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virtualx-engine/tools/editor/plugins/navigation_polygon_editor_plugin.cpp
Juan Linietsky c5f509f238 New Navigation & Pathfinding support for 2D 
-Added Navigation & NavigationPolygon nodes
-Added corresponding visual editor
-New pathfinding algorithm is modern and fast!
-Similar API to 3D Pathfinding (more coherent)
2015-02-14 12:10:15 -03:00

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#include "navigation_polygon_editor_plugin.h"
#include "canvas_item_editor_plugin.h"
#include "os/file_access.h"
#include "tools/editor/editor_settings.h"
void NavigationPolygonEditor::_notification(int p_what) {
switch(p_what) {
case NOTIFICATION_READY: {
button_create->set_icon( get_icon("Edit","EditorIcons"));
button_edit->set_icon( get_icon("MovePoint","EditorIcons"));
button_edit->set_pressed(true);
get_tree()->connect("node_removed",this,"_node_removed");
create_nav->connect("confirmed",this,"_create_nav");
} break;
case NOTIFICATION_FIXED_PROCESS: {
} break;
}
}
void NavigationPolygonEditor::_node_removed(Node *p_node) {
if(p_node==node) {
node=NULL;
hide();
canvas_item_editor->get_viewport_control()->update();
}
}
void NavigationPolygonEditor::_create_nav() {
undo_redo->create_action("Create Navigation Polygon");
undo_redo->add_do_method(node,"set_navigation_polygon",Ref<NavigationPolygon>(memnew( NavigationPolygon)));
undo_redo->add_undo_method(node,"set_navigation_polygon",Variant(REF()));
undo_redo->commit_action();
}
Vector2 NavigationPolygonEditor::snap_point(const Vector2& p_point) const {
if (canvas_item_editor->is_snap_active()) {
return p_point.snapped(Vector2(1,1)*canvas_item_editor->get_snap());
} else {
return p_point;
}
}
void NavigationPolygonEditor::_menu_option(int p_option) {
switch(p_option) {
case MODE_CREATE: {
mode=MODE_CREATE;
button_create->set_pressed(true);
button_edit->set_pressed(false);
} break;
case MODE_EDIT: {
mode=MODE_EDIT;
button_create->set_pressed(false);
button_edit->set_pressed(true);
} break;
}
}
void NavigationPolygonEditor::_wip_close() {
if (wip.size()>=3) {
undo_redo->create_action("Create Poly");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"remove_outline",node->get_navigation_polygon()->get_outline_count());
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"add_outline",wip);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->commit_action();
mode=MODE_EDIT;
button_edit->set_pressed(true);
button_create->set_pressed(false);
}
wip.clear();
wip_active=false;
edited_point=-1;
}
bool NavigationPolygonEditor::forward_input_event(const InputEvent& p_event) {
if (!node)
return false;
if (node->get_navigation_polygon().is_null()) {
if (p_event.type==InputEvent::MOUSE_BUTTON && p_event.mouse_button.button_index==1 && p_event.mouse_button.pressed) {
create_nav->set_text("No NavigationPolygon resource on this node.\nCreate and assign one?");
create_nav->popup_centered_minsize();
}
return false;
}
switch(p_event.type) {
case InputEvent::MOUSE_BUTTON: {
const InputEventMouseButton &mb=p_event.mouse_button;
Matrix32 xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Vector2 gpoint = Point2(mb.x,mb.y);
Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
cpoint=snap_point(cpoint);
cpoint = node->get_global_transform().affine_inverse().xform(cpoint);
//first check if a point is to be added (segment split)
real_t grab_treshold=EDITOR_DEF("poly_editor/point_grab_radius",8);
switch(mode) {
case MODE_CREATE: {
if (mb.button_index==BUTTON_LEFT && mb.pressed) {
if (!wip_active) {
wip.clear();
wip.push_back( cpoint );
wip_active=true;
edited_point_pos=cpoint;
edited_outline=-1;
canvas_item_editor->get_viewport_control()->update();
edited_point=1;
return true;
} else {
if (wip.size()>1 && xform.xform(wip[0]).distance_to(gpoint)<grab_treshold) {
//wip closed
_wip_close();
return true;
} else {
wip.push_back( cpoint );
edited_point=wip.size();
canvas_item_editor->get_viewport_control()->update();
return true;
//add wip point
}
}
} else if (mb.button_index==BUTTON_RIGHT && mb.pressed && wip_active) {
_wip_close();
}
} break;
case MODE_EDIT: {
if (mb.button_index==BUTTON_LEFT) {
if (mb.pressed) {
if (mb.mod.control) {
//search edges
int closest_outline=-1;
int closest_idx=-1;
Vector2 closest_pos;
real_t closest_dist=1e10;
for(int j=0;j<node->get_navigation_polygon()->get_outline_count();j++) {
