godot/modules/jolt_physics/shapes/jolt_capsule_shape_3d.cpp

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/*  jolt_capsule_shape_3d.cpp                                             */
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#include "jolt_capsule_shape_3d.h"

#include "../misc/jolt_type_conversions.h"

#include "Jolt/Physics/Collision/Shape/CapsuleShape.h"

JPH::ShapeRefC JoltCapsuleShape3D::_build() const {
	ERR_FAIL_COND_V_MSG(radius <= 0.0f, nullptr, vformat("Failed to build Jolt Physics capsule shape with %s. Its radius must be greater than 0. This shape belongs to %s.", to_string(), _owners_to_string()));
	ERR_FAIL_COND_V_MSG(height <= 0.0f, nullptr, vformat("Failed to build Jolt Physics capsule shape with %s. Its height must be greater than 0. This shape belongs to %s.", to_string(), _owners_to_string()));
	ERR_FAIL_COND_V_MSG(height < radius * 2.0f, nullptr, vformat("Failed to build Jolt Physics capsule shape with %s. Its height must be at least double that of its radius. This shape belongs to %s.", to_string(), _owners_to_string()));

	const float half_height = height / 2.0f;
	const float cylinder_height = half_height - radius;

	const JPH::CapsuleShapeSettings shape_settings(cylinder_height, radius);
	const JPH::ShapeSettings::ShapeResult shape_result = shape_settings.Create();
	ERR_FAIL_COND_V_MSG(shape_result.HasError(), nullptr, vformat("Failed to build Jolt Physics capsule shape with %s. It returned the following error: '%s'. This shape belongs to %s.", to_string(), to_godot(shape_result.GetError()), _owners_to_string()));

	return shape_result.Get();
}

Variant JoltCapsuleShape3D::get_data() const {
	Dictionary data;
	data["height"] = height;
	data["radius"] = radius;
	return data;
}

void JoltCapsuleShape3D::set_data(const Variant &p_data) {
	ERR_FAIL_COND(p_data.get_type() != Variant::DICTIONARY);

	const Dictionary data = p_data;

	const Variant maybe_height = data.get("height", Variant());
	ERR_FAIL_COND(maybe_height.get_type() != Variant::FLOAT);

	const Variant maybe_radius = data.get("radius", Variant());
	ERR_FAIL_COND(maybe_radius.get_type() != Variant::FLOAT);

	const float new_height = maybe_height;
	const float new_radius = maybe_radius;

	if (unlikely(new_height == height && new_radius == radius)) {
		return;
	}

	height = new_height;
	radius = new_radius;

	destroy();
}

AABB JoltCapsuleShape3D::get_aabb() const {
	const Vector3 half_extents(radius, height / 2.0f, radius);
	return AABB(-half_extents, half_extents * 2.0f);
}

String JoltCapsuleShape3D::to_string() const {
	return vformat("{height=%f radius=%f}", height, radius);
}