to_physics) {
// Propagate transform change to node.
set_global_transform(new_transform);
} else {
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_TRANSFORM, new_transform);
// Propagate transform change to node.
set_block_transform_notify(true);
set_global_transform(new_transform);
set_block_transform_notify(false);
}
} break;
}
}
void StaticBody2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_constant_linear_velocity", "vel"), &StaticBody2D::set_constant_linear_velocity);
ClassDB::bind_method(D_METHOD("set_constant_angular_velocity", "vel"), &StaticBody2D::set_constant_angular_velocity);
ClassDB::bind_method(D_METHOD("get_constant_linear_velocity"), &StaticBody2D::get_constant_linear_velocity);
ClassDB::bind_method(D_METHOD("get_constant_angular_velocity"), &StaticBody2D::get_constant_angular_velocity);
ClassDB::bind_method(D_METHOD("set_kinematic_motion_enabled", "enabled"), &StaticBody2D::set_kinematic_motion_enabled);
ClassDB::bind_method(D_METHOD("is_kinematic_motion_enabled"), &StaticBody2D::is_kinematic_motion_enabled);
ClassDB::bind_method(D_METHOD("set_physics_material_override", "physics_material_override"), &StaticBody2D::set_physics_material_override);
ClassDB::bind_method(D_METHOD("get_physics_material_override"), &StaticBody2D::get_physics_material_override);
ClassDB::bind_method(D_METHOD("set_sync_to_physics", "enable"), &StaticBody2D::set_sync_to_physics);
ClassDB::bind_method(D_METHOD("is_sync_to_physics_enabled"), &StaticBody2D::is_sync_to_physics_enabled);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "physics_material_override", PROPERTY_HINT_RESOURCE_TYPE, "PhysicsMaterial"), "set_physics_material_override", "get_physics_material_override");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "constant_linear_velocity"), "set_constant_linear_velocity", "get_constant_linear_velocity");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "constant_angular_velocity"), "set_constant_angular_velocity", "get_constant_angular_velocity");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "kinematic_motion"), "set_kinematic_motion_enabled", "is_kinematic_motion_enabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "sync_to_physics"), "set_sync_to_physics", "is_sync_to_physics_enabled");
}
StaticBody2D::StaticBody2D() :
PhysicsBody2D(PhysicsServer2D::BODY_MODE_STATIC) {
}
void StaticBody2D::_reload_physics_characteristics() {
if (physics_material_override.is_null()) {
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_BOUNCE, 0);
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_FRICTION, 1);
} else {
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
}
}
void StaticBody2D::_update_kinematic_motion() {
#ifdef TOOLS_ENABLED
if (Engine::get_singleton()->is_editor_hint()) {
return;
}
#endif
if (kinematic_motion && sync_to_physics) {
PhysicsServer2D::get_singleton()->body_set_force_integration_callback(get_rid(), callable_mp(this, &StaticBody2D::_direct_state_changed));
set_only_update_transform_changes(true);
set_notify_local_transform(true);
} else {
PhysicsServer2D::get_singleton()->body_set_force_integration_callback(get_rid(), Callable());
set_only_update_transform_changes(false);
set_notify_local_transform(false);
}
bool needs_physics_process = false;
if (kinematic_motion) {
if (!Math::is_zero_approx(constant_angular_velocity) || !constant_linear_velocity.is_equal_approx(Vector2())) {
needs_physics_process = true;
}
}
set_physics_process_internal(needs_physics_process);
}
void RigidBody2D::_body_enter_tree(ObjectID p_id) {
Object *obj = ObjectDB::get_instance(p_id);
Node *node = Object::cast_to<Node>(obj);
ERR_FAIL_COND(!node);
ERR_FAIL_COND(!contact_monitor);
Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.find(p_id);
ERR_FAIL_COND(!E);
ERR_FAIL_COND(E->get().in_scene);
contact_monitor->locked = true;
E->get().in_scene = true;
emit_signal(SceneStringNames::get_singleton()->body_entered, node);
for (int i = 0; i < E->get().shapes.size(); i++) {
emit_signal(SceneStringNames::get_singleton()->body_shape_entered, E->get().rid, node, E->get().shapes[i].body_shape, E->get().shapes[i].local_shape);
}
contact_monitor->locked = false;
}
void RigidBody2D::_body_exit_tree(ObjectID p_id) {
Object *obj = ObjectDB::get_instance(p_id);
Node *node = Object::cast_to<Node>(obj);
ERR_FAIL_COND(!node);
ERR_FAIL_COND(!contact_monitor);
Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.find(p_id);
ERR_FAIL_COND(!E);
ERR_FAIL_COND(!E->get().in_scene);
E->get().in_scene = false;
contact_monitor->locked = true;
emit_signal(SceneStringNames::get_singleton()->body_exited, node);
for (int i = 0; i < E->get().shapes.size(); i++) {
emit_signal(SceneStringNames::get_singleton()->body_shape_exited, E->get().rid, node, E->get().shapes[i].body_shape, E->get().shapes[i].local_shape);
}
contact_monitor->locked = false;
}
void RigidBody2D::_body_inout(int p_status, const RID &p_body, ObjectID p_instance, int p_body_shape, int p_local_shape) {
bool body_in = p_status == 1;
ObjectID objid = p_instance;
Object *obj = ObjectDB::get_instance(objid);
Node *node = Object::cast_to<Node>(obj);
ERR_FAIL_COND(!contact_monitor);
Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.find(objid);
ERR_FAIL_COND(!body_in && !E);
if (body_in) {
if (!E) {
E = contact_monitor->body_map.insert(objid, BodyState());
E->get().rid = p_body;
//E->get().rc=0;
E->get().in_scene = node && node->is_inside_tree();
if (node) {
