From 5fba0cf01188cc31d8ea6a1b031d29cbbf784e0e Mon Sep 17 00:00:00 2001
From: realtradam <github@tradam.dev>
Date: Sun, 11 Dec 2022 06:15:05 -0500
Subject: basic multi planet and multi plane gravity

---
 Assets/Scripts/GravityTypes/GravityPlane.cs       | 45 +++++++++++++++++++++
 Assets/Scripts/GravityTypes/GravityPlane.cs.meta  | 11 +++++
 Assets/Scripts/GravityTypes/GravitySource.cs      | 22 ++++++++++
 Assets/Scripts/GravityTypes/GravitySource.cs.meta | 11 +++++
 Assets/Scripts/GravityTypes/GravitySphere.cs      | 49 +++++++++++++++++++++++
 Assets/Scripts/GravityTypes/GravitySphere.cs.meta | 11 +++++
 6 files changed, 149 insertions(+)
 create mode 100644 Assets/Scripts/GravityTypes/GravityPlane.cs
 create mode 100644 Assets/Scripts/GravityTypes/GravityPlane.cs.meta
 create mode 100644 Assets/Scripts/GravityTypes/GravitySource.cs
 create mode 100644 Assets/Scripts/GravityTypes/GravitySource.cs.meta
 create mode 100644 Assets/Scripts/GravityTypes/GravitySphere.cs
 create mode 100644 Assets/Scripts/GravityTypes/GravitySphere.cs.meta

(limited to 'Assets/Scripts/GravityTypes')

diff --git a/Assets/Scripts/GravityTypes/GravityPlane.cs b/Assets/Scripts/GravityTypes/GravityPlane.cs
new file mode 100644
index 0000000..81a7005
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravityPlane.cs
@@ -0,0 +1,45 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GravityPlane : GravitySource
+{
+	[SerializeField]
+	float gravity = 9.81f;
+
+	[SerializeField]
+	float range = 1f;
+
+	public override Vector3 GetGravity(Vector3 position)
+	{
+		Vector3 up = transform.up;
+		float distance = Vector3.Dot(up, position - transform.position);
+		if(distance > range)
+			return Vector3.zero;
+
+		float g = -gravity;
+		if (distance > 0f)
+			g *= 1f - distance / range;
+		return -gravity * up;
+	}
+
+	void OnDrawGizmos()
+	{
+		Vector3 scale = transform.localScale;
+		scale.y = range;
+		Gizmos.matrix = Matrix4x4.TRS(
+				transform.position,
+				transform.rotation,
+				scale
+				);
+		//transform.localToWorldMatrix;
+		Vector3 size = new Vector3(1f, 0f, 1f);
+		Gizmos.color = Color.yellow;
+		Gizmos.DrawWireCube(Vector3.zero, size);
+		if (range > 0f)
+		{
+			Gizmos.color = Color.cyan;
+			Gizmos.DrawWireCube(Vector3.up, size);
+		}
+	}
+}
diff --git a/Assets/Scripts/GravityTypes/GravityPlane.cs.meta b/Assets/Scripts/GravityTypes/GravityPlane.cs.meta
new file mode 100644
index 0000000..e843793
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravityPlane.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 76c633abed7adf812b42483ed0574852
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/GravityTypes/GravitySource.cs b/Assets/Scripts/GravityTypes/GravitySource.cs
new file mode 100644
index 0000000..0e2cc94
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravitySource.cs
@@ -0,0 +1,22 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GravitySource : MonoBehaviour
+{
+
+	public virtual Vector3 GetGravity(Vector3 position)
+	{
+		return Physics.gravity;
+	}
+
+	void OnEnable()
+	{
+		CustomGravity.Register(this);
+	}
+
+	void OnDisable()
+	{
+		CustomGravity.Unregister(this);
+	}
+}
diff --git a/Assets/Scripts/GravityTypes/GravitySource.cs.meta b/Assets/Scripts/GravityTypes/GravitySource.cs.meta
new file mode 100644
index 0000000..2f4fe9f
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravitySource.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 3bf5ff68c1211656995c0e00b5f588c2
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/Scripts/GravityTypes/GravitySphere.cs b/Assets/Scripts/GravityTypes/GravitySphere.cs
new file mode 100644
index 0000000..2eb67a8
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravitySphere.cs
@@ -0,0 +1,49 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class GravitySphere : GravitySource
+{
+	[SerializeField]
+	float gravity = 0.981f;
+
+	[SerializeField, Min(0f)]
+	float outerRadius = 10f;
+	[SerializeField, Min(0f)]
+	float outerFalloffRadius = 15f;
+
+	public override Vector3 GetGravity(Vector3 position)
+	{
+		Vector3 vector = transform.position - position;
+		float distance = vector.magnitude;
+		if(distance > outerFalloffRadius)
+		{
+			return Vector3.zero;
+		}
+		float g = gravity / distance;
+		return g * vector;
+	}
+
+	void OnDrawGizmos()
+	{
+		Vector3 p = transform.position;
+		Gizmos.color = Color.yellow;
+		Gizmos.DrawWireSphere(p, outerRadius);
+		if(outerFalloffRadius > outerRadius)
+		{
+			Gizmos.color = Color.cyan;
+			Gizmos.DrawWireSphere(p, outerFalloffRadius);
+		}
+	}
+
+	void Awake()
+	{
+		OnValidate();
+	}
+
+	void OnValidate()
+	{
+		outerFalloffRadius = Mathf.Max(outerFalloffRadius, outerRadius);
+	}
+
+}
diff --git a/Assets/Scripts/GravityTypes/GravitySphere.cs.meta b/Assets/Scripts/GravityTypes/GravitySphere.cs.meta
new file mode 100644
index 0000000..e74fe93
--- /dev/null
+++ b/Assets/Scripts/GravityTypes/GravitySphere.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 777d997ba72cd51668cb6e0122d8a184
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
-- 
cgit v1.2.3