Game Development Reference
In-Depth Information
variable that's only accessible in this function called textureColor that is
of type Color. Then use a sin curve (looks kind of like a sound wave if it's
been too long since your last math class that has gentle slopes up and
gentle slopes down) to define the red value of the textureColor Color. This
sin curve means that the red value is slowly being turned up, and then
slowly turned down. Then, use the textureColor to define the color of the
LED (
renderer.material.color). yield
; just means “wait” and keeps
the looping function from being an infinite loop and crashing Unity.
Step 14:
Save and return to Unity. Fix any syntax problems.
Step 15:
Test. When the camera sees the player we should have a flashing LED.
Adding Sound
Step 16:
Find an alarm sound you like (I'm using alarms.wav from
FreeSound.org;
http://www.freesound.org/samplesViewSingle
.php?id=54048
). Download it and place within the Unity project file.
Step 17:
On any CCTV_Camera prefab in the scene, select the
LED (Hallway_CCTV_Led) and add an Audio Source component
(Component>Audio>Audio Source). Place the alarm sound in the Audio
Clip input field (either use target icon or drag and drop from Project
panel). Turn off the Audio Source component, but make sure Play On
Awake and Loop are both checked (
Figure 15.10
).
Figure 15.10
Settings for the
CCTV camera.
Why?
We don't want this sound to always be playing; we want to trigger it in
the script (which is why we're turning off the Audio Source component),
but once it does awake (and thus play) we want it to loop.
