|
|
@@ -0,0 +1,358 @@
|
|
|
+//
|
|
|
+// Copyright (c) 2008-2013 the Urho3D project.
|
|
|
+//
|
|
|
+// 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 "Camera.h"
|
|
|
+#include "CoreEvents.h"
|
|
|
+#include "Cursor.h"
|
|
|
+#include "DebugRenderer.h"
|
|
|
+#include "Engine.h"
|
|
|
+#include "Font.h"
|
|
|
+#include "Graphics.h"
|
|
|
+#include "Input.h"
|
|
|
+#include "Light.h"
|
|
|
+#include "Material.h"
|
|
|
+#include "Model.h"
|
|
|
+#include "Navigable.h"
|
|
|
+#include "NavigationMesh.h"
|
|
|
+#include "Octree.h"
|
|
|
+#include "Renderer.h"
|
|
|
+#include "ResourceCache.h"
|
|
|
+#include "StaticModel.h"
|
|
|
+#include "Text.h"
|
|
|
+#include "UI.h"
|
|
|
+#include "XMLFile.h"
|
|
|
+#include "Zone.h"
|
|
|
+
|
|
|
+#include "Navigation.h"
|
|
|
+
|
|
|
+#include "DebugNew.h"
|
|
|
+
|
|
|
+// Expands to this example's entry-point
|
|
|
+DEFINE_APPLICATION_MAIN(Navigation)
|
|
|
+
|
|
|
+Navigation::Navigation(Context* context) :
|
|
|
+ Sample(context),
|
|
|
+ yaw_(0.0f),
|
|
|
+ pitch_(0.0f),
|
|
|
+ drawDebug_(false)
|
|
|
+{
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::Start()
|
|
|
+{
|
|
|
+ // Execute base class startup
|
|
|
+ Sample::Start();
|
|
|
+
|
|
|
+ // Create the scene content
|
|
|
+ CreateScene();
|
|
|
+
|
|
|
+ // Create the UI content
|
|
|
+ CreateUI();
|
|
|
+
|
|
|
+ // Setup the viewport for displaying the scene
|
|
|
+ SetupViewport();
|
|
|
+
|
|
|
+ // Hook up to the frame update and render post-update events
|
|
|
+ SubscribeToEvents();
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::CreateScene()
|
|
|
+{
|
|
|
+ ResourceCache* cache = GetSubsystem<ResourceCache>();
|
|
|
+
|
|
|
+ scene_ = new Scene(context_);
|
|
|
+
|
|
|
+ // Create octree, use default volume (-1000, -1000, -1000) to (1000, 1000, 1000)
|
|
|
+ // Also create a DebugRenderer component so that we can draw debug geometry
|
|
|
+ scene_->CreateComponent<Octree>();
|
|
|
+ scene_->CreateComponent<DebugRenderer>();
|
|
|
+
|
|
|
+ // Create scene node & StaticModel component for showing a static plane
|
|
|
+ Node* planeNode = scene_->CreateChild("Plane");
|
|
|
+ planeNode->SetScale(Vector3(100.0f, 1.0f, 100.0f));
|
|
|
+ StaticModel* planeObject = planeNode->CreateComponent<StaticModel>();
|
|
|
+ planeObject->SetModel(cache->GetResource<Model>("Models/Plane.mdl"));
|
|
|
+ planeObject->SetMaterial(cache->GetResource<Material>("Materials/StoneTiled.xml"));
|
|
|
+
|
|
|
+ // Create a Zone component for ambient lighting & fog control
|
|
|
+ Node* zoneNode = scene_->CreateChild("Zone");
|
|
|
+ Zone* zone = zoneNode->CreateComponent<Zone>();
|
|
|
+ zone->SetBoundingBox(BoundingBox(-1000.0f, 1000.0f));
|
|
|
+ zone->SetAmbientColor(Color(0.15f, 0.15f, 0.15f));
|
|
|
+ zone->SetFogColor(Color(0.5f, 0.5f, 0.7f));
|
|
|
+ zone->SetFogStart(100.0f);
|
|
|
+ zone->SetFogEnd(300.0f);
|
|
|
+
|
|
|
+ // Create a directional light to the world. Enable cascaded shadows on it
