Campfire
This is just me trying to simulate fire in Pico8 without shaders or fancy particle systems.
My approach is :
- At load time :
- Generate bursts of animated particles
- Each particle increments the brightness value for the pixels it sits on
- The burst animations are baked into the spritesheet
- At run time :
- Animate the baked sprites (moving them up)
- Again, add the brightness values together
The brightness value (which is just a color from 0 to 7) is mapped to a fire shade with pal().
There are other particle systems for bursts of sparkles and fireflies.
Any thought? What would be your approach?
v2 update
- use colors 0 to 7 for fire shades : no table needed to store brightness values
- bake animations into spritesheet for performance
- got rid of smoke
- add flickering
- nicer fireflies and flying ember
- add clouds
v3 update
- press a button to toggle scene on/off (monitor CPU usage of fire only)
very cool. what if the objects around the fire flickered? or the smoke was lit up by the fire. i can't wait to see more of this.
Thanks !
Yes I tried the flickering on the rocks edges but I couldn't get it right. I was picking a random shade (lit or unlit) each frame and that looked nasty !
The lit smoke is a cool idea, I'll try that!
@pck404 you're welcome :). As for the flickering on the rocks, it should base on proximity to the nearest particle, or if that's not happening quite yet, it should be periodically as opposed to randomly.
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