initial commit, 4.5 stable

modules/godot_physics_2d/godot_collision_object_2d.cpp

@@ -0,0 +1,244 @@
+/**************************************************************************/
+/*  godot_collision_object_2d.cpp                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 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 "godot_collision_object_2d.h"
+#include "godot_physics_server_2d.h"
+#include "godot_space_2d.h"
+
+void GodotCollisionObject2D::add_shape(GodotShape2D *p_shape, const Transform2D &p_transform, bool p_disabled) {
+	Shape s;
+	s.shape = p_shape;
+	s.xform = p_transform;
+	s.xform_inv = s.xform.affine_inverse();
+	s.bpid = 0; //needs update
+	s.disabled = p_disabled;
+	s.one_way_collision = false;
+	s.one_way_collision_margin = 0;
+	shapes.push_back(s);
+	p_shape->add_owner(this);
+
+	if (!pending_shape_update_list.in_list()) {
+		GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+	}
+}
+
+void GodotCollisionObject2D::set_shape(int p_index, GodotShape2D *p_shape) {
+	ERR_FAIL_INDEX(p_index, shapes.size());
+	shapes[p_index].shape->remove_owner(this);
+	shapes.write[p_index].shape = p_shape;
+
+	p_shape->add_owner(this);
+
+	if (!pending_shape_update_list.in_list()) {
+		GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+	}
+}
+
+void GodotCollisionObject2D::set_shape_transform(int p_index, const Transform2D &p_transform) {
+	ERR_FAIL_INDEX(p_index, shapes.size());
+
+	shapes.write[p_index].xform = p_transform;
+	shapes.write[p_index].xform_inv = p_transform.affine_inverse();
+
+	if (!pending_shape_update_list.in_list()) {
+		GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+	}
+}
+
+void GodotCollisionObject2D::set_shape_disabled(int p_idx, bool p_disabled) {
+	ERR_FAIL_INDEX(p_idx, shapes.size());
+
+	GodotCollisionObject2D::Shape &shape = shapes.write[p_idx];
+	if (shape.disabled == p_disabled) {
+		return;
+	}
+
+	shape.disabled = p_disabled;
+
+	if (!space) {
+		return;
+	}
+
+	if (p_disabled && shape.bpid != 0) {
+		space->get_broadphase()->remove(shape.bpid);
+		shape.bpid = 0;
+		if (!pending_shape_update_list.in_list()) {
+			GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+		}
+	} else if (!p_disabled && shape.bpid == 0) {
+		if (!pending_shape_update_list.in_list()) {
+			GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+		}
+	}
+}
+
+void GodotCollisionObject2D::remove_shape(GodotShape2D *p_shape) {
+	//remove a shape, all the times it appears
+	for (int i = 0; i < shapes.size(); i++) {
+		if (shapes[i].shape == p_shape) {
+			remove_shape(i);
+			i--;
+		}
+	}
+}
+
+void GodotCollisionObject2D::remove_shape(int p_index) {
+	//remove anything from shape to be erased to end, so subindices don't change
+	ERR_FAIL_INDEX(p_index, shapes.size());
+	for (int i = p_index; i < shapes.size(); i++) {
+		if (shapes[i].bpid == 0) {
+			continue;
+		}
+		//should never get here with a null owner
+		space->get_broadphase()->remove(shapes[i].bpid);
+		shapes.write[i].bpid = 0;
+	}
+	shapes[p_index].shape->remove_owner(this);
+	shapes.remove_at(p_index);
+
+	if (!pending_shape_update_list.in_list()) {
+		GodotPhysicsServer2D::godot_singleton->pending_shape_update_list.add(&pending_shape_update_list);
+	}
+	// _update_shapes();
+	// _shapes_changed();
+}
+
+void GodotCollisionObject2D::_set_static(bool p_static) {
+	if (_static == p_static) {
+		return;
+	}
+	_static = p_static;
+
+	if (!space) {
+		return;
+	}
+	for (int i = 0; i < get_shape_count(); i++) {
+		const Shape &s = shapes[i];
+		if (s.bpid > 0) {
+			space->get_broadphase()->set_static(s.bpid, _static);
+		}
+	}
+}
+
+void GodotCollisionObject2D::_unregister_shapes() {
+	for (int i = 0; i < shapes.size(); i++) {
+		Shape &s = shapes.write[i];
+		if (s.bpid > 0) {
+			space->get_broadphase()->remove(s.bpid);
+			s.bpid = 0;
+		}
+	}
+}
+
+void GodotCollisionObject2D::_update_shapes() {
+	if (!space) {
+		return;
+	}
+
+	for (int i = 0; i < shapes.size(); i++) {
+		Shape &s = shapes.write[i];
+		if (s.disabled) {
+			continue;
+		}
+
+		//not quite correct, should compute the next matrix..
+		Rect2 shape_aabb = s.shape->get_aabb();
+		Transform2D xform = transform * s.xform;
+		shape_aabb = xform.xform(shape_aabb);
+		shape_aabb.grow_by((s.aabb_cache.size.x + s.aabb_cache.size.y) * 0.5 * 0.05);
+		s.aabb_cache = shape_aabb;
+
+		if (s.bpid == 0) {
+			s.bpid = space->get_broadphase()->create(this, i, shape_aabb, _static);
+			space->get_broadphase()->set_static(s.bpid, _static);
+		}
+
+		space->get_broadphase()->move(s.bpid, shape_aabb);
+	}
+}
+
+void GodotCollisionObject2D::_update_shapes_with_motion(const Vector2 &p_motion) {
+	if (!space) {
+		return;
+	}
+
+	for (int i = 0; i < shapes.size(); i++) {
+		Shape &s = shapes.write[i];
+		if (s.disabled) {
+			continue;
+		}
+
+		//not quite correct, should compute the next matrix..
+		Rect2 shape_aabb = s.shape->get_aabb();
+		Transform2D xform = transform * s.xform;
+		shape_aabb = xform.xform(shape_aabb);
+		shape_aabb = shape_aabb.merge(Rect2(shape_aabb.position + p_motion, shape_aabb.size)); //use motion
+		s.aabb_cache = shape_aabb;
+
+		if (s.bpid == 0) {
+			s.bpid = space->get_broadphase()->create(this, i, shape_aabb, _static);
+			space->get_broadphase()->set_static(s.bpid, _static);
+		}
+
+		space->get_broadphase()->move(s.bpid, shape_aabb);
+	}
+}
+
+void GodotCollisionObject2D::_set_space(GodotSpace2D *p_space) {
+	GodotSpace2D *old_space = space;
+	space = p_space;
+
+	if (old_space) {
+		old_space->remove_object(this);
+
+		for (int i = 0; i < shapes.size(); i++) {
+			Shape &s = shapes.write[i];
+			if (s.bpid) {
+				old_space->get_broadphase()->remove(s.bpid);
+				s.bpid = 0;
+			}
+		}
+	}
+
+	if (space) {
+		space->add_object(this);
+		_update_shapes();
+	}
+}
+
+void GodotCollisionObject2D::_shape_changed() {
+	_update_shapes();
+	_shapes_changed();
+}
+
+GodotCollisionObject2D::GodotCollisionObject2D(Type p_type) :
+		pending_shape_update_list(this) {
+	type = p_type;
+}