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https://github.com/Relintai/pandemonium_engine.git
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78 lines
2.6 KiB
C++
78 lines
2.6 KiB
C++
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#include "gsai_pursue.h"
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GSAISteeringAgent GSAIPursue::get_ *target() {
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return *target;
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}
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void GSAIPursue::set_ *target(const GSAISteeringAgent &val) {
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*target = val;
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}
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float GSAIPursue::get_predict_time_max() const {
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return predict_time_max;
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}
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void GSAIPursue::set_predict_time_max(const float val) {
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predict_time_max = val;
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}
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// Calculates an acceleration to make an agent intercept another based on the;
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// target agent's movement.;
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// @category - Individual behaviors;
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// The target agent that the behavior is trying to intercept.;
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GSAISteeringAgent *target;
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// The maximum amount of time in the future the behavior predicts the target's;
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// location.;
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float predict_time_max = 1.0;
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void GSAIPursue::_calculate_steering(const GSAITargetAcceleration &acceleration) {
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Vector3 target_position = target.position;
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float distance_squared = (target_position - agent.position).length_squared();
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float speed_squared = agent.linear_velocity.length_squared();
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float predict_time = predict_time_max;
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if (speed_squared > 0) {
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Variant predict_time_squared = distance_squared / speed_squared;
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if (predict_time_squared < predict_time_max * predict_time_max) {
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predict_time = sqrt(predict_time_squared);
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}
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}
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acceleration.linear = ((target_position + (target.linear_velocity * predict_time)) - agent.position).normalized();
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acceleration.linear *= get_modified_acceleration();
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acceleration.angular = 0;
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}
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float GSAIPursue::get_modified_acceleration() {
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return call("_get_modified_acceleration");
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}
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float GSAIPursue::_get_modified_acceleration() {
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return agent.linear_acceleration_max;
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}
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}
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GSAIPursue::GSAIPursue() {
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*target;
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predict_time_max = 1.0;
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}
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GSAIPursue::~GSAIPursue() {
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}
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static void GSAIPursue::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_*target"), &GSAIPursue::get_ * target);
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ClassDB::bind_method(D_METHOD("set_*target", "value"), &GSAIPursue::set_ * target);
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ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "*target", PROPERTY_HINT_RESOURCE_TYPE, "GSAISteeringAgent"), "set_*target", "get_*target");
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ClassDB::bind_method(D_METHOD("get_predict_time_max"), &GSAIPursue::get_predict_time_max);
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ClassDB::bind_method(D_METHOD("set_predict_time_max", "value"), &GSAIPursue::set_predict_time_max);
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "predict_time_max"), "set_predict_time_max", "get_predict_time_max");
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ClassDB::bind_method(D_METHOD("_calculate_steering", "acceleration"), &GSAIPursue::_calculate_steering);
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ClassDB::bind_method(D_METHOD("get_modified_acceleration"), &GSAIPursue::get_modified_acceleration);
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ClassDB::bind_method(D_METHOD("_get_modified_acceleration"), &GSAIPursue::_get_modified_acceleration);
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}
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