fast_ecs

Description:

fast ecs

Fast ECS #
Simple and fast Entity-Component-System (ECS) library written in Dart.
CPU Flame Chart #
Demonstration of performance for rotation of 1024 entities

device Nexus 5 (2014) android 6.0.1
fast_ecs version 0.0.1
all Time 10500(ms)
1024 entities


RotationSystem
void update(double deltaTime, SetEntity entities) {
for (var i = 0; i < entities.size; i++) {
Entity entity = entities[i];
TransformComponent transform = transformComponents[entity];
VelocityComponent rotation = velocityComponents[entity];
transform.rotation += rotation.velocity * deltaTime;
transform.dirty = true;
}
}
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SpriteSystem
void updateSprite(TransformComponent transform, SpriteComponent sprite) {
var textureRegion = sprite.textureRegion;
if (transform.dirty && textureRegion != null) {
var scos = cos(transform.rotation) * transform.scale;
var ssin = sin(transform.rotation) * transform.scale;
var tx = -scos * textureRegion.anchorX + ssin * textureRegion.anchorY;
var ty = -ssin * textureRegion.anchorX - scos * textureRegion.anchorY;
sprite.transformData.set(scos, ssin, tx, ty);
transform.dirty = false;
}
}
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History of creation #
The source of inspiration was the
resource A SIMPLE ENTITY COMPONENT SYSTEM (ECS) [C++]