add dummy mailbox interaction (#40)

src/interactions/map_start/index.js

@@ -1,11 +1,13 @@
 import { interactionWithBruno } from './bruno.interaction';
 import { enterMapCityInteraction } from './enterMapCity.interaction';
+import { interactionWithMainboxMainArea } from './mailboxMainArea.interaction';
 import { restroomInteractions } from './restroom.interactions';
 
 const interactions = [
     restroomInteractions,
     interactionWithBruno,
     enterMapCityInteraction,
+    interactionWithMainboxMainArea,
     // Add more interactions here
 ];
 

src/interactions/map_start/mailboxMainArea.interaction.js

@@ -0,0 +1,24 @@
+import { displayDialogue } from '../../utils';
+
+export const getDummyText = () => {
+    // 0 to 10 (inclusive)
+    const num = Math.floor(Math.random() * 11);
+    if (num > 1) {
+        return `You have ${num} messages in your mailbox`;
+    }
+    if (num === 1) {
+        return `You have ${num} message in your mailbox`;
+    }
+    if (num === 0) {
+        return `You have no messages in your mailbox`;
+    }
+};
+
+export const interactionWithMainboxMainArea = (player, k, map) => {
+    player.onCollide('mailbox_mainArea', () => {
+        player.isInDialog = true;
+        displayDialogue(getDummyText(), () => {
+            player.isInDialog = false;
+        });
+    });
+};