examples/physics/pendulum/example.md

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tags: physics title: Pendulum physics brief: This example shows a simple setup with a static pivot and two dynamic weights - physics objects joined together with a joint of type "fixed" and "spring". The fixed joint can simulate a rope and spring joint a spring. The example shows how to create the joints and change the gravity to affect the pendulums. author: Pawel Jarosz

scripts: pendulum.script

The setup consists of four game objects. The game.project physics GravityY property is set to -500 to match the scale of the setup.

pivot : The square stone block. Contains:

• A Sprite component with the stone block image.
• A Collision object component. The Type is set to STATIC. A box Shape matching the sprite image is added to the components.
• A script that joines the weights game objects to to the pivot and reacts to user input by changing the direction of the physics gravity.
• A label with an instruction to the user.

weight_fixed : The cirular metal weight. Contains:

• A Sprite component with the metal circle image.
• A Collision object component. Also has Type set to DYNAMIC. A box Shape matching the sprite image is added to the component.

weight_spring : The same as above.

walls : The outer walls. Contains:

• A Collision object component. The Type is set to STATIC. 4 box Shapes are added to the component. These are placed just outside of the game view.