blink moves forward a short number of meters, not along waypoint boundaries
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3 changed files with 52 additions and 22 deletions
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@ -15,5 +15,5 @@ MonoBehaviour:
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DisplayName: Blink
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Description: Enemies occasionally teleport a short distance ahead.
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IntervalSeconds: 4
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BlinkWaypoints: 2
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BlinkDistanceMeters: 4
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StartJitterSeconds: 1.5
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@ -27,10 +27,9 @@ namespace TD.Gameplay.EnemyAbilities
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[Min(0.1f)]
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public float IntervalSeconds = 4f;
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[Tooltip("How many path waypoints to skip per blink. Note that path smoothing can make " +
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"one waypoint span several tiles, so this is a coarser dial than it looks.")]
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[Min(1)]
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public int BlinkWaypoints = 2;
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[Tooltip("World units to advance along the path per blink.")]
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[Min(0.1f)]
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public float BlinkDistanceMeters = 4f;
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[Tooltip("Random spread (seconds) added to each enemy's first blink so a wave doesn't " +
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"blink in one synchronized block. Applied once, at spawn.")]
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@ -54,7 +53,7 @@ namespace TD.Gameplay.EnemyAbilities
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if (timer < IntervalSeconds) return;
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timer = 0f;
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instance.GetComponent<EnemyMovement>()?.ServerBlinkForward(BlinkWaypoints);
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instance.GetComponent<EnemyMovement>()?.ServerBlinkForward(BlinkDistanceMeters);
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}
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}
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}
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@ -286,39 +286,70 @@ namespace TD.Gameplay
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/// <summary>
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/// Server-only: teleport this enemy forward along its existing path by up to
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/// <paramref name="tiles"/> waypoints. Used by the Blink wave buff.
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/// <paramref name="meters"/> world units. Used by the Blink wave buff.
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/// </summary>
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/// <remarks>
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/// <b>Follows the path rather than the straight line to the goal.</b> Jumping toward the
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/// goal as the crow flies would let a grounded enemy blink through walls, which is the
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/// flying buff's job, not this one. Skipping waypoints keeps the enemy inside the maze —
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/// flying buff's job, not this one. Walking the path keeps the enemy inside the maze —
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/// it cuts corners, it doesn't ignore them.
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///
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/// <para>Zone tracking still runs on the destination tile, so an enemy that blinks out of
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/// its origin zone still credits its owner a leak. Skipping that would make the buff a way
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/// to launder leaks past the no-leak bonus.</para>
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/// <para>Distance is measured along the path (waypoint to waypoint), consuming the
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/// budget one segment at a time, so the landing spot can fall mid-segment rather than
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/// snapping to a waypoint. This keeps the blink distance predictable regardless of how
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/// far apart the path's waypoints happen to be — unlike skipping a fixed waypoint count,
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/// where one blink could span a few tiles or the length of the whole map depending on
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/// path smoothing.</para>
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///
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/// <para>Blinking onto the final waypoint resolves as a normal goal arrival, despawn and
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/// life cost included.</para>
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/// <para>Zone tracking runs once, on the final landing tile, so an enemy that blinks out
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/// of its origin zone still credits its owner a leak. Skipping that would make the buff a
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/// way to launder leaks past the no-leak bonus.</para>
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///
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/// <para>Blinking onto (or past) the final waypoint resolves as a normal goal arrival,
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/// despawn and life cost included.</para>
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/// </remarks>
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public void ServerBlinkForward(int tiles)
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public void ServerBlinkForward(float meters)
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{
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if (!IsServer || tiles <= 0) return;
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if (!IsServer || meters <= 0f) return;
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if (hasReachedGoal || remainingPath.Count == 0) return;
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if (health != null && health.IsHeld) return;
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int skip = Mathf.Min(tiles, remainingPath.Count);
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Vector2Int destination = remainingPath[skip - 1];
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remainingPath.RemoveRange(0, skip);
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float remaining = meters;
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Vector3 position = transform.position;
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while (remaining > 0f && remainingPath.Count > 0)
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{
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Vector3 targetWorld = GridCoordinates.GridToWorld(remainingPath[0]);
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Vector3 toTarget = targetWorld - position;
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toTarget.y = 0f;
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float distance = toTarget.magnitude;
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if (distance <= remaining)
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{
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// Reach this waypoint fully and keep walking the leftover budget
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// into the next segment.
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remaining -= distance;
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position = new Vector3(targetWorld.x, position.y, targetWorld.z);
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remainingPath.RemoveAt(0);
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}
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else
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{
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// Budget runs out partway along this segment.
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position += toTarget.normalized * remaining;
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remaining = 0f;
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}
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}
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// Preserve Y so flyers stay at altitude and grounded pivots don't sink.
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Vector3 world = GridCoordinates.GridToWorld(destination);
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transform.position = new Vector3(world.x, transform.position.y, world.z);
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CheckZoneTransition(destination);
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transform.position = position;
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if (remainingPath.Count == 0)
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{
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HandleGoalReached();
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return;
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}
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CheckZoneTransition(GridCoordinates.WorldToGrid(position));
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}
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// ----- Path invalidation ----------------------------------------------
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