node->connect(SceneStringNames::get_singleton()->tree_entered, callable_mp(this, &RigidBody2D::_body_enter_tree), make_binds(objid));
node->connect(SceneStringNames::get_singleton()->tree_exiting, callable_mp(this, &RigidBody2D::_body_exit_tree), make_binds(objid));
if (E->get().in_scene) {
emit_signal(SceneStringNames::get_singleton()->body_entered, node);
}
}
//E->get().rc++;
}
if (node) {
E->get().shapes.insert(ShapePair(p_body_shape, p_local_shape));
}
if (E->get().in_scene) {
emit_signal(SceneStringNames::get_singleton()->body_shape_entered, p_body, node, p_body_shape, p_local_shape);
}
} else {
//E->get().rc--;
if (node) {
E->get().shapes.erase(ShapePair(p_body_shape, p_local_shape));
}
bool in_scene = E->get().in_scene;
if (E->get().shapes.is_empty()) {
if (node) {
node->disconnect(SceneStringNames::get_singleton()->tree_entered, callable_mp(this, &RigidBody2D::_body_enter_tree));
node->disconnect(SceneStringNames::get_singleton()->tree_exiting, callable_mp(this, &RigidBody2D::_body_exit_tree));
if (in_scene) {
emit_signal(SceneStringNames::get_singleton()->body_exited, node);
}
}
contact_monitor->body_map.erase(E);
}
if (node && in_scene) {
emit_signal(SceneStringNames::get_singleton()->body_shape_exited, p_body, node, p_body_shape, p_local_shape);
}
}
}
struct _RigidBody2DInOut {
RID rid;
ObjectID id;
int shape = 0;
int local_shape = 0;
};
void RigidBody2D::_direct_state_changed(Object *p_state) {
#ifdef DEBUG_ENABLED
state = Object::cast_to<PhysicsDirectBodyState2D>(p_state);
ERR_FAIL_NULL_MSG(state, "Method '_direct_state_changed' must receive a valid PhysicsDirectBodyState2D object as argument");
#else
state = (PhysicsDirectBodyState2D *)p_state; //trust it
#endif
set_block_transform_notify(true); // don't want notify (would feedback loop)
if (mode != MODE_KINEMATIC) {
set_global_transform(state->get_transform());
}
linear_velocity = state->get_linear_velocity();
angular_velocity = state->get_angular_velocity();
if (sleeping != state->is_sleeping()) {
sleeping = state->is_sleeping();
emit_signal(SceneStringNames::get_singleton()->sleeping_state_changed);
}
if (get_script_instance()) {
get_script_instance()->call("_integrate_forces", state);
}
set_block_transform_notify(false); // want it back
if (contact_monitor) {
contact_monitor->locked = true;
//untag all
int rc = 0;
for (Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.front(); E; E = E->next()) {
for (int i = 0; i < E->get().shapes.size(); i++) {
E->get().shapes[i].tagged = false;
rc++;
}
}
_RigidBody2DInOut *toadd = (_RigidBody2DInOut *)alloca(state->get_contact_count() * sizeof(_RigidBody2DInOut));
int toadd_count = 0; //state->get_contact_count();
RigidBody2D_RemoveAction *toremove = (RigidBody2D_RemoveAction *)alloca(rc * sizeof(RigidBody2D_RemoveAction));
int toremove_count = 0;
//put the ones to add
for (int i = 0; i < state->get_contact_count(); i++) {
RID rid = state->get_contact_collider(i);
ObjectID obj = state->get_contact_collider_id(i);
int local_shape = state->get_contact_local_shape(i);
int shape = state->get_contact_collider_shape(i);
//bool found=false;
Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.find(obj);
if (!E) {
toadd[toadd_count].rid = rid;
toadd[toadd_count].local_shape = local_shape;
toadd[toadd_count].id = obj;
toadd[toadd_count].shape = shape;
toadd_count++;
continue;
}
ShapePair sp(shape, local_shape);
int idx = E->get().shapes.find(sp);
if (idx == -1) {
toadd[toadd_count].rid = rid;
toadd[toadd_count].local_shape = local_shape;
toadd[toadd_count].id = obj;
toadd[toadd_count].shape = shape;
toadd_count++;
continue;
}
E->get().shapes[idx].tagged = true;
}
//put the ones to remove
for (Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.front(); E; E = E->next()) {
for (int i = 0; i < E->get().shapes.size(); i++) {
if (!E->get().shapes[i].tagged) {
toremove[toremove_count].rid = E->get().rid;
toremove[toremove_count].body_id = E->key();
toremove[toremove_count].pair = E->get().shapes[i];
toremove_count++;
}
}
}
//process removals
for (int i = 0; i < toremove_count; i++) {
_body_inout(0, toremove[i].rid, toremove[i].body_id, toremove[i].pair.body_shape, toremove[i].pair.local_shape);
}
//process additions
for (int i = 0; i < toadd_count; i++) {
_body_inout(1, toadd[i].rid, toadd[i].id, toadd[i].shape, toadd[i].local_shape);
}
contact_monitor->locked = false;
}
state = nullptr;
}
void RigidBody2D::set_mode(Mode p_mode) {
mode = p_mode;
switch (p_mode) {
case MODE_DYNAMIC: {
set_body_mode(PhysicsServer2D::BODY_MODE_DYNAMIC);
} break;
case MODE_STATIC: {
set_body_mode(PhysicsServer2D::BODY_MODE_STATIC);
} break;
case MODE_KINEMATIC: {
set_body_mode(PhysicsServer2D::BODY_MODE_KINEMATIC);
} break;
case MODE_DYNAMIC_LOCKED: {
set_body_mode(PhysicsServer2D::BODY_MODE_DYNAMIC_LOCKED);
} break;
}
}
RigidBody2D::Mode RigidBody2D::get_mode() const {
return mode;
}
void RigidBody2D::set_mass(real_t p_mass) {
ERR_FAIL_COND(p_mass <= 0);
mass = p_mass;
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_MASS, mass);
}
real_t RigidBody2D::get_mass() const {
return mass;
}
void RigidBody2D::set_inertia(real_t p_inertia) {
ERR_FAIL_COND(p_inertia < 0);
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_INERTIA, p_inertia);
}
real_t RigidBody2D::get_inertia() const {
return PhysicsServer2D::get_singleton()->body_get_param(get_rid(), PhysicsServer2D::BODY_PARAM_INERTIA);
}
void RigidBody2D::set_physics_material_override(const Ref<PhysicsMaterial> &p_physics_material_override) {
