Cuboid Rotation on a Plane - Game (UPBGE 0.3)

Game Engine Works in Progress and Game Demos
1

Hi,
here I post some game related stuff based on rotation mechanism from here:

new:

  • Movement is forbidden when place is occupied (Collision detection raycast)
  • simple fall into abyss when there is no ground below the origin (raycast)
    this is cool for the borders but not for gaps , think think
  • Respawn when fallen off

UPBGE_0.3_Rotate2.blend (1003.6 KB)

2 Likes
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Continously movement when pressed button instead of single presses.
Goal field that only activates when the Orientation is right.

It checks the orientation of all 3 axis and the object distance for a certain amount of precision (always account for rounding errors):

vecx=Vector([1,0,0])
vecy=Vector([0,1,0])
vecz=Vector([0,0,1])
veclist=[vecx,vecy,vecz] 
own.color=(0,1,0,1)
for vec in veclist:    
    if abs(own.getAxisVect(vec).dot(Cube.getAxisVect(vec)))<0.9 or (Cube.worldPosition-own.worldPosition).length>0.1:
        own.color=(0,0,1,1)

I’m always open for better ideas :slight_smile:
UPBGE_0.3_Rotate3.blend (1.0 MB)

1 Like
3

Just posted, already changed:

  • Orientation based size morphing
  • Goal checks size instead of orientation:
own.color=(0,1,0,1)

scale=Cube.worldOrientation @ Cube.worldScale
for i in range(3):
    if abs(abs(scale[i])-own.worldScale[i])>0.1 or (Cube.worldPosition-own.worldPosition).length>0.1:
        own.color=(0,0,1,1)

UPBGE_0.3_Rotate4.blend (1.1 MB)

1 Like
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new:

  • Collision tests for ground and no ground
  • moving platform
  • conveyor
  • respawner
  • goal and teleport to spawn

UPBGE_0.3_Rotate7.blend (1.2 MB)

1 Like
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  • Gamepad support
  • View can be rotated
  • controls according to view
  • bge/UPBGE 0.2.5 compatibility: all bpy.dimensions replaced with simple obj.scale
  • rotated whole scene for easier xyz Orientation.
Controls:
    WASD or Gamepad Left Stick
    
Rotate View:
    Left/Right Arrow Keys  or Gamepad Right Stick 
    
Red boxes: change size
Blue boxes: Goal

Gaps can be overcome with matching size

Joystick can be set at Cube property 'Joystick'

UPBGE_0.3_Rotate9.blend (1.2 MB)

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simple Joystick selection menu: press J
Left Mouse Button to toggle through

UPBGE_0.3_Rotate10.blend (1.2 MB)

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I really have to begin making a little game with perhaps 3 mini levels now.

But before here’s a little update:
The drifting on the moving platform that you see in above video comes from my system to addthe linear velocity of the platform to the cube.
That has some delay.

Usually there are 2 ways to get no drifting:

  1. Parenting an object to a moving object. (not possible with my rotation system)
  2. Copying and setting the Position as a predraw function (works for UPBGE 0.36+ but UPBGE 0.3 still lags. AndWould be little bit more complicated code anyway)

My workaround is this:
The actual platform is slow-parented to the invisible moving dummy object.
The velocity is taken from the parent and with the correct slow-parent value everything looks quite synced.
The slowness-factor of slow-parent in UPBGE 0.36+ is different from 0.3 so for compatibilty it is set with:
if bge.app.version>(3, 0, 0): own.timeOffset=5

UPBGE_0.3_Rotate11.blend (1.4 MB)

1 Like
8

Top notch work!

1 Like
9

I love this style of game! Hope to see more of it!

1 Like
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Here is the game with 5 mini-levels.
They are very small and quite easy to reduce frustration :slight_smile:

New:

  • moving ‘enemy’-objects
  • Sound relative to Player Position

Expandable:
New Levels can easily be created just by duplicating the Spawner and Goal objects.

I would love to see some creations!

Welcome

Move the Cube through the maze to the Blue Goal Box.
You size and orientation must match.

Blue boxes: Goal
Red boxes: morph to another size
Do not touch metall

Gaps can be overcome when big enough

Controls:
    WASD or Gamepad Left Stick or Hat or Buttons
    
Rotate View:
    Left/Right Arrow Keys  or Gamepad Right Stick 

Joystick Selection Menu:
    Show/hide: J 
    Toggle through: Left Mouse Click
      
Restart Game:
    Enter Key

    
Expandable:
    To make more Levels just duplicate 2 objects:
    Spawner and Goal
        
    To start the game in any Level set the Property 'Level' of object 'goal_control'
2 Likes
11

this same game with some FX / post processing could be amazing.

maybe some obstacles that use lightning zappers / plasma walls etc ?

I was able to make ‘bloom’ in a fragment shader - this means it limits it to that object / not the whole scene

(simply offset uv cords and take another sample in each direction, 1 pixel width)
pixel width = 1/ image_width
pixel height = 1/image_height

1 Like
12

Finally I found a workaround for a bug in UPBGE 0.36.1 !!! (Above Game updated)

In this game the morph fields and enemies are cubes that are scaled down to 0.99 so you won’t collide with them when you’re sitting next to them.

I had the problem that in 0.36.1 I couldn’t get out of the reach of a morph field once I stepped in.

**0.36.1 Collision Sensor doesn’t turn off at the same distance it turned on with “Box”-Collision Bounds (like 0.3 does) **
(And no, this has nothing to do with setting collision margins and can’t be fixed this way.
And yes, I need to use Physics-Type “Box” because I’m scaling)

Don’t know if this is intentional or a bug or if 0.4 will behave the same.

Here is a test file with 2 colliding Boxes with Physics-Type “Box”.
The left can be moved apart in finest increments with tapping “A” and “S”:
In UPBGE 0.3 You press 1 x A and the Collision ends. And 1 x S and Collision starts.
In UPBGE 0.36.1 You press 34 x A and the Collision ends. And then 34 x S and Collision starts. There is an overlapping.
UPBGE_Collision.blend (819.2 KB)

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Top notch :v::+1:

1 Like
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Tutorial: How to add a new Level
(Game has now 6 Levels :slight_smile: )

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Tutorial: The Moving Platform

  • The setup
  • 2 Systems in one: Use Keyframe Animation or Property “y”