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authorKai Stevenson <kai@kaistevenson.com>2026-08-16 17:29:42 -0700
committerKai Stevenson <kai@kaistevenson.com>2026-08-16 17:29:42 -0700
commitf177cc716c5f2aa5b50b14ccbb421de89e3a7854 (patch)
treedb06f9f44251d6d90e5e9709d47e6cc4397b9443 /src/sim/materials/fire.rs
parent40e9d818195824749293dff3afcfdd5c1432adbe (diff)
wip
Diffstat (limited to 'src/sim/materials/fire.rs')
-rw-r--r--src/sim/materials/fire.rs76
1 files changed, 0 insertions, 76 deletions
diff --git a/src/sim/materials/fire.rs b/src/sim/materials/fire.rs
deleted file mode 100644
index 97027d5..0000000
--- a/src/sim/materials/fire.rs
+++ /dev/null
@@ -1,76 +0,0 @@
-use rand::RngExt;
-
-use crate::sim::{cell::Cell, materials::MaterialId, sim::UpdateCtx};
-
-trait FireCellView {
- fn get_ticks_lived(self) -> u16;
- fn set_ticks_lived(&mut self, ticks: u16) -> ();
- fn is_flammable(self) -> bool;
-}
-
-impl FireCellView for Cell {
- fn get_ticks_lived(self) -> u16 {
- self.data
- }
- fn set_ticks_lived(&mut self, ticks: u16) {
- self.data = ticks;
- }
- // this could be a property of the material def, I think it's better here for now
- fn is_flammable(self) -> bool {
- [MaterialId::Wood].contains(&self.material)
- }
-}
-
-// TODO optimize number of rng calls?
-#[inline]
-pub fn sim_update(ctx: &mut UpdateCtx) {
- let ticks_lived = ctx.cell.get_ticks_lived();
- // 2 seconds
- if ticks_lived > 240 {
- // we have a chance to live longer--roughly 50% chance of living an extra second
- if ctx.rng.random_range(0.0..1.0) > 0.995 {
- // kill ourselves, with a chance to turn into ash
- if ctx.rng.random_range(0.0..1.0) > 0.8 {
- // TODO ash material
- ctx.set_cell(0, 0, Cell::from_material(MaterialId::Sand));
- } else {
- ctx.set_cell(0, 0, Cell::void());
- }
- return;
- }
- }
-
- // at an average of 4 times per lifespan, try to spread
- // 1/60 * 240 = 4
- if ctx.rng.random_range(0.0..1.0) > (59.0 / 60.0) {
- let (dx, dy) = (ctx.rng.random_range(-1..=1), ctx.rng.random_range(-1..=1));
- if let Some(target) = ctx.get_cell(dx, dy)
- && target.is_flammable()
- {
- ctx.set_cell(dx, dy, Cell::from_material(MaterialId::Fire));
- }
- }
-
- // 8 times in our lifespan, emit smoke
- if ticks_lived.is_multiple_of(30)
- && let Some(target) = ctx.get_cell(0, -1)
- && target.material == MaterialId::Void
- {
- for (dx, dy) in [
- (0, -1),
- (1 - ctx.seqno_parity as i32 * 2, 0),
- (-1 + ctx.seqno_parity as i32 * 2, 0),
- (0, 1),
- ] {
- if let Some(target) = ctx.get_cell(dx, dy)
- && target.material == MaterialId::Void
- {
- ctx.set_cell(dx, dy, Cell::from_material(MaterialId::Smoke));
- break;
- }
- }
- }
-
- ctx.cell.set_ticks_lived(ticks_lived + 1);
- ctx.set_cell(0, 0, *ctx.cell);
-}