feat(settings/user/color): intro and outro animation

app/components/Settings/BottomScreen/Menus/User/Color.vue

@@ -1,4 +1,6 @@
 <script setup lang="ts">
+import gsap from "gsap";
+
 const { onRender, onClick } = useScreen();
 
 const app = useAppStore();
@@ -14,6 +16,114 @@ const CELL_SIZE = 16;
 const SPACING = 16;
 const ANIMATION_SPEED = 475;
 
+const PALETTE_SLIDE_OFFSET = 96;
+const PALETTE_SLIDE_DURATION = 0.25;
+const CELL_ANIMATION_DURATION = 0.04;
+const CELL_ANIMATION_STAGGER = 0.02;
+
+const SNAIL_ORDER = [0, 1, 2, 3, 7, 11, 15, 14, 13, 12, 8, 4, 5, 6, 10, 9];
+
+// animation state
+const animation = reactive({
+  cellVisibility: Array(16).fill(0) as number[],
+  paletteOffsetY: PALETTE_SLIDE_OFFSET,
+  paletteOpacity: 0,
+  textOpacity: 0,
+  isIntro: true,
+  isOutro: false,
+});
+const isAnimating = computed(() => animation.isIntro || animation.isOutro);
+
+const animateIntro = (): gsap.core.Timeline => {
+  animation.isIntro = true;
+
+  const timeline = gsap
+    .timeline({
+      onComplete: () => {
+        animation.isIntro = false;
+      },
+    })
+    .to(
+      animation,
+      { paletteOffsetY: 0, duration: PALETTE_SLIDE_DURATION, ease: "none" },
+      0,
+    )
+    .to(
+      animation,
+      { paletteOpacity: 1, duration: PALETTE_SLIDE_DURATION, ease: "none" },
+      0,
+    );
+
+  const colorsDuration =
+    SNAIL_ORDER.length * CELL_ANIMATION_STAGGER + CELL_ANIMATION_DURATION;
+  timeline.to(
+    animation,
+    { textOpacity: 1, duration: colorsDuration * 0.5, ease: "none" },
+    PALETTE_SLIDE_DURATION + colorsDuration * 0.5,
+  );
+
+  for (let i = 0; i < SNAIL_ORDER.length; i++) {
+    timeline.to(
+      animation.cellVisibility,
+      {
+        [SNAIL_ORDER[i]!]: 1,
+        duration: CELL_ANIMATION_DURATION,
+        ease: "none",
+      },
+      PALETTE_SLIDE_DURATION + i * CELL_ANIMATION_STAGGER,
+    );
+  }
+
+  return timeline;
+};
+
+const animateOutro = (): gsap.core.Timeline => {
+  animation.isOutro = true;
+
+  const timeline = gsap.timeline();
+
+  const colorsOutroDuration =
+    SNAIL_ORDER.length * CELL_ANIMATION_STAGGER + CELL_ANIMATION_DURATION;
+  timeline.to(
+    animation,
+    { textOpacity: 0, duration: colorsOutroDuration * 0.5, ease: "none" },
+    0,
+  );
+
+  for (let i = SNAIL_ORDER.length - 1; i >= 0; i--) {
+    timeline.to(
+      animation.cellVisibility,
+      {
+        [SNAIL_ORDER[i]!]: 0,
+        duration: CELL_ANIMATION_DURATION,
+        ease: "none",
+      },
+      (SNAIL_ORDER.length - 1 - i) * CELL_ANIMATION_STAGGER,
+    );
+  }
+
+  timeline.to(
+    animation,
+    {
+      paletteOffsetY: PALETTE_SLIDE_OFFSET,
+      duration: PALETTE_SLIDE_DURATION,
+      ease: "none",
+    },
+    colorsOutroDuration,
+  );
+  timeline.to(
+    animation,
+    { paletteOpacity: 0, duration: PALETTE_SLIDE_DURATION, ease: "none" },
+    colorsOutroDuration,
+  );
+
+  return timeline;
+};
+
+onMounted(() => {
+  animateIntro();
+});
+
 const originalSelectedCol = app.color.col;
 const originalSelectedRow = app.color.row;
 const originalColor = app.color.hex;
@@ -30,6 +140,8 @@ const select = (col: number, row: number) => {
 };
 
 useKeyDown((key) => {
+  if (isAnimating.value) return;
+
   switch (key) {
     case "NDS_UP":
       if (selectedRow > 0) select(selectedCol, selectedRow - 1);
@@ -47,6 +159,8 @@ useKeyDown((key) => {
 });
 
 onClick((x, y) => {
+  if (isAnimating.value) return;
+
   const relativeX = x - GRID_START_X;
   const relativeY = y - GRID_START_Y;
 
@@ -65,50 +179,86 @@ onClick((x, y) => {
 });
 
 onRender((ctx, deltaTime) => {
+  ctx.globalAlpha = animation.paletteOpacity;
+  ctx.translate(0, animation.paletteOffsetY);
+
   assets.images.settings.bottomScreen.user.colorPalette.draw(ctx, 16, 32);
 