|
|
|
+ Node* lightNode = scene_->CreateChild("DirectionalLight");
|
|
|
+ lightNode->SetDirection(Vector3(0.6f, -1.0f, 0.8f));
|
|
|
+ Light* light = lightNode->CreateComponent<Light>();
|
|
|
+ light->SetLightType(LIGHT_DIRECTIONAL);
|
|
|
+ light->SetCastShadows(true);
|
|
|
+ light->SetShadowBias(BiasParameters(0.0001f, 0.5f));
|
|
|
+ // Set cascade splits at 10, 50 and 200 world units, fade shadows out at 80% of maximum shadow distance
|
|
|
+ light->SetShadowCascade(CascadeParameters(10.0f, 50.0f, 200.0f, 0.0f, 0.8f));
|
|
|
+
|
|
|
+ // Create some mushrooms
|
|
|
+ const unsigned NUM_MUSHROOMS = 100;
|
|
|
+ for (unsigned i = 0; i < NUM_MUSHROOMS; ++i)
|
|
|
+ {
|
|
|
+ Node* mushroomNode = scene_->CreateChild("Mushroom");
|
|
|
+ mushroomNode->SetPosition(Vector3(Random(90.0f) - 45.0f, 0.0f, Random(90.0f) - 45.0f));
|
|
|
+ mushroomNode->SetRotation(Quaternion(0.0f, Random(360.0f), 0.0f));
|
|
|
+ mushroomNode->SetScale(2.0f + Random(0.5f));
|
|
|
+ StaticModel* mushroomObject = mushroomNode->CreateComponent<StaticModel>();
|
|
|
+ mushroomObject->SetModel(cache->GetResource<Model>("Models/Mushroom.mdl"));
|
|
|
+ mushroomObject->SetMaterial(cache->GetResource<Material>("Materials/Mushroom.xml"));
|
|
|
+ mushroomObject->SetCastShadows(true);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create randomly sized boxes. If boxes are big enough, make them occluders
|
|
|
+ const unsigned NUM_BOXES = 20;
|
|
|
+ for (unsigned i = 0; i < NUM_BOXES; ++i)
|
|
|
+ {
|
|
|
+ Node* boxNode = scene_->CreateChild("Box");
|
|
|
+ float size = 1.0f + Random(10.0f);
|
|
|
+ boxNode->SetPosition(Vector3(Random(80.0f) - 40.0f, size * 0.5f, Random(80.0f) - 40.0f));
|
|
|
+ boxNode->SetScale(size);
|
|
|
+ StaticModel* boxObject = boxNode->CreateComponent<StaticModel>();
|
|
|
+ boxObject->SetModel(cache->GetResource<Model>("Models/Box.mdl"));
|
|
|
+ boxObject->SetMaterial(cache->GetResource<Material>("Materials/Stone.xml"));
|
|
|
+ boxObject->SetCastShadows(true);
|
|
|
+ if (size >= 3.0f)
|
|
|
+ boxObject->SetOccluder(true);
|
|
|
+ }
|
|
|
+
|
|
|
+ // Create a NavigationMesh component to the scene root
|
|
|
+ NavigationMesh* navMesh = scene_->CreateComponent<NavigationMesh>();
|
|
|
+ // Create a Navigable component to the scene root. This tags all of the geometry in the scene as being part of the
|
|
|
+ // navigation mesh. By default this is recursive, but the recursion could be turned off from Navigable
|
|
|
+ scene_->CreateComponent<Navigable>();
|
|
|
+ // Add padding to the navigation mesh in Y-direction so that we can add objects on top of the tallest boxes
|
|
|
+ // in the scene and still update the mesh correctly
|
|
|
+ navMesh->SetPadding(Vector3(0.0f, 10.0f, 0.0f));
|
|
|
+ // Now build the navigation geometry. This will take some time. Note that the navigation mesh will prefer to use
|
|
|
+ // physics geometry from the scene nodes, as it often is simpler, but if it can not find any (like in this example)