if (physics_material_override.is_valid()) {
if (physics_material_override->is_connected(CoreStringNames::get_singleton()->changed, callable_mp(this, &RigidBody2D::_reload_physics_characteristics))) {
physics_material_override->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &RigidBody2D::_reload_physics_characteristics));
}
}
physics_material_override = p_physics_material_override;
if (physics_material_override.is_valid()) {
physics_material_override->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &RigidBody2D::_reload_physics_characteristics));
}
_reload_physics_characteristics();
}
Ref<PhysicsMaterial> RigidBody2D::get_physics_material_override() const {
return physics_material_override;
}
void RigidBody2D::set_gravity_scale(real_t p_gravity_scale) {
gravity_scale = p_gravity_scale;
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_GRAVITY_SCALE, gravity_scale);
}
real_t RigidBody2D::get_gravity_scale() const {
return gravity_scale;
}
void RigidBody2D::set_linear_damp(real_t p_linear_damp) {
ERR_FAIL_COND(p_linear_damp < -1);
linear_damp = p_linear_damp;
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_LINEAR_DAMP, linear_damp);
}
real_t RigidBody2D::get_linear_damp() const {
return linear_damp;
}
void RigidBody2D::set_angular_damp(real_t p_angular_damp) {
ERR_FAIL_COND(p_angular_damp < -1);
angular_damp = p_angular_damp;
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_ANGULAR_DAMP, angular_damp);
}
real_t RigidBody2D::get_angular_damp() const {
return angular_damp;
}
void RigidBody2D::set_axis_velocity(const Vector2 &p_axis) {
Vector2 v = state ? state->get_linear_velocity() : linear_velocity;
Vector2 axis = p_axis.normalized();
v -= axis * axis.dot(v);
v += p_axis;
if (state) {
set_linear_velocity(v);
} else {
PhysicsServer2D::get_singleton()->body_set_axis_velocity(get_rid(), p_axis);
linear_velocity = v;
}
}
void RigidBody2D::set_linear_velocity(const Vector2 &p_velocity) {
linear_velocity = p_velocity;
if (state) {
state->set_linear_velocity(linear_velocity);
} else {
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_LINEAR_VELOCITY, linear_velocity);
}
}
Vector2 RigidBody2D::get_linear_velocity() const {
return linear_velocity;
}
void RigidBody2D::set_angular_velocity(real_t p_velocity) {
angular_velocity = p_velocity;
if (state) {
state->set_angular_velocity(angular_velocity);
} else {
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_ANGULAR_VELOCITY, angular_velocity);
}
}
real_t RigidBody2D::get_angular_velocity() const {
return angular_velocity;
}
void RigidBody2D::set_use_custom_integrator(bool p_enable) {
if (custom_integrator == p_enable) {
return;
}
custom_integrator = p_enable;
PhysicsServer2D::get_singleton()->body_set_omit_force_integration(get_rid(), p_enable);
}
bool RigidBody2D::is_using_custom_integrator() {
return custom_integrator;
}
void RigidBody2D::set_sleeping(bool p_sleeping) {
sleeping = p_sleeping;
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_SLEEPING, sleeping);
}
void RigidBody2D::set_can_sleep(bool p_active) {
can_sleep = p_active;
PhysicsServer2D::get_singleton()->body_set_state(get_rid(), PhysicsServer2D::BODY_STATE_CAN_SLEEP, p_active);
}
bool RigidBody2D::is_able_to_sleep() const {
return can_sleep;
}
bool RigidBody2D::is_sleeping() const {
return sleeping;
}
void RigidBody2D::set_max_contacts_reported(int p_amount) {
max_contacts_reported = p_amount;
PhysicsServer2D::get_singleton()->body_set_max_contacts_reported(get_rid(), p_amount);
}
int RigidBody2D::get_max_contacts_reported() const {
return max_contacts_reported;
}
void RigidBody2D::apply_central_impulse(const Vector2 &p_impulse) {
PhysicsServer2D::get_singleton()->body_apply_central_impulse(get_rid(), p_impulse);
}
void RigidBody2D::apply_impulse(const Vector2 &p_impulse, const Vector2 &p_position) {
PhysicsServer2D::get_singleton()->body_apply_impulse(get_rid(), p_impulse, p_position);
}
void RigidBody2D::apply_torque_impulse(real_t p_torque) {
PhysicsServer2D::get_singleton()->body_apply_torque_impulse(get_rid(), p_torque);
}
void RigidBody2D::set_applied_force(const Vector2 &p_force) {
PhysicsServer2D::get_singleton()->body_set_applied_force(get_rid(), p_force);
};
Vector2 RigidBody2D::get_applied_force() const {
return PhysicsServer2D::get_singleton()->body_get_applied_force(get_rid());
};
void RigidBody2D::set_applied_torque(const real_t p_torque) {
PhysicsServer2D::get_singleton()->body_set_applied_torque(get_rid(), p_torque);
};
real_t RigidBody2D::get_applied_torque() const {
return PhysicsServer2D::get_singleton()->body_get_applied_torque(get_rid());
};
void RigidBody2D::add_central_force(const Vector2 &p_force) {
PhysicsServer2D::get_singleton()->body_add_central_force(get_rid(), p_force);
}
void RigidBody2D::add_force(const Vector2 &p_force, const Vector2 &p_position) {
PhysicsServer2D::get_singleton()->body_add_force(get_rid(), p_force, p_position);
}
void RigidBody2D::add_torque(const real_t p_torque) {
PhysicsServer2D::get_singleton()->body_add_torque(get_rid(), p_torque);
}
void RigidBody2D::set_continuous_collision_detection_mode(CCDMode p_mode) {
ccd_mode = p_mode;
PhysicsServer2D::get_singleton()->body_set_continuous_collision_detection_mode(get_rid(), PhysicsServer2D::CCDMode(p_mode));
}
RigidBody2D::CCDMode RigidBody2D::get_continuous_collision_detection_mode() const {
return ccd_mode;
}
TypedArray<Node2D> RigidBody2D::get_colliding_bodies() const {
ERR_FAIL_COND_V(!contact_monitor, Array());
TypedArray<Node2D> ret;
