From 0f0e61a5149f96a263acf15ad2501aac4ef48016 Mon Sep 17 00:00:00 2001
From: cha0s <git@cha0s.io>
Date: Mon, 4 Apr 2022 12:34:24 -0500
Subject: [PATCH] feat: tile painting

---
 .../persea/room-sides/tiles-side/index.jsx    | 74 +++++++++++++++++--
 .../room-sides/tiles-side/index.module.scss   |  3 +
 packages/topdown/src/resources/tiles.js       |  3 +-
 3 files changed, 71 insertions(+), 9 deletions(-)

diff --git a/packages/topdown/src/persea/room-sides/tiles-side/index.jsx b/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
index d2819f0..6a1f822 100644
--- a/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
+++ b/packages/topdown/src/persea/room-sides/tiles-side/index.jsx
@@ -10,6 +10,7 @@ import {
   Rectangle,
   Vector,
 } from '@avocado/math';
+import {useJsonPatcher} from '@avocado/resource/persea';
 import {
   classnames,
   hot,
@@ -47,11 +48,13 @@ function TilesPage({
   room,
   roomRenderable,
 }) {
+  const patch = useJsonPatcher();
   const layerCount = resource.tiles.length;
   const [currentLayer, setCurrentLayer] = useState(0);
   const [tilesetEvents, setTilesetEvents] = useState();
   const [solo, setSolo] = useState(Array(layerCount).fill(false));
   const [incident, setIncident] = useState([0, 0]);
+  const [isHoldingPaint, setIsHoldingPaint] = useState(false);
   const [isHolding, setIsHolding] = useState(false);
   const [mute, setMute] = useState(Array(layerCount).fill(false));
   const [selection, setSelection] = useState([0, 0, 16, 16]);
@@ -90,15 +93,70 @@ function TilesPage({
     if (!events) {
       return undefined;
     }
+    const tileSize = [16, 16];
+    const stamp = (translated) => {
+      const position = Vector.div([selection[0], selection[1]], tileSize);
+      const size = Vector.div([selection[2], selection[3]], tileSize);
+      let [x, y] = position;
+      const stamp = [];
+      for (let yy = 0; yy < size[1]; ++yy) {
+        for (let xx = 0; xx < size[0]; ++xx) {
+          stamp.push((y * (viewport[0] / tileSize[0])) + x);
+          x += 1;
+        }
+        x -= size[0];
+        y += 1;
+      }
+      const where = Rectangle.compose(translated, size);
+      room.tiles[currentLayer].stampAt(where, stamp);
+      room.tiles[currentLayer].emit('update', where);
+      const {data} = room.tiles[currentLayer].toJSON();
+      if (!data) {
+        patch({
+          op: 'remove',
+          path: `/tiles/${currentLayer}/data`,
+        });
+      }
+      else {
+        patch({
+          path: `/tiles/${currentLayer}/data`,
+          value: data,
+        });
+      }
+    };
     const onValue = (
-      // {
-      //   clientX,
-      //   clientY,
-      //   deltaY,
-      //   target,
-      //   type,
-      // },
+      {
+        clientX,
+        clientY,
+        target,
+        type,
+      },
     ) => {
+      switch (type) {
+        case 'touchstart':
+        case 'mousedown': {
+          const {left, top} = target.getBoundingClientRect();
+          const translated = Vector.floor(Vector.div([clientX - left, clientY - top], tileSize));
+          stamp(translated);
+          setIsHoldingPaint(true);
+          break;
+        }
+        case 'touchmove':
+        case 'mousemove': {
+          if (isHoldingPaint) {
+            const {left, top} = target.getBoundingClientRect();
+            const translated = Vector.floor(Vector.div([clientX - left, clientY - top], tileSize));
+            stamp(translated);
+          }
+          break;
+        }
+        case 'touchend':
+        case 'mouseup': {
+          setIsHoldingPaint(false);
+          break;
+        }
+        default:
+      }
     };
     events.onValue(onValue);
     return () => {
@@ -169,7 +227,7 @@ function TilesPage({
               // eslint-disable-next-line react/no-array-index-key
               <li key={i}>
                 <button
-                  className={styles.layerButton}
+                  className={classnames(styles.layerButton, {[styles.active]: currentLayer === i})}
                   onClick={(event) => {
                     // Bug? .stopPropagation() doesn't work when clicking the child checkboxes.
                     if (event.target === event.currentTarget) {
diff --git a/packages/topdown/src/persea/room-sides/tiles-side/index.module.scss b/packages/topdown/src/persea/room-sides/tiles-side/index.module.scss
index 8e66e10..72f4410 100644
--- a/packages/topdown/src/persea/room-sides/tiles-side/index.module.scss
+++ b/packages/topdown/src/persea/room-sides/tiles-side/index.module.scss
@@ -22,6 +22,9 @@
   justify-content: space-between;
   margin: 0.5rem 0 0 0;
   width: 100%;
+  &.active {
+    background-color: rgb(0, 108, 134);
+  }
   .info {
     padding-right: 0.5rem;
   }
diff --git a/packages/topdown/src/resources/tiles.js b/packages/topdown/src/resources/tiles.js
index 321cd2d..551390f 100644
--- a/packages/topdown/src/resources/tiles.js
+++ b/packages/topdown/src/resources/tiles.js
@@ -289,9 +289,10 @@ export default (flecks) => {
     }
 
     toJSON() {
+      const isZero = !this.$$data.some((t) => !!t);
       return {
         area: this.area,
-        data: deflate(Buffer.from(this.$$data.buffer)).toString('base64'),
+        ...(isZero ? {} : {data: deflate(Buffer.from(this.$$data.buffer)).toString('base64')}),
         tileSize: this.$$tileSize,
         ...(this.$$tileImageUri ? {tileImageUri: this.$$tileImageUri} : []),
       };