2.7 KiB
2.7 KiB
Section 04 - Lesson 03 | Physics 2D Nodes
Notes
overview
assets
- sprite sheet plane, 3 figures
- pipe and laser site
- some backgrounds for parallax effect
scenes
- main game scene
- plane sceen
- pipes scene (2 pipes)
- laser scene
approach
- make the basic game scene
- make a plance scene
- code plane movement
- build the pipe / laser / pipes scene
- setup the scrolling logic
- setup collishions and plane death
- create the main screen and setup navigation
- add game over
- add scoring with high score saving
- parallax background
plane scene
- falls with gravity
- press a key to jump or fly
- collides with laser, pipes, floor, ceiling
- animated propellor
physics
overview
- gravity
- collisions
- movement
- forces
-
impulse
- get hit by a rocket
physics 2D nodes
| node type | definition |
|---|---|
| StaticBody2D | Physics body for 2D physics which is static or moves only by script. Useful for floor and walls. |
| CharacterBody2D | Specialized 2D physics body node for characters moved by script |
| AnimatableBody2D | Physics body for 2D physics which moves only by script or animation. Useful for moving platforms and doors |
| RigidBody2D | Physics body which is moved by 2D physics simulation. Useful for objects that have gravity and can be pushed by other objects. |
StaticBody2D
- wall, rock, ceiling floor, platform in the middle of the level
- designed not to move
- things will bounce or stick to it depending on what your physics is
CharacterBody2D
- think platform character
- set the velocities
AnimatableBody2D
- inherits from StaticBody2D
- getting a StaticBody and a Character to move together is a pain and buggy
RigidBody2D
- tennis ball
- rocket fired
how they interact
- interact with other Physics2D nodes
- we DO NOT control the position, the physics engine does
- we supply velocity / force
- physics engine calculates where we go and what our speed / position is