Motion Orientation and Relation

Space is a three-dimensional environment that does not lend itself to the usual standards of orientation and motion that are applied on a body with gravity. Motion is defined by the direction and rate of travel. Orientation is direction a vessel is “facing,” but it is not the necessarily the same direction as the motion. (For example, to slow itself a ship will turn 180" to fire its engines, thus facing in the direction opposite its motion.) Since both of these quantities are three dimensional, the complexity is greater than required for comfortable game play, so simplification requires reducing the number of dimensions and generalizing actual values by using description. Thus, motion is described in two dimensions; one moves forward and backward along the x-axis, and side-slips left and right along the y-axis. Orientation is described as turning left and right (yaw). One can also turn “up” and “down,” with “down” always being the direction of the orbit plane of the nearest reference point. If the unit is facing a target that is not in the same plane, it is assumed to be oriented toward the target unless otherwise noted. The command “New Course” will change the vessel’s direction to a new heading.

MOTION AND ORIENTATION TERMINOLOGY

TERM DEFINITION
Delta V (velocity) Describes the current velocity of the ship
Increase (velocity) Directive to accelerate to specified velocity on current facing
Decrease (velocity) Directive to decelerate to specified velocity on current facing
Shift Right/Left Perform sideslip in the specified direction
Turn Right/Left (degrees) Directive for perform turn to the specified heading
Delta Plus Describes the position of a target: the target is accelerating
Delta Minus Describes the position of a target: the target is decelerating

Motion Orientation and Relation

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