Init User Engine – Gamified, Fast, Frontend-First

Init User Engine is a lightweight, no-bloat user system for modern WordPress sites. It’s designed for maximum frontend flexibility and gamified user engagement. All dynamic interfaces are rendered via JavaScript with real-time REST API interaction.

No jQuery. Minimal settings. Smart by default.

What you get:

• Display user avatar and dashboard via shortcode
• Show level, EXP, Coin/Cash, and full user wallet
• Let users check-in daily and receive timed rewards
• Auto-track referral registrations with reward system
• Allow users to buy VIP status using in-site currency
• Built-in inbox for notifications (uses custom DB table)
• Custom avatar support with upload & preview modal
• Send custom notifications to selected users or all members from wp-admin

This plugin is the core user system behind the Init Plugin Suite – optimized for frontend-first interaction, extensibility, and real-time gamification.

GitHub repository: https://github.com/brokensmile2103/init-user-engine

Features

• Avatar shortcode [init_user_engine] + modal dashboard
• Avatar system with upload, preview, and revert support
• EXP & Level system with hookable progression logic
• Coin & Cash wallet system with transaction logs
• Daily check-in with streak milestones & online bonus timer
• Inbox system with pagination, read/claim/delete
• VIP membership system with Coin-based purchase & expiry
• Referral module with cookie-based signup tracking
• Redeem Code / Gift Code module – code in, rewards out
• REST API for all features (read/write/modify)
• Action/filter hooks for full customization
• Pure Vanilla JS frontend – no jQuery, no server bloat
• Admin notification panel to send messages to selected users or all members

Developer Hooks

Filters

• init_plugin_suite_user_engine_online_minutes – Modify required online minutes after check-in
• init_plugin_suite_user_engine_vip_prices – Modify VIP package prices
• init_plugin_suite_user_engine_referral_rewards – Modify referral rewards
• init_plugin_suite_user_engine_localized_data – Modify frontend JS data
• init_plugin_suite_user_engine_calculated_coin_amount – Modify Coin reward before apply
• init_plugin_suite_user_engine_calculated_exp_amount – Modify EXP reward before apply
• init_plugin_suite_user_engine_exp_required – Modify EXP required per level
• init_plugin_suite_user_engine_checkin_milestones – Set milestone streak days
• init_plugin_suite_user_engine_format_inbox – Modify formatted inbox data
• init_plugin_suite_user_engine_render_level_badge – Customize level badge HTML
• init_plugin_suite_user_engine_inbox_insert_data – Modify inbox data before inserting into database
• init_plugin_suite_user_engine_validate_register_fields – Validate or modify registration fields before account creation
• init_plugin_suite_user_engine_after_register – Hook after successful user registration (pass user ID and submitted data)
• init_plugin_suite_user_engine_daily_tasks – Add or modify daily task list and logic
• init_plugin_suite_user_engine_captcha_bank – Extend or modify the internal captcha question bank used for fallback validation
• init_plugin_suite_user_engine_format_log_message – Customize transaction log message display with access to entry data, source, type, and amount
• init_plugin_suite_user_engine_should_keep_original – Override decision to keep original uploaded avatar (GIF or other formats)

Actions

• init_plugin_suite_user_engine_level_up – When user levels up
• init_plugin_suite_user_engine_exp_added – After EXP is added
• init_plugin_suite_user_engine_transaction_logged – After Coin/Cash is logged
• init_plugin_suite_user_engine_exp_logged – After EXP log is recorded
• init_plugin_suite_user_engine_inbox_inserted – After new inbox message
• init_plugin_suite_user_engine_referral_completed – When referral is completed
• init_plugin_suite_user_engine_after_checkin – After user check-in
• init_plugin_suite_user_engine_after_claim_reward – After user claims reward
• init_plugin_suite_user_engine_vip_purchased – After VIP is purchased
• init_plugin_suite_user_engine_add_exp – Triggered when adding EXP via hook
• init_plugin_suite_user_engine_add_coin – Triggered when adding Coin via hook
• init_plugin_suite_user_engine_coin_changed – After user’s Coin balance is updated
• init_plugin_suite_user_engine_cash_changed – After user’s Cash balance is updated
• init_plugin_suite_user_engine_admin_send_notice – When admin sends notification via wp-admin.

REST API Endpoints

Base: /wp-json/inituser/v1/

• POST /register – Create a new user account
• POST /checkin – Daily check-in
• POST /claim-reward – Claim reward after online duration
• GET /transactions – Get Coin/Cash transaction log
• GET /exp-log – Get EXP log
• GET /inbox – Get inbox messages
• POST /inbox/mark-read – Mark a message as read
• POST /inbox/mark-all-read – Mark all as read
• POST /inbox/delete – Delete a single message
• POST /inbox/delete-all – Delete all messages
• POST /vip/purchase – Purchase VIP package
• GET /referral-log – Get referral history
• POST /avatar – Upload new avatar
• POST /avatar/remove – Remove custom avatar and revert to default
• GET /profile/me – Get current user profile
• POST /profile/update – Update profile information
• GET /daily-tasks – Get list of completed daily tasks and rewards
• POST /exchange – Convert Cash → Coin based on exchange rate
• POST /redeem-code – Redeem gift code (returns Coin/Cash rewards)

License

This plugin is licensed under the GPLv2 or later.
You are free to use, modify, and distribute it under the same license.