public static void Wander(Entity e, NativeReference <Random> RNG, ComponentDataFromEntity <Position> PosFromEntity, PathingBitGrid pathMap,
GridData2D <bool> obstacles,
GridData2D <Entity> mapEntities)
{
int dirIndex = RNG.NextInt(0, 8);
int2 dir = Grid2D.Directions8Way[dirIndex];
int2 curr = PosFromEntity[e];
int2 next = curr + dir;
if (!pathMap[next])
{
MapUtility.MoveActor(e, PosFromEntity,
curr, next, obstacles, mapEntities);
}
}
public void Execute(ArchetypeChunk chunk, int chunkIndex, int firstEntityIndex)
{
var viewAccessor = chunk.GetBufferAccessor(ROViewHandle);
var obstacles = MapStateData.Obstacles;
var mapEntities = MapStateData.Entities;
int playerIndex = 0;
if (PlayerEntity != Entity.Null)
{
int2 playerPos = PosFromEntity[PlayerEntity];
playerIndex = obstacles.PosToIndex(playerPos);
}
var entities = chunk.GetNativeArray(EntityHandle);
var energyArr = chunk.GetNativeArray(EnergyHandle);
var attackArr = chunk.GetNativeArray(AttackPowerHandle);
//Debug.Log("Monster AI running");
for (int i = 0; i < viewAccessor.Length; ++i)
{
Entity e = entities[i];
var viewBuffer = viewAccessor[i].Reinterpret <bool>();
var pathMap = new PathingBitGrid(obstacles, Allocator.Temp);
//Debug.Log($"Monster is taking a turn");
energyArr[i] -= Energy.ActionThreshold;
// For testing purposes - comment out
// "RequireSingletonForUpdate<Player>()" in OnCreate to
// let monsters wander in "real time"
if (PlayerEntity == Entity.Null)
{
Wander(e, RNG, PosFromEntity, pathMap, obstacles, mapEntities);
return;
}
if (viewBuffer.Length == 0)
{
return;
}
bool playerIsVisible = viewBuffer[playerIndex];
if (playerIsVisible)
{
int2 curr = PosFromEntity[e];
int startIndex = obstacles.PosToIndex(curr);
if (startIndex == playerIndex)
{
continue;
}
// Open the player's space for pathfinding
pathMap[playerIndex] = false;
var astar = new AStar(10, Allocator.Temp);
var path = new NativeList <int>(10, Allocator.Temp);
astar.FindPath(pathMap, startIndex, playerIndex, path);
if (path.Length > 2)
{
//Debug.Log("MONSTER MOVED");
int2 next = obstacles.IndexToPos(path[1]);
MapUtility.MoveActor(e, PosFromEntity,
curr, next, obstacles, mapEntities);
}
if (path.Length == 2)
{
//Debug.Log("Monster is next to the player");
var defend = DefendBFE[PlayerEntity];
var attack = attackArr[i];
int dmg = RNG.RollDice(attack);
defend.Add(new CombatDefendBuffer
{
Attacker = e,
Damage = dmg
});
}
pathMap[playerIndex] = true;
}
}
}