|
|
|
+ // it will use renderable geometry instead
|
|
|
+ navMesh->Build();
|
|
|
+
|
|
|
+ // Create the camera. Limit far clip distance to match the fog
|
|
|
+ cameraNode_ = scene_->CreateChild("Camera");
|
|
|
+ Camera* camera = cameraNode_->CreateComponent<Camera>();
|
|
|
+ camera->SetFarClip(300.0f);
|
|
|
+
|
|
|
+ // Set an initial position for the camera scene node above the plane
|
|
|
+ cameraNode_->SetPosition(Vector3(0.0f, 5.0f, 0.0f));
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::CreateUI()
|
|
|
+{
|
|
|
+ ResourceCache* cache = GetSubsystem<ResourceCache>();
|
|
|
+ UI* ui = GetSubsystem<UI>();
|
|
|
+
|
|
|
+ // Create a Cursor UI element because we want to be able to hide and show it at will. When hidden, the mouse cursor will
|
|
|
+ // control the camera, and when visible, it will point the raycast target
|
|
|
+ XMLFile* style = cache->GetResource<XMLFile>("UI/DefaultStyle.xml");
|
|
|
+ SharedPtr<Cursor> cursor(new Cursor(context_));
|
|
|
+ cursor->SetStyleAuto(style);
|
|
|
+ ui->SetCursor(cursor);
|
|
|
+
|
|
|
+ // Set starting position of the cursor at the rendering window center
|
|
|
+ Graphics* graphics = GetSubsystem<Graphics>();
|
|
|
+ cursor->SetPosition(graphics->GetWidth() / 2, graphics->GetHeight() / 2);
|
|
|
+
|
|
|
+ // Construct new Text object, set string to display and font to use
|
|
|
+ Text* instructionText = ui->GetRoot()->CreateChild<Text>();
|
|
|
+ instructionText->SetText(
|
|
|
+ "Use WASD keys to move, RMB to rotate view\n"
|
|
|
+ "Shift+LMB to set path start, LMB to set path end\n"
|
|
|
+ "Space to toggle debug geometry"
|
|
|
+ );
|
|
|
+ instructionText->SetFont(cache->GetResource<Font>("Fonts/Anonymous Pro.ttf"), 15);
|
|
|
+ // The text has multiple rows. Center them in relation to each other
|
|
|
+ instructionText->SetTextAlignment(HA_CENTER);
|
|
|
+
|
|
|
+ // Position the text relative to the screen center
|
|
|
+ instructionText->SetHorizontalAlignment(HA_CENTER);
|
|
|
+ instructionText->SetVerticalAlignment(VA_CENTER);
|
|
|
+ instructionText->SetPosition(0, ui->GetRoot()->GetHeight() / 4);
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::SetupViewport()
|
|
|
+{
|
|
|
+ Renderer* renderer = GetSubsystem<Renderer>();
|
|
|
+
|
|
|
+ // Set up a viewport to the Renderer subsystem so that the 3D scene can be seen
|
|
|
+ SharedPtr<Viewport> viewport(new Viewport(context_, scene_, cameraNode_->GetComponent<Camera>()));
|
|
|
+ renderer->SetViewport(0, viewport);
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::MoveCamera(float timeStep)
|
|
|
+{
|
|
|
+ // Right mouse button controls mouse cursor visibility: hide when pressed
|
|
|
+ UI* ui = GetSubsystem<UI>();
|
|
|
+ Input* input = GetSubsystem<Input>();
|
|
|
+ ui->GetCursor()->SetVisible(!input->GetMouseButtonDown(MOUSEB_RIGHT));
|
|
|
+
|
|
|
+ // Do not move if the UI has a focused element (the console)
|
|
|
+ if (ui->GetFocusElement())
