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Merge pull request #5942 from ZappoMan/flickeringLightScript

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Change the update rate of the flickering light to 30hz
This commit is contained in:
Brad Davis 2015-09-29 16:20:24 -07:00
commit 166d267022
1 changed files with 14 additions and 5 deletions
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19
examples/acScripts/flickeringLight.js
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@ -39,11 +39,13 @@ var ZERO_VEC = {
};
var totalTime = 0;
var lastUpdate = 0;
var UPDATE_INTERVAL = 1 / 30; // 30fps
var MINIMUM_LIGHT_INTENSITY = 0.75;
var MAXIMUM_LIGHT_INTENSITY = 2.75;
var LIGHT_INTENSITY_RANDOMNESS = 0.3;
var EPHEMERAL_LIFETIME = 10; // ephemeral entities will live for 10 seconds after script stops running
var EPHEMERAL_LIFETIME = 60; // ephemeral entities will live for 60 seconds after script stops running
var LightMaker = {
light: null,
@ -74,10 +76,17 @@ function update(deltaTime) {
LightMaker.spawnLight();
} else {
totalTime += deltaTime;
var intensity = (MINIMUM_LIGHT_INTENSITY + (MAXIMUM_LIGHT_INTENSITY + (Math.sin(totalTime) * MAXIMUM_LIGHT_INTENSITY)));
intensity += randFloat(-LIGHT_INTENSITY_RANDOMNESS, LIGHT_INTENSITY_RANDOMNESS);
var properties = Entities.getEntityProperties(LightMaker.light, "age");
Entities.editEntity(LightMaker.light, { intensity: intensity, lifetime: properties.age + EPHEMERAL_LIFETIME });
// We don't want to edit the entity EVERY update cycle, because that's just a lot
// of wasted bandwidth and extra effort on the server for very little visual gain
if (totalTime - lastUpdate > UPDATE_INTERVAL) {
var intensity = (MINIMUM_LIGHT_INTENSITY + (MAXIMUM_LIGHT_INTENSITY + (Math.sin(totalTime) * MAXIMUM_LIGHT_INTENSITY)));
intensity += randFloat(-LIGHT_INTENSITY_RANDOMNESS, LIGHT_INTENSITY_RANDOMNESS);
var properties = Entities.getEntityProperties(LightMaker.light, "age");
var newLifetime = properties.age + EPHEMERAL_LIFETIME;
Entities.editEntity(LightMaker.light, { type: "Light", intensity: intensity, lifetime: newLifetime });
lastUpdate = totalTime;
}
}
}