Add NOT gate

src/js/game/buildings/logic_gate.js

@@ -6,11 +6,14 @@ import { enumLayer, GameRoot } from "../root";
 import { enumLogicGateType, LogicGateComponent } from "../components/logic_gate";
 
 /** @enum {string} */
-export const enumLogicGateVariants = {};
+export const enumLogicGateVariants = {
+    not: "not",
+};
 
 /** @enum {string} */
 export const enumVariantToGate = {
     [defaultBuildingVariant]: enumLogicGateType.and,
+    [enumLogicGateVariants.not]: enumLogicGateType.not,
 };
 
 export class MetaLogicGateBuilding extends MetaBuilding {
@@ -38,23 +41,24 @@ export class MetaLogicGateBuilding extends MetaBuilding {
         return new Vector(1, 1);
     }
 
+    getAvailableVariants() {
+        return [defaultBuildingVariant, enumLogicGateVariants.not];
+    }
+
     /**
      *
      * @param {Entity} entity
      * @param {number} rotationVariant
      */
     updateVariants(entity, rotationVariant, variant) {
-        entity.components.LogicGate.type = enumVariantToGate[variant];
-    }
+        const gateType = enumVariantToGate[variant];
+        entity.components.LogicGate.type = gateType;
 
-    /**
-     * Creates the entity at the given location
-     * @param {Entity} entity
-     */
-    setupEntityComponents(entity) {
-        entity.addComponent(
-            new WiredPinsComponent({
-                slots: [
+        const pinComp = entity.components.WiredPins;
+
+        switch (gateType) {
+            case enumLogicGateType.and: {
+                pinComp.setSlots([
                     {
                         pos: new Vector(0, 0),
                         direction: enumDirection.top,
@@ -70,7 +74,39 @@ export class MetaLogicGateBuilding extends MetaBuilding {
                         direction: enumDirection.right,
                         type: enumPinSlotType.logicalAcceptor,
                     },
-                ],
+                ]);
+                break;
+            }
+
+            case enumLogicGateType.not: {
+                pinComp.setSlots([
+                    {
+                        pos: new Vector(0, 0),
+                        direction: enumDirection.top,
+                        type: enumPinSlotType.logicalEjector,
+                    },
+                    {
+                        pos: new Vector(0, 0),
+                        direction: enumDirection.bottom,
+                        type: enumPinSlotType.logicalAcceptor,
+                    },
+                ]);
+                break;
+            }
+
+            default:
+                assertAlways("unknown logic gate type: " + gateType);
+        }
+    }
+
+    /**
+     * Creates the entity at the given location
+     * @param {Entity} entity
+     */
+    setupEntityComponents(entity) {
+        entity.addComponent(
+            new WiredPinsComponent({
+                slots: [],
             })
         );
 

src/js/game/components/logic_gate.js

@@ -3,6 +3,7 @@ import { Component } from "../component";
 /** @enum {string} */
 export const enumLogicGateType = {
     and: "and",
+    not: "not",
 };
 
 export class LogicGateComponent extends Component {

src/js/game/meta_building_registry.js

@@ -16,7 +16,7 @@ import { MetaWireBuilding } from "./buildings/wire";
 import { gBuildingVariants, registerBuildingVariant } from "./building_codes";
 import { defaultBuildingVariant } from "./meta_building";
 import { MetaConstantSignalBuilding } from "./buildings/constant_signal";
-import { MetaLogicGateBuilding } from "./buildings/logic_gate";
+import { MetaLogicGateBuilding, enumLogicGateVariants } from "./buildings/logic_gate";
 import { MetaLeverBuilding } from "./buildings/lever";
 
 const logger = createLogger("building_registry");
@@ -97,6 +97,7 @@ export function initMetaBuildingRegistry() {
 
     // Logic gate
     registerBuildingVariant(32, MetaLogicGateBuilding);
+    registerBuildingVariant(34, MetaLogicGateBuilding, enumLogicGateVariants.not);
 
     // Lever
     registerBuildingVariant(33, MetaLeverBuilding);

src/js/game/systems/logic_gate.js

@@ -10,6 +10,7 @@ export class LogicGateSystem extends GameSystemWithFilter {
 
         this.boundOperations = {
             [enumLogicGateType.and]: this.compute_AND.bind(this),
+            [enumLogicGateType.not]: this.compute_NOT.bind(this),
         };
     }
 
@@ -75,4 +76,23 @@ export class LogicGateSystem extends GameSystemWithFilter {
 
         return BOOL_FALSE_SINGLETON;
     }
+
+    /**
+     * @param {Array<BaseItem|null>} parameters
+     * @returns {BaseItem}
+     */
+    compute_NOT(parameters) {
+        const item = parameters[0];
+        if (!item) {
+            return BOOL_FALSE_SINGLETON;
+        }
+
+        if (item.getItemType() !== enumItemType.boolean) {
+            // Not a boolean actually
+            return BOOL_FALSE_SINGLETON;
+        }
+
+        const value = /** @type {BooleanItem} */ (item).value;
+        return value ? BOOL_FALSE_SINGLETON : BOOL_TRUE_SINGLETON;
+    }
 }

translations/base-en.yaml

@@ -564,6 +564,9 @@ buildings:
         default:
             name: &logic_gate AND Gate
             description: Emits a boolean signal if both inputs are truthy.
+        not:
+            name: NOT
+            description: Inverts the given signal
 
 storyRewards:
     # Those are the rewards gained from completing the store