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

import {createMiddlewareChain} from "../utils/middleware";
import {CombatGameContext} from "./types";
import {getAliveEnemies} from "@/samples/slay-the-spire-like/system/combat/utils";
import {
    onEntityEffectUpkeep,
    onPlayerItemEffectUpkeep
} from "@/samples/slay-the-spire-like/system/combat/effects";
import {promptMainAction} from "@/samples/slay-the-spire-like/system/combat/prompts";

type TriggerTypes = {
    onCombatStart: {},
    onTurnStart: { entityKey: "player" | string, },
    onTurnEnd: { entityKey: "player" | string, },
    onShuffle: { entityKey: "player" | string, },
    onCardPlayed: { cardId: string,  },
    onCardDiscarded: { cardId: string,  },
    onCardDrawn: { cardId: string,  },
    onEffectApplied: { effectId: string, entityKey: "player" | string, stacks: number, },
}

function createTriggers(){
    return {
        onCombatStart: createTrigger("onCombatStart"),
        onTurnStart: createTrigger("onTurnStart"),
        onTurnEnd: createTrigger("onTurnEnd"),
        onShuffle: createTrigger("onShuffle"),
        onCardPlayed: createTrigger("onCardPlayed"),
        onCardDiscarded: createTrigger("onCardDiscarded"),
        onCardDrawn: createTrigger("onCardDrawn"),
        onEffectApplied: createTrigger("onEffectApplied"),
    }
}
export type Triggers = ReturnType<typeof createTriggers>
export function createStartWith(build: (triggers: Triggers) => void){
    const triggers = createTriggers();
    build(triggers);
    return async function(game: CombatGameContext){
        await triggers.onCombatStart.execute(game,{});
        
        while(true){
            await triggers.onTurnStart.execute(game,{entityKey: "player"});
            await game.produceAsync(draft => {
                onEntityEffectUpkeep(draft.player);
                onPlayerItemEffectUpkeep(draft.player);
            });
            while(true){
                const action = await promptMainAction(game);
                if(action.action === "end-turn") break;
                //TODO resolve action here
            }
            // TODO discard cards here
            await triggers.onTurnEnd.execute(game,{entityKey: "player"});
            // TODO recover energy, draw new cards here
            
            for(const enemy of getAliveEnemies(game.value)){
                await triggers.onTurnStart.execute(game,{entityKey: enemy.id});
            }
            await game.produceAsync(draft => {
                for(const enemy of getAliveEnemies(game.value)){
                    onEntityEffectUpkeep(enemy);
                }
            });
            // TODO execute enemy intent, then update with new one here
            for(const enemy of getAliveEnemies(game.value)){
                await triggers.onTurnEnd.execute(game,{entityKey: enemy.id});
            }
        }
    }
}

function createTrigger<TKey extends keyof TriggerTypes>(event: TKey) {
    type Ctx = TriggerTypes[TKey] & { event: TKey, game: CombatGameContext };
    const {use, execute} = createMiddlewareChain<Ctx>();
    return {
        use,
        execute: (game: CombatGameContext, ctx: TriggerTypes[TKey]) => execute({...ctx, event, game}),
    }
}