From b67d4eb5d08cfa456f106fbd4e137213de8b2ae4 Mon Sep 17 00:00:00 2001
From: Fen Dweller <chemicalcrux@gmail.com>
Date: Tue, 4 Aug 2020 22:50:43 -0400
Subject: [PATCH] Add an AI system, with only random AI for now

---
 src/components/Combat.vue    |  9 +++++++++
 src/components/Statblock.vue |  7 ++++++-
 src/game/ai.ts               | 30 ++++++++++++++++++++++++++++++
 src/game/creature.ts         |  2 ++
 4 files changed, 47 insertions(+), 1 deletion(-)
 create mode 100644 src/game/ai.ts

diff --git a/src/components/Combat.vue b/src/components/Combat.vue
index 30e0552..3878639 100644
--- a/src/components/Combat.vue
+++ b/src/components/Combat.vue
@@ -57,6 +57,7 @@ import { LogEntry, LogLine } from '@/game/interface'
 import Statblock from './Statblock.vue'
 import ActionButton from './ActionButton.vue'
 import { Side, Encounter } from '@/game/combat'
+import { NoAI } from '../game/ai'
 
 @Component(
   {
@@ -182,6 +183,14 @@ export default class Combat extends Vue {
           this.scrollParentTo(target)
         }
       })
+
+      if (!(this.encounter.currentMove.ai instanceof NoAI)) {
+        if (this.encounter.currentMove.side === Side.Heroes) {
+          this.executedLeft(this.encounter.currentMove.ai.decide(this.encounter.currentMove, this.encounter))
+        } else {
+          this.executedRight(this.encounter.currentMove.ai.decide(this.encounter.currentMove, this.encounter))
+        }
+      }
     }
   }
 
diff --git a/src/components/Statblock.vue b/src/components/Statblock.vue
index f7dd655..196586d 100644
--- a/src/components/Statblock.vue
+++ b/src/components/Statblock.vue
@@ -60,6 +60,9 @@
       <button v-if="subject.perspective === POV.Third" @click.stop="subject.perspective = POV.Second">Second-person</button>
       <button v-if="subject.perspective === POV.First" @click.stop="subject.perspective = POV.Third">Third-person</button>
       <button v-if="subject.perspective === POV.Second" @click.stop="subject.perspective = POV.First">First-person</button>
+      <select @change="subject.ai = new ais[$event.target.selectedIndex]()">
+        <option v-for="(ai, index) in ais" :key="'ai-' + index">{{ ai.name }}</option>
+      </select>
     </div>
   </div>
 </template>
@@ -68,6 +71,7 @@
 import { Component, Prop, Vue, Watch, Emit } from 'vue-property-decorator'
 import { Creature } from '@/game/creature'
 import { POV } from '@/game/language'
+import { NoAI, RandomAI } from '@/game/ai'
 import { Stats, Stat, StatIcons, StatDescs, Vigor, VigorIcons, VigorDescs, VoreStatDescs, VoreStatIcons, VisibleStatus } from '@/game/combat'
 import ContainerView from './ContainerView.vue'
 import tippy, { delegate, createSingleton } from 'tippy.js'
@@ -79,7 +83,8 @@ import 'tippy.js/dist/tippy.css'
   },
   data () {
     return {
-      POV: POV
+      POV: POV,
+      ais: [NoAI, RandomAI]
     }
   },
   methods: {
diff --git a/src/game/ai.ts b/src/game/ai.ts
new file mode 100644
index 0000000..64eef09
--- /dev/null
+++ b/src/game/ai.ts
@@ -0,0 +1,30 @@
+import { Creature } from './creature'
+import { Encounter } from './combat'
+import { LogEntry } from './interface'
+
+export interface AI {
+  name: string;
+  decide (actor: Creature, encounter: Encounter): LogEntry;
+}
+
+export class NoAI implements AI {
+  name = "No AI"
+  decide (actor: Creature, encounter: Encounter): LogEntry {
+    throw new Error("This AI cannot be used.")
+  }
+}
+
+/**
+ * The RandomAI is **COMPLETELY** random. Good luck.
+ */
+export class RandomAI implements AI {
+  name = "Random AI"
+  decide (actor: Creature, encounter: Encounter): LogEntry {
+    const actions = encounter.combatants.filter(enemy => enemy !== actor).flatMap(enemy => actor.validActions(enemy).map(action => ({
+      target: enemy,
+      action: action
+    })))
+    const chosen = actions[Math.floor(Math.random() * actions.length)]
+    return chosen.action.execute(actor, chosen.target)
+  }
+}
diff --git a/src/game/creature.ts b/src/game/creature.ts
index 6458a8a..7c5db97 100644
--- a/src/game/creature.ts
+++ b/src/game/creature.ts
@@ -4,6 +4,7 @@ import { LogEntry, LogLines } from './interface'
 import { Vore, VoreContainer, VoreType } from './vore'
 import { Item, EquipmentSlot, Equipment } from './items'
 import { PassAction } from './combat/actions'
+import { AI, NoAI } from './ai'
 
 export class Creature extends Vore implements Combatant {
   actions: Array<Action> = [];
@@ -16,6 +17,7 @@ export class Creature extends Vore implements Combatant {
   side: Side;
   title = "Lv. 1 Creature";
   equipment: Map<EquipmentSlot, Equipment> = new Map()
+  ai: AI = new NoAI()
 
   constructor (name: Noun, kind: Noun, pronouns: Pronoun, stats: Stats, preyPrefs: Set<VoreType>, predPrefs: Set<VoreType>, mass: number) {
     super(name, kind, pronouns, stats, preyPrefs, predPrefs, mass)