refactor: mass refactoring

src/core/context.ts

@@ -0,0 +1,38 @@
+import {createModel, Signal, signal} from '@preact/signals-core';
+import {createEntityCollection} from "../utils/entity";
+import {Part} from "./part";
+import {Region} from "./region";
+
+export type Context = {
+    type: string;
+}
+
+export const GameContext = createModel((root: Context) => {
+    const parts = createEntityCollection<Part>();
+    const regions = createEntityCollection<Region>();
+    const contexts = signal([signal(root)]);
+    function pushContext(context: Context) {
+        const ctxSignal = signal(context);
+        contexts.value = [...contexts.value, ctxSignal];
+        return context;
+    }
+    function popContext() {
+        contexts.value = contexts.value.slice(0, -1);
+    }
+    function latestContext<T extends Context>(type: T['type']){
+        for(let i = contexts.value.length - 1; i >= 0; i--){
+            if(contexts.value[i].value.type === type){
+                return contexts.value[i] as Signal<T>;
+            }
+        }
+    }
+    
+    return {
+        parts,
+        regions,
+        contexts,
+        pushContext,
+        popContext,
+        latestContext,
+    }
+})