DVector<Vector2> points=node->get_navigation_polygon()->get_outline(j);
int pc=points.size();
DVector<Vector2>::Read poly=points.read();
for(int i=0;i<pc;i++) {
Vector2 points[2] ={ xform.xform(poly[i]),
xform.xform(poly[(i+1)%pc]) };
Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint,points);
if (cp.distance_squared_to(points[0])<CMP_EPSILON2 || cp.distance_squared_to(points[1])<CMP_EPSILON2)
continue; //not valid to reuse point
real_t d = cp.distance_to(gpoint);
if (d<closest_dist && d<grab_treshold) {
closest_dist=d;
closest_outline=j;
closest_pos=cp;
closest_idx=i;
}
}
}
if (closest_idx>=0) {
pre_move_edit=node->get_navigation_polygon()->get_outline(closest_outline);
DVector<Point2> poly = pre_move_edit;
poly.insert(closest_idx+1,xform.affine_inverse().xform(closest_pos));
edited_point=closest_idx+1;
edited_outline=closest_outline;
edited_point_pos=xform.affine_inverse().xform(closest_pos);
node->get_navigation_polygon()->set_outline(closest_outline,poly);
canvas_item_editor->get_viewport_control()->update();
return true;
}
} else {
//look for points to move
int closest_outline=-1;
int closest_idx=-1;
Vector2 closest_pos;
real_t closest_dist=1e10;
for(int j=0;j<node->get_navigation_polygon()->get_outline_count();j++) {
DVector<Vector2> points=node->get_navigation_polygon()->get_outline(j);
int pc=points.size();
DVector<Vector2>::Read poly=points.read();
for(int i=0;i<pc;i++) {
Vector2 cp =xform.xform(poly[i]);
real_t d = cp.distance_to(gpoint);
if (d<closest_dist && d<grab_treshold) {
closest_dist=d;
closest_pos=cp;
closest_outline=j;
closest_idx=i;
}
}
}
if (closest_idx>=0) {
pre_move_edit=node->get_navigation_polygon()->get_outline(closest_outline);
edited_point=closest_idx;
edited_outline=closest_outline;
edited_point_pos=xform.affine_inverse().xform(closest_pos);
canvas_item_editor->get_viewport_control()->update();
return true;
}
}
} else {
if (edited_point!=-1) {
//apply
DVector<Vector2> poly = node->get_navigation_polygon()->get_outline(edited_outline);
ERR_FAIL_INDEX_V(edited_point,poly.size(),false);
poly.set(edited_point,edited_point_pos);
undo_redo->create_action("Edit Poly");
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"set_outline",edited_outline,poly);
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"set_outline",edited_outline,pre_move_edit);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->commit_action();
edited_point=-1;
return true;
}
}
} if (mb.button_index==BUTTON_RIGHT && mb.pressed && edited_point==-1) {
int closest_outline=-1;
int closest_idx=-1;
Vector2 closest_pos;
real_t closest_dist=1e10;
for(int j=0;j<node->get_navigation_polygon()->get_outline_count();j++) {
DVector<Vector2> points=node->get_navigation_polygon()->get_outline(j);
int pc=points.size();
DVector<Vector2>::Read poly=points.read();
for(int i=0;i<pc;i++) {
Vector2 cp =xform.xform(poly[i]);
real_t d = cp.distance_to(gpoint);
if (d<closest_dist && d<grab_treshold) {
closest_dist=d;
closest_pos=cp;
closest_outline=j;
closest_idx=i;
}
}
}
if (closest_idx>=0) {
DVector<Vector2> poly = node->get_navigation_polygon()->get_outline(closest_outline);
if (poly.size()>3) {
undo_redo->create_action("Edit Poly (Remove Point)");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"set_outline",closest_outline,poly);
poly.remove(closest_idx);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"set_outline",closest_outline,poly);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->commit_action();
} else {
undo_redo->create_action("Remove Poly And Point");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"add_outline_at_index",poly,closest_outline);
poly.remove(closest_idx);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"remove_outline",closest_outline);
undo_redo->add_do_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_undo_method(node->get_navigation_polygon().ptr(),"make_polygons_from_outlines");
undo_redo->add_do_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(),"update");
undo_redo->commit_action();
}
return true;
}
}
} break;
}
} break;
case InputEvent::MOUSE_MOTION: {
const InputEventMouseMotion &mm=p_event.mouse_motion;
if (edited_point!=-1 && (wip_active || mm.button_mask&BUTTON_MASK_LEFT)) {
Vector2 gpoint = Point2(mm.x,mm.y);
Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
