利用者:Sculptorjim/Game Engine/Logic/Sensors/Overview

Sensors

Sensors are what cause the game logic to do anything. Sensors can be triggered by events such as a nearby object, a key pressed on the keyboard, timed events, etc. When a sensor is triggered, a positive pulse is sent to all controllers that are linked to it.

Sensors fire pulses to controllers. The pulses can be TRUE or FALSE. Different parameters on the sensor's logic brick control when a sensor fires what pulse. This is extremly important as it has direct influence on the game logic and the performance. It is up to the controllers how to react on TRUE and FALSE pulses.

Sensors will fire pulses to connected controllers. These can be either:

Individual pulses when the sensor detects an event, or

Sequences of repeated pulses, fired at a rate of 60Hz (or some lower frequency determined by a user setting).

The pulses sent by sensors can send TRUE or FALSE pulses.

Sensor Types

The following types of actuator are currently available:

Actuator	Senses when the specified actuator is activated.
Always	Gives a constant stream of output pulses.
Collision	Senses when object collides with another object with specified name and property.
Delay	Gives an output pulse after a specified delay.
Joystick	Detects joystick events.
Keyboard	Detects keyboard events.
Message	Detects messages sent from elsewhere in the game logic.
Mouse	Detects mouse events.
Near	Gives an output pulse whenever another object comes within a specified distance.
Property	Detects changes in a specified property.
Radar	Gives an output pulse whenever another object comes within a cone region of specified distance and angular spread.
Random	Generates pulses with random intervals.
Ray	Gives an output pulse whenever a ray along a specified axis intercepts another object.
Touch	Detects when the object touches (or separates from) another object.