build: Migrate to flat project structure

This change updates the project structure to become flattened.
Previously, the simulator, frontend and API each lived into their own
directory.

With this change, all modules of the project live in the top-level
directory of the repository. This should improve discoverability of
modules of the project.

1 files changed, 82 insertions, 0 deletions

diff --git a/opendc-web/opendc-web-ui/src/actions/map.js b/opendc-web/opendc-web-ui/src/actions/map.js
new file mode 100644
index 00000000..0d49d849
--- /dev/null
+++ b/opendc-web/opendc-web-ui/src/actions/map.js
@@ -0,0 +1,82 @@
+import {
+    MAP_MAX_SCALE,
+    MAP_MIN_SCALE,
+    MAP_SCALE_PER_EVENT,
+    MAP_SIZE_IN_PIXELS,
+} from '../components/app/map/MapConstants'
+
+export const SET_MAP_POSITION = 'SET_MAP_POSITION'
+export const SET_MAP_DIMENSIONS = 'SET_MAP_DIMENSIONS'
+export const SET_MAP_SCALE = 'SET_MAP_SCALE'
+
+export function setMapPosition(x, y) {
+    return {
+        type: SET_MAP_POSITION,
+        x,
+        y,
+    }
+}
+
+export function setMapDimensions(width, height) {
+    return {
+        type: SET_MAP_DIMENSIONS,
+        width,
+        height,
+    }
+}
+
+export function setMapScale(scale) {
+    return {
+        type: SET_MAP_SCALE,
+        scale,
+    }
+}
+
+export function zoomInOnCenter(zoomIn) {
+    return (dispatch, getState) => {
+        const state = getState()
+
+        dispatch(zoomInOnPosition(zoomIn, state.map.dimensions.width / 2, state.map.dimensions.height / 2))
+    }
+}
+
+export function zoomInOnPosition(zoomIn, x, y) {
+    return (dispatch, getState) => {
+        const state = getState()
+
+        const centerPoint = {
+            x: x / state.map.scale - state.map.position.x / state.map.scale,
+            y: y / state.map.scale - state.map.position.y / state.map.scale,
+        }
+        const newScale = zoomIn ? state.map.scale * MAP_SCALE_PER_EVENT : state.map.scale / MAP_SCALE_PER_EVENT
+        const boundedScale = Math.min(Math.max(MAP_MIN_SCALE, newScale), MAP_MAX_SCALE)
+
+        const newX = -(centerPoint.x - x / boundedScale) * boundedScale
+        const newY = -(centerPoint.y - y / boundedScale) * boundedScale
+
+        dispatch(setMapPositionWithBoundsCheck(newX, newY))
+        dispatch(setMapScale(boundedScale))
+    }
+}
+
+export function setMapPositionWithBoundsCheck(x, y) {
+    return (dispatch, getState) => {
+        const state = getState()
+
+        const scaledMapSize = MAP_SIZE_IN_PIXELS * state.map.scale
+        const updatedX =
+            x > 0
+                ? 0
+                : x < -scaledMapSize + state.map.dimensions.width
+                ? -scaledMapSize + state.map.dimensions.width
+                : x
+        const updatedY =
+            y > 0
+                ? 0
+                : y < -scaledMapSize + state.map.dimensions.height
+                ? -scaledMapSize + state.map.dimensions.height
+                : y
+
+        dispatch(setMapPosition(updatedX, updatedY))
+    }
+}