ROT
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| Flag: | ROT |
| File(s): | rules(md).ini |
| Values: | Unsigned integers: All non-negative whole numbers from 0 to either 32767, 2147483647 or 4294967295. |
| Default: | 0 |
| Applicable to: | Projectiles, TechnoTypes:
AircraftTypes, BuildingTypes, InfantryTypes and VehicleTypes |
On TechnoTypes
Determines the Rate Of Turn of this object and/or its turret, if applicable. Bigger number = faster turn.
Infantry always turn instantly, vehicles and buildings turn instantly when ROT=0, and aircraft will fly in a straight line when ROT=0.
For Red Alert ROT=0 This will make VehicleTypes unable to move. Can only attack and turn the turret slowly.
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On Projectiles
A non-zero value means this projectile can home-in on its target. A value of 0 disables homing behavior and leaves the projectile to fly like Arcing.
Special Cases
ROT=0
ROT=0 is not actually an intentional way of working for any type; it just tells the game that this projectile does not belong to the ROT type. If this projectile is not of the Arcing, Inviso or Vertical type at the same time, it will use a default behavior. This behavior is equivalent to a faulty Arcing[1], but when the distance to the target exceeds 8 cells, it will always hit at 2/3 of the path. In GearZero, this was programmatically changed to a straight-line trajectory. However, apart from this, the performance of this default behavior is always awkward, and its trajectory is clearly not straight but curved. If you want to achieve a straight trajectory, you should use the Straight trajectory provided by Phobos. Refer to Phobos documentation.
ROT=1
A projectile with a ROT=1 will follow what appears to be a straight line to its target (seen on the Cyborg Commando in Tiberian Sun). Actually, at extended ranges and low speeds, even projectiles with ROT=1 will adjust their trajectory to accomodate for changes in the target's position, but this is not usually visible. However, projectiles with ROT=1 will have no height deviation from their firing point, unlike missiles with higher ROT, which will fly upwards to hit the target in an arc.
- Setting ROT=1 appears to make the projectile default to a high acceleration, meaning that it will be fired at a low speed and accelerate as it moves towards its target, though modifying the Acceleration tag can prevent this in order to generate a smoother flight.
- Because the turning speed is too slow, projectiles with ROT=1 are known to act strangely when fired at certain angles or distances. They will sometimes "overshoot" their target and fly on past the map boundaries, but re-enter the map later, hitting their target. Other unusual behaviour has been observed regarding flight characteristics, especially when an ROT=1 is coupled with AA=yes, this also applies in any case where the ROT/Speed ratio is small. The most obscure effects are obtained by firing an projectile with an ROT of 1 from aircraft, which will give an extreme form of the "Circling Missile bug".
Notes
When used together with Arcing=yes, it causes the unit to be unable to fire properly. Instead, it continuously plays the FireUp sequence by cycling through each round one after another, and ignoring the rearm interval defined by ROF.
Regardless of whether it has AA=yes or not, as long as the target tracked by the projectile is destroyed in mid-air, the projectile will fly to the altitude specified by [General]→MissileSafetyAltitude= and then detonate.
This type of projectile is sensitive to speed; too low a speed may cause it to ascend vertically after firing and then detonate, and a lower speed may result in various strange trajectories.
When using this type of projectile, some flags can function; see the #See Also section.
Bugs/Side-Effects/Unexpected Limitations
When an aircraft uses a projectile with ROT < 2 and Inviso=no, it will enter Strafing mode. In this situation, it cannot attack aerial targets.
- Although you can make it fire by first strafing the ground and then changing the target to an aerial object...
- This bug has been fixed in Phobos Build#43.
Footnotes
- ↑ Since AircraftTypes attach their own three-dimensional velocity to the projectile when firing, when launched by aircrafts, ROT=0 and Arcing=yes are completely identical in terms of trajectory.