/// <summary>
/// Moves the selected unit to the clicked location, assuming the location
/// is within range of the unit.
/// </summary>
/// <param name="level"> The level. </param>
private void MoveUnit(Level level)
{
if (InputHandler.LeftMouseClicked()
&& this.unitSelected
&& !this.justClicked)
{
// Note! MouseState.X is the horizontal position and MouseState.Y is the vertical position.
// I want Y to be the horizontal coordinate (the width) and X to be the vertical coordinate
// (the height), so tileY is using the X values and tileX is using the Y values.
var tileY = (int)(InputHandler.MouseState.X + level.Camera.Position.X) / Engine.TileHeight;
var tileX = (int)(InputHandler.MouseState.Y + level.Camera.Position.Y) / Engine.TileWidth;
var tempVector = new Vector(tileX, tileY);
// Checks if the chosen tile is occupied or not.
if (!level.LevelMap.IsOccupied(tileX, tileY)
&& this.selectedUnit.CanTraverse(level.LevelMap.GetCollisionType(tileX, tileY))
&& this.selectedUnit.PointWithinMoveRange(tempVector))
{
var pathToTarget = level.LevelMap.FindShortestPathWithinReach(this.selectedUnit, tempVector).Count;
if (pathToTarget != 0 && pathToTarget <= this.selectedUnit.MoveRange)
{
// Removes the unit from the list, as we need to change the
// position of the unit.
this.PlayerUnits.Remove(this.selectedUnit);
// Notifies the map that the unit is disappearing from its current
// location.
level.LevelMap.MoveUnitAway(this.selectedUnit, level);
// Changes the unit's location.
this.selectedUnit.Location = (Vector)tempVector.Clone();
this.selectedUnit.MoveUnit();
// Notifies the map that the unit has arrived at its target
// location and adds the unit to the unit list again.
level.LevelMap.MoveUnitToNewPosition(this.selectedUnit);
this.PlayerUnits.Add(this.selectedUnit);
this.unitSelected = false;
this.selectedUnit = null;
}
}
// Ensures that other parts in the update method won't be triggered.
this.justClicked = true;
}
}
