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Spell Engine Extension (RPG Series Tweaks)
This is an extension to the Spell Engine mod by Daedelus. On its own it changes nothing in the game, but mod and data pack authors have more possibilities when designing spells.
Features include:
- Limiting casting with individual items depending on the hand they are held in
- Health cost for spells
- Mana cost for spells (using Mana Attributes)
- Stamina cost for spells (using Stamina Attributes)
- 3 generic spell schools (melee, ranged and magic)
- 9 entity attributes that customize cast spells (eg. projectile count, bounce amount, etc.)
- various config options to customize the spell hotbar
- and a few more little (and optional) tweaks
Detailed information can be found here.
All Versions
+ Add Version| Name | Game version | Platforms | Published | Downloads | Actions |
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2.17.0
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2.16.2
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2.16.1
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2.16.0
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2.15.1
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2.15.0
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2.14.0
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2.13.0
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2.12.0
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2.11.2
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2.11.1
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2.11.0
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2.10.2
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2.10.1
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1.3.1
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2.10.0
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2.9.0
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2.8.0
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2.7.1
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2.7.0
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2.6.0
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2.5.5
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2.5.4
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2.5.3
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2.5.2
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2.5.1
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2.5.0
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2.4.6
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2.4.5
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2.4.4
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2.4.3
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2.4.1
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2.4.0
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1.3.0
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1.2.0
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2.2.0
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2.1.0
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2.0.0
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1.1.2
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1.1.1
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1.0.0
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[2.17.2] spellengine-extension 2.17.2
by TheRedBrain on Sep 29, 2026
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# 2.17.2
This version is marked as compatible with future versions of Spell Engine. SEE has become much more stable in recent updates, so I feel confident in doing this. Larger SE updates will certainly require a SEE update, but this should reduce the amount of "version bump updates" :D
- now works with Spell Engine 1.10.9+
This version is marked as compatible with future versions of Spell Engine. SEE has become much more stable in recent updates, so I feel confident in doing this. Larger SE updates will certainly require a SEE update, but this should reduce the amount of "version bump updates" :D
[2.17.1] spellengine-extension 2.17.1
by TheRedBrain on Sep 29, 2026
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# 2.17.1
- now works with Spell Engine 1.10.8
[2.17.0] 2.17.0
by TheRedBrain on Sep 18, 2026
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# 2.17.0
## Additions
## Technical
- now works with Spell Engine 1.10.6
## Additions
- added channeling status effect cost, using the existing custom status effect cost and the new boolean field "apply_channeling_effect_cost" added to 'spell.cost'
## Technical
- moved several registered features out of the main class, including:
- "spellengineextension:provide_spells" enchantment entity effect
- "spellengineextension:spell_container_predicate" data component predicate
- "spellengineextension:has_conditional_spell_container" data component
[2.16.2] 2.16.2
by TheRedBrain on Aug 11, 2026
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# 2.16.2
- now works with Spell Engine 1.9.16
[2.16.1] 2.16.1
by TheRedBrain on Jul 29, 2026
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# 2.16.1
- now works with Spell Engine 1.9.14
[2.16.0] 2.16.0
by TheRedBrain on Mar 25, 2026
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# 2.16.0
## Changes
## Fixes
- now works with Spell Engine 1.9.9
## Changes
- removed the server config option to disable the auto swap feature (this feature was removed from Spell Engine)
- spell modifiers can now remove the "custom_effect_cost" of a spell, if the "replaced_effect_cost_id" field is set to an empty string.
- re-enabled the "replaced_decrement_effect_cost_amount" Spell.Modifier field. It's default is now -2, which means the modifier is ignored. Values of -1 and above replace the "decrement_effect_cost_amount" of the modified spell. If multiple modifiers are applied, only the last one counts.
## Fixes
- fixed issues with some spell hotbar display options
- fixed an issue where the built-in compat data pack for the RPG Series mods did not recognise staff/wand weapon skills
[2.15.1] 2.15.1
by TheRedBrain on Mar 11, 2026
Download
# 2.15.1
## Fixes
## Fixes
- fixed crash when casting modified spells
- temporarily disabled the "replaced_decrement_effect_cost_amount" Spell.Modifier field. This feature is currently not working as intended and needs a complete redesign, which requires more time than I have right now.
