feat: out tracer

src/components/Armor/components/ShotDisplay.tsx

@@ -1,10 +1,15 @@
-import { Card, Flex, Kbd, Text } from '@radix-ui/themes';
+import { Card, Flex, Inset, Kbd, Separator, Text } from '@radix-ui/themes';
 import { Html } from '@react-three/drei';
 import { useFrame } from '@react-three/fiber';
 import { ComponentProps, useRef } from 'react';
 import { Euler, Mesh, Quaternion } from 'three';
+import { radToDeg } from 'three/src/math/MathUtils';
 import { J_HAT } from '../../../constants/axis';
-import { ShotStatus, useTankopediaTemporary } from '../../../stores/tankopedia';
+import {
+  ShotLayer,
+  ShotStatus,
+  useTankopediaTemporary,
+} from '../../../stores/tankopedia';
 import { ArmorType } from './SpacedArmorScene';
 import { ExternalModuleVariant } from './SpacedArmorSceneComponent';
 
@@ -22,8 +27,8 @@ const externalLayerNames: Record<ExternalModuleVariant, string> = {
 
 const shotStatusNames: Record<ShotStatus, string> = {
   blocked: 'Blocked',
+  ricochet: 'Ricochet',
   penetration: 'penetration',
-  ricochet: 'ricochet',
   splash: 'splash',
 };
 
@@ -41,18 +46,107 @@ const LENGTH_INFINITY = 4;
 const TRACER_THICK = 1 / 64;
 const TRACER_THIN = TRACER_THICK / 2;
 
+function LayerEntry({
+  layerIndex,
+  shotStatusColor,
+  layerName,
+  layer,
+  angle,
+}: {
+  layerIndex?: string;
+  shotStatusColor: ComponentProps<typeof Text>['color'];
+  layerName: string;
+  layer: ShotLayer;
+  angle?: number;
+}) {
+  return (
+    <Flex align="center" gap="2">
+      <Text
+        size="1"
+        color="gray"
+        style={{
+          width: 12,
+        }}
+      >
+        {layerIndex}
+      </Text>
+      <Text size="2" color={shotStatusColor} style={{ width: 47 }}>
+        {layerName}
+      </Text>
+
+      {layer.type === null && (
+        <>
+          <Text
+            size="2"
+            color={shotStatusColor}
+            style={{
+              width: 64,
+            }}
+          >
+            {Math.round(layer.distance * 1000).toLocaleString()}
+            <Text size="1">mm</Text>
+          </Text>
+
+          <Text size="2" color="gray">
+            {Math.max(-100, Math.round(-50 * layer.distance))}% penetration
+          </Text>
+        </>
+      )}
+
+      {layer.type === ArmorType.External && (
+        <Text
+          size="2"
+          color={shotStatusColor}
+          style={{
+            width: 64,
+          }}
+        >
+          {Math.round(layer.thickness).toLocaleString()}
+          <Text size="1">mm</Text>
+        </Text>
+      )}
+
+      {(layer.type === ArmorType.Core || layer.type === ArmorType.Spaced) && (
+        <>
+          <Text
+            size="2"
+            color={shotStatusColor}
+            style={{
+              width: 80,
+            }}
+          >
+            {Math.round(layer.thicknessAngled).toLocaleString()}
+            <Text size="1">{`mm${angle === undefined ? '' : ` ${Math.round(radToDeg(angle))}°`}`}</Text>
+          </Text>
+
+          <Text size="2" color="gray">
+            {Math.round(layer.thickness).toLocaleString()}
+            <Text size="1">mm</Text> nominal
+          </Text>
+        </>
+      )}
+    </Flex>
+  );
+}
+
 export function ShotDisplay() {
   const shot = useTankopediaTemporary((state) => state.shot);
   const inTracer = useRef<Mesh>(null);
+  const outTracer = useRef<Mesh>(null);
 
   useFrame(({ clock }) => {
     if (!shot || !inTracer.current) return;
 
-    const t = clock.elapsedTime % 1;
-    const scale1 = -Math.abs(2 * t - 1) + 1;
+    const t1 = clock.elapsedTime % 1;
+    const t2 = (clock.elapsedTime + 0.5) % 1;
 
