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animation state handling (stopping/start/pausing/reloading) while editing, add cleanup code to algorithm, path generation and iteration, move gizmos from manager

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This commit is contained in:
Xevion
2020-11-25 11:39:20 -06:00
parent 0fa97de715
commit 6ee263cfac
4 changed files with 187 additions and 19 deletions
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19
Paths/Assets/Scripts/Algorithms/AStar.cs
View File

@@ -1,4 +1,5 @@
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
namespace Algorithms {
@@ -92,5 +93,23 @@ namespace Algorithms {
return _path;
}
/// <summary>
/// Attempts to clean the NodeGrid of all edits made to heuristic values and such, fast.
/// </summary>
public void Cleanup() {
while (_openList.Count > 0) {
Node node = _openList[0];
_openList.RemoveAt(0);
node.Reset();
}
while (_closedList.Count > 0) {
Node node = _closedList[0];
_closedList.RemoveAt(0);
node.Reset();
}
}
}
}

10
Paths/Assets/Scripts/Algorithms/Node.cs
View File

@@ -37,6 +37,16 @@ namespace Algorithms {
Walkable = walkable;
}
/// <summary>
/// Resets this Node back to it's assumed default values.
/// </summary>
public void Reset() {
Parent = null;
DistanceToTarget = null;
Cost = 1;
State = NodeState.None;
}
public override bool Equals(object obj) {
return obj is Node node && Position.Equals(node.Position);
}

9
Paths/Assets/Scripts/Algorithms/NodeGrid.cs
View File

@@ -147,7 +147,7 @@ namespace Algorithms {
}
}
public GridNodeType[,] RenderNodeTypes() {
public GridNodeType[,] RenderNodeTypes(Vector2Int? start = null, Vector2Int? end = null) {
GridNodeType[,] nodeTypeGrid = new GridNodeType[Grid.GetLength(0), Grid.GetLength(1)];
for (int x = 0; x < Grid.GetLength(0); x++) {
@@ -156,6 +156,13 @@ namespace Algorithms {
}
}
// Start / End node addition
if (start.HasValue)
nodeTypeGrid[start.Value.x, start.Value.y] = GridNodeType.Start;
if (end.HasValue)
nodeTypeGrid[end.Value.x, end.Value.y] = GridNodeType.End;
return nodeTypeGrid;
}
}

