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https://github.com/Relintai/pandemonium_engine.git
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77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
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#include "gsai_separation.h"
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float GSAISeparation::get_decay_coefficient() const {
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return decay_coefficient;
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}
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void GSAISeparation::set_decay_coefficient(const float val) {
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decay_coefficient = val;
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}
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GSAITargetAcceleration GSAISeparation::get_ *acceleration() {
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return *acceleration;
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}
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void GSAISeparation::set_ *acceleration(const GSAITargetAcceleration &val) {
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*acceleration = val;
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}
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// Calculates an acceleration that repels the agent from its neighbors in the;
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// given `GSAIProximity`.;
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//;
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// The acceleration is an average based on all neighbors, multiplied by a;
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// strength decreasing by the inverse square law in relation to distance, and it;
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// accumulates.;
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// @category - Group behaviors;
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// The coefficient to calculate how fast the separation strength decays with distance.;
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float decay_coefficient = 1.0;
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GSAITargetAcceleration *acceleration;
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void GSAISeparation::_calculate_steering(const GSAITargetAcceleration &_acceleration) {
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self.acceleration = _acceleration;
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acceleration.set_zero();
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// warning-ignore:return_value_discarded;
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proximity.find_neighbors(_callback);
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}
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// Callback for the proximity to call when finding neighbors. Determines the amount of;
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// acceleration that `neighbor` imposes based on its distance from the owner agent.;
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// @tags - virtual;
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bool GSAISeparation::_report_neighbor(const GSAISteeringAgent &neighbor) {
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Vector3 to_agent = agent.position - neighbor.position;
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float distance_squared = to_agent.length_squared();
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float acceleration_max = agent.linear_acceleration_max;
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Variant strength = decay_coefficient / distance_squared;
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if (strength > acceleration_max) {
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strength = acceleration_max;
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}
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acceleration.linear += to_agent * (strength / sqrt(distance_squared));
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return true;
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}
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}
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GSAISeparation::GSAISeparation() {
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decay_coefficient = 1.0;
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*acceleration;
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}
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GSAISeparation::~GSAISeparation() {
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}
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static void GSAISeparation::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_decay_coefficient"), &GSAISeparation::get_decay_coefficient);
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ClassDB::bind_method(D_METHOD("set_decay_coefficient", "value"), &GSAISeparation::set_decay_coefficient);
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "decay_coefficient"), "set_decay_coefficient", "get_decay_coefficient");
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ClassDB::bind_method(D_METHOD("get_*acceleration"), &GSAISeparation::get_ * acceleration);
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ClassDB::bind_method(D_METHOD("set_*acceleration", "value"), &GSAISeparation::set_ * acceleration);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "*acceleration", PROPERTY_HINT_RESOURCE_TYPE, "GSAITargetAcceleration"), "set_*acceleration", "get_*acceleration");
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ClassDB::bind_method(D_METHOD("_calculate_steering", "_acceleration"), &GSAISeparation::_calculate_steering);
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ClassDB::bind_method(D_METHOD("_report_neighbor", "neighbor"), &GSAISeparation::_report_neighbor);
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}
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