|
|
|
+ return;
|
|
|
+
|
|
|
+ // Movement speed as world units per second
|
|
|
+ const float MOVE_SPEED = 20.0f;
|
|
|
+ // Mouse sensitivity as degrees per pixel
|
|
|
+ const float MOUSE_SENSITIVITY = 0.1f;
|
|
|
+
|
|
|
+ // Use this frame's mouse motion to adjust camera node yaw and pitch. Clamp the pitch between -90 and 90 degrees
|
|
|
+ // Only move the camera when the cursor is hidden
|
|
|
+ if (!ui->GetCursor()->IsVisible())
|
|
|
+ {
|
|
|
+ IntVector2 mouseMove = input->GetMouseMove();
|
|
|
+ yaw_ += MOUSE_SENSITIVITY * mouseMove.x_;
|
|
|
+ pitch_ += MOUSE_SENSITIVITY * mouseMove.y_;
|
|
|
+ pitch_ = Clamp(pitch_, -90.0f, 90.0f);
|
|
|
+
|
|
|
+ // Construct new orientation for the camera scene node from yaw and pitch. Roll is fixed to zero
|
|
|
+ cameraNode_->SetRotation(Quaternion(pitch_, yaw_, 0.0f));
|
|
|
+ }
|
|
|
+
|
|
|
+ // Read WASD keys and move the camera scene node to the corresponding direction if they are pressed
|
|
|
+ if (input->GetKeyDown('W'))
|
|
|
+ cameraNode_->TranslateRelative(Vector3::FORWARD * MOVE_SPEED * timeStep);
|
|
|
+ if (input->GetKeyDown('S'))
|
|
|
+ cameraNode_->TranslateRelative(Vector3::BACK * MOVE_SPEED * timeStep);
|
|
|
+ if (input->GetKeyDown('A'))
|
|
|
+ cameraNode_->TranslateRelative(Vector3::LEFT * MOVE_SPEED * timeStep);
|
|
|
+ if (input->GetKeyDown('D'))
|
|
|
+ cameraNode_->TranslateRelative(Vector3::RIGHT * MOVE_SPEED * timeStep);
|
|
|
+
|
|
|
+ // Set route start/endpoint, calculate route if applicable
|
|
|
+ if (input->GetMouseButtonPress(MOUSEB_LEFT))
|
|
|
+ {
|
|
|
+ Vector3 hitPos;
|
|
|
+ Node* hitNode;
|
|
|
+ Drawable* hitDrawable;
|
|
|
+
|
|
|
+ if (Raycast(250.0f, hitPos, hitNode, hitDrawable))
|
|
|
+ {
|
|
|
+ bool setStart = input->GetQualifierDown(QUAL_SHIFT);
|
|
|
+ if (setStart)
|
|
|
+ {
|
|
|
+ startPos_ = hitPos;
|
|
|
+ startPosDefined_ = true;
|
|
|
+ }
|
|
|
+ else
|
|
|
+ {
|
|
|
+ endPos_ = hitPos;
|
|
|
+ endPosDefined_ = true;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (startPosDefined_ && endPosDefined_)
|
|
|
+ RecalculatePath();
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // Toggle debug geometry with space
|
|
|
+ if (input->GetKeyPress(KEY_SPACE))
|
|
|
+ drawDebug_ = !drawDebug_;
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::SubscribeToEvents()
|
|
|
+{
|
|
|
+ // Subscribes HandleUpdate() method for processing update events
|
|
|
+ SubscribeToEvent(E_UPDATE, HANDLER(Navigation, HandleUpdate));
|
|
|
+
|
|
|
+ // Subscribes HandlePostRenderUpdate() method for processing the post-render update event, during which we request
|
|
|
+ // debug geometry
|
|
|
+ SubscribeToEvent(E_POSTRENDERUPDATE, HANDLER(Navigation, HandlePostRenderUpdate));
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::RecalculatePath()
|
|
|
+{
|
|
|
+ NavigationMesh* navMesh = scene_->GetComponent<NavigationMesh>();
|
|
|
+ navMesh->FindPath(currentPath_, startPos_, endPos_);
|
|
|
+}
|
|
