Renamed CollisionManager

Assets/Scripts/CollisionManager.cs

@@ -0,0 +1,267 @@
+using System;
+using UnityEngine;
+
+namespace Marro.PacManUdon
+{
+    enum EatResult
+    {
+        None,
+        Pellet,
+        PowerPellet
+    }
+
+    public class CollisionManager : SyncedObject
+    {
+        public int PelletCount => pellets.Length;
+        public int PelletCollectedCount { get; private set; }
+
+        private GameManager gameManager;
+        private BonusFruit bonusFruit;
+
+        Pellet[] pellets;
+        Animator[] powerPellets;
+        Ghost[] ghosts;
+
+        bool powerPelletBlinkEnabled;
+        float powerPelletBlinkToggleInterval;
+        float powerPelletBlinkProgress;
+        bool powerPelletBlinkCurrentlyVisible;
+
+        byte[] syncedPelletsCollected;
+
+        byte[] collisionMap;
+        byte[] pelletMap;
+
+        const int mazeWidth = 32;
+        const int mazeHeight = 32;
+
+        private int[] ghostPositions = new int[4];
+        private int pacManPosition;
+
+        public void Initialize(GameManager gameManager, BonusFruit bonusFruit, Ghost[] ghosts)
+        {
+            this.gameManager = gameManager;
+            this.bonusFruit = bonusFruit;
+            this.ghosts = ghosts;
+
+            gameObject.SetActive(true);
+            pellets = GetComponentsInChildren<Pellet>(includeInactive: true);
+
+            powerPellets = GetComponentsInChildren<Animator>(true);
+            powerPelletBlinkToggleInterval = PacManConstants.GetPowerPelletBlinkToggleInterval();
+            SetPowerPelletsBlink(false);
+
+            collisionMap = PacManConstants.GetMazeCollisionInfo();
+
+            RestoreAllPellets();
+
+            SubscribeToEvent(NetworkEventType.SyncPellets);
+        }
+
+        #region Collision
+        public bool IsWallUpcoming(Vector2 position, Vector2 directionVector)
+        {
+            var index = GetTilemapIndex(position + directionVector);
+            var tile = collisionMap[index];
+            var result = (tile & (int)PacManCollisionInfoType.Wall) != 0;
+            //Debug.Log($"IsWallUpcoming {position}, {directionVector}. index {index}, tile {tile}, result {result}, collisionMap.Length {collisionMap.Length}");
+            return result;
+        }
+
+        public bool GhostMoveToTile(Vector2 position, int ghostIndex)
+        {
+            var tile = GetTilemapIndex(position);
+
+            ghostPositions[ghostIndex] = tile;
+
+            if (tile == pacManPosition)
+            {
+                Debug.Log("Ghost hit PacMan!");
+                ghosts[ghostIndex].HitPacMan();
+            }
+
+            return (collisionMap[tile] & (int)PacManCollisionInfoType.Tunnel) != 0;
+        }
+
+        internal EatResult PacManMoveToTile(Vector2 position, Vector2 nextPosition)
+        {
+            var tilemapIndex = GetTilemapIndex(nextPosition);
+            var tile = pelletMap[tilemapIndex];
+
+            pacManPosition = tilemapIndex;
+
+            TryEatGhost(tilemapIndex);
+
+            TryCollectFruit(tile, position);
+            return TryCollectPellet(tile, tilemapIndex);
+        }
+
+        private void TryEatGhost(int tilemapIndex)
+        {
+            for (int i = 0; i < ghosts.Length; i++)
+            {
+                if (ghostPositions[i] == tilemapIndex)
+                {
+                    Debug.Log("PacMan hit ghost!"); 
+                    ghosts[i].HitPacMan();
+                }
+            }
+        }
+
+        private void TryCollectFruit(int tile, Vector2 position)
+        {
+            if (tile != (int)PacManConsumableType.FruitLeft && tile != (int)PacManConsumableType.FruitRight
+                || !bonusFruit.Active)
+            {
+                return;
+            }
+
+            var previousTile = pelletMap[GetTilemapIndex(position)];
+
+            //Debug.Log($"On fruit tile {tile}, previous tile was {previousTile}. Position {position}, nextPosition {nextPosition}");
+
+            if (tile == (int)PacManConsumableType.FruitLeft && previousTile == (int)PacManConsumableType.FruitRight
+                || tile == (int)PacManConsumableType.FruitRight && previousTile == (int)PacManConsumableType.FruitLeft)
+            {
+                //Debug.Log("Collecting fruit");
+
+                gameManager.GotFruit();
+            }
+        }
+
+        public int GetAvailableDirections(Vector2 position)
+        {
+            var directions = collisionMap[GetTilemapIndex(position)];
+
+            return directions;
+        }
+
+        internal static int GetTilemapIndex(Vector2 position)
+        {
+            // (int)position.x %% mazeWidth + (int)position.y %% mazeHeight * mazeWidth, where %% is an absolute modulo
+            // Absoliute modulo in this case is implemented by just adding the divisor, works good enough and is performant.
