1 files changed, 61 insertions, 0 deletions
diff --git a/frontend/src/reducers/simulation-mode.js b/frontend/src/reducers/simulation-mode.js
new file mode 100644
index 00000000..02041468
--- /dev/null
+++ b/frontend/src/reducers/simulation-mode.js
@@ -0,0 +1,61 @@
+import { OPEN_EXPERIMENT_SUCCEEDED } from "../actions/experiments";
+import { CHANGE_LOAD_METRIC } from "../actions/simulation/load-metric";
+import { SET_PLAYING } from "../actions/simulation/playback";
+import {
+  GO_TO_TICK,
+  SET_LAST_SIMULATED_TICK
+} from "../actions/simulation/tick";
+import { OPEN_SIMULATION_SUCCEEDED } from "../actions/simulations";
+
+export function currentExperimentId(state = -1, action) {
+  switch (action.type) {
+    case OPEN_EXPERIMENT_SUCCEEDED:
+      return action.experimentId;
+    case OPEN_SIMULATION_SUCCEEDED:
+      return -1;
+    default:
+      return state;
+  }
+}
+
+export function currentTick(state = 0, action) {
+  switch (action.type) {
+    case GO_TO_TICK:
+      return action.tick;
+    case OPEN_EXPERIMENT_SUCCEEDED:
+      return 0;
+    default:
+      return state;
+  }
+}
+
+export function loadMetric(state = "LOAD", action) {
+  switch (action.type) {
+    case CHANGE_LOAD_METRIC:
+      return action.metric;
+    default:
+      return state;
+  }
+}
+
+export function isPlaying(state = false, action) {
+  switch (action.type) {
+    case SET_PLAYING:
+      return action.playing;
+    case OPEN_EXPERIMENT_SUCCEEDED:
+      return false;
+    default:
+      return state;
+  }
+}
+
+export function lastSimulatedTick(state = -1, action) {
+  switch (action.type) {
+    case SET_LAST_SIMULATED_TICK:
+      return action.tick;
+    case OPEN_EXPERIMENT_SUCCEEDED:
+      return -1;
+    default:
+      return state;
+  }
+}