-    inTracer.current.scale.set(1, scale1, 1);
-    inTracer.current.position.set(0, (1 - t) * inLength, 0);
+    inTracer.current.scale.set(1, 1 - 2 * Math.abs(t1 - 0.5), 1);
+    inTracer.current.position.set(0, (1 - t1) * inLength, 0);
+
+    if (!outTracer.current) return;
+
+    outTracer.current.scale.set(1, 1 - 2 * Math.abs(t2 - 0.5), 1);
+    outTracer.current.position.set(0, t2 * inLength, 0);
   });
 
   if (!shot) return null;
@@ -74,108 +168,103 @@ export function ShotDisplay() {
         }}
       >
         <Card ml="9" style={{ width: 300 }}>
-          <Flex direction="column" gap="1">
-            <Text color={shotStatusColors[shot.in.status]} weight="bold">
-              {shot.in.status !== 'blocked' && (
-                <>
-                  {Math.round(shot.damage).toLocaleString()}
-                  <Text size="1">hp</Text>
-                </>
-              )}
-              {` ${shotStatusNames[shot.in.status]} `}
-            </Text>
+          <Flex direction="column" gap="2">
+            <Flex direction="column" gap="1">
+              <Text color={shotStatusColors[shot.in.status]} weight="bold">
+                {shot.in.status !== 'blocked' &&
+                  shot.in.status !== 'ricochet' && (
+                    <>
+                      {Math.round(shot.damage).toLocaleString()}
+                      <Text size="1">hp</Text>
+                    </>
+                  )}
+                {` ${shotStatusNames[shot.in.status]} `}
+              </Text>
 
-            <Flex direction="column">
-              {shot.in.layers.map((layer, index) => {
-                const layerName =
-                  layer.type === ArmorType.External
-                    ? externalLayerNames[layer.variant]
-                    : layerTypeNames[`${layer.type}`];
-                const layerIndex =
-                  layer.type === null
-                    ? null
-                    : `${(shot.containsGaps ? index / 2 : index) + 1}.`;
-                const shotStatusColor =
-                  shot.in.status === 'splash'
-                    ? shotStatusColors.splash
-                    : shotStatusColors[layer.status];
+              <Flex direction="column">
+                {shot.in.layers.map((layer, index) => {
+                  const layerName =
+                    layer.type === ArmorType.External
+                      ? externalLayerNames[layer.variant]
+                      : layerTypeNames[`${layer.type}`];
+                  const layerIndex =
+                    layer.type === null
+                      ? undefined
+                      : `${(shot.containsGaps ? index / 2 : index) + 1}.`;
+                  const shotStatusColor =
+                    shot.in.status === 'splash'
+                      ? shotStatusColors.splash
+                      : shotStatusColors[layer.status];
 