ret.resize(contact_monitor->body_map.size());
int idx = 0;
for (const Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.front(); E; E = E->next()) {
Object *obj = ObjectDB::get_instance(E->key());
if (!obj) {
ret.resize(ret.size() - 1); //ops
} else {
ret[idx++] = obj;
}
}
return ret;
}
void RigidBody2D::set_contact_monitor(bool p_enabled) {
if (p_enabled == is_contact_monitor_enabled()) {
return;
}
if (!p_enabled) {
ERR_FAIL_COND_MSG(contact_monitor->locked, "Can't disable contact monitoring during in/out callback. Use call_deferred(\"set_contact_monitor\", false) instead.");
for (Map<ObjectID, BodyState>::Element *E = contact_monitor->body_map.front(); E; E = E->next()) {
//clean up mess
Object *obj = ObjectDB::get_instance(E->key());
Node *node = Object::cast_to<Node>(obj);
if (node) {
node->disconnect(SceneStringNames::get_singleton()->tree_entered, callable_mp(this, &RigidBody2D::_body_enter_tree));
node->disconnect(SceneStringNames::get_singleton()->tree_exiting, callable_mp(this, &RigidBody2D::_body_exit_tree));
}
}
memdelete(contact_monitor);
contact_monitor = nullptr;
} else {
contact_monitor = memnew(ContactMonitor);
contact_monitor->locked = false;
}
}
bool RigidBody2D::is_contact_monitor_enabled() const {
return contact_monitor != nullptr;
}
void RigidBody2D::_notification(int p_what) {
#ifdef TOOLS_ENABLED
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
if (Engine::get_singleton()->is_editor_hint()) {
set_notify_local_transform(true); //used for warnings and only in editor
}
} break;
case NOTIFICATION_LOCAL_TRANSFORM_CHANGED: {
if (Engine::get_singleton()->is_editor_hint()) {
update_configuration_warnings();
}
} break;
}
#endif
}
TypedArray<String> RigidBody2D::get_configuration_warnings() const {
Transform2D t = get_transform();
TypedArray<String> warnings = CollisionObject2D::get_configuration_warnings();
if ((get_mode() == MODE_DYNAMIC || get_mode() == MODE_DYNAMIC_LOCKED) && (ABS(t.elements[0].length() - 1.0) > 0.05 || ABS(t.elements[1].length() - 1.0) > 0.05)) {
warnings.push_back(TTR("Size changes to RigidBody2D (in dynamic modes) will be overridden by the physics engine when running.\nChange the size in children collision shapes instead."));
}
return warnings;
}
void RigidBody2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_mode", "mode"), &RigidBody2D::set_mode);
ClassDB::bind_method(D_METHOD("get_mode"), &RigidBody2D::get_mode);
ClassDB::bind_method(D_METHOD("set_mass", "mass"), &RigidBody2D::set_mass);
ClassDB::bind_method(D_METHOD("get_mass"), &RigidBody2D::get_mass);
ClassDB::bind_method(D_METHOD("get_inertia"), &RigidBody2D::get_inertia);
ClassDB::bind_method(D_METHOD("set_inertia", "inertia"), &RigidBody2D::set_inertia);
ClassDB::bind_method(D_METHOD("set_physics_material_override", "physics_material_override"), &RigidBody2D::set_physics_material_override);
ClassDB::bind_method(D_METHOD("get_physics_material_override"), &RigidBody2D::get_physics_material_override);
ClassDB::bind_method(D_METHOD("set_gravity_scale", "gravity_scale"), &RigidBody2D::set_gravity_scale);
ClassDB::bind_method(D_METHOD("get_gravity_scale"), &RigidBody2D::get_gravity_scale);
ClassDB::bind_method(D_METHOD("set_linear_damp", "linear_damp"), &RigidBody2D::set_linear_damp);
ClassDB::bind_method(D_METHOD("get_linear_damp"), &RigidBody2D::get_linear_damp);
ClassDB::bind_method(D_METHOD("set_angular_damp", "angular_damp"), &RigidBody2D::set_angular_damp);
ClassDB::bind_method(D_METHOD("get_angular_damp"), &RigidBody2D::get_angular_damp);
ClassDB::bind_method(D_METHOD("set_linear_velocity", "linear_velocity"), &RigidBody2D::set_linear_velocity);
ClassDB::bind_method(D_METHOD("get_linear_velocity"), &RigidBody2D::get_linear_velocity);
ClassDB::bind_method(D_METHOD("set_angular_velocity", "angular_velocity"), &RigidBody2D::set_angular_velocity);
ClassDB::bind_method(D_METHOD("get_angular_velocity"), &RigidBody2D::get_angular_velocity);
ClassDB::bind_method(D_METHOD("set_max_contacts_reported", "amount"), &RigidBody2D::set_max_contacts_reported);
ClassDB::bind_method(D_METHOD("get_max_contacts_reported"), &RigidBody2D::get_max_contacts_reported);
ClassDB::bind_method(D_METHOD("set_use_custom_integrator", "enable"), &RigidBody2D::set_use_custom_integrator);
ClassDB::bind_method(D_METHOD("is_using_custom_integrator"), &RigidBody2D::is_using_custom_integrator);
ClassDB::bind_method(D_METHOD("set_contact_monitor", "enabled"), &RigidBody2D::set_contact_monitor);
ClassDB::bind_method(D_METHOD("is_contact_monitor_enabled"), &RigidBody2D::is_contact_monitor_enabled);
ClassDB::bind_method(D_METHOD("set_continuous_collision_detection_mode", "mode"), &RigidBody2D::set_continuous_collision_detection_mode);
ClassDB::bind_method(D_METHOD("get_continuous_collision_detection_mode"), &RigidBody2D::get_continuous_collision_detection_mode);
ClassDB::bind_method(D_METHOD("set_axis_velocity", "axis_velocity"), &RigidBody2D::set_axis_velocity);
ClassDB::bind_method(D_METHOD("apply_central_impulse", "impulse"), &RigidBody2D::apply_central_impulse, Vector2());
ClassDB::bind_method(D_METHOD("apply_impulse", "impulse", "position"), &RigidBody2D::apply_impulse, Vector2());
ClassDB::bind_method(D_METHOD("apply_torque_impulse", "torque"), &RigidBody2D::apply_torque_impulse);
ClassDB::bind_method(D_METHOD("set_applied_force", "force"), &RigidBody2D::set_applied_force);
ClassDB::bind_method(D_METHOD("get_applied_force"), &RigidBody2D::get_applied_force);
