Simplicity... love it. Okay, I hit just this snag at one time and here's how I got around the problem (this assumes you're using Blitz 3D).
1) Create a pivot which is the PARENT of the object you are applying gravity to.
2) Then in each loop:
3) De-parent the object.
4) Point the pivot at the target sphere./
5) Re-parent the object.
6) Move the pivot by gravity speed.
Heres some code in action:
1) Create a pivot which is the PARENT of the object you are applying gravity to.
2) Then in each loop:
3) De-parent the object.
4) Point the pivot at the target sphere./
5) Re-parent the object.
6) Move the pivot by gravity speed.
Heres some code in action:
Open in online IDEGraphics3D 640, 480 SetBuffer BackBuffer() Global pivot = CreatePivot() Global cube = CreateCube(pivot) Global world = CreateSphere(16) Global cam = CreateCamera() Global gravity# = 0.01 Repeat EntityParent pivot, 0 If KeyDown(200) MoveEntity cube, 0, 0, .01 If KeyDown(208) MoveEntity cube, 0, 0, -0.01 ; The following simulates thrusters for moving away from the surface ; NOTE: this is an example. Fiddling with gravity is not recommended :) If KeyDown(57) gravity# = -0.01 Else gravity# = 0.01 EndIf ; Position the entity at our cubes exact position PositionEntity pivot, EntityX#(cube,1), EntityY#(cube,1), EntityZ#(cube,1) ; Point the pivot at the planet PointEntity pivot, world ; Re-parent the cube Entityparent cube, pivot ; Move the objects MoveEntity pivot, 0, 0, gravity# Until Keyhit(1)This is similar to Shamblers suggestion, but it allows you to retain the current rotation of your object.