-                return (
-                  <Flex align="center" gap="2">
-                    <Text
-                      size="1"
-                      color="gray"
-                      style={{
-                        width: 12,
-                      }}
-                    >
-                      {layerIndex}
-                    </Text>
-                    <Text
-                      size="2"
-                      color={shotStatusColor}
-                      style={{ width: 47 }}
-                    >
-                      {layerName}
-                    </Text>
-
-                    {layer.type === null && (
-                      <>
-                        <Text
-                          size="2"
-                          color={shotStatusColor}
-                          style={{
-                            width: 64,
-                          }}
-                        >
-                          {Math.round(layer.distance * 1000).toLocaleString()}
-                          <Text size="1">mm</Text>
-                        </Text>
-
-                        <Text size="2" color="gray">
-                          {Math.max(-100, Math.round(-50 * layer.distance))}%
-                          penetration
-                        </Text>
-                      </>
-                    )}
-
-                    {layer.type === ArmorType.External && (
-                      <Text
-                        size="2"
-                        color={shotStatusColor}
-                        style={{
-                          width: 64,
-                        }}
-                      >
-                        {Math.round(layer.thickness).toLocaleString()}
-                        <Text size="1">mm</Text>
-                      </Text>
-                    )}
-
-                    {(layer.type === ArmorType.Core ||
-                      layer.type === ArmorType.Spaced) && (
-                      <>
-                        <Text
-                          size="2"
-                          color={shotStatusColor}
-                          style={{
-                            width: 64,
-                          }}
-                        >
-                          {Math.round(layer.thicknessAngled).toLocaleString()}
-                          <Text size="1">mm</Text>
-                        </Text>
-
-                        <Text size="2" color="gray">
-                          {Math.round(layer.thickness).toLocaleString()}
-                          <Text size="1">mm</Text> nominal
-                        </Text>
-                      </>
-                    )}
-                  </Flex>
-                );
-              })}
+                  return (
+                    <LayerEntry
+                      layer={layer}
+                      layerIndex={layerIndex}
+                      layerName={layerName}
+                      shotStatusColor={shotStatusColor}
+                      angle={
+                        layer.type === ArmorType.Core ||
+                        layer.type === ArmorType.Spaced
+                          ? layer.angle
+                          : undefined
+                      }
+                    />
+                  );
+                })}
+              </Flex>
             </Flex>
+
+            {shot.out && shot.out.layers.length > 0 && (
+              <>
+                <Inset side="x">
+                  <Separator size="4" />
+                </Inset>
+
+                <Text color={shotStatusColors[shot.out.status]} weight="bold">
+                  {shot.out.status !== 'blocked' &&
+                    shot.out.status !== 'ricochet' && (
+                      <>
+                        {Math.round(shot.damage).toLocaleString()}
+                        <Text size="1">hp</Text>
+                      </>
+                    )}
+                  {` ${shotStatusNames[shot.out.status]} `}
+                </Text>
+
+                <Flex direction="column">
+                  {shot.out.layers.map((layer, index) => {
+                    const layerName =
+                      layer.type === ArmorType.External
+                        ? externalLayerNames[layer.variant]
+                        : layerTypeNames[`${layer.type}`];
+                    const shiftedIndex = index + shot.out!.layers.length;
+                    const layerIndex =
+                      layer.type === null
+                        ? undefined
+                        : `${(shot.containsGaps ? shiftedIndex / 2 : shiftedIndex) + 1}.`;
+                    const shotStatusColor =
+                      shot.out!.status === 'splash'
+                        ? shotStatusColors.splash
+                        : shotStatusColors[layer.status];
+
+                    return (
+                      <LayerEntry
+                        layer={layer}
+                        layerIndex={layerIndex}
+                        layerName={layerName}
+                        shotStatusColor={shotStatusColor}
+                        angle={
+                          layer.type === ArmorType.Core ||
+                          layer.type === ArmorType.Spaced
+                            ? layer.angle
+                            : undefined
+                        }
+                      />
+                    );
+                  })}
+                </Flex>
+              </>
+            )}
           </Flex>
         </Card>
       </Html>
@@ -204,7 +293,7 @@ export function ShotDisplay() {
       <group
         position={inLast.point}
         rotation={new Euler().setFromQuaternion(
-          new Quaternion().setFromUnitVectors(J_HAT, shot.in.cameraNormal),
+          new Quaternion().setFromUnitVectors(J_HAT, shot.in.surfaceNormal),
         )}
       >
         <mesh position={[0, inLength / 2, 0]}>
@@ -221,6 +310,29 @@ export function ShotDisplay() {
           <meshBasicMaterial color="red" />
         </mesh>
       </group>
+
+      {shot.out && (
+        <group
+          position={inLast.point}
+          rotation={new Euler().setFromQuaternion(
+            new Quaternion().setFromUnitVectors(J_HAT, shot.out.surfaceNormal),
+          )}
+        >
+          <mesh position={[0, inLength / 2, 0]}>
+            <cylinderGeometry
+              args={[TRACER_THIN / 2, TRACER_THIN / 2, inLength]}
+            />
+            <meshBasicMaterial depthTest={false} />
+          </mesh>
+
+          <mesh ref={outTracer} position={[0, inLength / 2, 0]}>
+            <cylinderGeometry
+              args={[TRACER_THICK / 2, TRACER_THICK / 2, inLength]}
+            />
+            <meshBasicMaterial color="red" />
+          </mesh>
+        </group>
+      )}
     </group>
   );
 }

src/components/Armor/components/SpacedArmorSceneComponent/index.tsx

@@ -5,7 +5,9 @@ import {
   Object3D,
   Plane,
   Quaternion,
+  Raycaster,
   Scene,
+  Vector3,
 } from 'three';
 import { degToRad } from 'three/src/math/MathUtils';
 import { isExplosive } from '../../../../core/blitz/isExplosive';
@@ -77,6 +79,262 @@ export function SpacedArmorSceneComponent({
 }: SpacedArmorSceneComponentProps) {
   const camera = useThree((state) => state.camera);
 
