45 lines
2.5 KiB
Markdown
45 lines
2.5 KiB
Markdown
---
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type: User Story
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title: "US-002: Unlock Creeper Aura ranks"
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description: Protect blocks and modify creeper damage according to a player's earned aura rank.
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status: done
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---
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# US-002: Unlock Creeper Aura ranks
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As a **player**, I want Creeper Aura to become stronger as I defeat creepers so that I progressively master their explosions.
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## Default progression
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| Current state | Kills needed to unlock next rank | Damage to protected player | Creeper block damage |
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| --- | ---: | ---: | --- |
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| Locked | 25 to unlock I | 1× | Normal |
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| Creeper Aura I | 100 to unlock II | 3× | Prevented |
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| Creeper Aura II | 100 to unlock III | 2× | Prevented |
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| Creeper Aura III | 100 to unlock IV | 1.5× | Prevented |
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| Creeper Aura IV | 100 to unlock V | 1× | Prevented |
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| Creeper Aura V | 100 to unlock VI | 0.5× | Prevented |
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| Creeper Aura VI | Maximum rank | 0× | Prevented |
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## Acceptance criteria
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- [x] A player unlocks rank I after 25 kills by default; subsequent ranks require 100 kills each by default.
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- [x] Unlocking a rank resets current-tier progress to zero.
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- [x] A player below rank I receives normal creeper explosion behavior.
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- [x] An aura protects blocks when a player with rank I or higher is within 25 blocks of a creeper at explosion time, including at exactly 25 blocks.
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- [x] Block protection does not require the aura player to be hit by or have line of sight to the explosion.
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- [x] An activated aura prevents that creeper explosion from breaking or removing blocks for everyone affected by the explosion.
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- [x] Players beyond 25 blocks and players whose aura is locked do not activate block protection.
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- [x] Other nearby players and entities continue to receive their normal creeper explosion effects unless they have their own aura damage modifier.
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- [x] The protected player's rank multiplier is applied to vanilla creeper explosion damage before armor, enchantments, resistance, and difficulty mitigation.
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- [x] At rank VI, the protected player's creeper explosion damage event is cancelled so that damage and knockback are nullified.
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- [x] Charged creepers obey the same aura rules while retaining their vanilla base explosion strength.
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- [x] Explosions from TNT, beds, respawn anchors, and non-creeper entities are unchanged.
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- [x] Simultaneous exposure of players with different aura ranks is deterministic and tested.
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## Related
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- [Track creeper defeats](us-001-track-creeper-defeats.md)
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- [Configure aura progression](us-006-configure-aura-progression.md)
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- [User-story catalog](index.md)
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