Heatcloud: Difference between revisions
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Source | ==Introduction== | ||
heatcloud is one of the simplest and most common explosion types. Ironically, it is also one of the least intuitive. First of all, ignore the name--it basically makes an expanding image at the point at which it is spawned. | |||
==Source== | |||
https://spring.clan-sy.com/svn/spring/trunk/rts/Sim/Projectiles/Unsynced/HeatCloudProjectile.cpp | |||
==Parameters== | |||
=== heat, maxheat, heatFalloff === | |||
Most explosions have alpha and ttl. I don't know why heatcloud uses these instead. Basically: | |||
Starting alpha = heat / maxheat | |||
ttl = heat / heatFalloff | |||
The alpha decreases linearly across the heatcloud's lifetime. | |||
=== size, sizeGrowth === | |||
The heatcloud starts at size size and grows sizeGrowth each frame. | |||
=== sizemod, sizemodmod === | |||
It seems that the heatcloud expands by a factor of (1 - sizemod) each frame. The sizemod itself is multiplied by sizemodmod every frame. Most of the time it's probably best just not to contemplate these. | |||
Revision as of 05:14, 23 March 2008
Introduction
heatcloud is one of the simplest and most common explosion types. Ironically, it is also one of the least intuitive. First of all, ignore the name--it basically makes an expanding image at the point at which it is spawned.
Source
https://spring.clan-sy.com/svn/spring/trunk/rts/Sim/Projectiles/Unsynced/HeatCloudProjectile.cpp
Parameters
heat, maxheat, heatFalloff
Most explosions have alpha and ttl. I don't know why heatcloud uses these instead. Basically:
Starting alpha = heat / maxheat ttl = heat / heatFalloff
The alpha decreases linearly across the heatcloud's lifetime.
size, sizeGrowth
The heatcloud starts at size size and grows sizeGrowth each frame.
sizemod, sizemodmod
It seems that the heatcloud expands by a factor of (1 - sizemod) each frame. The sizemod itself is multiplied by sizemodmod every frame. Most of the time it's probably best just not to contemplate these.
