Focus large maps on deployment

scripts/scenes/battle_scene.gd

@@ -5212,8 +5212,8 @@ func _board_scroll_offset_for_cell_focus(cell: Vector2i, force_center := false)
 	return _clamped_board_scroll_offset(next_offset)
 
 
-func _focus_board_on_cell(cell: Vector2i, force_center := false) -> bool:
-	if not battle_started or not state.is_inside(cell):
+func _focus_board_on_cell(cell: Vector2i, force_center := false, allow_prebattle := false) -> bool:
+	if (not battle_started and not allow_prebattle) or not state.is_inside(cell):
 		return false
 	var previous_offset := board_scroll_offset
 	board_scroll_offset = _board_scroll_offset_for_cell_focus(cell, force_center)
@@ -5228,6 +5228,40 @@ func _focus_board_on_cell(cell: Vector2i, force_center := false) -> bool:
 	return true
 
 
+func _player_deployment_focus_cell() -> Vector2i:
+	var units := state.get_controllable_player_units()
+	if units.is_empty():
+		units = state.get_living_units(BattleState.TEAM_PLAYER)
+	if units.is_empty():
+		return Vector2i(-1, -1)
+	var min_x := state.map_size.x
+	var min_y := state.map_size.y
+	var max_x := 0
+	var max_y := 0
+	for unit in units:
+		var cell: Vector2i = unit.get("pos", Vector2i(-1, -1))
+		if not state.is_inside(cell):
+			continue
+		min_x = mini(min_x, cell.x)
+		min_y = mini(min_y, cell.y)
+		max_x = maxi(max_x, cell.x)
+		max_y = maxi(max_y, cell.y)
+	if min_x > max_x or min_y > max_y:
+		return Vector2i(-1, -1)
+	return Vector2i(clampi(int(round(float(min_x + max_x) * 0.5)), 0, state.map_size.x - 1), clampi(int(round(float(min_y + max_y) * 0.5)), 0, state.map_size.y - 1))
+
+
+func _focus_board_on_player_deployment(force_center := false) -> bool:
+	return _focus_board_on_cell(_player_deployment_focus_cell(), force_center)
+
+
+func _focus_board_on_formation_unit(force_center := false) -> bool:
+	var unit := state.get_unit(formation_unit_id)
+	if unit.is_empty():
+		return false
+	return _focus_board_on_cell(unit.get("pos", Vector2i(-1, -1)), force_center, true)
+
+
 func _activate_presentation_focus_if_ready(entry: Dictionary) -> void:
 	if bool(entry.get("focused", false)):
 		return
@@ -7375,8 +7409,10 @@ func _start_battle_from_briefing() -> void:
 	_hide_save_menu()
 	_clear_pending_move_state()
 	state.run_battle_begin_events()
+	_focus_board_on_player_deployment(true)
 	_show_next_dialogue()
 	_update_hud()
+	queue_redraw()
 
 
 func _on_chapter_pressed() -> void:
@@ -7937,6 +7973,7 @@ func _on_formation_pressed() -> void:
 		_hide_save_menu()
 		_rebuild_formation_menu()
 		formation_menu.visible = true
+		_focus_board_on_formation_unit(true)
 	_update_hud()
 	queue_redraw()
 
@@ -8216,6 +8253,7 @@ func _on_formation_unit_pressed(unit_id: String) -> void:
 	_play_ui_click()
 	formation_unit_id = unit_id
 	_rebuild_formation_menu()
+	_focus_board_on_formation_unit(true)
 	_update_hud()
 	queue_redraw()
 
@@ -8229,6 +8267,7 @@ func _handle_formation_board_click(screen_position: Vector2) -> void:
 	if state.try_set_prebattle_formation(formation_unit_id, cell):
 		_play_ui_confirm()
 		_rebuild_formation_menu()
+		_focus_board_on_formation_unit()
 		_update_hud()
 		queue_redraw()