ClassDB::bind_method(D_METHOD("set_applied_torque", "torque"), &RigidBody2D::set_applied_torque);
ClassDB::bind_method(D_METHOD("get_applied_torque"), &RigidBody2D::get_applied_torque);
ClassDB::bind_method(D_METHOD("add_central_force", "force"), &RigidBody2D::add_central_force);
ClassDB::bind_method(D_METHOD("add_force", "force", "position"), &RigidBody2D::add_force, Vector2());
ClassDB::bind_method(D_METHOD("add_torque", "torque"), &RigidBody2D::add_torque);
ClassDB::bind_method(D_METHOD("set_sleeping", "sleeping"), &RigidBody2D::set_sleeping);
ClassDB::bind_method(D_METHOD("is_sleeping"), &RigidBody2D::is_sleeping);
ClassDB::bind_method(D_METHOD("set_can_sleep", "able_to_sleep"), &RigidBody2D::set_can_sleep);
ClassDB::bind_method(D_METHOD("is_able_to_sleep"), &RigidBody2D::is_able_to_sleep);
ClassDB::bind_method(D_METHOD("get_colliding_bodies"), &RigidBody2D::get_colliding_bodies);
BIND_VMETHOD(MethodInfo("_integrate_forces", PropertyInfo(Variant::OBJECT, "state", PROPERTY_HINT_RESOURCE_TYPE, "PhysicsDirectBodyState2D")));
ADD_PROPERTY(PropertyInfo(Variant::INT, "mode", PROPERTY_HINT_ENUM, "Dynamic,Static,DynamicLocked,Kinematic"), "set_mode", "get_mode");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "mass", PROPERTY_HINT_RANGE, "0.01,65535,0.01,exp"), "set_mass", "get_mass");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "inertia", PROPERTY_HINT_RANGE, "0.01,65535,0.01,exp", PROPERTY_USAGE_NONE), "set_inertia", "get_inertia");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "physics_material_override", PROPERTY_HINT_RESOURCE_TYPE, "PhysicsMaterial"), "set_physics_material_override", "get_physics_material_override");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "gravity_scale", PROPERTY_HINT_RANGE, "-128,128,0.01"), "set_gravity_scale", "get_gravity_scale");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "custom_integrator"), "set_use_custom_integrator", "is_using_custom_integrator");
ADD_PROPERTY(PropertyInfo(Variant::INT, "continuous_cd", PROPERTY_HINT_ENUM, "Disabled,Cast Ray,Cast Shape"), "set_continuous_collision_detection_mode", "get_continuous_collision_detection_mode");
ADD_PROPERTY(PropertyInfo(Variant::INT, "contacts_reported", PROPERTY_HINT_RANGE, "0,64,1,or_greater"), "set_max_contacts_reported", "get_max_contacts_reported");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "contact_monitor"), "set_contact_monitor", "is_contact_monitor_enabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "sleeping"), "set_sleeping", "is_sleeping");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "can_sleep"), "set_can_sleep", "is_able_to_sleep");
ADD_GROUP("Linear", "linear_");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "linear_velocity"), "set_linear_velocity", "get_linear_velocity");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "linear_damp", PROPERTY_HINT_RANGE, "-1,100,0.001,or_greater"), "set_linear_damp", "get_linear_damp");
ADD_GROUP("Angular", "angular_");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "angular_velocity"), "set_angular_velocity", "get_angular_velocity");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "angular_damp", PROPERTY_HINT_RANGE, "-1,100,0.001,or_greater"), "set_angular_damp", "get_angular_damp");
ADD_GROUP("Applied Forces", "applied_");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "applied_force"), "set_applied_force", "get_applied_force");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "applied_torque"), "set_applied_torque", "get_applied_torque");
ADD_SIGNAL(MethodInfo("body_shape_entered", PropertyInfo(Variant::RID, "body_rid"), PropertyInfo(Variant::OBJECT, "body", PROPERTY_HINT_RESOURCE_TYPE, "Node"), PropertyInfo(Variant::INT, "body_shape"), PropertyInfo(Variant::INT, "local_shape")));
ADD_SIGNAL(MethodInfo("body_shape_exited", PropertyInfo(Variant::RID, "body_rid"), PropertyInfo(Variant::OBJECT, "body", PROPERTY_HINT_RESOURCE_TYPE, "Node"), PropertyInfo(Variant::INT, "body_shape"), PropertyInfo(Variant::INT, "local_shape")));
ADD_SIGNAL(MethodInfo("body_entered", PropertyInfo(Variant::OBJECT, "body", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("body_exited", PropertyInfo(Variant::OBJECT, "body", PROPERTY_HINT_RESOURCE_TYPE, "Node")));
ADD_SIGNAL(MethodInfo("sleeping_state_changed"));
BIND_ENUM_CONSTANT(MODE_DYNAMIC);
BIND_ENUM_CONSTANT(MODE_STATIC);
BIND_ENUM_CONSTANT(MODE_DYNAMIC_LOCKED);
BIND_ENUM_CONSTANT(MODE_KINEMATIC);
BIND_ENUM_CONSTANT(CCD_MODE_DISABLED);
BIND_ENUM_CONSTANT(CCD_MODE_CAST_RAY);
BIND_ENUM_CONSTANT(CCD_MODE_CAST_SHAPE);
}
RigidBody2D::RigidBody2D() :
PhysicsBody2D(PhysicsServer2D::BODY_MODE_DYNAMIC) {
PhysicsServer2D::get_singleton()->body_set_force_integration_callback(get_rid(), callable_mp(this, &RigidBody2D::_direct_state_changed));
}
RigidBody2D::~RigidBody2D() {
if (contact_monitor) {
memdelete(contact_monitor);
}
}
void RigidBody2D::_reload_physics_characteristics() {
if (physics_material_override.is_null()) {
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_BOUNCE, 0);
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_FRICTION, 1);
} else {
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_BOUNCE, physics_material_override->computed_bounce());
PhysicsServer2D::get_singleton()->body_set_param(get_rid(), PhysicsServer2D::BODY_PARAM_FRICTION, physics_material_override->computed_friction());
}
}
//////////////////////////
//so, if you pass 45 as limit, avoid numerical precision errors when angle is 45.