cpoint=snap_point(cpoint);
edited_point_pos = node->get_global_transform().affine_inverse().xform(cpoint);
canvas_item_editor->get_viewport_control()->update();
}
} break;
}
return false;
}
void NavigationPolygonEditor::_canvas_draw() {
if (!node)
return;
Control *vpc = canvas_item_editor->get_viewport_control();
if (node->get_navigation_polygon().is_null())
return;
Matrix32 xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();
Ref<Texture> handle= get_icon("EditorHandle","EditorIcons");
for(int j=-1;j<node->get_navigation_polygon()->get_outline_count();j++) {
Vector<Vector2> poly;
if (wip_active && j==edited_outline) {
poly=wip;
} else {
if (j==-1)
continue;
poly = Variant(node->get_navigation_polygon()->get_outline(j));
}
int len = poly.size();
for(int i=0;i<poly.size();i++) {
Vector2 p,p2;
p = (j==edited_outline && i==edited_point) ? edited_point_pos : poly[i];
if (j==edited_outline && ((wip_active && i==poly.size()-1) || (((i+1)%poly.size())==edited_point)))
p2=edited_point_pos;
else
p2 = poly[(i+1)%poly.size()];
Vector2 point = xform.xform(p);
Vector2 next_point = xform.xform(p2);
Color col=Color(1,0.3,0.1,0.8);
vpc->draw_line(point,next_point,col,2);
vpc->draw_texture(handle,point-handle->get_size()*0.5);
}
}
}
void NavigationPolygonEditor::edit(Node *p_collision_polygon) {
if (!canvas_item_editor) {
canvas_item_editor=CanvasItemEditor::get_singleton();
}
if (p_collision_polygon) {
node=p_collision_polygon->cast_to<NavigationPolygonInstance>();
if (!canvas_item_editor->get_viewport_control()->is_connected("draw",this,"_canvas_draw"))
canvas_item_editor->get_viewport_control()->connect("draw",this,"_canvas_draw");
wip.clear();
wip_active=false;
edited_point=-1;
} else {
node=NULL;
if (canvas_item_editor->get_viewport_control()->is_connected("draw",this,"_canvas_draw"))
canvas_item_editor->get_viewport_control()->disconnect("draw",this,"_canvas_draw");
}
}
void NavigationPolygonEditor::_bind_methods() {
ObjectTypeDB::bind_method(_MD("_menu_option"),&NavigationPolygonEditor::_menu_option);
ObjectTypeDB::bind_method(_MD("_canvas_draw"),&NavigationPolygonEditor::_canvas_draw);
ObjectTypeDB::bind_method(_MD("_node_removed"),&NavigationPolygonEditor::_node_removed);
ObjectTypeDB::bind_method(_MD("_create_nav"),&NavigationPolygonEditor::_create_nav);
}
NavigationPolygonEditor::NavigationPolygonEditor(EditorNode *p_editor) {
canvas_item_editor=NULL;
editor=p_editor;
undo_redo = editor->get_undo_redo();
add_child( memnew( VSeparator ));
button_create = memnew( ToolButton );
add_child(button_create);
button_create->connect("pressed",this,"_menu_option",varray(MODE_CREATE));
button_create->set_toggle_mode(true);
button_create->set_tooltip("Create a new polygon from scratch");
button_edit = memnew( ToolButton );
add_child(button_edit);
button_edit->connect("pressed",this,"_menu_option",varray(MODE_EDIT));
button_edit->set_toggle_mode(true);
button_edit->set_tooltip("Edit existing polygon:\nLMB: Move Point.\nCtrl+LMB: Split Segment.\nRMB: Erase Point.");
create_nav = memnew( ConfirmationDialog );
add_child(create_nav);
create_nav->get_ok()->set_text("Create");
//add_constant_override("separation",0);
#if 0
options = memnew( MenuButton );
add_child(options);
options->set_area_as_parent_rect();
options->set_text("Polygon");
//options->get_popup()->add_item("Parse BBCODE",PARSE_BBCODE);
options->get_popup()->connect("item_pressed", this,"_menu_option");
#endif
mode = MODE_EDIT;
wip_active=false;
edited_outline=-1;
}
void NavigationPolygonEditorPlugin::edit(Object *p_object) {
collision_polygon_editor->edit(p_object->cast_to<Node>());
}
bool NavigationPolygonEditorPlugin::handles(Object *p_object) const {
return p_object->is_type("NavigationPolygonInstance");
}
void NavigationPolygonEditorPlugin::make_visible(bool p_visible) {
if (p_visible) {
collision_polygon_editor->show();
} else {
collision_polygon_editor->hide();
collision_polygon_editor->edit(NULL);
}
}
NavigationPolygonEditorPlugin::NavigationPolygonEditorPlugin(EditorNode *p_node) {
editor=p_node;
collision_polygon_editor = memnew( NavigationPolygonEditor(p_node) );
CanvasItemEditor::get_singleton()->add_control_to_menu_panel(collision_polygon_editor);
collision_polygon_editor->hide();
}
NavigationPolygonEditorPlugin::~NavigationPolygonEditorPlugin()
{
}
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