Simply Jetpacks 2 Wiki

Simply Jetpacks 2 (mod id simplyjetpacks) adds wearable jetpacks that fly on stored energy (FE). Wear a jetpack in your chest armor slot, hold the jump key and you take off; a rich set of controls - hover mode, emergency hover, an adjustable throttle and an on-screen HUD - turns that simple idea into a complete flight system.

The essentials:

• Hold jump to fly - release to descend. Flight drains the jetpack's stored energy.
• Hover mode keeps you at a steady altitude and turns falls into a slow, controlled descent.
• Emergency hover can catch you automatically when you would otherwise fall to your death.
• The throttle trades speed against energy drain, adjustable in flight or from the jetpack screen.
• Tiers, armored variants, fluxpacks and a creative jetpack cover everything from a first short hop to infinite flight.

The original mod is by Tomson124 and StormedPanda (github.com/Tomson124/SimplyJetpacks2), released under the MIT license; this build's source remains available under the same terms.

1. Craft a jetpack and charge it - jetpacks store energy (FE) and will not fly while empty.
2. Wear it in the chest armor slot. The jetpack renders on your back and its flight controls become active.
3. Hold jump to fly. You rise while the key is held and descend when you let go; exhaust particles trail behind you while the engine burns.
4. Toggle hover mode to float in place - ideal for building, mining a cliff face or fighting from the air.
5. Watch the HUD. Your throttle, remaining energy and current engine/hover states are shown on screen, so you always know how much flight time is left.

An empty jetpack will not lift you at all, so keep an eye on the energy readout and recharge before long trips.

• Normal flight - with the engine on, holding jump accelerates you upward; releasing jump lets you fall normally. Horizontal movement works as usual while airborne.
• Hover mode - toggled on/off (default key H). While hovering you keep a steady altitude, and instead of free-falling you sink in a slow, controlled descent - soft landings without fall damage from ordinary heights.
• Emergency hover - a safety net that engages hover automatically to catch a deadly fall. Its toggle has no default key; bind one in the controls menu if you want to switch it on the fly.
• Engine toggle (default key J) - switches the jetpack's engine on or off entirely; with the engine off, jump behaves as vanilla and no energy is drained.

Every toggle announces its new state on screen, so you always know whether the engine, hover mode or charger is active.

The throttle controls how much power the jetpack uses:

• Higher throttle = faster ascent and more speed, at a higher energy drain per second.
• Lower throttle = gentler flight that stretches a charge much further.

Two ways to adjust it:

• In flight with keybinds - default . (period) raises the throttle and , (comma) lowers it, so you can trim power without opening any screen.
• From the jetpack screen - press K to open the jetpack GUI and drag the throttle slider to the exact percentage you want.

The current throttle is always visible on the flight HUD.

All keybinds can be rebound in the vanilla controls menu; the emergency-hover and charger toggles ship unbound and need a key assigned before they can be used from the keyboard (both can also be toggled from the jetpack screen).

Press K while wearing a jetpack to open its screen. It contains:

• The throttle slider - drag to set the exact throttle percentage.
• Engine toggle button - the master on/off switch for flight.
• Hover toggle button - the same hover switch as the H key.
• Emergency-hover toggle button - arm or disarm the automatic fall-catch.
• Charger toggle button - on charger-capable packs, controls whether the pack charges the gear you are wearing.

The screen reflects the pack's live state, so it doubles as a quick status check.

While a jetpack is equipped, a heads-up display shows at a glance:

• Throttle - the current power setting.
• Energy - how much charge the pack has left; an exact numeric readout can be enabled in the config.
• Mode states - whether the engine, hover mode and emergency hover are currently on or off.

The HUD is fully configurable from the client config: it can be disabled, moved to a different screen position, recolored and rescaled (see Configuration).

• Jetpacks store energy (FE) and drain it while flying; the drain rate scales with the throttle.
• Each tier has its own capacity - higher tiers hold more energy and fly faster.
• Charge a jetpack in any machine or device that outputs energy into items.
• Fluxpacks work the other way around: worn in the chest slot, they discharge their stored energy into the equipment you are wearing, keeping energy-using gear topped up in the field.
• The creative jetpack ignores energy entirely - infinite flight with no charging.

An empty jetpack will not fly - the engine simply produces no lift until the pack is recharged.

• Jetpack tiers - jetpacks come in multiple tiers; each step up brings more speed and a larger energy capacity.
• Armored variants - every tier can be upgraded into an armored version that grants armor protection while keeping full flight capability, so you do not have to choose between a chestplate and a jetpack.
• Fluxpacks - wearable charging packs that top up the gear you are wearing instead of flying.
• Creative jetpack - infinite flight with no energy cost, intended for creative building and testing.

Two config files control the mod:

simplyjetpacks-common.toml - gameplay/flight behavior settings (flight tuning and related values).

simplyjetpacks-client.toml - the HUD and other client-side display options, including:

• enableJetpackHud - master switch for the flight HUD.
• HUD position - which corner/area of the screen the HUD is drawn in.
• HUD color - the text color of the HUD.
• HUD scale - the size of the HUD text.
• showThrottle - whether the current throttle is displayed.
• showExactEnergy - show the exact stored-energy number instead of only an approximate readout.

Edit the files and reload the world (or restart the game) for changes to apply.

Why won't my jetpack fly? Check three things: the pack has energy (an empty pack produces no lift), the engine is on (default key J), and the pack is in the chest armor slot.

How do I stop falling to my death? Turn on hover mode (H) before descending - you will sink slowly instead of free-falling. Arm emergency hover for automatic protection.

How do I fly longer on one charge? Lower the throttle (, or the GUI slider) - less speed, much less drain.

Can I wear armor and a jetpack at the same time? Use an armored jetpack variant - it protects like armor while keeping full flight.

What does a fluxpack do? It does not fly - it charges the energy-using equipment you are wearing from its own stored energy.

Can I move or hide the HUD? Yes - simplyjetpacks-client.toml has options for enabling/disabling the HUD and changing its position, color and scale.

Does the mod add any chat commands? No - everything is controlled with keybinds, the jetpack screen and the config files.

Does the mod need other mods installed? No - it has no library dependencies.