feat: effect and triggers

src/samples/slay-the-spire-like/system/combat/effects.ts

@@ -79,3 +79,7 @@ export function* getAliveEnemies(state: CombatState) {
         }
     }
 }
+
+export function getCombatEntity(state: CombatState, entityKey: string){
+    return entityKey === 'player' ? state.player : state.enemies.find(e => e.id === entityKey);
+}

src/samples/slay-the-spire-like/system/combat/triggers.ts

@@ -24,7 +24,7 @@ type TriggerTypes = {
     onDraw: {count: number},
     onEffectApplied: { effect: EffectData, entityKey: "player" | string, stacks: number, cardId?: string },
     onHpChange: { entityKey: "player" | string, amount: number},
-    onDamage: { entityKey: "player" | string, amount: number, dealt?: number, prevented?: number},
+    onDamage: { entityKey: "player" | string, amount: number, prevented?: number},
     onEnemyIntent: { enemyId: string },
     onIntentUpdate: { enemyId: string },
 }
@@ -126,12 +126,11 @@ function createTriggers(){
         onDamage: createTrigger("onDamage", async ctx => {
             const entity = ctx.entityKey === "player" ? ctx.game.value.player : ctx.game.value.enemies.find(e => e.id === ctx.entityKey);
             if(!entity || !entity.isAlive) return;
-            const dealt = ctx.dealt = Math.min(Math.max(0,entity.hp), ctx.amount);
-            ctx.prevented = ctx.amount - ctx.dealt;
+            const dealt = Math.min(Math.max(0,entity.hp), ctx.amount - (ctx.prevented || 0));
             await ctx.game.produceAsync(draft => {
                 onEntityPostureDamage(entity, dealt);
             });
-            await triggers.onHpChange.execute(ctx.game,{entityKey: ctx.entityKey, amount: -ctx.amount});
+            await triggers.onHpChange.execute(ctx.game,{entityKey: ctx.entityKey, amount: -dealt});
         }),
         onEnemyIntent: createTrigger("onEnemyIntent", async ctx => {
             const enemy = ctx.game.value.enemies.find(e => e.id === ctx.enemyId);