+  async function shoot(
+    point: Vector3,
+    intersections: Intersection[],
+    allowRicochet: boolean,
+  ) {
+    const { antagonist, protagonist } = useDuel.getState();
+    const shell = antagonist!.shell;
+    const cameraNormal = camera.position.clone().sub(point).normalize();
+    const shot: Shot = {
+      damage: -1,
+      containsGaps: shell.type === ShellType.HEAT,
+      in: {
+        surfaceNormal: cameraNormal,
+        layers: [],
+        status: 'blocked',
+      },
+    };
+
+    const hasCalibratedShells = await hasEquipment(
+      103,
+      antagonist!.tank.equipment,
+      antagonist!.equipmentMatrix,
+    );
+    const hasEnhancedArmor = await hasEquipment(
+      110,
+      protagonist!.tank.equipment,
+      protagonist!.equipmentMatrix,
+    );
+    const penetration =
+      resolveNearPenetration(shell.penetration) *
+      resolvePenetrationCoefficient(hasCalibratedShells, shell.type);
+    const thicknessCoefficient = hasEnhancedArmor ? 1.03 : 1;
+    const filteredIntersections = intersections.filter(
+      (intersection) => 'type' in intersection.object.userData,
+    ) as unknown as Intersection<Object3D & { userData: ArmorUserData }>[];
+    const encounteredExternalModuleVariants: ExternalModuleVariant[] = [];
+    const noDuplicateIntersections: typeof filteredIntersections = [];
+
+    for (const intersection of filteredIntersections) {
+      if (intersection.object.userData.type === ArmorType.External) {
+        if (
+          !encounteredExternalModuleVariants.includes(
+            intersection.object.userData.variant,
+          )
+        ) {
+          noDuplicateIntersections.push(intersection);
+          encounteredExternalModuleVariants.push(
+            intersection.object.userData.variant,
+          );
+        }
+      } else {
+        noDuplicateIntersections.push(intersection);
+
+        if (intersection.object.userData.type === ArmorType.Core) {
+          break;
+        }
+      }
+    }
+
+    let remainingPenetration = penetration;
+    let index = 0;
+    for (const intersection of noDuplicateIntersections) {
+      const layer = intersection.object.userData;
+      const surfaceNormal = intersection
+        .normal!.clone()
+        .applyQuaternion(
+          intersection.object.getWorldQuaternion(new Quaternion()),
+        );
+
+      if (shell.type === ShellType.HEAT && index > 0) {
+        const lastLayer = shot.in.layers.at(-1) as ShotLayerBase;
+        const distance = lastLayer.point.distanceTo(intersection.point);
+        remainingPenetration -= 0.5 * remainingPenetration * distance;
+        const blocked = remainingPenetration <= 0;
+
+        shot.in.layers.push({
+          type: null,
+          distance,
+          status: blocked ? 'blocked' : 'penetration',
+        });
+
+        if (blocked) break;
+      }
+
+      if (layer.type === ArmorType.External) {
+        const thickness = layer.thickness * thicknessCoefficient;
+        remainingPenetration -= thickness;
+        const blocked =
+          remainingPenetration <= 0 || shell.type === ShellType.HE;
+
+        shot.in.layers.push({
+          type: ArmorType.External,
+          index,
+          thickness,
+          point: intersection.point,
+          surfaceNormal,
+          status: blocked ? 'blocked' : 'penetration',
+          variant: layer.variant,
+        });
+      } else {
+        const thickness = layer.thickness;
+        const ricochet = degToRad(
+          isExplosive(shell.type) ? 90 : shell.ricochet!,
+        );
+        const angle = surfaceNormal.angleTo(cameraNormal);
+        const threeCalibersRule =
+          shell.caliber > thickness * 3 || index > 0 || !allowRicochet;
+        const twoCalibersRule = shell.caliber > thickness * 2;
+        const normalization = degToRad(shell.normalization ?? 0);
+        const finalNormalization = twoCalibersRule
+          ? (1.4 * normalization * shell.caliber) / (2.0 * thickness)
+          : normalization;
+        const finalThickness =
+          thickness / Math.cos(Math.max(0, angle - finalNormalization));
+
+        if (!threeCalibersRule && angle >= ricochet) {
+          remainingPenetration *= 0.75;
+
+          shot.in.layers.push({
+            type: layer.type,
+            index,
+            thickness,
+            thicknessAngled: finalThickness,
+            point: intersection.point,
