Overview

package main

import (
	"errors"
	"github.com/argus-labs/starter-game-template/cardinal/component"
	"github.com/argus-labs/starter-game-template/cardinal/msg"
	"github.com/argus-labs/starter-game-template/cardinal/query"
	"github.com/argus-labs/starter-game-template/cardinal/system"
	"github.com/rs/zerolog/log"
	"pkg.world.dev/world-engine/cardinal"
)

func main() {
	w, err := cardinal.NewWorld()
	if err != nil {
		log.Fatal().Err(err).Msg("")
	}

	// Register components
	// Components can be registered in any order. Each component must have a unique name.
	Must(
		// Example component registration - order doesn't matter
		cardinal.RegisterComponent[component.Player](w),
		cardinal.RegisterComponent[component.Transform](w),
		cardinal.RegisterComponent[component.Health](w),
		cardinal.RegisterComponent[component.Inventory](w),
	)

	// Register messages (user actions)
	// Message names should be descriptive and follow the pattern: "{action}_{target}"
	Must(
		// Player management messages
		cardinal.RegisterMessage[msg.CreatePlayerRequest, msg.CreatePlayerResponse](w, "create_player"),
		cardinal.RegisterMessage[msg.UpdatePlayerRequest, msg.UpdatePlayerResponse](w, "update_player"),

		// Combat messages
		cardinal.RegisterMessage[msg.AttackPlayerRequest, msg.AttackPlayerResponse](w, "attack_player"),
		cardinal.RegisterMessage[msg.DefendPlayerRequest, msg.DefendPlayerResponse](w, "defend_player"),
	)

	// Register queries
	// NOTE: You must register your queries here for it to be accessible.
	Must(
		cardinal.RegisterQuery[query.WorldVarsRequest, query.WorldVarsResponse](w,
		"world-vars",
		query.WorldVars,
	))

	// Register systems
	// Systems are executed sequentially in registration order.
	// Follow this recommended order:
	// 1. Input/Message processing systems
	// 2. Game state update systems
	// 3. Output/Effect systems
	Must(cardinal.RegisterSystems(w,
		// 1. Input processing
		system.MessageProcessingSystem,
		system.PlayerInputSystem,

		// 2. Game state updates
		system.MovementSystem,
		system.CombatSystem,

		// 3. Effects and outputs
		system.EffectSystem,
		system.NotificationSystem,
	))

	// Start the game shard
	// This will begin the game loop and start processing ticks
	Must(w.StartGame())
}

func Must(err ...error) {
	e := errors.Join(err...)
	if e != nil {
		log.Fatal().Err(e).Msg("")
	}
}