Ben Windley - Low-Level Particle System Colour Over Time

Low-Level Particle System Colour Over Time

Apr 26, 2018. | By: Ben Windley
1 min

Additions

I added an ASGE::Colour constructor overload to accept three variables instead of a float array [3], this allows for easier creation of colours without the need to change any existing code that relies on constructing colours through arrays.

I added colour over time as this is a useful feature in unity, however I would like to add multiple colour changes using vectors to make the flame look more believable, as many flames go from orange, to red, to dark-grey.

For debugging purposes I added a particle counter to see the effects of the particle count on FPS.

Colour Change

The code is a simple lerp as always however it is applied to multiple variables.

void ColourOverTime::update(float delta_time)
{
	lifetime -= delta_time;
	sprite->colour({ end_colour.r * (max_lifetime - lifetime) + start_colour.r * lifetime,
					 end_colour.g * (max_lifetime - lifetime) + start_colour.g * lifetime,
					 end_colour.b * (max_lifetime - lifetime) + start_colour.b * lifetime, });
}

Low-Level Particle System Colour Over Time

Low-Level Particle System Colour Over Time

Additions

Colour Change

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