+            surfaceNormal,
+            status: 'ricochet',
+            angle,
+          });
+
+          break;
+        } else {
+          remainingPenetration -= finalThickness;
+          const blocked = remainingPenetration <= 0;
+
+          shot.in.layers.push({
+            type: layer.type,
+            index,
+            thickness,
+            thicknessAngled: finalThickness,
+            point: intersection.point,
+            surfaceNormal: intersection.face!.normal,
+            status: blocked ? 'blocked' : 'penetration',
+            angle,
+          });
+        }
+      }
+
+      if (shell.type !== ShellType.HE && remainingPenetration <= 0) {
+        break;
+      }
+
+      index++;
+    }
+
+    const lastLayer = shot.in.layers.at(-1) as ShotLayerNonExternal | undefined;
+    const firstLayer = shot.in.layers[0] as ShotLayerBase | undefined;
+
+    if (!lastLayer || !firstLayer) {
+      return null;
+    } else {
+      if (shell.type === ShellType.HE) {
+        const totalSpacedArmorThickness = shot.in.layers.reduce(
+          (acc, layer) => {
+            if (layer.type === null || layer.type === ArmorType.Core) {
+              return acc;
+            }
+
+            if (layer.type === ArmorType.External) {
+              return acc + layer.thickness;
+            }
+
+            return acc + layer.thicknessAngled;
+          },
+          0,
+        );
+        const distanceFromSpacedArmor = firstLayer.point.distanceTo(
+          lastLayer.point,
+        );
+        const finalDamage = Math.max(
+          0,
+          0.5 *
+            shell.damage.armor *
+            (1 - distanceFromSpacedArmor / shell.explosionRadius!) -
+            1.1 *
+              (lastLayer.thicknessAngled +
+                Math.min(penetration, totalSpacedArmorThickness)),
+        );
+
+        /**
+         * Above is some peculiar math. We're multiplying 1.1 by the
+         * thickness of the core plate plus the total spaced armor
+         * thickness capped to the penetration itself. This is because
+         * the shader is normalized by the penetration value; hence,
+         * the total spaced armor thickness cannot ever be thicker
+         * than the penetration. This is a precision error on the
+         * shader-side and I do not intend on fixing it. Instead,
+         * for parity's sake, I am capping the value here.
+         */
+
+        if (shot.in.layers.length > 1 || lastLayer.status === 'blocked') {
+          shot.in.status = finalDamage > 0 ? 'splash' : 'blocked';
+          shot.damage = finalDamage;
+        } else {
+          shot.in.status = 'penetration';
+          shot.damage = shell.damage.armor;
+        }
+      } else {
+        if (lastLayer.status === 'blocked') {
+          shot.in.status = 'blocked';
+          shot.damage = 0;
+        } else if (lastLayer.status === 'penetration') {
+          shot.in.status = 'penetration';
+          shot.damage = shell.damage.armor;
+        } else {
+          const caster = new Raycaster();
+          // https://math.stackexchange.com/a/13263/1222875
+          const shellNormal = cameraNormal.clone().multiplyScalar(-1);
+          const ricochetNormal = shellNormal
+            .clone()
+            .sub(
+              lastLayer.surfaceNormal
+                .clone()
+                .multiplyScalar(2 * shellNormal.dot(lastLayer.surfaceNormal)),
+            );
+
+          caster.set(lastLayer.point, ricochetNormal);
+
+          const ricochetIntersections = caster.intersectObjects(
+            scene.children,
+            true,
+          );
+          const outShot = await shoot(
+            lastLayer.point,
+            ricochetIntersections,
+            false,
+          );
+
+          shot.in.status = 'ricochet';
+          if (outShot === null) {
+            shot.damage = 0;
+            shot.out = {
+              surfaceNormal: ricochetNormal,
+              layers: [],
+              status: 'ricochet',
+            };
+          } else {
+            shot.damage = outShot.damage;
+            shot.out = outShot.in;
+          }
+        }
+      }
+    }
+
+    return shot;
+  }
+
   return (
     <>
       {props.type === ArmorType.Core &&
@@ -93,231 +351,12 @@ export function SpacedArmorSceneComponent({
             async onClick(event) {
               event.stopPropagation();
 