#define FLOOR_ANGLE_THRESHOLD 0.01
void CharacterBody2D::move_and_slide() {
Vector2 body_velocity_normal = linear_velocity.normalized();
bool was_on_floor = on_floor;
// Hack in order to work with calling from _process as well as from _physics_process; calling from thread is risky
float delta = Engine::get_singleton()->is_in_physics_frame() ? get_physics_process_delta_time() : get_process_delta_time();
Vector2 current_floor_velocity = floor_velocity;
if ((on_floor || on_wall) && on_floor_body.is_valid()) {
//this approach makes sure there is less delay between the actual body velocity and the one we saved
PhysicsDirectBodyState2D *bs = PhysicsServer2D::get_singleton()->body_get_direct_state(on_floor_body);
if (bs) {
current_floor_velocity = bs->get_linear_velocity();
}
}
motion_results.clear();
on_floor = false;
on_ceiling = false;
on_wall = false;
floor_normal = Vector2();
floor_velocity = Vector2();
if (current_floor_velocity != Vector2()) {
PhysicsServer2D::MotionResult floor_result;
Set<RID> exclude;
exclude.insert(on_floor_body);
if (move_and_collide(current_floor_velocity * delta, infinite_inertia, floor_result, true, false, false, false, exclude)) {
motion_results.push_back(floor_result);
_set_collision_direction(floor_result);
}
}
on_floor_body = RID();
Vector2 motion = linear_velocity * delta;
// No sliding on first attempt to keep floor motion stable when possible,
// when stop on slope is enabled.
bool sliding_enabled = !stop_on_slope;
for (int iteration = 0; iteration < max_slides; ++iteration) {
PhysicsServer2D::MotionResult result;
bool found_collision = false;
for (int i = 0; i < 2; ++i) {
bool collided;
if (i == 0) { //collide
collided = move_and_collide(motion, infinite_inertia, result, margin, true, false, !sliding_enabled);
if (!collided) {
motion = Vector2(); //clear because no collision happened and motion completed
}
} else { //separate raycasts (if any)
collided = separate_raycast_shapes(result);
if (collided) {
result.remainder = motion; //keep
result.motion = Vector2();
}
}
if (collided) {
found_collision = true;
motion_results.push_back(result);
_set_collision_direction(result);
if (on_floor && stop_on_slope) {
if ((body_velocity_normal + up_direction).length() < 0.01) {
Transform2D gt = get_global_transform();
if (result.motion.length() > margin) {
gt.elements[2] -= result.motion.slide(up_direction);
} else {
gt.elements[2] -= result.motion;
}
set_global_transform(gt);
linear_velocity = Vector2();
return;
}
}
if (sliding_enabled || !on_floor) {
motion = result.remainder.slide(result.collision_normal);
linear_velocity = linear_velocity.slide(result.collision_normal);
} else {
motion = result.remainder;
}
}
sliding_enabled = true;
}
if (!found_collision || motion == Vector2()) {
break;
}
}
if (!on_floor && !on_wall) {
// Add last platform velocity when just left a moving platform.
linear_velocity += current_floor_velocity;
}
if (!was_on_floor || snap == Vector2()) {
return;
}
// Apply snap.
Transform2D gt = get_global_transform();
PhysicsServer2D::MotionResult result;
if (move_and_collide(snap, infinite_inertia, result, margin, false, true, false)) {
bool apply = true;
if (up_direction != Vector2()) {
if (Math::acos(result.collision_normal.dot(up_direction)) <= floor_max_angle + FLOOR_ANGLE_THRESHOLD) {
on_floor = true;
floor_normal = result.collision_normal;
on_floor_body = result.collider;
floor_velocity = result.collider_velocity;
if (stop_on_slope) {
// move and collide may stray the object a bit because of pre un-stucking,
// so only ensure that motion happens on floor direction in this case.
