Project/Gravity: Implement GravityPoint (#769)

data/file_list.yml

@@ -293124,20 +293124,22 @@ Project/Gravity/GravityHolder.o:
     size: 424
     label: _ZNK2al13GravityHolder19tryCalcBlendGravityEPN4sead7Vector3IfEERKS3_
     status: NotDecompiled
+Project/Gravity/GravityPoint.o:
+  '.text':
   - offset: 0xa604ec
     size: 32
     label:
     - _ZN2al12GravityPointC1Ev
     - _ZN2al12GravityPointC2Ev
-    status: NotDecompiled
+    status: Matching
   - offset: 0xa6050c
     size: 100
     label: _ZN2al12GravityPoint21initWithPlacementInfoERKNS_13PlacementInfoE
-    status: NotDecompiled
+    status: Matching
   - offset: 0xa60570
     size: 180
     label: _ZNK2al12GravityPoint14tryCalcGravityEPN4sead7Vector3IfEERKS3_
-    status: NotDecompiled
+    status: Matching
 Project/HitSensor/HitSensor.o:
   '.text':
   - offset: 0xa60624

lib/al/Project/Gravity/GravityPoint.cpp

@@ -0,0 +1,26 @@
+#include "Project/Gravity/GravityPoint.h"
+
+#include "Library/Math/MathUtil.h"
+#include "Library/Placement/PlacementFunction.h"
+
+namespace al {
+
+GravityPoint::GravityPoint() = default;
+
+void GravityPoint::initWithPlacementInfo(const PlacementInfo& info) {
+    tryGetTrans(&mTrans, info);
+    sead::Vector3f scale = sead::Vector3f::zero;
+    tryGetScale(&scale, info);
+    mRadius = scale.x * 50.0f;
+}
+
+bool GravityPoint::tryCalcGravity(sead::Vector3f* gravity, const sead::Vector3f& position) const {
+    if ((mTrans - position).length() <= mRadius) {
+        *gravity = (mTrans - position);
+        tryNormalizeOrDirZ(gravity);
+        return true;
+    }
+    return false;
+}
+
+}  // namespace al

lib/al/Project/Gravity/GravityPoint.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <math/seadVector.h>
+
+namespace al {
+class PlacementInfo;
+
+class GravityPoint {
+public:
+    GravityPoint();
+
+    void initWithPlacementInfo(const PlacementInfo& info);
+    bool tryCalcGravity(sead::Vector3f* gravity, const sead::Vector3f& position) const;
+
+private:
+    sead::Vector3f mTrans = sead::Vector3f::zero;
+    f32 mRadius = 0.0f;
+};
+
+static_assert(sizeof(GravityPoint) == 0x10);
+
+}  // namespace al