[2.15.0] 2.15.0
by TheRedBrain on Mar 11, 2026
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# 2.15.0
## Changes
- now works with Spell Engine 1.9.8
## Changes
- tweaked some default values of the client config
- changed "spellengineextension:provide_spells" enchantment effect to apply different spell lists depending on the enchantment level. If the level is higher than the amount of lists defined, the last list is used.
[2.14.0] 2.14.0
by TheRedBrain on Mar 05, 2026
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# 2.14.0
## Additions
## Technical
- now works with Spell Engine 1.9.5
## Additions
- added "spellengineextension:provide_spells" enchantment effect
- added server config options to individually toggle position and orientation locking for movement locking spell casting.
- added client config option 'should_spell_hotbar_use_key_replace_first_number_slot'. If set to 'false' all 9 number slots of the spell hotbar are used, even if the 'use key' slot is also used.
## Technical
- made huge progress in making the mod easier to maintain. Thanks to new events added by Spell Engine, several mixins could be removed. Other mixins were modernized to be much more robust.
[2.13.0] 2.13.0
by TheRedBrain on Mar 01, 2026
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# 2.13.0
## Additions
## Changes
- now works with Spell Engine 1.9.0
## Additions
- added a built-in data pack that enables SSE mechanics for the RPG Series content mods
## Changes
- removed the "spellengineextension:proxy_pool" data component. This mechanic is now supported by vanilla Spell Engine via the reworked "spell_engine:spell_container" data component.
- changed default values of some config settings
[2.12.0] 2.12.0
by TheRedBrain on Jan 23, 2026
Download
# 2.12.0
## Additions
## Changes
- now works with Spell Engine 1.8.19
## Additions
- added "spellengineextension:spell_container_predicate" data component predicate
## Changes
- reworked the ProvidesSpell status effect API. It now optionally provides spells based on the effect amplifier.
[2.11.2] 2.11.2
by TheRedBrain on Dec 10, 2025
Download
# 2.11.2
- now works with Spell Engine 1.8.16
[2.11.1] 2.11.1
by TheRedBrain on Nov 01, 2025
Download
# 2.11.1
- now works with Spell Engine 1.8.10
[2.11.0] 2.11.0
by TheRedBrain on Oct 04, 2025
Download
# 2.11.0
- now works with Spell Engine 1.8.2
- added "prevent_casting_of_all_spells" boolean field to the "spellengineextension:has_conditional_spell_container" item component
- added "fall_back_spell_ids" list to the "spellengineextension:has_conditional_spell_container" item component
- added client config options to disable the "show details" tooltip hint for spell containers
- added optional integration for "Attack Range Attribute"
- health/mana/stamina spell costs are no longer checked/applied for players in creative mode
- bumped Mixin Squared version, hopefully fixing crashes when used with Sinytra Connector
- fixed custom spell cost tooltips
[2.10.2] 2.10.2
by TheRedBrain on Sep 15, 2025
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# 2.10.2
- now works with Spell Engine 1.7.3
- fixed "spellengineextension:has_conditional_spell_container" integration with RPG Inventory
[2.10.1] 2.10.1
by TheRedBrain on Aug 25, 2025
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# 2.10.1
- fixed mana spell cost
[1.3.1] 1.3.1
by TheRedBrain on Aug 25, 2025
Download
# 1.3.1
- now works with Spell Engine 0.15.12
[2.10.0] 2.10.0
by TheRedBrain on Aug 21, 2025
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# 2.10.0
- now works with Spell Engine 1.7.1
- added 'ProvidesSpell' status effect API
- added movement locking spell casting, enabled via a server config option and the "spellengineextension:enables_movement_locking_during_casting" spell tag.