if (result.motion.length() > margin) {
result.motion = up_direction * up_direction.dot(result.motion);
} else {
result.motion = Vector2();
}
}
} else {
apply = false;
}
}
if (apply) {
gt.elements[2] += result.motion;
set_global_transform(gt);
}
}
}
void CharacterBody2D::_set_collision_direction(const PhysicsServer2D::MotionResult &p_result) {
on_floor = false;
on_ceiling = false;
on_wall = false;
if (up_direction == Vector2()) {
//all is a wall
on_wall = true;
} else {
if (Math::acos(p_result.collision_normal.dot(up_direction)) <= floor_max_angle + FLOOR_ANGLE_THRESHOLD) { //floor
on_floor = true;
floor_normal = p_result.collision_normal;
on_floor_body = p_result.collider;
floor_velocity = p_result.collider_velocity;
} else if (Math::acos(p_result.collision_normal.dot(-up_direction)) <= floor_max_angle + FLOOR_ANGLE_THRESHOLD) { //ceiling
on_ceiling = true;
} else {
on_wall = true;
on_floor_body = p_result.collider;
floor_velocity = p_result.collider_velocity;
}
}
}
bool CharacterBody2D::separate_raycast_shapes(PhysicsServer2D::MotionResult &r_result) {
PhysicsServer2D::SeparationResult sep_res[8]; //max 8 rays
Transform2D gt = get_global_transform();
Vector2 recover;
int hits = PhysicsServer2D::get_singleton()->body_test_ray_separation(get_rid(), gt, infinite_inertia, recover, sep_res, 8, margin);
int deepest = -1;
real_t deepest_depth;
for (int i = 0; i < hits; i++) {
if (deepest == -1 || sep_res[i].collision_depth > deepest_depth) {
deepest = i;
deepest_depth = sep_res[i].collision_depth;
}
}
gt.elements[2] += recover;
set_global_transform(gt);
if (deepest != -1) {
r_result.collider_id = sep_res[deepest].collider_id;
r_result.collider_metadata = sep_res[deepest].collider_metadata;
r_result.collider_shape = sep_res[deepest].collider_shape;
r_result.collider_velocity = sep_res[deepest].collider_velocity;
r_result.collision_point = sep_res[deepest].collision_point;
r_result.collision_normal = sep_res[deepest].collision_normal;
r_result.collision_local_shape = sep_res[deepest].collision_local_shape;
r_result.motion = recover;
r_result.remainder = Vector2();
return true;
} else {
return false;
}
}
const Vector2 &CharacterBody2D::get_linear_velocity() const {
return linear_velocity;
}
void CharacterBody2D::set_linear_velocity(const Vector2 &p_velocity) {
linear_velocity = p_velocity;
}
bool CharacterBody2D::is_on_floor() const {
return on_floor;
}
bool CharacterBody2D::is_on_wall() const {
return on_wall;
}
bool CharacterBody2D::is_on_ceiling() const {
return on_ceiling;
}
Vector2 CharacterBody2D::get_floor_normal() const {
return floor_normal;
}
Vector2 CharacterBody2D::get_floor_velocity() const {
return floor_velocity;
}
int CharacterBody2D::get_slide_count() const {
return motion_results.size();
}
PhysicsServer2D::MotionResult CharacterBody2D::get_slide_collision(int p_bounce) const {
ERR_FAIL_INDEX_V(p_bounce, motion_results.size(), PhysicsServer2D::MotionResult());
return motion_results[p_bounce];
}
Ref<KinematicCollision2D> CharacterBody2D::_get_slide_collision(int p_bounce) {
ERR_FAIL_INDEX_V(p_bounce, motion_results.size(), Ref<KinematicCollision2D>());
if (p_bounce >= slide_colliders.size()) {
slide_colliders.resize(p_bounce + 1);
}
if (slide_colliders[p_bounce].is_null()) {
slide_colliders.write[p_bounce].instantiate();
slide_colliders.write[p_bounce]->owner = this;
}
slide_colliders.write[p_bounce]->result = motion_results[p_bounce];
return slide_colliders[p_bounce];
}
void CharacterBody2D::set_safe_margin(real_t p_margin) {
margin = p_margin;
}
real_t CharacterBody2D::get_safe_margin() const {
return margin;
}
bool CharacterBody2D::is_stop_on_slope_enabled() const {
return stop_on_slope;
}
void CharacterBody2D::set_stop_on_slope_enabled(bool p_enabled) {
stop_on_slope = p_enabled;
}
bool CharacterBody2D::is_infinite_inertia_enabled() const {
return infinite_inertia;
}
void CharacterBody2D::set_infinite_inertia_enabled(bool p_enabled) {
infinite_inertia = p_enabled;
}
int CharacterBody2D::get_max_slides() const {
return max_slides;
}
void CharacterBody2D::set_max_slides(int p_max_slides) {
ERR_FAIL_COND(p_max_slides > 0);
max_slides = p_max_slides;
}
real_t CharacterBody2D::get_floor_max_angle() const {
return floor_max_angle;
}
void CharacterBody2D::set_floor_max_angle(real_t p_radians) {
floor_max_angle = p_radians;
}
const Vector2 &CharacterBody2D::get_snap() const {
return snap;
}
void CharacterBody2D::set_snap(const Vector2 &p_snap) {
snap = p_snap;
}
const Vector2 &CharacterBody2D::get_up_direction() const {
return up_direction;
}
void CharacterBody2D::set_up_direction(const Vector2 &p_up_direction) {
up_direction = p_up_direction.normalized();
}
void CharacterBody2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_ENTER_TREE: {
// Reset move_and_slide() data.
on_floor = false;
on_floor_body = RID();
on_ceiling = false;
on_wall = false;
motion_results.clear();
floor_velocity = Vector2();
} break;
}
}
void CharacterBody2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("move_and_slide"), &CharacterBody2D::move_and_slide);
ClassDB::bind_method(D_METHOD("set_linear_velocity", "linear_velocity"), &CharacterBody2D::set_linear_velocity);
ClassDB::bind_method(D_METHOD("get_linear_velocity"), &CharacterBody2D::get_linear_velocity);
ClassDB::bind_method(D_METHOD("set_safe_margin", "pixels"), &CharacterBody2D::set_safe_margin);
ClassDB::bind_method(D_METHOD("get_safe_margin"), &CharacterBody2D::get_safe_margin);
ClassDB::bind_method(D_METHOD("is_stop_on_slope_enabled"), &CharacterBody2D::is_stop_on_slope_enabled);
ClassDB::bind_method(D_METHOD("set_stop_on_slope_enabled", "enabled"), &CharacterBody2D::set_stop_on_slope_enabled);
ClassDB::bind_method(D_METHOD("is_infinite_inertia_enabled"), &CharacterBody2D::is_infinite_inertia_enabled);
ClassDB::bind_method(D_METHOD("set_infinite_inertia_enabled", "enabled"), &CharacterBody2D::set_infinite_inertia_enabled);
ClassDB::bind_method(D_METHOD("get_max_slides"), &CharacterBody2D::get_max_slides);
ClassDB::bind_method(D_METHOD("set_max_slides", "max_slides"), &CharacterBody2D::set_max_slides);
ClassDB::bind_method(D_METHOD("get_floor_max_angle"), &CharacterBody2D::get_floor_max_angle);
