78 lines
2.5 KiB
C#
78 lines
2.5 KiB
C#
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using UnityEngine;
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using System.Collections.Generic;
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namespace TGS {
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public delegate void MoveEvent(GameObject gameObject);
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public delegate void CellMoveEvent(GameObject gameObject, Vector3 destination, int pathIndex, List<int> path);
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public class GridMove : MonoBehaviour {
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public TerrainGridSystem grid;
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public List<int> positions;
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public float velocity;
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public float elevation;
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/// <summary>
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/// Triggered when the MoveTo operation finishes and gameobject reaches the destination
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/// </summary>
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public event MoveEvent OnMoveEnd;
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/// <summary>
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/// Triggered when the gameobject has moved into the next cell
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/// </summary>
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public event CellMoveEvent OnCellMove;
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Vector3 destination;
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int posIndex;
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float lastMoveTime;
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private void OnEnable() {
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lastMoveTime = Time.time;
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}
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public void Begin() {
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posIndex = 0;
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lastMoveTime = Time.time;
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if (velocity == 0) {
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if (positions != null) {
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transform.position = grid.CellGetPosition(positions[positions.Count - 1], worldSpace: true, elevation);
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}
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DestroyImmediate(this);
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return;
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}
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ComputeNextDestination();
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}
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void Update() {
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float now = Time.time;
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float moveDistance = velocity * (now - lastMoveTime);
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lastMoveTime = now;
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float remainingDistance = Vector3.Distance(transform.position, destination);
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while (moveDistance >= remainingDistance) {
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moveDistance -= remainingDistance;
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transform.position = destination;
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if (!ComputeNextDestination()) return;
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remainingDistance = Vector3.Distance(transform.position, destination);
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}
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Vector3 moveDir = (destination - transform.position).normalized;
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transform.position += moveDir * moveDistance;
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}
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bool ComputeNextDestination() {
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if (positions == null || posIndex >= positions.Count) {
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if (OnMoveEnd != null) OnMoveEnd(gameObject);
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DestroyImmediate(this);
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return false;
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}
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destination = grid.CellGetPosition(positions[posIndex], worldSpace: true, elevation);
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if (OnCellMove != null) OnCellMove(gameObject, destination, posIndex, positions);
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posIndex++;
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return true;
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}
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}
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}
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