+            var index = ((int)position.x + mazeWidth) % mazeWidth + ((int)position.y + mazeHeight) % mazeHeight * mazeWidth;
+
+            return index;
+        }
+        #endregion
+
+        #region Pellet collecting
+        private EatResult TryCollectPellet(int tile, int tilemapIndex)
+        {
+            if (tile < 0 || tile >= pellets.Length)
+            {
+                return EatResult.None;
+            }
+
+            pelletMap[tilemapIndex] = (byte)PacManConsumableType.None;
+
+            var pellet = pellets[tile];
+            pellet.gameObject.SetActive(false);
+
+            var index = pellet.transform.GetSiblingIndex();
+            syncedPelletsCollected[index / 8] |= (byte)(1 << index % 8);
+
+            PelletCollectedCount++;
+
+            var pelletType = pellet.isPowerPellet ? EatResult.PowerPellet : EatResult.Pellet;
+
+            gameManager.GotPellet(pellet, pellet.isPowerPellet, PelletCollectedCount, PelletCount - PelletCollectedCount);
+
+            return pelletType;
+        }
+
+        public int RestoreAllPellets()
+        {
+            foreach (var pellet in pellets)
+            {
+                pellet.gameObject.SetActive(true);
+            }
+
+            syncedPelletsCollected = new byte[pellets.Length/8 + 1];
+            PelletCollectedCount = 0;
+
+            pelletMap = PacManConstants.GetMazePelletMap();
+
+            return PelletCount;
+        }
+
+        private void SetPelletsCollectedFromSync()
+        {
+            for (int i = 0; i < pellets.Length; i++)
+            {
+                var active = (syncedPelletsCollected[i/8] & (byte)(1 << i%8)) == 0;
+                pellets[i].gameObject.SetActive(active);
+            }
+        }
+        #endregion
+
+        #region Power pellet blink
+        public override void SyncedUpdate()
+        {
+            if (!powerPelletBlinkEnabled)
+            {
+                return;
+            }
+
+            powerPelletBlinkProgress += networkManager.SyncedDeltaTime;
+            if (powerPelletBlinkProgress >= powerPelletBlinkToggleInterval)
+            {
+                // Debug.Log($"{gameObject} PowerPelletBlink toggle");
+                powerPelletBlinkProgress -= powerPelletBlinkToggleInterval;
+                powerPelletBlinkCurrentlyVisible = !powerPelletBlinkCurrentlyVisible;
+                SetPowerPelletsVisible(powerPelletBlinkCurrentlyVisible);
+            }
+        }
+
+        void SetPowerPelletsVisible(bool visible)
+        {
+            // Debug.Log($"{gameObject} SetPowerPelletVisible {visible}, powerPellets.Length: {powerPellets.Length}");
+            foreach (Animator powerPellet in powerPellets)
+            {
+                powerPellet.SetBool("Visible", visible);
+            }
+        }
+
+        public void SetPowerPelletsBlink(bool enabled)
+        {
+            // Debug.Log($"{gameObject} SetPowerPelletBlink {enabled}");
+            powerPelletBlinkEnabled = enabled;
+
+            powerPelletBlinkCurrentlyVisible = true;
+            powerPelletBlinkProgress = 0;
+            SetPowerPelletsVisible(true);
+        }
+
+        public void FreezePowerPelletsBlink(bool frozen)
+        {
+            powerPelletBlinkEnabled = !frozen;
+        }
+        #endregion
+
+        public override void CollectSyncedData(byte[] data, ref int index, NetworkEventType eventType)
+        {
+            if (eventType != NetworkEventType.SyncPellets)
+            {
+                return;
+            }
+
+            data.Append((byte)PelletCollectedCount, ref index);
+            data.Append(syncedPelletsCollected, ref index);
+        }
+
+        public override bool WriteSyncedData(byte[] data, ref int index, NetworkEventType eventType)
+        {
+            if (eventType != NetworkEventType.SyncPellets)
+            {
+                return true;
+            }
+
+            PelletCollectedCount = data.ReadByte(ref index);
+            Array.Copy(data, index, syncedPelletsCollected, 0, syncedPelletsCollected.Length);
+            index += syncedPelletsCollected.Length;
+            SetPelletsCollectedFromSync();
+            return true;
+        }
+    }
+}