- added "add_item_use_stamina_cost_attribute_value" boolean field to 'spell.cost'
- added channeling health/mana/stamina costs, using the existing amounts and new boolean fields added to 'spell.cost'
- added "check_mana" and "check_stamina" boolean fields to 'spell.cost', which allow spell casting when the corresponding resource is above 0 (the existing checks only allow casting when the resource is above the cost)
- added "check_effect_cost" boolean field to 'spell.cost'
- added "after_casting_movement_locking_ticks" int field to 'spell.active.cast', the movement locking for this spell is extended by this amount of ticks
- added "is_two_handed_valid" condition to the "spellengineextension:has_conditional_spell_container" item component, which is true when the item is in the main hand and the offhand is empty
- added "is_dual_wielding_valid" condition to the "spellengineextension:has_conditional_spell_container" item component, which is true when the item is in the main hand and the offhand contains an item that is in the tag defined by the "dual_wielding_tag" field
- added "replaced_effect_cost_id" and "replaced_decrement_effect_cost_amount" fields to 'spell.modifier'
- added client config option to hide the use_key spell hotbar slot. This does not prevent casting the spell in that slot.
- added server config option to disable the use_key spell hotbar slot restriction
- removed the server config option added in the last update, this functionality is now controlled by a spell tag ("spellengineextension:can_be_in_use_item_spell_hotbar_slot")
- improved optional mod integrations, fixing several issues where the mods were still required
[2.9.0] 2.9.0
by TheRedBrain on Aug 10, 2025
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# 2.9.0
- added "spellengineextension:has_conditional_spell_container" item component, which can be used to disable the spell container of an item, depending on the hand it's held in (supports RPG Inventory)
- added "spellengineextension:proxy_pool" item component, which can be used to limit what spells a spell casting item can cast
- added config option to limit the types of spells that can be in the 'use key' spell hotbar slot (using spell tier)
[2.8.0] 2.8.0
by TheRedBrain on Jul 28, 2025
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# 2.8.0
- now works with Spell Engine 1.7.0
- added compatibility with Merged Items
- merging items can optionally also merge their spell containers
- added custom spell modifiers
- includes health/mana/stamina cost, direct damage/healing
[2.7.1] 2.7.1
by TheRedBrain on Jun 20, 2025
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# 2.7.1
- fixed spell modifier attributes persistence (Thanks @KevinCz)
[2.7.0] 2.7.0
by TheRedBrain on May 22, 2025
Download
# 2.7.0
- now works with Spell Engine 1.6.12
- added client config option to disable rendering of items in the spell hot bar
[2.6.0] 2.6.0
by TheRedBrain on May 14, 2025
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# 2.6.0
- now works with Spell Engine 1.6.10
- added several client config options to customize the spell hotbar
- added setter methods for fields added to the spell.json. These should allow data generation of those fields.
[2.5.5] 2.5.5
by TheRedBrain on Mar 31, 2025
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# 2.5.5
- now works with Spell Engine 1.6.2
- fixed a crash that could occur when rendering tooltips
[2.5.4] 2.5.4
by TheRedBrain on Mar 28, 2025
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# 2.5.4
- now works with Spell Engine 1.6.1
[2.5.3] 2.5.3
by TheRedBrain on Mar 28, 2025
Download
# 2.5.3
- now works with Spell Engine 1.6.0
- rewrote several mixins to make the mod easier to maintain.
[2.5.2] 2.5.2
by TheRedBrain on Mar 02, 2025
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# 2.5.2
- now works with Spell Engine 1.5.2
[2.5.1] 2.5.1
by TheRedBrain on Feb 27, 2025
Download
# 2.5.1
- now works with Spell Engine 1.5.1
[2.5.0] 2.5.0
by TheRedBrain on Feb 14, 2025
Download
# 2.5.0
- now works with Spell Engine 1.5.0
- re-enabled "consume_self" Spell.Cost option, as it is not redundant to the capabilities of Spell Engine
[2.4.6] 2.4.6
by TheRedBrain on Feb 03, 2025
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# 2.4.6
- now works with Spell Engine 1.4.5+1.21.1