-  // animate
-  const finalSelectorX = GRID_START_X + selectedCol * (CELL_SIZE + SPACING) - 4;
-  const finalSelectorY = GRID_START_Y + selectedRow * (CELL_SIZE + SPACING) - 4;
+  // colors
+  for (let row = 0; row < GRID_SIZE; row++) {
+    for (let col = 0; col < GRID_SIZE; col++) {
+      const cellIndex = row * GRID_SIZE + col;
+      const visibility = animation.cellVisibility[cellIndex]!;
 
-  const dx = finalSelectorX - selectorX;
-  const dy = finalSelectorY - selectorY;
+      if (visibility > 0) {
+        const x = GRID_START_X + col * (CELL_SIZE + SPACING);
+        const y = GRID_START_Y + row * (CELL_SIZE + SPACING);
+        const size = Math.floor(CELL_SIZE * visibility);
+        const offset = Math.floor((CELL_SIZE - size) / 2);
 
-  if (dx > 0) {
-    selectorX += ANIMATION_SPEED * (deltaTime / 1000);
-    if (selectorX > finalSelectorX) selectorX = finalSelectorX;
-  } else if (dx < 0) {
-    selectorX -= ANIMATION_SPEED * (deltaTime / 1000);
-    if (selectorX < finalSelectorX) selectorX = finalSelectorX;
-  } else if (dy > 0) {
-    selectorY += ANIMATION_SPEED * (deltaTime / 1000);
-    if (selectorY > finalSelectorY) selectorY = finalSelectorY;
-  } else if (dy < 0) {
-    selectorY -= ANIMATION_SPEED * (deltaTime / 1000);
-    if (selectorY < finalSelectorY) selectorY = finalSelectorY;
+        ctx.fillStyle = APP_COLORS[row]![col]!;
+        ctx.fillRect(x + offset, y + offset, size, size);
+      }
+    }
   }
 
   // selector
+  if (!animation.isOutro) {
+    const finalSelectorX =
+      GRID_START_X + selectedCol * (CELL_SIZE + SPACING) - 4;
+    const finalSelectorY =
+      GRID_START_Y + selectedRow * (CELL_SIZE + SPACING) - 4;
+
+    const dx = finalSelectorX - selectorX;
+    const dy = finalSelectorY - selectorY;
+
+    if (dx > 0) {
+      selectorX += ANIMATION_SPEED * (deltaTime / 1000);
+      if (selectorX > finalSelectorX) selectorX = finalSelectorX;
+    } else if (dx < 0) {
+      selectorX -= ANIMATION_SPEED * (deltaTime / 1000);
+      if (selectorX < finalSelectorX) selectorX = finalSelectorX;
+    } else if (dy > 0) {
+      selectorY += ANIMATION_SPEED * (deltaTime / 1000);
+      if (selectorY > finalSelectorY) selectorY = finalSelectorY;
+    } else if (dy < 0) {
+      selectorY -= ANIMATION_SPEED * (deltaTime / 1000);
+      if (selectorY < finalSelectorY) selectorY = finalSelectorY;
+    }
+  }
+
   ctx.fillStyle = APP_COLORS[selectedRow]![selectedCol]!;
 
+  const selectorDrawY = selectorY;
   const offsets = [0, 3, 7, 11, 15, 19, 22];
   for (const offset of offsets) {
-    ctx.fillRect(selectorX + offset, selectorY + 0, 2, 1);
-    ctx.fillRect(selectorX + offset, selectorY + 23, 2, 1);
-    ctx.fillRect(selectorX + 0, selectorY + offset, 1, 2);
-    ctx.fillRect(selectorX + 23, selectorY + offset, 1, 2);
+    ctx.fillRect(selectorX + offset, selectorDrawY + 0, 2, 1);
+    ctx.fillRect(selectorX + offset, selectorDrawY + 23, 2, 1);
+    ctx.fillRect(selectorX + 0, selectorDrawY + offset, 1, 2);
+    ctx.fillRect(selectorX + 23, selectorDrawY + offset, 1, 2);
   }
 
   // preview
   ctx.fillRect(192, 96, 32, 32);
+
+  ctx.globalAlpha = animation.textOpacity;
+  ctx.font = "7px NDS7";
+  ctx.fillStyle = "#000000";
+  ctx.textBaseline = "top";
+  fillTextHCentered(ctx, "Choose color", 177, 69, 62);
 });
 
-const handleCancel = () => {
-  select(originalSelectedCol, originalSelectedRow);
+const handleActivateB = async () => {
+  if (isAnimating.value) return;
+
+  app.setColor(originalSelectedCol, originalSelectedRow);
+  await animateOutro();
   store.closeSubMenu();
 };
 
-const handleConfirm = () => {
+const handleActivateA = () => {
+  if (isAnimating.value) return;
+
   app.save();
 
   if (app.color.hex !== originalColor) {
@@ -124,7 +274,10 @@ const handleConfirm = () => {
 
   confirmationModal.open({
     text: $t("settings.user.color.confirmation"),
-    onClosed: () => store.closeSubMenu(),
+    onClosed: async () => {
+      await animateOutro();
+      store.closeSubMenu();
+    },
     timeout: 2000,
   });
 };
@@ -135,7 +288,7 @@ const handleConfirm = () => {
     :y-offset="0"
     :b-label="$t('common.cancel')"
     :a-label="$t('common.confirm')"
-    @activate-b="handleCancel"
-    @activate-a="handleConfirm"
+    @activate-b="handleActivateB"
+    @activate-a="handleActivateA"
   />
 </template>