-              const { antagonist, protagonist } = useDuel.getState();
-              const shell = antagonist!.shell;
-              const cameraNormal = camera.position
-                .clone()
-                .sub(event.point)
-                .normalize();
-              const shot: Shot = {
-                damage: -1,
-                containsGaps: shell.type === ShellType.HEAT,
-                in: {
-                  cameraNormal,
-                  layers: [],
-                  status: 'blocked',
-                },
-                point: event.point,
-              };
+              const shot = (await shoot(
+                event.point,
+                event.intersections,
+                true,
+              ))!;
 
-              const hasCalibratedShells = await hasEquipment(
-                103,
-                antagonist!.tank.equipment,
-                antagonist!.equipmentMatrix,
-              );
-              const hasEnhancedArmor = await hasEquipment(
-                110,
-                protagonist!.tank.equipment,
-                protagonist!.equipmentMatrix,
-              );
-              const penetration =
-                resolveNearPenetration(shell.penetration) *
-                resolvePenetrationCoefficient(hasCalibratedShells, shell.type);
-              const thicknessCoefficient = hasEnhancedArmor ? 1.03 : 1;
-              const filteredIntersections = event.intersections.filter(
-                (intersection) => 'type' in intersection.object.userData,
-              ) as unknown as Intersection<
-                Object3D & { userData: ArmorUserData }
-              >[];
-              const encounteredExternalModuleVariants: ExternalModuleVariant[] =
-                [];
-              const noDuplicateIntersections: typeof filteredIntersections = [];
-
-              for (const intersection of filteredIntersections) {
-                if (intersection.object.userData.type === ArmorType.External) {
-                  if (
-                    !encounteredExternalModuleVariants.includes(
-                      intersection.object.userData.variant,
-                    )
-                  ) {
-                    noDuplicateIntersections.push(intersection);
-                    encounteredExternalModuleVariants.push(
-                      intersection.object.userData.variant,
-                    );
-                  }
-                } else {
-                  noDuplicateIntersections.push(intersection);
-
-                  if (intersection.object.userData.type === ArmorType.Core) {
-                    break;
-                  }
-                }
-              }
-
-              let remainingPenetration = penetration;
-              let index = 0;
-              for (const intersection of noDuplicateIntersections) {
-                const layer = intersection.object.userData;
-
-                if (shell.type === ShellType.HEAT && index > 0) {
-                  const lastLayer = shot.in.layers.at(-1) as ShotLayerBase;
-                  const distance = lastLayer.point.distanceTo(
-                    intersection.point,
-                  );
-                  remainingPenetration -= 0.5 * remainingPenetration * distance;
-                  const blocked = remainingPenetration <= 0;
-
-                  shot.in.layers.push({
-                    type: null,
-                    distance,
-                    status: blocked ? 'blocked' : 'penetration',
-                  });
-
-                  if (blocked) break;
-                }
-
-                if (layer.type === ArmorType.External) {
-                  const thickness = layer.thickness * thicknessCoefficient;
-                  remainingPenetration -= thickness;
-                  const blocked =
-                    remainingPenetration <= 0 || shell.type === ShellType.HE;
-
-                  shot.in.layers.push({
-                    type: ArmorType.External,
-                    index,
-                    thickness,
-                    point: intersection.point,
-                    surfaceNormal: intersection.face!.normal,
-                    status: blocked ? 'blocked' : 'penetration',
-                    variant: layer.variant,
-                  });
-                } else {
-                  const thickness = layer.thickness;
-                  const ricochet = degToRad(
-                    isExplosive(shell.type) ? 90 : shell.ricochet!,
-                  );
-                  const surfaceNormal = intersection
-                    .normal!.clone()
-                    .applyQuaternion(
-                      event.object.getWorldQuaternion(new Quaternion()),
-                    );
-                  const angle = surfaceNormal.angleTo(cameraNormal);
-                  const threeCalibersRule =
-                    shell.caliber > thickness * 3 || index > 0;
-                  const twoCalibersRule = shell.caliber > thickness * 2;
-                  const normalization = degToRad(shell.normalization ?? 0);
