尝试添加obb与aabb的碰撞检测

src/main/java/com/atsuishio/superbwarfare/entity/projectile/ProjectileEntity.java

@@ -4,6 +4,7 @@ import com.atsuishio.superbwarfare.block.BarbedWireBlock;
 import com.atsuishio.superbwarfare.component.ModDataComponents;
 import com.atsuishio.superbwarfare.config.server.ProjectileConfig;
 import com.atsuishio.superbwarfare.entity.DPSGeneratorEntity;
+import com.atsuishio.superbwarfare.entity.OBBEntity;
 import com.atsuishio.superbwarfare.entity.TargetEntity;
 import com.atsuishio.superbwarfare.entity.mixin.ICustomKnockback;
 import com.atsuishio.superbwarfare.entity.vehicle.base.VehicleEntity;
@@ -155,6 +156,7 @@ public class ProjectileEntity extends Projectile implements IEntityWithComplexSp
     @Nullable
     protected List<EntityResult> findEntitiesOnPath(Vec3 startVec, Vec3 endVec) {
         List<EntityResult> hitEntities = new ArrayList<>();
+        // TODO 换一个允许检测obb的方法
         List<Entity> entities = this.level().getEntities(
                 this,
                 this.getBoundingBox()
@@ -179,6 +181,14 @@ public class ProjectileEntity extends Projectile implements IEntityWithComplexSp
     @Nullable
     private EntityResult getHitResult(Entity entity, Vec3 startVec, Vec3 endVec) {
         double expandHeight = entity instanceof Player && !entity.isCrouching() ? 0.0625 : 0.0;
+
+        Vec3 hitPos;
+        if (entity instanceof OBBEntity obbEntity) {
+            OBB obb = obbEntity.getOBB();
+            var obbVec = obb.clip(startVec.toVector3f(), endVec.toVector3f()).orElse(null);
+            if (obbVec == null) return null;
+            hitPos = new Vec3(obbVec);
+        } else {
             AABB boundingBox = entity.getBoundingBox();
             Vec3 velocity = new Vec3(entity.getX() - entity.xOld, entity.getY() - entity.yOld, entity.getZ() - entity.zOld);
 
@@ -188,7 +198,6 @@ public class ProjectileEntity extends Projectile implements IEntityWithComplexSp
                 velocity = HitboxHelper.getVelocity(player, ping);
             }
             boundingBox = boundingBox.expandTowards(0, expandHeight, 0);
-
             boundingBox = boundingBox.expandTowards(velocity.x, velocity.y, velocity.z);
 
             double playerHitboxOffset = 3;
@@ -208,7 +217,8 @@ public class ProjectileEntity extends Projectile implements IEntityWithComplexSp
                 boundingBox = boundingBox.inflate(3);
             }
 
-        Vec3 hitPos = boundingBox.clip(startVec, endVec).orElse(null);
+            hitPos = boundingBox.clip(startVec, endVec).orElse(null);
+        }
 
         if (hitPos == null) {
             return null;

src/main/java/com/atsuishio/superbwarfare/mixins/EntityRenderDispatcherMixin.java

@@ -20,7 +20,7 @@ public class EntityRenderDispatcherMixin {
             at = @At("RETURN"))
     private static void renderHitbox(PoseStack poseStack, VertexConsumer buffer, Entity p_entity, float red, float green, float blue, float alpha, CallbackInfo ci) {
         if (p_entity instanceof OBBEntity obbEntity && p_entity instanceof VehicleEntity vehicle) {
-            OBBRenderer.INSTANCE.render(vehicle, obbEntity.getOBB(), poseStack, buffer, 1, 1, 1, 1, Minecraft.getInstance().getTimer().getRealtimeDeltaTicks());
+            OBBRenderer.INSTANCE.render(vehicle, obbEntity.getOBB(), poseStack, buffer, 0, 1, 0, 1, Minecraft.getInstance().getTimer().getRealtimeDeltaTicks());
         }
     }
 }

src/main/java/com/atsuishio/superbwarfare/tools/OBB.java

@@ -6,6 +6,8 @@ import org.joml.Math;
 import org.joml.Quaternionf;
 import org.joml.Vector3f;
 
+import java.util.Optional;
+
 /**
  * Codes based on @AnECanSaiTin's <a href="https://github.com/AnECanSaiTin/HitboxAPI">HitboxAPI</a>
  *
@@ -130,4 +132,85 @@ public record OBB(Vector3f center, Vector3f extents, Quaternionf rotation) {
 
         return nearP;
     }
+
+    public Optional<Vector3f> clip(Vector3f pFrom, Vector3f pTo) {
+        // 计算OBB的局部坐标系基向量（世界坐标系中的方向）
+        Vector3f[] axes = new Vector3f[3];
+        axes[0] = rotation.transform(new Vector3f(1, 0, 0));
+        axes[1] = rotation.transform(new Vector3f(0, 1, 0));
+        axes[2] = rotation.transform(new Vector3f(0, 0, 1));
+
+        // 将点转换到OBB局部坐标系
+        Vector3f localFrom = worldToLocal(pFrom, axes);
+        Vector3f localTo = worldToLocal(pTo, axes);
+
+        // 射线方向（局部坐标系）
+        Vector3f dir = new Vector3f(localTo).sub(localFrom);
+
+        // Slab算法参数
+        double tEnter = 0.0;      // 进入时间
+        double tExit = 1.0;       // 离开时间
+
+        // 在三个轴上执行Slab算法
+        for (int i = 0; i < 3; i++) {
+            double min = -extents.get(i);
+            double max = extents.get(i);
+            double origin = localFrom.get(i);
+            double direction = dir.get(i);
+
+            // 处理射线平行于轴的情况
+            if (Math.abs(direction) < 1e-7f) {
+                if (origin < min || origin > max) {
+                    return Optional.empty();
+                }
+                continue;
+            }
+
+            // 计算与两个平面的交点参数
+            double t1 = (min - origin) / direction;
+            double t2 = (max - origin) / direction;
+
+            // 确保tNear是近平面，tFar是远平面
+            double tNear = Math.min(t1, t2);
+            double tFar = Math.max(t1, t2);
+
+            // 更新进入/离开时间
+            if (tNear > tEnter) tEnter = tNear;
+            if (tFar < tExit) tExit = tFar;
+
+            // 检查是否提前退出（无交点）
+            if (tEnter > tExit) {
+                return Optional.empty();
+            }
+        }
+
+        // 检查是否有有效交点
+        if (tEnter >= 0 && tEnter <= 1) {
+            // 计算局部坐标系中的交点
+            Vector3f localHit = new Vector3f(dir).mul((float) tEnter).add(localFrom);
+            // 转换回世界坐标系
+            return Optional.of(localToWorld(localHit, axes));
+        }
+
+        return Optional.empty();
+    }
+
+    // 世界坐标转局部坐标
+    private Vector3f worldToLocal(Vector3f worldPoint, Vector3f[] axes) {
+        Vector3f rel = new Vector3f(worldPoint).sub(center);
+        return new Vector3f(
+                rel.dot(axes[0]),
+                rel.dot(axes[1]),
+                rel.dot(axes[2])
+        );
+    }
+
+    // 局部坐标转世界坐标
+    private Vector3f localToWorld(Vector3f localPoint, Vector3f[] axes) {
+        Vector3f result = new Vector3f(center);
+        result.add(axes[0].mul(localPoint.x, new Vector3f()));
+        result.add(axes[1].mul(localPoint.y, new Vector3f()));
+        result.add(axes[2].mul(localPoint.z, new Vector3f()));
+        return result;
+    }
 }