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d176e09 Sep 15, 2013
@TrueBrain @glx22 @wangds
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Enhancement over Dune2
======================
When OpenDUNE is started in enhanced mode (default), a lot of bugs and
problems which are in the original Dune2 version, are fixed.
Below is the complete listing of all those bugs and problems, per category.
Every entry describes the problem, where the solution is in all cases
obvious by the way the problem is described and therefore the solution is
not mentioned as such.
Structure
---------
- When building a Wall, the owner-bits are not cleared correctly, which in
theory could mean a Wall build by you could show up as owned by Sadukar.
- When building a structure completely on slabs, it still degrades. This seems
in contrast with the idea of slabs.
- When building a structure, only the fog is removed (with a radius of 2) from
the first tile defined in the layout of the structure. This is mostly
noticable with Palace and Oil Refinery, leaving parts of them in the fog.
- Windtraps that have less than 50% hp still produce 50% of the power, even so
the GUI tells you differently. Of course the GUI makes more sense in this
case.
- Repair cost calculation is unfair. Dune2 uses a 256 float-resolution,
meaning that you get rounding errors very fast. In result, Palace costs
nothing to repair, and a windtrap costs 2 credits instead of 3 credits per
repair tick. In detail: ((2 * 256 / hitpoints) * credits + 128) / 256. The
first part causes rounding errors.
- If one structure gives a script error, all structures after it in the linked
list are not handled. This doesn't really seem correct.
- In Script function which finds the closest unit to target, it doesn't pick
the closest unit within range, but the one with the highest index within
range.
- Too many tile colours are remapped with house colours, causing graphical
issues with the IX building. It maps 0x90 .. 0xA0 instead of 0x90 .. 0x96.
- When taking over a building (by having an infantry walk in it while the
structure is on low hitpoints), your own units keep firing at it, and will
most likely destroy it.
- When you attack the structure of the AI, the idea is that they massively
start to attack you (payback and stuff). To do this, Dune2 searches all
Units with type 0 (Carry-alls), instead of type 0xFFFF (all units).
WARNING: this glitch makes the game much easier in its original form.
- A structure in production also counts towards your storable spice,
producing power, and/or requiring power. It does not check if the structure
is in fact placed on the map.
- If a structure gets damaged during upgrading, pressing the "Upgrading" button
silently starts the repair of the structure, and doesn't cancel upgrading.
- Fog is removed around the top left corner instead of the center of a
structure.
- The range of a turret was calculated from the top left corner instead of the
center of the structure.
- Fog was not removed from around captured structures.
Unit
----
- Once a Unit enters a tile on which it starts to wobble, it will never stop
wobbling, even if it enters a tile where it shouldn't wobble.
- When a Unit enters a Structure, the last tile the Unit was on becomes
selected rather than the entire Structure.
- Deviated units always belong to Ordos, no matter who did the deviating.
- Saboteurs tend to forget their goal, depending on terrain and game speed:
to blow up on reaching their destination.
Scenario
--------
- A mistake in reading the '+' causes repeat for reinforcements to be always
false. In result reinforcement is only send once.
- The structure '% hitpoints' is ignored. In result all structures always
have 100% hitpoints.
House
-----
- When you have a refinery and lost all your harvesters, you get a new one even
if you are currently building one in heavy vehicle factory.
- Silo credit capping is done outside the main house loop, causing it to only
update the house which owns the latest structure. This allows you to go
over your silo capacity most of the time, and then losing it all of a
sudden (when you start building a structure).
Teams
-----
- If a team gives a script error, all other teams are aborted.
SaveLoad
--------
- The save routine allowed a NAME chunk up to 65536 bytes, where 255 bytes
should be sufficient for any sane name (both excluding the \0).
General
-------
- The screen telling if you have the security question wrong/right is there
for such short time, you never really see it.
- When loading a game, the fadein is barely visible because it is against the
screen how it will turn out, minus the selection of an active building.
- After visiting Mentat (the help) window, auto-repeat of keys gets disabled.
- Dune2 depends on slow CPUs to limit the rate mouse clicks are handled.
Map
---
- When a unit moves over the top of a mound, you never get abandoned vehicles
nor hiding enemy units
- When getting free Trikes on the map, you never got ownership of them. The
parameter order is switched, where the type of the unit becomes the number
of the house, and the house becomes the value of Trike (13). This also
means that these vehicles read/write outside the house struct, which in
terms results in random artifects.