new fire

src/elements/fire2.js

@@ -0,0 +1,65 @@
+import * as water from './water'
+import * as slime from './slime'
+import * as sand from './sand'
+import * as smoke from './smoke'
+import * as oil from './oil'
+import * as lava from './lava'
+import * as gunpowder from './gunpowder'
+import { EMPTY, empty } from './empty'
+import * as element from '../element'
+import { chance, pickRand } from '../random'
+
+const BASE_COLOR = [35, 76, 62, 72]
+
+const NAME = 'FIRE2'
+const despawnChance = 0.2
+const chanceOfGoingStraight = 0.95
+const ignitingChance = 0.35
+
+const make = () =>
+  element.make({
+    type: NAME,
+    color: pickRand([0xeb4833, 0xedb668, 0xe32e16]),
+    direction: pickRand([1, -1]),
+  })
+
+const update = (sandpit, cell) => {
+  const above = sandpit.get(0, -1)
+
+  let fuel
+  let igniteTarget
+
+  for (let [nx, ny] of sandpit.neighbors1) {
+    const neighbor = sandpit.get(nx, ny)
+    if (neighbor.flammable) {
+      fuel = [nx, ny]
+    }
+    if (neighbor.type == EMPTY) {
+      igniteTarget = [nx, ny]
+    }
+  }
+
+  if (chance(0.5) && fuel && igniteTarget) {
+    sandpit.set(...igniteTarget, make())
+
+    if (chance(0.05)) {
+      sandpit.set(...fuel, make())
+    }
+  }
+
+  if (!fuel && chance(despawnChance)) {
+    sandpit.set(0, 0, empty())
+  }
+
+  switch (above.type) {
+    case EMPTY:
+      if (chance(chanceOfGoingStraight)) {
+        sandpit.move(0, -1)
+      } else if (sandpit.is(cell.direction, 1, EMPTY)) {
+        sandpit.move(cell.direction, -1)
+      }
+      break
+  }
+}
+
+export { NAME, make, update, BASE_COLOR }

src/elements/index.js

@@ -5,6 +5,7 @@ import * as water from './water'
 import * as smoke from './smoke'
 import * as wood from './wood'
 import * as fire from './fire'
+import * as fire2 from './fire2'
 import * as oil from './oil'
 import * as plant from './plant'
 import * as slime from './slime'
@@ -18,6 +19,7 @@ export const activeElements = {
   [water.NAME]: water,
   [smoke.NAME]: smoke,
   [fire.NAME]: fire,
+  [fire2.NAME]: fire2,
   [oil.NAME]: oil,
   [plant.NAME]: plant,
   [slime.NAME]: slime,
@@ -35,6 +37,7 @@ export default {
   smoke,
   wood,
   fire,
+  fire2,
   oil,
   plant,
   slime,