public void Update(float delta)
{
for (int i = 0; i < entities.Count; ++i)
{
UpdateEntity(i, delta);
}
for (int i = 0; i < entities.Count; ++i)
{
if (entities[i].HasComponent(out Physics phys))
{
ApplyGravityOnEntity(i, phys, delta); // Apply gravity on entity.
}
if (entities[i].IsCollidble)
{
#region Tile Collision
if (entities[i].HasComponent(out Collider collider))
{
foreach (var layer in map.tileLayers)
{
if (!layer.Properties.ContainsProperty("Collision"))
{
continue;
}
foreach (var tile in GetRelevantTiles(layer, entities[i].pos, 8))
{
if (tile.id == 0 || !tile.rect.Intersects(collider.rect))
{
continue;
}
Rectangle intersection = Rectangle.Intersect(collider.rect, tile.rect);
COLLISION_SIDE side = collider.GetIntersectionSide(tile.rect);
//Console.WriteLine(side);
if (side == COLLISION_SIDE.Top)// && collider.rect.Top < intersection.Top
{
entities[i].pos.Y -= intersection.Height;
phys?.Land();
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
else if (side == COLLISION_SIDE.Bottom)// && collider.rect.Bottom > intersection.Top
{
entities[i].pos.Y += (intersection.Height);
if (phys?.jump < 0)
{
phys.jump /= 2;
}
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
if (side == COLLISION_SIDE.Left) //&& collider.rect.Y > tile.rect.Y
{
entities[i].pos.X -= intersection.Width;
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
else if ((collider.rect.Bottom - phys.gravity) > tile.rect.Top && side == COLLISION_SIDE.Right) //&& collider.rect.Bottom < tile.rect.Top
{
entities[i].pos.X += intersection.Width;
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
#endregion
}
}
}
#region Other Colliders
// To avoid crash
if (collider == null)
{
continue;
}
for (int j = 0; j < entities.Count; ++j)
{
if (i == j)
{
continue;
}
if (entities[j].HasComponent(out Collider other))
{
Rectangle intersection = Rectangle.Intersect(collider.rect, other.rect);
COLLISION_SIDE side = collider.GetIntersectionSide(other);
if (side != COLLISION_SIDE.None)
{
other.OnCollided(new CollisionArgs(side));
if (entities[j].HasComponent(out Collectible collectible))
{
if (entities[i].HasComponent(out Inventory inv))
{
inv.AddToInventory(collectible);
}
}
if (side == COLLISION_SIDE.Top)
{
entities[i].pos.Y -= intersection.Height;
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
else if (side == COLLISION_SIDE.Bottom)
{
entities[i].pos.Y += (intersection.Height);
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
if (side == COLLISION_SIDE.Left)
{
entities[i].pos.X -= intersection.Width;
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
else if (side == COLLISION_SIDE.Right)
{
entities[i].pos.X += intersection.Width;
collider.OnCollided(new CollisionArgs(side));
collider.Update(delta);
continue;
}
}
}
}
#endregion
}
}
}
public CollisionArgs(COLLISION_SIDE side)
{
Side = side;
}