168
Paths/Assets/Scripts/UIController.cs
View File

@@ -1,5 +1,7 @@
using System;
using System.Collections.Generic;
using Algorithms;
using UnityEditor;
using UnityEngine;
using UnityEngine.UI;
@@ -22,6 +24,7 @@ public enum ClickType {
/// </summary>
public enum AnimationState {
Stopped,
Paused,
Started,
Reloading
}
@@ -31,23 +34,41 @@ public enum AnimationState {
/// All UI elements are referenced and controlled here.
/// </summary>
public class UIController : MonoBehaviour {
// UI & important App references
public Slider progressSlider;
public GridController gridController;
public Manager manager;
// Animation State, Click Management
private Vector2Int _lastClickLocation;
private ClickType _modify;
private AnimationState _animating;
private AnimationState _animationState;
private AnimationState _previousAnimationState;
private bool EditShouldReload =>
_animationState == AnimationState.Started || _animationState == AnimationState.Paused;
// Grid State & Pathfinding
private NodeGrid _grid;
private Vector2Int _start;
private Vector2Int _end;
private IPathfinding _algorithm;
private Stack<Node> _path;
private ChangeController _state;
// Animation speed & indexing
public float clampIncrement;
private float _runtime;
public int CurrentIndex => (int) _runtime;
public float speed;
private void Start() {
_grid = new NodeGrid(gridController.width, gridController.height);
_animating = AnimationState.Stopped;
_animationState = AnimationState.Stopped;
_previousAnimationState = _animationState;
_start = _grid.RandomPosition();
_end = _grid.RandomPosition();
_runtime = 0;
}
private void Update() {
@@ -65,6 +86,8 @@ public class UIController : MonoBehaviour {
Node node = _grid.GetNode(position);
_modify = node.Walkable ? ClickType.Add : ClickType.Remove;
node.Walkable = !node.Walkable;
if (EditShouldReload)
_animationState = AnimationState.Reloading;
}
_lastClickLocation = position;
@@ -79,25 +102,27 @@ public class UIController : MonoBehaviour {
// Note: Wall toggling instantly reloads, but only real start/end node movement reloads.
case ClickType.Add:
node.Walkable = false;
_animating = AnimationState.Reloading;
if (EditShouldReload)
_animationState = AnimationState.Reloading;
break;
case ClickType.Remove:
node.Walkable = true;
_animating = AnimationState.Reloading;
if (EditShouldReload)
_animationState = AnimationState.Reloading;
break;
case ClickType.Start:
if (node.Walkable) {
_start = position;
if (_animating == AnimationState.Started)
_animating = AnimationState.Reloading;
if (EditShouldReload)
_animationState = AnimationState.Reloading;
}
break;
case ClickType.End:
if (node.Walkable) {
_end = position;
if (_animating == AnimationState.Started)
_animating = AnimationState.Reloading;
if (EditShouldReload)
_animationState = AnimationState.Reloading;
}
break;
@@ -108,23 +133,130 @@ public class UIController : MonoBehaviour {
}
}
if (_animating == AnimationState.Reloading) {
}
else if (_animating == AnimationState.Started) {
// Handle user start/stopping
if (Input.GetKeyDown(KeyCode.Space)) {
switch (_animationState) {
case AnimationState.Stopped:
_animationState = AnimationState.Reloading;
break;
case AnimationState.Paused:
_animationState = AnimationState.Started;
break;
case AnimationState.Started:
_animationState = AnimationState.Paused;
break;
case AnimationState.Reloading:
break;
default:
throw new ArgumentOutOfRangeException();
}
}
gridController.LoadGridState(_grid.RenderNodeTypes(_start, _end));
switch (_animationState) {
case AnimationState.Reloading:
if (!Input.GetMouseButton(0)) {
GeneratePath();
LoadNextState();
_animationState = AnimationState.Started;
}
else
gridController.LoadGridState(_grid.RenderNodeTypes(_start, _end));
break;
case AnimationState.Started:
// Calculate how much to move forward
var increment = Time.deltaTime * speed * CurrentMultiplier();
if (clampIncrement > 0)
increment = Mathf.Clamp(increment, 0, _state.Count * Time.deltaTime / clampIncrement);
_runtime += increment;
if (CurrentIndex < _state.Count)
LoadNextState();
break;
case AnimationState.Stopped:
gridController.LoadGridState(_grid.RenderNodeTypes(_start, _end));
break;
case AnimationState.Paused:
break;
default:
throw new ArgumentOutOfRangeException();
}
if (_animationState != _previousAnimationState) {
Debug.Log($"Animation State {_previousAnimationState} -> {_animationState}");
_previousAnimationState = _animationState;
}
}
private void GeneratePath() {
if (_algorithm != null)
_algorithm.Cleanup();
_runtime = 0f;
_algorithm = new AStar(_grid);
_path = _algorithm.FindPath(_start, _end);
// Debug.Log($"{_state.Count} changs made");
_state = _algorithm.ChangeController;
}
private void LoadNextState() {
// Move to the new calculated index
_state.MoveTo(Math.Max(1, CurrentIndex)); // use Math.max to ensure both start/end nodes are always rendered
gridController.LoadDirtyGridState(_state.Current, _state.DirtyFlags);
string pathCount = _path != null ? $"{_path.Count}" : "N/A";
manager.debugText.text = $"{_state.CurrentRuntime * 1000.0:F1}ms\n" +
$"{CurrentIndex:000} / {_state.Count:000}\n" +
$"Path: {pathCount} tiles";
}
/// <summary>
/// Generates the path and sets up the UI Controller to begin animation.
/// Returns the current time multiplier, based on the latest change in the path.
/// </summary>
private void StartAnimation() {
/// <returns>A positive non-zero float representing how fast the current frame should be processed.</returns>
private float CurrentMultiplier() {
if (_state.Index == -1)
return 1;
switch (_state.CurrentChange.New) {
case GridNodeType.Path:
return 1 / 5f;
case GridNodeType.Empty:
break;
case GridNodeType.Wall:
break;
case GridNodeType.Start:
break;
case GridNodeType.End:
break;
case GridNodeType.Seen:
break;
case GridNodeType.Expanded:
break;
default:
throw new ArgumentOutOfRangeException();
}
return 1;
}
/// <summary>
/// Stops the path animation and readies the UI Controller for grid editing.
/// </summary>
private void StopAnimation() {
public void OnDrawGizmos() {
if (!Application.isPlaying) return;
Vector3 mouse = manager.mainCamera.ScreenToWorldPoint(Input.mousePosition);
Vector3 localScale = manager.gridObject.transform.localScale;
Vector2Int gridPosition = gridController.GetGridPosition(mouse);
var style = new GUIStyle();
style.normal.textColor = Color.blue;
Gizmos.color = Color.blue;
Gizmos.DrawWireCube(gridController.GetWorldPosition(gridPosition), localScale / (Vector2) gridController.Size);
Handles.Label(mouse, String.Format("{0}{1}",
gridPosition,
_algorithm.NodeGrid.IsValid(gridPosition)
? $"\n{_state.Current[gridPosition.x, gridPosition.y]}"
: ""
), style);
}
}