Differences

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--- physics [2020/05/24 13:30] – [Example] admin
+++ physics [2020/06/06 15:37] – [Max Contacts] admin
@@ Line 74: / Line 74: @@
 Even if there is no object limit, this will limit your scene indirectly.
+==== Types of Body ====
+Q3 Physics Engine allows to decide between 3 different body types.
+^Type ^Description ^
+|TQ3BodyType.eStaticBody | Static bodies will not be move or influenced by mass and impulses. Use this type for defining a plane / floor.|
+|TQ3BodyType.eDynamicBody|Dynamic bodies will move, handle forces influenced by mass and impulses. Use this type by default for any kind of physics-engine handled instances.|
+|TQ3BodyType.eKinematicBody|Kinematic bodies will be moved, but will not be influenced by mass and impulses. Use this type as an alternative to dynamic bodies. |
 ===== Colliders =====
@@ Line 179: / Line 186: @@
 **__CAUTION:__ By this methods you can influence physical mechanics so heavily, that overstep bounds / limits, which may lead to unexpected behaviour.**
+===== Example =====
+For a working physics system you need a TGorillaPhysicsSystem component on your form.
+<file pascal Form1.pas>
+type
+  TForm1 = class(TForm)
+    GorillaViewport1: TGorillaViewport;
+    Light1: TLight;
+    Dummy1: TDummy;
+    Camera1: TCamera;
+    GorillaPhysicsSystem1: TGorillaPhysicsSystem;
+    Plane1: TPlane;
+    GorillaCube1: TGorillaCube;
+    PhysicsTimer1: TTimer;
+    GorillaSphere1: TGorillaSphere;
+    LightMaterialSource1: TLightMaterialSource;
+    LightMaterialSource2: TLightMaterialSource;
+    procedure FormCreate(Sender: TObject);
+    procedure PhysicsTimer1Timer(Sender: TObject);
+  private
+    { Private-Deklarationen }
+  public
+    { Public-Deklarationen }
+  end;
+var
+  Form1: TForm1;
+implementation
+{$R *.fmx}
+uses
+  Gorilla.Physics, Gorilla.Physics.Q3.Body;
+procedure TForm1.FormCreate(Sender: TObject);
+var LPrefab : TGorillaColliderSettings;
+begin
+  // the plane should be a static body, otherwise it will fall in to nothingness
+  LPrefab := TGorillaColliderSettings.Create(TQ3BodyType.eStaticBody);
+  GorillaPhysicsSystem1.AddBoxCollider(Plane1, LPrefab);
+  // the cube is a dynamic / moveable body which collides with the plane and sphere
+  LPrefab := TGorillaColliderSettings.Create(TQ3BodyType.eDynamicBody);
+  GorillaPhysicsSystem1.AddBoxCollider(GorillaCube1, LPrefab);
+  // the sphere is a dynamic / moveable body which collides with the plane and cube
+  LPrefab := TGorillaColliderSettings.Create(TQ3BodyType.eDynamicBody);
+  GorillaPhysicsSystem1.AddSphereCollider(GorillaSphere1, LPrefab);
+  // we activate the physics system
+  GorillaPhysicsSystem1.Active := true;
+  // and we need to activate the physics timer for constant updates
+  PhysicsTimer1.Enabled := true;
+end;
+procedure TForm1.PhysicsTimer1Timer(Sender: TObject);
+var LDelta : Single;
+begin
+  // get the delta time => time since the last step() was called
+  LDelta := GorillaPhysicsSystem1.GetDeltaTime();
+  GorillaPhysicsSystem1.Step(LDelta);
+  GorillaViewport1.Invalidate();
+end;
+</file>
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