Unit stats

• All wheeled and tracked units can be picked up for repair.
• All wheeled and tracked units have a 25% chance to spawn a soldier when dying, except Harvester, which has 50% chance.
• All tracked units can run over and crush units on foot.

• Sandworms die when losing half their hitpoints.
  • In version 1.00 to 1.06, a sandworm will disappear if it devours 4 units.
  • In version 1.07 and above, it will disappear after it devours 3 units.

• Infantry and Troopers die when losing half their hitpoints. Infantry turns into Soldier and Troopers into Trooper.

• Saboteurs deal 500 damage to any structure they enter. This is enough to destroy all structures except for Palaces.
• Soldier/Infantry/Trooper/Troopers can enter and try to take over structures except Barracks, WOR, Outpost, House of IX and Palace.
  • If the structure has <25% health, it will be taken over.
  • If the structure has >=25% health, it will receive damage: double the health of the entering unit, or half the structure's remaining health, whichever is smaller.

• Sonic Tanks are immune to Sonic Blasts.
• Sonic Blasts work differently from all other attacks. They deal damage during their move function, not their impact. The blast starts with 60 hitpoints, and loses one hitpoint every gametic. Every gametic the blast is in contact with a unit or structure, it receives blast_hitpoints / 4 + 1 damage.
  • The closer a unit/structure is to the Sonic Tank, the more damage it gets.
  • The larger a structure is, the more damage it gets, since the blast is in contact longer.

Building stats

• Regular turrets have damage 20 and the same firing rate as combat tank. Range unknown.
• Rocket turrets have damage 30 and the same firing rate as missile tank. Range unknown.
  • If the enemy unit is 3 tiles away or less, the rocket turret fires a bullet like the regular turret, with the same stats.

• What is the normal range of the turret and missile turret?

House stats

• Mental weakness determines both units' likelihood to defect to Ordos when hit by Deviator and units' likelihood to retreat when going from Troopers to Trooper or Infantry to Soldier.
• Tank degrade chance is the risk that a tracked unit (except Harvesters) will be given degrading status when created.
• Building degrade amount determines how much wear buildings take per time unit. See degrade info below.

Mission Credits

Degrade behavior

Weather wear

Power outage wear

Unit wear

Health behavior

Power output

Spice unload speed

uint16 harvesterStep = (s->o.hitpoints * 256 / si->o.hitpoints) * 3 / 256;
if (u->amount != 0 && harvesterStep < 1) harvesterStep = 1;

Build speed

Unit repair speed and cost

Unit move and attack speed

Other functions

• Is anything else, such as Turret attack speed, Starport order time, etc. affected by building health?

Starport

• Can order units at a cheaper price than normally
• Can order several units at once without worrying about building time
• Can order units even when you are at max allowed units from factories ("Unable to create more")
• Can order units your House may not be able to build
• Can order units before to the prerequisite structures and upgrades are set up

Prices

credits = (credits / 10) * 4 + (credits / 10) * (Tools_RandomLCG_Range(0, 6) + Tools_RandomLCG_Range(0, 6) );
return min(credits, 999);

• How often are prices recalculated?

Quantities

Reduced attack damage

• How big is a distance unit in this case? 2 pixels?

Exploitable game bugs

Combat

• In most versions of the game (TODO: determine which version patch fixes this), when a Carry-All lands a combat unit close to enemies, it is ignored by the AI until it uses a projectile to fire on enemy units.
  • Sonic tanks since they do not use projectile attacks are then indefinitely ignored by the AI and can be used to single handedly demolish an entire enemy base without the AI retaliating.
    • However if you use the actual Attack command on a unit, the AI will know. Instead attack by shooting in a unit's direction instead of explicitly letting the game know you want to attack it.
  • Buildings can be attacked without the AI noticing.
  • Vehicles carrying explosives can thus be invisibly driven right up to key infrastructure.
  • You can force a Carry-All to land a combat unit close to enemies by building a repair factory, surrounding it, then firing on your own unit somewhere till it starts smoking. The Carry-All will take it to be repaired, then fly it back to where it was when done, since the unit cannot exit the repair factory on its own.
• In some versions of the game, when clicking on an enemy turret, it will turn its gun immediately to the left. Using this bug, one can drive by on the right of enemy turrets and click on them to make then face the other way and unable to fire on your units.
• In versions 1.00 to 1.06 of the game, enemy turrets do not fire on Fremen troops when playing as Atreides. Your own turrets always fire on Fremen when not playing as Atreides.
• When there are many units on the map, units outside the current screen (except Carry-Alls, Ornithopters, Saboteurs, Harvesters and Sand worms) move slower than those off the screen. Look at your own key units to make them move faster, and do not view enemy units so they move more slowly.
• Sonic tanks shoot farther on faster game speeds.
• The range of turrets depends on direction of fire and angle the target is at. Extra distance is allowed upwards/leftwards but not downwards/rightwards. This is because attack distance calculations are performed on the top left corner of turrets, instead of their center. Units do not appear to be affected by this bug. Source: src/script/structure.c, line 321
  • As part of exploiting this, between multiple map choices when selecting the next level, select the one where the base locations offer a greater advantage to yourself.
• Enemy units with bullet-type weapons (all except Ornithopter, Sonic Tank, Missile Tanks and Trooper/s at long range) will happily fire upon their own building if they are in line of fire when attacking your own units. Sonic Tanks do this as well, but then your units also take damage.
• Deviated units continue to carry out their last given order even after the effects of deviation wear off.
  • It is possible to order the deviated unit to attack its own structures, and it will do so until the building falls. Other enemy units and turrets will not attack it while it does this.
  • It is possible to order the deviated unit to attack ground in a remote corner of the map, taking it out of combat permanently.
  • It is possible to order Harkonnen Devastators to self destruct.

Harvesting

• Credits (money/spice) is stored in a signed 16 bit integer and can be overflowed. At this point, you can start building for free till you overflow again.
• The spice cap (refineries + silos) is only calculated for the House which built the latest structure. It is therefore possible to go over spice cap.
  • The spice cap also includes structures that are built but not yet placed.
• This one is more like an oversight. An exploded harvester disperses more spice than it actually contains.
  • If you only have one harvester and it explodes (or is deviated), you get a new one for free.
    • If you have little spice near your base, you can let the harvester fill mostly up, blow it up, then get a new free harvester which can harvest a lot more spice close to your base.
• The first harvester is delivered by Carry-All when the first refinery is built. Normally this Carry-All then leaves, but in version 1.00 to 1.06 if you place your refinery close enough to a spice patch, and order the harvester to return as soon as it has harvested a little bit of spice, the Carry-All will airlift it back and then stay, gaining you a free Carry-All.
• Enemy Harvesters which run over a unit on foot stop harvesting permanently.

Other

• Due to rounding errors in version 1.07 and above, repair cost is incorrectly calculated. Palaces can be repaired for free.
• Not so much a bug, but Carry-Alls become more active if you have more RAM.