Initial commit

nodes/player_controller.gd

@@ -0,0 +1,80 @@
+class_name PlayerController extends Node
+
+const SPEED = 192.0
+
+@export var dl_map: CombatMap
+
+var _selected_unit: Unit = null
+var _target_pos: Vector2
+var _goal_pos: Vector2
+var _moving := false
+
+
+func _unhandled_input(event: InputEvent) -> void:
+	if event is InputEventMouseButton and not event.pressed and event.button_index == MOUSE_BUTTON_LEFT:
+		var world_pos: Vector2 = get_viewport().get_canvas_transform().affine_inverse() * event.position
+		var clicked_unit := _get_unit_at(world_pos)
+
+		if clicked_unit:
+			_select_unit(clicked_unit)
+			get_viewport().set_input_as_handled()
+		elif _selected_unit:
+			var snapped_pos := dl_map.snap_to_grid(world_pos)
+			var grid_coords := dl_map.world_to_coords(world_pos)
+			if dl_map.is_wall(grid_coords):
+				return
+			_goal_pos = snapped_pos
+			get_viewport().set_input_as_handled()
+
+
+func _physics_process(delta: float) -> void:
+	if not _selected_unit:
+		return
+
+	if _moving:
+		var remaining := _target_pos - _selected_unit.position
+		var step := SPEED * delta
+
+		if remaining.length() <= step:
+			_selected_unit.position = _target_pos
+			_moving = false
+		else:
+			_selected_unit.position += remaining.normalized() * step
+		return
+
+	if _selected_unit.position != _goal_pos:
+		var diff := _goal_pos - _selected_unit.position
+		var dir: Vector2
+		if absf(diff.x) >= absf(diff.y):
+			dir = Vector2(signf(diff.x), 0)
+		else:
+			dir = Vector2(0, signf(diff.y))
+
+		var next_pos := _selected_unit.position + dir * dl_map.TILE_SIZE
+		var grid_coords := dl_map.world_to_coords(next_pos)
+		if dl_map.is_wall(grid_coords):
+			_goal_pos = _selected_unit.position
+			return
+
+		_target_pos = next_pos
+		_moving = true
+
+
+func _select_unit(unit: Unit) -> void:
+	if _selected_unit:
+		_selected_unit.set_selected(false)
+	_selected_unit = unit
+	_selected_unit.set_selected(true)
+	_goal_pos = _selected_unit.position
+	_target_pos = _selected_unit.position
+	_moving = false
+
+
+func _get_unit_at(world_pos: Vector2) -> Unit:
+	var snapped := dl_map.snap_to_grid(world_pos)
+	for child in get_parent().get_children():
+		if child is Unit:
+			var unit_snapped := dl_map.snap_to_grid(child.global_position)
+			if unit_snapped == snapped:
+				return child
+	return null