using UnityEngine;

namespace MazeGen
{
    [CreateAssetMenu(fileName = "MazeGenerationSettings", menuName = "MazeGen/Generation Settings")]
    public class MazeGenerationSettings : ScriptableObject
    {
        [Header("Exits per room")]
        [Tooltip("Exits are grid-locked to the 4 cardinal directions (N/E/S/W), so a room can have at most one exit per side.")]
        [Range(1, 4)] public int minExitsPerRoom = 1;
        [Range(1, 4)] public int maxExitsPerRoom = 4;

        [Header("Layout")]
        [Tooltip("World-space distance between a room's center and the next room it spawns.")]
        public float roomSpacing = 4f;
        public float startRoomRadius = 1.2f;
        public float normalRoomRadius = 1f;
        public float hallwayRadius = 0.5f;
        public float exitRoomRadius = 1.2f;

        [Header("Room kind mix")]
        [Range(0f, 1f)] public float hallwayChance = 0.25f;

        [Header("Room merging (loops)")]
        [Tooltip("Extra clearance (world units) required between a candidate hallway path and any unrelated room/hallway footprint for that path to be considered clear.")]
        public float hallwayClearance = 0.1f;

        [Header("Collision avoidance (repositioning)")]
        [Tooltip("Distance (world units) between successive rings when searching for a collision-free spot to move a newly spawned room to.")]
        public float repositionRingStep = 1f;
        [Tooltip("Number of candidate positions sampled per ring while searching for a collision-free spot.")]
        [Range(4, 36)] public int repositionSamplesPerRing = 12;
        [Tooltip("Maximum number of rings to search outward before giving up and using the original (possibly overlapping) position.")]
        [Range(1, 32)] public int maxRepositionRings = 10;

        [Header("Exit-room eligibility")]
        [Tooltip("Number of NEW (never-before-visited) rooms the agent must have entered before an Exit room is allowed to appear.")]
        public int minNewRoomsBeforeExitEligible = 5;
        [Range(0f, 1f)] public float exitRoomChanceOnceEligible = 0.2f;
        [Tooltip("Safety valve: if no Exit room has appeared naturally after this many new rooms, force the next generated room to be one, guaranteeing every maze is solvable in bounded steps.")]
        public int forceExitAfterNewRooms = 20;
    }
}