ClassDB::bind_method(D_METHOD("set_floor_max_angle", "radians"), &CharacterBody2D::set_floor_max_angle);
ClassDB::bind_method(D_METHOD("get_snap"), &CharacterBody2D::get_snap);
ClassDB::bind_method(D_METHOD("set_snap", "snap"), &CharacterBody2D::set_snap);
ClassDB::bind_method(D_METHOD("get_up_direction"), &CharacterBody2D::get_up_direction);
ClassDB::bind_method(D_METHOD("set_up_direction", "up_direction"), &CharacterBody2D::set_up_direction);
ClassDB::bind_method(D_METHOD("is_on_floor"), &CharacterBody2D::is_on_floor);
ClassDB::bind_method(D_METHOD("is_on_ceiling"), &CharacterBody2D::is_on_ceiling);
ClassDB::bind_method(D_METHOD("is_on_wall"), &CharacterBody2D::is_on_wall);
ClassDB::bind_method(D_METHOD("get_floor_normal"), &CharacterBody2D::get_floor_normal);
ClassDB::bind_method(D_METHOD("get_floor_velocity"), &CharacterBody2D::get_floor_velocity);
ClassDB::bind_method(D_METHOD("get_slide_count"), &CharacterBody2D::get_slide_count);
ClassDB::bind_method(D_METHOD("get_slide_collision", "slide_idx"), &CharacterBody2D::_get_slide_collision);
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "linear_velocity"), "set_linear_velocity", "get_linear_velocity");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stop_on_slope"), "set_stop_on_slope_enabled", "is_stop_on_slope_enabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "infinite_inertia"), "set_infinite_inertia_enabled", "is_infinite_inertia_enabled");
ADD_PROPERTY(PropertyInfo(Variant::INT, "max_slides"), "set_max_slides", "get_max_slides");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "floor_max_angle", PROPERTY_HINT_RANGE, "0,180,0.1"), "set_floor_max_angle", "get_floor_max_angle");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "snap"), "set_snap", "get_snap");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "up_direction"), "set_up_direction", "get_up_direction");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "collision/safe_margin", PROPERTY_HINT_RANGE, "0.001,256,0.001"), "set_safe_margin", "get_safe_margin");
}
CharacterBody2D::CharacterBody2D() :
PhysicsBody2D(PhysicsServer2D::BODY_MODE_KINEMATIC) {
}
CharacterBody2D::~CharacterBody2D() {
for (int i = 0; i < slide_colliders.size(); i++) {
if (slide_colliders[i].is_valid()) {
slide_colliders.write[i]->owner = nullptr;
}
}
}
////////////////////////
Vector2 KinematicCollision2D::get_position() const {
return result.collision_point;
}
Vector2 KinematicCollision2D::get_normal() const {
return result.collision_normal;
}
Vector2 KinematicCollision2D::get_travel() const {
return result.motion;
}
Vector2 KinematicCollision2D::get_remainder() const {
return result.remainder;
}
Object *KinematicCollision2D::get_local_shape() const {
if (!owner) {
return nullptr;
}
uint32_t ownerid = owner->shape_find_owner(result.collision_local_shape);
return owner->shape_owner_get_owner(ownerid);
}
Object *KinematicCollision2D::get_collider() const {
if (result.collider_id.is_valid()) {
return ObjectDB::get_instance(result.collider_id);
}
return nullptr;
}
ObjectID KinematicCollision2D::get_collider_id() const {
return result.collider_id;
}
RID KinematicCollision2D::get_collider_rid() const {
return result.collider;
}
Object *KinematicCollision2D::get_collider_shape() const {
Object *collider = get_collider();
if (collider) {
CollisionObject2D *obj2d = Object::cast_to<CollisionObject2D>(collider);
if (obj2d) {
uint32_t ownerid = obj2d->shape_find_owner(result.collider_shape);
return obj2d->shape_owner_get_owner(ownerid);
}
}
return nullptr;
}
int KinematicCollision2D::get_collider_shape_index() const {
return result.collider_shape;
}
Vector2 KinematicCollision2D::get_collider_velocity() const {
return result.collider_velocity;
}
Variant KinematicCollision2D::get_collider_metadata() const {
return Variant();
}
void KinematicCollision2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("get_position"), &KinematicCollision2D::get_position);
ClassDB::bind_method(D_METHOD("get_normal"), &KinematicCollision2D::get_normal);
ClassDB::bind_method(D_METHOD("get_travel"), &KinematicCollision2D::get_travel);
ClassDB::bind_method(D_METHOD("get_remainder"), &KinematicCollision2D::get_remainder);
ClassDB::bind_method(D_METHOD("get_local_shape"), &KinematicCollision2D::get_local_shape);
ClassDB::bind_method(D_METHOD("get_collider"), &KinematicCollision2D::get_collider);
ClassDB::bind_method(D_METHOD("get_collider_id"), &KinematicCollision2D::get_collider_id);
ClassDB::bind_method(D_METHOD("get_collider_rid"), &KinematicCollision2D::get_collider_rid);
ClassDB::bind_method(D_METHOD("get_collider_shape"), &KinematicCollision2D::get_collider_shape);
ClassDB::bind_method(D_METHOD("get_collider_shape_index"), &KinematicCollision2D::get_collider_shape_index);
ClassDB::bind_method(D_METHOD("get_collider_velocity"), &KinematicCollision2D::get_collider_velocity);
ClassDB::bind_method(D_METHOD("get_collider_metadata"), &KinematicCollision2D::get_collider_metadata);
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "position"), "", "get_position");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "normal"), "", "get_normal");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "travel"), "", "get_travel");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "remainder"), "", "get_remainder");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "local_shape"), "", "get_local_shape");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "collider"), "", "get_collider");
ADD_PROPERTY(PropertyInfo(Variant::INT, "collider_id"), "", "get_collider_id");
ADD_PROPERTY(PropertyInfo(Variant::RID, "collider_rid"), "", "get_collider_rid");
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "collider_shape"), "", "get_collider_shape");
ADD_PROPERTY(PropertyInfo(Variant::INT, "collider_shape_index"), "", "get_collider_shape_index");
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "collider_velocity"), "", "get_collider_velocity");
ADD_PROPERTY(PropertyInfo(Variant::NIL, "collider_metadata", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NIL_IS_VARIANT), "", "get_collider_metadata");
}
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