godot/scene/resources/ray_shape_2d.cpp

120 lines
4.7 KiB
C++

/*************************************************************************/
/* ray_shape_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 "ray_shape_2d.h"
#include "servers/physics_server_2d.h"
#include "servers/rendering_server.h"
void RayShape2D::_update_shape() {
Dictionary d;
d["length"] = length;
d["slips_on_slope"] = slips_on_slope;
PhysicsServer2D::get_singleton()->shape_set_data(get_rid(), d);
emit_changed();
}
void RayShape2D::draw(const RID &p_to_rid, const Color &p_color) {
const Vector2 target_position = Vector2(0, get_length());
const float max_arrow_size = 6;
const float line_width = 1.4;
bool no_line = target_position.length() < line_width;
float arrow_size = CLAMP(target_position.length() * 2 / 3, line_width, max_arrow_size);
if (no_line) {
arrow_size = target_position.length();
} else {
RS::get_singleton()->canvas_item_add_line(p_to_rid, Vector2(), target_position - target_position.normalized() * arrow_size, p_color, line_width);
}
Transform2D xf;
xf.rotate(target_position.angle());
xf.translate(Vector2(no_line ? 0 : target_position.length() - arrow_size, 0));
Vector<Vector2> pts;
pts.push_back(xf.xform(Vector2(arrow_size, 0)));
pts.push_back(xf.xform(Vector2(0, 0.5 * arrow_size)));
pts.push_back(xf.xform(Vector2(0, -0.5 * arrow_size)));
Vector<Color> cols;
for (int i = 0; i < 3; i++) {
cols.push_back(p_color);
}
RS::get_singleton()->canvas_item_add_primitive(p_to_rid, pts, cols, Vector<Point2>(), RID());
}
Rect2 RayShape2D::get_rect() const {
Rect2 rect;
rect.position = Vector2();
rect.expand_to(Vector2(0, length));
rect = rect.grow(Math_SQRT12 * 4);
return rect;
}
real_t RayShape2D::get_enclosing_radius() const {
return length;
}
void RayShape2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_length", "length"), &RayShape2D::set_length);
ClassDB::bind_method(D_METHOD("get_length"), &RayShape2D::get_length);
ClassDB::bind_method(D_METHOD("set_slips_on_slope", "active"), &RayShape2D::set_slips_on_slope);
ClassDB::bind_method(D_METHOD("get_slips_on_slope"), &RayShape2D::get_slips_on_slope);
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "length"), "set_length", "get_length");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "slips_on_slope"), "set_slips_on_slope", "get_slips_on_slope");
}
void RayShape2D::set_length(real_t p_length) {
length = p_length;
_update_shape();
}
real_t RayShape2D::get_length() const {
return length;
}
void RayShape2D::set_slips_on_slope(bool p_active) {
slips_on_slope = p_active;
_update_shape();
}
bool RayShape2D::get_slips_on_slope() const {
return slips_on_slope;
}
RayShape2D::RayShape2D() :
Shape2D(PhysicsServer2D::get_singleton()->ray_shape_create()) {
_update_shape();
}