|
+
|
|
|
+bool Navigation::Raycast(float maxDistance, Vector3& hitPos, Node*& hitNode, Drawable*& hitDrawable)
|
|
|
+{
|
|
|
+ hitNode = 0;
|
|
|
+ hitDrawable = 0;
|
|
|
+
|
|
|
+ UI* ui = GetSubsystem<UI>();
|
|
|
+ IntVector2 pos = ui->GetCursorPosition();
|
|
|
+ // Check the cursor is visible and there is no UI element in front of the cursor
|
|
|
+ if (!ui->GetCursor()->IsVisible() || ui->GetElementAt(pos, true))
|
|
|
+ return false;
|
|
|
+
|
|
|
+ Graphics* graphics = GetSubsystem<Graphics>();
|
|
|
+ Camera* camera = cameraNode_->GetComponent<Camera>();
|
|
|
+ Ray cameraRay = camera->GetScreenRay((float)pos.x_ / graphics->GetWidth(), (float)pos.y_ / graphics->GetHeight());
|
|
|
+ // Pick only geometry objects, not eg. zones or lights, only get the first (closest) hit
|
|
|
+ PODVector<RayQueryResult> results;
|
|
|
+ RayOctreeQuery query(results, cameraRay, RAY_TRIANGLE, maxDistance, DRAWABLE_GEOMETRY);
|
|
|
+ scene_->GetComponent<Octree>()->RaycastSingle(query);
|
|
|
+ if (results.Size())
|
|
|
+ {
|
|
|
+ RayQueryResult& result = results[0];
|
|
|
+
|
|
|
+ // Calculate hit position in world space
|
|
|
+ hitPos = cameraRay.origin_ + cameraRay.direction_ * result.distance_;
|
|
|
+ hitNode = result.drawable_->GetNode();
|
|
|
+ hitDrawable = result.drawable_;
|
|
|
+ return true;
|
|
|
+ }
|
|
|
+
|
|
|
+ return false;
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::HandleUpdate(StringHash eventType, VariantMap& eventData)
|
|
|
+{
|
|
|
+ // Event parameters are always defined inside a namespace corresponding to the event's name
|
|
|
+ using namespace Update;
|
|
|
+
|
|
|
+ // Take the frame time step, which is stored as a float
|
|
|
+ float timeStep = eventData[P_TIMESTEP].GetFloat();
|
|
|
+
|
|
|
+ // Move the camera, scale movement with time step
|
|
|
+ MoveCamera(timeStep);
|
|
|
+}
|
|
|
+
|
|
|
+void Navigation::HandlePostRenderUpdate(StringHash eventType, VariantMap& eventData)
|
|
|
+{
|
|
|
+ // If draw debug mode is enabled, draw navigation mesh debug geometry
|
|
|
+ if (drawDebug_)
|
|
|
+ scene_->GetComponent<NavigationMesh>()->DrawDebugGeometry(true);
|
|
|
+
|
|
|
+ // Visualize the start and end points and the last calculated path
|
|
|
+ DebugRenderer* debug = scene_->GetComponent<DebugRenderer>();
|
|
|
+ if (startPosDefined_)
|
|
|
+ debug->AddBoundingBox(BoundingBox(startPos_ - 0.1f * Vector3::ONE, startPos_ + 0.1f * Vector3::ONE), Color::WHITE);
|
|
|
+ if (endPosDefined_)
|
|
|
+ debug->AddBoundingBox(BoundingBox(endPos_ - 0.1f * Vector3::ONE, endPos_ + 0.1f * Vector3::ONE), Color::WHITE);
|
|
|
+ if (currentPath_.Size() > 1)
|
|
|
+ {
|
|
|
+ // Draw the path with a small upward bias so that it does not clip into the surfaces
|
|
|
+ Vector3 bias = 0.05f * Vector3::UP;
|
|
|
+ for (unsigned i = 0; i < currentPath_.Size() - 1; ++i)
|
|
|
+ debug->AddLine(currentPath_[i] + bias, currentPath_[i + 1] + bias, Color::WHITE);
|
|
|
+ }
|
|
|
+}
|
Lasse Öörni