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4f8400c480
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feat: add 9-level tower evolution system with distinct tier abilities
Extend all 5 towers to 9 upgrade levels, divided into 3 visual and
functional evolution tiers:
- Tier 1 (L1-3, Yellow): Base stats (damage, range, rate).
- Tier 2 (L4-6, Orange): First major ability evolution with pulsing orange aura.
- Tier 3 (L7-9, Blue): Final devastating evolution with blue aura.
Evolutions per tower:
- Arrow Tower:
* L4-6 (Orange): Multishot firing 2-3 arrows simultaneously at distinct targets.
* L7-9 (Blue): 4-arrow multishot + Poison DoT (up to 28 dmg/s).
- Cannon:
* L4-6 (Orange): Incendiary shells applying Burn DoT in splash radius.
* L7-9 (Blue): Flak shells hitting flying units with full splash + burn damage.
- Frost Tower:
* L4-6 (Orange): Permafrost - every 3rd pulse completely freezes enemies (speed = 0).
* L7-9 (Blue): Shatter - frozen enemies receive +50% damage from all sources.
- Tesla Tower:
* L4-6 (Orange): Chain lightning applies stun on each hit.
* L7-9 (Blue): Lightning Storm - every 4th shot strikes and stuns ALL enemies in range.
- Laser Tower:
* L4-6 (Orange): Prism refraction splitting the beam onto 2-3 secondary targets.
* L7-9 (Blue): Piercing beam penetrating all enemies in a line up to 280px range.
Engine & Renderer updates:
- Added DoT tick handling (poison/burn) and freeze/stun status effects.
- Added visual indicators for frozen enemies (ice spikes) and DoT particles.
- Added 3-slot tier-colored pips on tower base plates + pulsating evolution auras.
- Updated TowerPanel with 9-star tier display (★★★ yellow, ★★★ orange, ★★★ blue)
and dynamic special ability descriptions.
Testing & Validation:
- Added `scripts/test-evolution.mts` covering all 10 evolved mechanics (all green).
- Verified lockstep multiplayer determinism via `scripts/test-mp.mts`.
- Verified solo campaign balance preservation via `scripts/sim.mts`.
- Full TypeScript typecheck and production build passing.
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2026-08-16 13:54:09 +02:00 |
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