feat: growth factor

app/ecs-components/plant.js

@@ -48,6 +48,7 @@ export default class Plant extends Component {
   static properties = {
     growScript: {type: 'string'},
     growth: {type: 'uint16'},
+    growthFactor: {defaultValue: 127, type: 'uint8'},
     mayGrowScript: {type: 'string'},
     stage: {type: 'uint8'},
     stages: {

app/ecs-systems/plant-growth.js

@@ -9,13 +9,15 @@ export default class PlantGrowth extends System {
   }
 
   tick(elapsed) {
+    const variance = Math.random() * 0.4 + 0.8
     for (const {Plant} of this.select('default')) {
       if (65535 === Plant.growth || !Plant.mayGrow()) {
         continue;
       }
       const stage = Math.floor(Plant.stage);
+      const growthFactor = (((Plant.growthFactor + 1) / 256) * 0.4 + 0.8) * variance
       Plant.growth = Math.min(
-        Plant.growth + (((Math.random() + 0.5) * elapsed) / Plant.stages[stage]) * 65535,
+        Plant.growth + ((growthFactor * elapsed) / Plant.stages[stage]) * 65535,
         65535,
       );
       if (65535 === Plant.growth) {

app/engine.js

@@ -122,7 +122,7 @@ export default class Engine {
       Plant: {
         growScript: '/assets/tomato-plant/grow.js',
         mayGrowScript: '/assets/tomato-plant/may-grow.js',
-        stages: [300, 300, 300, 300, 300],
+        stages: Array(5).fill(60),
       },
       Sprite: {
         anchor: {x: 0.5, y: 0.75},
@@ -136,10 +136,14 @@ export default class Engine {
       VisibleAabb: {},
     };
     const promises = [];
-    for (let y = 0; y < 10; ++y) {
-      for (let x = 0; x < 10; ++x) {
+    for (let y = 0; y < 5; ++y) {
+      for (let x = 0; x < 5; ++x) {
         promises.push(ecs.create({
           ...plant,
+          Plant: {
+            ...plant.Plant,
+            growthFactor: Math.floor(Math.random() * 256),
+          },
           Position: {x: 8 + x * 16, y: 8 + y * 16},
         }));
       }