1 files changed, 86 insertions, 4 deletions
diff --git a/src/simulation/senses.test.js b/src/simulation/senses.test.js
index 1caed52..b54ada2 100644
--- a/src/simulation/senses.test.js
+++ b/src/simulation/senses.test.js
@@ -2,7 +2,7 @@
 
 import { senses } from './senses.js';
 
-const [ frozen, ...rest ] = senses;
+const [ frozen, hear, ...rest ] = senses;
 
 
 test("frozen sense", () => {
@@ -10,9 +10,91 @@ test("frozen sense", () => {
     id: 0, x: 0, y: 0,
     flags: { frozen: true, },
   };
-  const lattice = null;
 
-  expect(frozen.read(lattice, agent)).toEqual([1]);
+  expect(frozen.read(null, agent)).toEqual([1]);
   agent.flags.frozen = false;
-  expect(frozen.read(lattice, agent)).toEqual([0]);
+  expect(frozen.read(null, agent)).toEqual([0]);
+});
+
+
+test("hear nothing", () => {
+  const agent = { id: 4, x: 1, y: 1, flags: {} };
+  const o = { type: 'empty', flags: {} };
+  const world = {
+    lattice: [
+      [ o, o, o ],
+      [ o, o, o ],
+      [ o, o, o ],
+    ],
+    agents: [agent],
+  };
+
+  expect(hear.read(world, agent)).toEqual([
+    Math.tanh(0), Math.tanh(0), Math.tanh(0), Math.tanh(0),
+    Math.tanh(0), Math.tanh(0), Math.tanh(0), Math.tanh(0),
+  ]);
+});
+
+
+test("hear self", () => {
+  const agent = { id: 4, x: 1, y: 1, flags: { emit: [1, 0, 0.5, 0, 0, 0, 0, 1] } };
+  const o = { type: 'empty', flags: {} };
+  const world = {
+    lattice: [
+      [ o, o, o ],
+      [ o, o, o ],
+      [ o, o, o ],
+    ],
+    agents: [agent],
+  };
+
+  expect(hear.read(world, agent)).toEqual([
+    Math.tanh(1), Math.tanh(0), Math.tanh(0.5), Math.tanh(0),
+    Math.tanh(0), Math.tanh(0), Math.tanh(0), Math.tanh(1),
+  ]);
+});
+
+
+test("hear cells", () => {
+  const agent = { id: 4, x: 2, y: 2, flags: {} };
+  const o = { type: 'empty', flags: {} };
+  const s = { type: 'empty', flags: { emit: [1, 0.5, 0.25, 0.125, 0, 0, 0, 0] } };
+  const world = {
+    lattice: [
+      [ o, o, s, o, o ],
+      [ o, o, o, o, o ],
+      [ o, s, o, o, o ],
+      [ o, o, o, o, o ],
+      [ o, o, o, o, o ],
+    ],
+    agents: [agent],
+  };
+
+  expect(hear.read(world, agent)).toEqual([
+    Math.tanh(1.25), Math.tanh(0.625), Math.tanh(0.3125), Math.tanh(0.15625), 
+    Math.tanh(0), Math.tanh(0), Math.tanh(0), Math.tanh(0),
+  ]);
+});
+
+
+test("hear cells & agents", () => {
+  const agent = { id: 4, x: 2, y: 2, flags: {} };
+  const agent2 = { id: 0, x: 2, y: 4, flags: { emit: [0, 0, 0, 0, 1, 1, 1, 1] } };
+  const o = { type: 'empty', flags: {} };
+  const s = { type: 'empty', flags: { emit: [1, 0.5, 0.25, 0.125, 0, 0, 0, 0] } };
+  const world = {
+    lattice: [
+      [ o, o, s, o, o ],
+      [ o, o, o, o, o ],
+      [ o, s, o, o, o ],
+      [ o, o, o, o, o ],
+      [ o, o, o, o, o ],
+    ],
+    agents: [agent, agent2],
+  };
+
+  expect(hear.read(world, agent)).toEqual([
+    Math.tanh(1.25), Math.tanh(0.625), Math.tanh(0.3125), Math.tanh(0.15625), 
+    Math.tanh(0.25), Math.tanh(0.25), Math.tanh(0.25), Math.tanh(0.25),
+  ]);
 });