Scale build plan (construct block) with construct and deconstruct progress

[EggleEgg]

No more spending 2 minutes building a very expensive block or core just for a flare to destroy it instantly because it has 10 hp

Max buildplant health is 10 by default as before, but with an optional variable to set plan max health to a % of the block s health (constructHealthMultiplier).
Example: if a block has 5.8k hp and the multiplier is 0.5, the buildplan s health will increase with progress (0-1) up to its 2.9k maxhealth. If the multiplier is <=0 (default) it will only increase up to 10

Blocks with constructHealthMultiplier:

• Impact reactor, neoplasia reactor, foreshadow, spectre, meltdown, scathe, smite, malign, multiplicative reconstructor, tetrative reconstructor -> 0.5
• Core shard, foundation, nucleus, bastion, citadel, acropolis -> 0.65

2026-01-1918-24-58-ezgif.com-gif-maker.mp4

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And a release https://github.com/EggleEgg/Mindustry/releases/tag/34trre

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[way-zer]

The PR looks good, and I think it can be applied to all buildings.

However, this function seems to need some optimization:

1. Why use tile.build instead of this?
2. previousHealth and damaged are not persisted or synchronized.

[way-zer]

Perhaps we could implement like this:

• old = health / maxHealth
• maxHealth = xxxx
• health = old * maxHealth

[LeoSko]

I implemented this back in v6 for Ranked server, just would like to point out for thorough testing on building, then deconstructing building mid-build, then building it a bit up again until built, etc. Especially when mid-built the ConstructBlock got some damage (then, again, it started to de/re-construct by the player).