-                  const finalNormalization = twoCalibersRule
-                    ? (1.4 * normalization * shell.caliber) / (2.0 * thickness)
-                    : normalization;
-                  const finalThickness =
-                    thickness /
-                    Math.cos(Math.max(0, angle - finalNormalization));
-
-                  if (!threeCalibersRule && angle >= ricochet) {
-                    remainingPenetration *= 0.75;
-
-                    shot.in.layers.push({
-                      type: layer.type,
-                      index,
-                      thickness,
-                      thicknessAngled: finalThickness,
-                      point: intersection.point,
-                      surfaceNormal: intersection.face!.normal,
-                      status: 'ricochet',
-                      angle,
-                    });
-
-                    break;
-                  } else {
-                    remainingPenetration -= finalThickness;
-                    const blocked = remainingPenetration <= 0;
-
-                    shot.in.layers.push({
-                      type: layer.type,
-                      index,
-                      thickness,
-                      thicknessAngled: finalThickness,
-                      point: intersection.point,
-                      surfaceNormal: intersection.face!.normal,
-                      status: blocked ? 'blocked' : 'penetration',
-                      angle,
-                    });
-                  }
-                }
-
-                if (shell.type !== ShellType.HE && remainingPenetration <= 0) {
-                  break;
-                }
-
-                index++;
-              }
-
-              const lastLayer = shot.in.layers.at(-1) as ShotLayerNonExternal;
-              const firstLayer = shot.in.layers[0] as ShotLayerBase;
-
-              if (shell.type === ShellType.HE) {
-                const totalSpacedArmorThickness = shot.in.layers.reduce(
-                  (acc, layer) => {
-                    if (layer.type === null || layer.type === ArmorType.Core) {
-                      return acc;
-                    }
-
-                    if (layer.type === ArmorType.External) {
-                      return acc + layer.thickness;
-                    }
-
-                    return acc + layer.thicknessAngled;
-                  },
-                  0,
-                );
-                const distanceFromSpacedArmor = firstLayer.point.distanceTo(
-                  lastLayer.point,
-                );
-                const finalDamage = Math.max(
-                  0,
-                  0.5 *
-                    shell.damage.armor *
-                    (1 - distanceFromSpacedArmor / shell.explosionRadius!) -
-                    1.1 *
-                      (lastLayer.thicknessAngled +
-                        Math.min(penetration, totalSpacedArmorThickness)),
-                );
-
-                /**
-                 * Above is some peculiar math. We're multiplying 1.1 by the
-                 * thickness of the core plate plus the total spaced armor
-                 * thickness capped to the penetration itself. This is because
-                 * the shader is normalized by the penetration value; hence,
-                 * the total spaced armor thickness cannot ever be thicker
-                 * than the penetration. This is a precision error on the
-                 * shader-side and I do not intend on fixing it. Instead,
-                 * for parity's sake, I am capping the value here.
-                 */
-
-                if (
-                  shot.in.layers.length > 1 ||
-                  lastLayer.status === 'blocked'
-                ) {
-                  shot.in.status = finalDamage > 0 ? 'splash' : 'blocked';
-                  shot.damage = finalDamage;
-                } else {
-                  shot.in.status = 'penetration';
-                  shot.damage = shell.damage.armor;
-                }
-              } else {
-                if (lastLayer.status === 'blocked') {
-                  shot.in.status = 'blocked';
-                  shot.damage = 0;
-                } else if (lastLayer.status === 'penetration') {
-                  shot.in.status = 'penetration';
-                  shot.damage = shell.damage.armor;
-                } else {
-                  // check second array for result
-                  shot.in.status = 'ricochet';
-                }
-              }
-
-              console.log(shot);
               useTankopediaTemporary.setState({ shot });
             },
           },

src/stores/tankopedia.ts

@@ -77,14 +77,14 @@ export type ShotLayer = ShotLayerExternal | ShotLayerNonExternal | ShotLayerGap;
 export type Shot = {
   containsGaps: boolean;
   damage: number;
-  point: Vector3;
 
   in: {
-    cameraNormal: Vector3;
+    surfaceNormal: Vector3;
     status: ShotStatus;
     layers: ShotLayer[];
   };
   out?: {
+    surfaceNormal: Vector3;
     status: ShotStatus;
     layers: ShotLayer[];
   };