mirror of
https://github.com/Relintai/pandemonium_engine.git
synced 2024-12-21 11:26:53 +01:00
109 lines
4.7 KiB
C++
109 lines
4.7 KiB
C++
/*************************************************************************/
|
|
/* gsai_pursue.cpp */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* PANDEMONIUM ENGINE */
|
|
/* https://github.com/Relintai/pandemonium_engine */
|
|
/*************************************************************************/
|
|
/* Copyright (c) 2022-present Péter Magyar. */
|
|
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
|
|
/* Copyright (c) 2007-2022 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 "gsai_pursue.h"
|
|
|
|
#include "core/math/math_funcs.h"
|
|
|
|
#include "../gsai_steering_agent.h"
|
|
#include "../gsai_target_acceleration.h"
|
|
|
|
Ref<GSAISteeringAgent> GSAIPursue::get_target() {
|
|
return target;
|
|
}
|
|
|
|
void GSAIPursue::set_target(const Ref<GSAISteeringAgent> &val) {
|
|
target = val;
|
|
}
|
|
|
|
float GSAIPursue::get_predict_time_max() const {
|
|
return predict_time_max;
|
|
}
|
|
|
|
void GSAIPursue::set_predict_time_max(const float val) {
|
|
predict_time_max = val;
|
|
}
|
|
|
|
void GSAIPursue::_calculate_steering(Ref<GSAITargetAcceleration> acceleration) {
|
|
ERR_FAIL_COND(!target.is_valid());
|
|
ERR_FAIL_COND(!agent.is_valid());
|
|
|
|
Vector3 target_position = target->get_position();
|
|
float distance_squared = (target_position - agent->get_position()).length_squared();
|
|
float speed_squared = agent->get_linear_velocity().length_squared();
|
|
float predict_time = predict_time_max;
|
|
|
|
if (speed_squared > 0) {
|
|
float predict_time_squared = distance_squared / speed_squared;
|
|
|
|
if (predict_time_squared < predict_time_max * predict_time_max) {
|
|
predict_time = Math::sqrt(predict_time_squared);
|
|
}
|
|
}
|
|
|
|
Vector3 linear = ((target_position + (target->get_linear_velocity() * predict_time)) - agent->get_position()).normalized();
|
|
linear *= get_modified_acceleration();
|
|
|
|
acceleration->set_linear(linear);
|
|
acceleration->set_angular(0);
|
|
}
|
|
|
|
float GSAIPursue::get_modified_acceleration() {
|
|
return call("_get_modified_acceleration");
|
|
}
|
|
|
|
float GSAIPursue::_get_modified_acceleration() {
|
|
ERR_FAIL_COND_V(!agent.is_valid(), 0);
|
|
|
|
return agent->get_linear_acceleration_max();
|
|
}
|
|
|
|
GSAIPursue::GSAIPursue() {
|
|
predict_time_max = 1.0;
|
|
}
|
|
|
|
GSAIPursue::~GSAIPursue() {
|
|
}
|
|
|
|
void GSAIPursue::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("get_target"), &GSAIPursue::get_target);
|
|
ClassDB::bind_method(D_METHOD("set_target", "value"), &GSAIPursue::set_target);
|
|
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "target", PROPERTY_HINT_RESOURCE_TYPE, "GSAISteeringAgent"), "set_target", "get_target");
|
|
|
|
ClassDB::bind_method(D_METHOD("get_predict_time_max"), &GSAIPursue::get_predict_time_max);
|
|
ClassDB::bind_method(D_METHOD("set_predict_time_max", "value"), &GSAIPursue::set_predict_time_max);
|
|
ADD_PROPERTY(PropertyInfo(Variant::REAL, "predict_time_max"), "set_predict_time_max", "get_predict_time_max");
|
|
|
|
BIND_VMETHOD(MethodInfo(Variant::REAL, "_get_modified_acceleration"));
|
|
ClassDB::bind_method(D_METHOD("get_modified_acceleration"), &GSAIPursue::get_modified_acceleration);
|
|
ClassDB::bind_method(D_METHOD("_get_modified_acceleration"), &GSAIPursue::_get_modified_acceleration);
|
|
}
|