Switch Case (Flowgraph Node)

Overview

• Node Name: Switch Case
• Category: logic
• File: extensions/flowgraph/nodes/logic/switchcase.lua

Compares an input value against multiple case values and routes flow to the matching output. Equivalent to a switch/case statement.

Pin Schema

Input Pins

Additional value_N input pins created via Count property.

Output Pins

Additional match_N output pins created via Count property.

Behavior

• init() - Sets count to 1.
• work() - Iterates through all case values. If value_N == value, sets match_N to true. If no match, sets none to true. Flow always passes through.
• updatePins(old, new) - Dynamically adds/removes value_N/match_N pin pairs.
• drawCustomProperties() - UI for adjusting the case count.

How It Works

The node performs equality comparison (==) between the input value and each value_N case. All matching cases fire simultaneously (not just the first). If none match, the none output fires. The main flow output always passes through regardless of matching.

Example Usage

-- Route based on vehicle type:
-- value = vehicleType (string)
-- value_1 = "car", match_1 → handle car logic
-- value_2 = "truck", match_2 → handle truck logic
-- value_3 = "bus", match_3 → handle bus logic
-- none → unknown vehicle type

-- Equivalent Lua:
if value == "car" then      -- match_1
elseif value == "truck" then -- match_2
elseif value == "bus" then   -- match_3
else                         -- none
end

Additional Methods

C:_executionStarted()

Called when graph execution starts. Used for initialization/reset.

C:_onDeserialized(res)

Called after the node is deserialized (loaded from file). Restores runtime state from saved data.

Parameters:

• res

C:_onSerialize(res)

Called when the node is serialized (saved to file). Returns data to persist.

Parameters:

• res

C:drawMiddle(builder, style)

Custom ImGui drawing in the middle section of the node in the editor.

Parameters:

• builder
• style

See Also

• And (Flowgraph Node) - Related reference
• Boolean Expression (Flowgraph Node) - Related reference
• Branch (Flowgraph Node) - Related reference
• FlowGraph Guide - Guide