public MovementAI(SpritePolygon collisionPolygon, Enemy parent)
{
nodeMap = NodeMapRepository.GetNodeMap(collisionPolygon);
pathFinder = new PathFinder();
this.parent = parent;
sightRange = 50;
}
public static NodeMap CreateFromTileMap(TileMap tileMap, SpritePolygon collisionPolygon)
{
NodeMap nodeMap = new NodeMap(tileMap.MapWidthTiles, tileMap.MapHeightTiles, tileMap.TileHeight, tileMap.TileWidth);
nodeMap.generationPolygon = (SpritePolygon)collisionPolygon.Clone();
for (int i = 0; i < nodeMap.XSize; i++)
{
for (int j = 0; j < nodeMap.YSize; j++)
{
Vector2 position = new Vector2
{
X = nodeMap.Nodes[i, j].X,
Y = nodeMap.Nodes[i, j].Y
};
collisionPolygon.MoveTo(position);
Collision collision = tileMap.CheckCollisionWithTerrain(collisionPolygon);
if (collision == Collision.Solid || collision == Collision.Water)
{
nodeMap.Nodes[i, j].IsFree = false;
nodeMap.Nodes[i, j].IsTerrain = true;
}
}
}
return(nodeMap);
}
public Collision CheckCollisionWithTerrain(SpritePolygon spritePolygon)
{
var collision = Collision.None;
try
{
foreach (var layer in map.Layers)
{
//if (layer.Name == "accesories") continue;
foreach (var point in spritePolygon.CollisionPoints)
{
var currentTile = GetCurrentTilesGid(point, layer);
if (CollisionPolygons.TryGetValue(currentTile, out Tuple <Polygon, Collision> terrainPolygon))
{
var tileOrigin = GetCurrentTileOrigin(point);
var polygonTileCoord = TransformPolygonToTileCoord(spritePolygon, tileOrigin);
if (polygonTileCoord.Intersects(terrainPolygon.Item1))
{
collision = terrainPolygon.Item2;
}
}
}
}
}
catch (ArgumentOutOfRangeException) //being out of map counts as collision
{
return(Collision.Solid);
}
return(collision);
}
public Sprite(Texture2D texture2D, Vector2 position)
{
frame = State.Content.Load <Texture2D>("frame");
this.texture = texture2D;
this.Position = position;
Scale = 1f;
collisionPolygon = new SpritePolygon(new Rectangle((int)Position.X,
(int)Position.Y,
(int)(texture.Width * Scale),
(int)(texture.Height * Scale)));
}
public Sprite(Dictionary <string, Animation> animations, Vector2 position)
{
this.animations = animations;
frame = State.Content.Load <Texture2D>("frame");
Scale = 1f;
//if you are changing this, there might be trouble in Character origin, so dont do that unless it is necessary
animationManager = new AnimationManager(animations.First().Value);
this.Position = position;
collisionPolygon = new SpritePolygon(new Rectangle((int)Position.X,
(int)Position.Y,
(int)(animationManager.Animation.FrameWidth * Scale),
(int)(animationManager.Animation.FrameHeight * Scale)));
}
public static NodeMap GetNodeMap(SpritePolygon collisionPolygon)
{
var polygon = (SpritePolygon)collisionPolygon.Clone();
polygon.MoveTo(Vector2.Zero);
if (nodeMaps.TryGetValue(polygon, out NodeMap nodeMap))
{
return(nodeMap);
}
var map = NodeMap.CreateFromTileMap(GameState.TileMap, polygon);
polygon.MoveTo(Vector2.Zero);
nodeMaps.Add(polygon, map);
return(map);
}
private bool CanGoStraightTo(Node node)
{
bool canGo = false;
Vector2 direction = new Vector2()
{
X = node.X - (float)Math.Floor(parent.Position.X),
Y = node.Y - (float)Math.Floor(parent.Position.Y)
};
direction.Normalize();
direction *= 8;
SpritePolygon collisionPolygon = (SpritePolygon)parent.CollisionPolygon.Clone();;
while (GameState.TileMap.CheckCollisionWithTerrain(collisionPolygon) == Collision.None)
{
if (DistanceFrom(node, collisionPolygon.Vertices[0]) <= direction.Length())
{
canGo = true;
break;
}
collisionPolygon.Translate(direction);
}
return(canGo);
}
