Refactoring

frontend/src/helpers.ts

@@ -0,0 +1,52 @@
+import { HitType, HitDispatchType } from "./interfaces";
+
+export const hitReducer = (formObject: HitType[], action: HitDispatchType) => {
+    switch (action.type) {
+  
+      case 'fireMissle': {
+        const result = [...formObject, action.payload];
+        return result;
+      }
+  
+      default:
+        return formObject;
+    }
+}
+export const fieldIndex = (count: number, x: number, y: number) => y*(count+2)+x;
+export const cornerCN = (count: number, x: number, y: number) => {
+    if (x === 0 && y === 0)
+        return 'left-top-corner';
+    if (x === count+1 && y === 0)
+        return 'right-top-corner';
+    if (x === 0 && y === count+1)
+        return 'left-bottom-corner';
+    if (x === count+1 && y === count+1)
+        return 'right-bottom-corner';        
+    return '';
+};
+export const borderCN = (count: number, x: number, y: number) => {
+    if (x === 0)
+        return 'left';
+    if (y === 0)
+        return 'top';
+    if (x === count+1)
+        return 'right';
+    if (y === count+1)
+        return 'bottom';
+    return '';
+};
+export const initlialTarget = {
+    show: false,
+    x: 0,
+    y: 0
+};
+export const initlialTargetPreview = {
+    newX: 0,
+    newY: 0,
+    shouldShow: false,
+    appearOK: false,
+    eventReady: true,
+    show: false,
+    x: 0,
+    y: 0
+};