JosLe/logic-gates
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feat: port labels on component gates + persistent internal state

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Show input/output labels next to ports on custom component chips,
and persist internal gate state between evaluations so latches and
flip-flops retain their values correctly.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Jose Luis
2026-03-20 04:15:37 +01:00
parent 1c45dc6104
commit 817dab43df
2 changed files with 46 additions and 3 deletions
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12
js/components.js
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@@ -53,6 +53,8 @@ export function saveComponentFromCircuit(name) {
/**
* Evaluate a component instance.
* Simulates the internal circuit and returns an array of output values.
* IMPORTANT: Uses persistent internal state so latches/flip-flops retain
* their values between evaluations (just like the main circuit).
*/
export function evaluateComponent(gate, inputs) {
if (!gate.component) {
@@ -62,8 +64,11 @@ export function evaluateComponent(gate, inputs) {
const comp = gate.component;
// Deep clone internal circuit for simulation
const internalGates = JSON.parse(JSON.stringify(comp.gates));
// Persist internal gate state on the gate instance so latches hold their value
if (!gate._internalGates) {
gate._internalGates = JSON.parse(JSON.stringify(comp.gates));
}
const internalGates = gate._internalGates;
const internalConns = comp.connections; // read-only, no need to clone
// Map external inputs to internal INPUT gates using stored inputIds
@@ -133,7 +138,8 @@ export function evaluateComponent(gate, inputs) {
}
}
console.log(`[component] eval "${comp.name}" inputs=[${inputs}] → outputs=[${outputs}]`);
console.log(`[component] eval "${comp.name}" inputs=[${inputs}] → outputs=[${outputs}]`,
`(internal state preserved: ${gate._internalGates ? 'yes' : 'no'})`);
return outputs;
}