/**************************************************************************/ /* shape_cast_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 "shape_cast_2d.h" #include "core/config/engine.h" #include "core/core_string_names.h" #include "scene/2d/collision_object_2d.h" #include "scene/2d/physics_body_2d.h" #include "scene/resources/circle_shape_2d.h" #include "servers/physics_2d/godot_physics_server_2d.h" void ShapeCast2D::set_target_position(const Vector2 &p_point) { target_position = p_point; if (is_inside_tree() && (Engine::get_singleton()->is_editor_hint() || get_tree()->is_debugging_collisions_hint())) { queue_redraw(); } } Vector2 ShapeCast2D::get_target_position() const { return target_position; } void ShapeCast2D::set_margin(real_t p_margin) { margin = p_margin; } real_t ShapeCast2D::get_margin() const { return margin; } void ShapeCast2D::set_max_results(int p_max_results) { max_results = p_max_results; } int ShapeCast2D::get_max_results() const { return max_results; } void ShapeCast2D::set_collision_mask(uint32_t p_mask) { collision_mask = p_mask; } uint32_t ShapeCast2D::get_collision_mask() const { return collision_mask; } void ShapeCast2D::set_collision_mask_value(int p_layer_number, bool p_value) { ERR_FAIL_COND_MSG(p_layer_number < 1, "Collision layer number must be between 1 and 32 inclusive."); ERR_FAIL_COND_MSG(p_layer_number > 32, "Collision layer number must be between 1 and 32 inclusive."); uint32_t mask = get_collision_mask(); if (p_value) { mask |= 1 << (p_layer_number - 1); } else { mask &= ~(1 << (p_layer_number - 1)); } set_collision_mask(mask); } bool ShapeCast2D::get_collision_mask_value(int p_layer_number) const { ERR_FAIL_COND_V_MSG(p_layer_number < 1, false, "Collision layer number must be between 1 and 32 inclusive."); ERR_FAIL_COND_V_MSG(p_layer_number > 32, false, "Collision layer number must be between 1 and 32 inclusive."); return get_collision_mask() & (1 << (p_layer_number - 1)); } int ShapeCast2D::get_collision_count() const { return result.size(); } bool ShapeCast2D::is_colliding() const { return collided; } Object *ShapeCast2D::get_collider(int p_idx) const { ERR_FAIL_INDEX_V_MSG(p_idx, result.size(), nullptr, "No collider found."); if (result[p_idx].collider_id.is_null()) { return nullptr; } return ObjectDB::get_instance(result[p_idx].collider_id); } RID ShapeCast2D::get_collider_rid(int p_idx) const { ERR_FAIL_INDEX_V_MSG(p_idx, result.size(), RID(), "No collider RID found."); return result[p_idx].rid; } int ShapeCast2D::get_collider_shape(int p_idx) const { ERR_FAIL_INDEX_V_MSG(p_idx, result.size(), -1, "No collider shape found."); return result[p_idx].shape; } Vector2 ShapeCast2D::get_collision_point(int p_idx) const { ERR_FAIL_INDEX_V_MSG(p_idx, result.size(), Vector2(), "No collision point found."); return result[p_idx].point; } Vector2 ShapeCast2D::get_collision_normal(int p_idx) const { ERR_FAIL_INDEX_V_MSG(p_idx, result.size(), Vector2(), "No collision normal found."); return result[p_idx].normal; } real_t ShapeCast2D::get_closest_collision_safe_fraction() const { return collision_safe_fraction; } real_t ShapeCast2D::get_closest_collision_unsafe_fraction() const { return collision_unsafe_fraction; } void ShapeCast2D::set_enabled(bool p_enabled) { enabled = p_enabled; queue_redraw(); if (is_inside_tree() && !Engine::get_singleton()->is_editor_hint()) { set_physics_process_internal(p_enabled); } if (!p_enabled) { collided = false; } } bool ShapeCast2D::is_enabled() const { return enabled; } void ShapeCast2D::set_shape(const Ref<Shape2D> &p_shape) { if (p_shape == shape) { return; } if (shape.is_valid()) { shape->disconnect(CoreStringNames::get_singleton()->changed, callable_mp(this, &ShapeCast2D::_shape_changed)); } shape = p_shape; if (shape.is_valid()) { shape->connect(CoreStringNames::get_singleton()->changed, callable_mp(this, &ShapeCast2D::_shape_changed)); shape_rid = shape->get_rid(); } update_configuration_warnings(); queue_redraw(); } Ref<Shape2D> ShapeCast2D::get_shape() const { return shape; } void ShapeCast2D::set_exclude_parent_body(bool p_exclude_parent_body) { if (exclude_parent_body == p_exclude_parent_body) { return; } exclude_parent_body = p_exclude_parent_body; if (!is_inside_tree()) { return; } if (Object::cast_to<CollisionObject2D>(get_parent())) { if (exclude_parent_body) { exclude.insert(Object::cast_to<CollisionObject2D>(get_parent())->get_rid()); } else { exclude.erase(Object::cast_to<CollisionObject2D>(get_parent())->get_rid()); } } } bool ShapeCast2D::get_exclude_parent_body() const { return exclude_parent_body; } void ShapeCast2D::_shape_changed() { queue_redraw(); } void ShapeCast2D::_notification(int p_what) { switch (p_what) { case NOTIFICATION_ENTER_TREE: { if (enabled && !Engine::get_singleton()->is_editor_hint()) { set_physics_process_internal(true); } else { set_physics_process_internal(false); } if (Object::cast_to<CollisionObject2D>(get_parent())) { if (exclude_parent_body) { exclude.insert(Object::cast_to<CollisionObject2D>(get_parent())->get_rid()); } else { exclude.erase(Object::cast_to<CollisionObject2D>(get_parent())->get_rid()); } } } break; case NOTIFICATION_EXIT_TREE: { if (enabled) { set_physics_process_internal(false); } } break; case NOTIFICATION_DRAW: { #ifdef TOOLS_ENABLED ERR_FAIL_COND(!is_inside_tree()); if (!Engine::get_singleton()->is_editor_hint() && !get_tree()->is_debugging_collisions_hint()) { break; } if (shape.is_null()) { break; } Color draw_col = collided ? Color(1.0, 0.01, 0) : get_tree()->get_debug_collisions_color(); if (!enabled) { float g = draw_col.get_v(); draw_col.r = g; draw_col.g = g; draw_col.b = g; } // Draw continuous chain of shapes along the cast. const int steps = MAX(2, target_position.length() / shape->get_rect().get_size().length() * 4); for (int i = 0; i <= steps; ++i) { Vector2 t = (real_t(i) / steps) * target_position; draw_set_transform(t, 0.0, Size2(1, 1)); shape->draw(get_canvas_item(), draw_col); } draw_set_transform(Vector2(), 0.0, Size2(1, 1)); // Draw an arrow indicating where the ShapeCast is pointing to. if (target_position != Vector2()) { const real_t max_arrow_size = 6; const real_t line_width = 1.4; bool no_line = target_position.length() < line_width; real_t arrow_size = CLAMP(target_position.length() * 2 / 3, line_width, max_arrow_size); if (no_line) { arrow_size = target_position.length(); } else { draw_line(Vector2(), target_position - target_position.normalized() * arrow_size, draw_col, line_width); } Transform2D xf; xf.rotate(target_position.angle()); xf.translate_local(Vector2(no_line ? 0 : target_position.length() - arrow_size, 0)); Vector<Vector2> pts = { xf.xform(Vector2(arrow_size, 0)), xf.xform(Vector2(0, 0.5 * arrow_size)), xf.xform(Vector2(0, -0.5 * arrow_size)) }; Vector<Color> cols = { draw_col, draw_col, draw_col }; draw_primitive(pts, cols, Vector<Vector2>()); } #endif } break; case NOTIFICATION_INTERNAL_PHYSICS_PROCESS: { if (!enabled) { break; } _update_shapecast_state(); } break; } } void ShapeCast2D::_update_shapecast_state() { result.clear(); ERR_FAIL_COND_MSG(shape.is_null(), "Invalid shape."); Ref<World2D> w2d = get_world_2d(); ERR_FAIL_COND(w2d.is_null()); PhysicsDirectSpaceState2D *dss = PhysicsServer2D::get_singleton()->space_get_direct_state(w2d->get_space()); ERR_FAIL_COND(!dss); Transform2D gt = get_global_transform(); PhysicsDirectSpaceState2D::ShapeParameters params; params.shape_rid = shape_rid; params.transform = gt; params.motion = gt.basis_xform(target_position); params.margin = margin; params.exclude = exclude; params.collision_mask = collision_mask; params.collide_with_bodies = collide_with_bodies; params.collide_with_areas = collide_with_areas; collision_safe_fraction = 0.0; collision_unsafe_fraction = 0.0; bool prev_collision_state = collided; if (target_position != Vector2()) { dss->cast_motion(params, collision_safe_fraction, collision_unsafe_fraction); if (collision_unsafe_fraction < 1.0) { // Move shape transform to the point of impact, // so we can collect contact info at that point. gt.set_origin(gt.get_origin() + params.motion * (collision_unsafe_fraction + CMP_EPSILON)); params.transform = gt; } } // Regardless of whether the shape is stuck or it's moved along // the motion vector, we'll only consider static collisions from now on. params.motion = Vector2(); bool intersected = true; while (intersected && result.size() < max_results) { PhysicsDirectSpaceState2D::ShapeRestInfo info; intersected = dss->rest_info(params, &info); if (intersected) { result.push_back(info); params.exclude.insert(info.rid); } } collided = !result.is_empty(); if (prev_collision_state != collided) { queue_redraw(); } } void ShapeCast2D::force_shapecast_update() { _update_shapecast_state(); } void ShapeCast2D::add_exception_rid(const RID &p_rid) { exclude.insert(p_rid); } void ShapeCast2D::add_exception(const CollisionObject2D *p_node) { ERR_FAIL_NULL_MSG(p_node, "The passed Node must be an instance of CollisionObject2D."); add_exception_rid(p_node->get_rid()); } void ShapeCast2D::remove_exception_rid(const RID &p_rid) { exclude.erase(p_rid); } void ShapeCast2D::remove_exception(const CollisionObject2D *p_node) { ERR_FAIL_NULL_MSG(p_node, "The passed Node must be an instance of CollisionObject2D."); remove_exception_rid(p_node->get_rid()); } void ShapeCast2D::clear_exceptions() { exclude.clear(); } void ShapeCast2D::set_collide_with_areas(bool p_clip) { collide_with_areas = p_clip; } bool ShapeCast2D::is_collide_with_areas_enabled() const { return collide_with_areas; } void ShapeCast2D::set_collide_with_bodies(bool p_clip) { collide_with_bodies = p_clip; } bool ShapeCast2D::is_collide_with_bodies_enabled() const { return collide_with_bodies; } Array ShapeCast2D::_get_collision_result() const { Array ret; for (int i = 0; i < result.size(); ++i) { const PhysicsDirectSpaceState2D::ShapeRestInfo &sri = result[i]; Dictionary col; col["point"] = sri.point; col["normal"] = sri.normal; col["rid"] = sri.rid; col["collider"] = ObjectDB::get_instance(sri.collider_id); col["collider_id"] = sri.collider_id; col["shape"] = sri.shape; col["linear_velocity"] = sri.linear_velocity; ret.push_back(col); } return ret; } PackedStringArray ShapeCast2D::get_configuration_warnings() const { PackedStringArray warnings = Node2D::get_configuration_warnings(); if (shape.is_null()) { warnings.push_back(RTR("This node cannot interact with other objects unless a Shape2D is assigned.")); } return warnings; } void ShapeCast2D::_bind_methods() { ClassDB::bind_method(D_METHOD("set_enabled", "enabled"), &ShapeCast2D::set_enabled); ClassDB::bind_method(D_METHOD("is_enabled"), &ShapeCast2D::is_enabled); ClassDB::bind_method(D_METHOD("set_shape", "shape"), &ShapeCast2D::set_shape); ClassDB::bind_method(D_METHOD("get_shape"), &ShapeCast2D::get_shape); ClassDB::bind_method(D_METHOD("set_target_position", "local_point"), &ShapeCast2D::set_target_position); ClassDB::bind_method(D_METHOD("get_target_position"), &ShapeCast2D::get_target_position); ClassDB::bind_method(D_METHOD("set_margin", "margin"), &ShapeCast2D::set_margin); ClassDB::bind_method(D_METHOD("get_margin"), &ShapeCast2D::get_margin); ClassDB::bind_method(D_METHOD("set_max_results", "max_results"), &ShapeCast2D::set_max_results); ClassDB::bind_method(D_METHOD("get_max_results"), &ShapeCast2D::get_max_results); ClassDB::bind_method(D_METHOD("is_colliding"), &ShapeCast2D::is_colliding); ClassDB::bind_method(D_METHOD("get_collision_count"), &ShapeCast2D::get_collision_count); ClassDB::bind_method(D_METHOD("force_shapecast_update"), &ShapeCast2D::force_shapecast_update); ClassDB::bind_method(D_METHOD("get_collider", "index"), &ShapeCast2D::get_collider); ClassDB::bind_method(D_METHOD("get_collider_rid", "index"), &ShapeCast2D::get_collider_rid); ClassDB::bind_method(D_METHOD("get_collider_shape", "index"), &ShapeCast2D::get_collider_shape); ClassDB::bind_method(D_METHOD("get_collision_point", "index"), &ShapeCast2D::get_collision_point); ClassDB::bind_method(D_METHOD("get_collision_normal", "index"), &ShapeCast2D::get_collision_normal); ClassDB::bind_method(D_METHOD("get_closest_collision_safe_fraction"), &ShapeCast2D::get_closest_collision_safe_fraction); ClassDB::bind_method(D_METHOD("get_closest_collision_unsafe_fraction"), &ShapeCast2D::get_closest_collision_unsafe_fraction); ClassDB::bind_method(D_METHOD("add_exception_rid", "rid"), &ShapeCast2D::add_exception_rid); ClassDB::bind_method(D_METHOD("add_exception", "node"), &ShapeCast2D::add_exception); ClassDB::bind_method(D_METHOD("remove_exception_rid", "rid"), &ShapeCast2D::remove_exception_rid); ClassDB::bind_method(D_METHOD("remove_exception", "node"), &ShapeCast2D::remove_exception); ClassDB::bind_method(D_METHOD("clear_exceptions"), &ShapeCast2D::clear_exceptions); ClassDB::bind_method(D_METHOD("set_collision_mask", "mask"), &ShapeCast2D::set_collision_mask); ClassDB::bind_method(D_METHOD("get_collision_mask"), &ShapeCast2D::get_collision_mask); ClassDB::bind_method(D_METHOD("set_collision_mask_value", "layer_number", "value"), &ShapeCast2D::set_collision_mask_value); ClassDB::bind_method(D_METHOD("get_collision_mask_value", "layer_number"), &ShapeCast2D::get_collision_mask_value); ClassDB::bind_method(D_METHOD("set_exclude_parent_body", "mask"), &ShapeCast2D::set_exclude_parent_body); ClassDB::bind_method(D_METHOD("get_exclude_parent_body"), &ShapeCast2D::get_exclude_parent_body); ClassDB::bind_method(D_METHOD("set_collide_with_areas", "enable"), &ShapeCast2D::set_collide_with_areas); ClassDB::bind_method(D_METHOD("is_collide_with_areas_enabled"), &ShapeCast2D::is_collide_with_areas_enabled); ClassDB::bind_method(D_METHOD("set_collide_with_bodies", "enable"), &ShapeCast2D::set_collide_with_bodies); ClassDB::bind_method(D_METHOD("is_collide_with_bodies_enabled"), &ShapeCast2D::is_collide_with_bodies_enabled); ClassDB::bind_method(D_METHOD("_get_collision_result"), &ShapeCast2D::_get_collision_result); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "enabled"), "set_enabled", "is_enabled"); ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "shape", PROPERTY_HINT_RESOURCE_TYPE, "Shape2D"), "set_shape", "get_shape"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "exclude_parent"), "set_exclude_parent_body", "get_exclude_parent_body"); ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "target_position", PROPERTY_HINT_NONE, "suffix:px"), "set_target_position", "get_target_position"); ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "margin", PROPERTY_HINT_RANGE, "0,100,0.01,suffix:px"), "set_margin", "get_margin"); ADD_PROPERTY(PropertyInfo(Variant::INT, "max_results"), "set_max_results", "get_max_results"); ADD_PROPERTY(PropertyInfo(Variant::INT, "collision_mask", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_collision_mask", "get_collision_mask"); ADD_PROPERTY(PropertyInfo(Variant::ARRAY, "collision_result", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "", "_get_collision_result"); ADD_GROUP("Collide With", "collide_with"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collide_with_areas", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collide_with_areas", "is_collide_with_areas_enabled"); ADD_PROPERTY(PropertyInfo(Variant::BOOL, "collide_with_bodies", PROPERTY_HINT_LAYERS_3D_PHYSICS), "set_collide_with_bodies", "is_collide_with_bodies_enabled"); } ShapeCast2D::ShapeCast2D() { set_hide_clip_children(true); }