Game Assets:
Game Assets:
All of the assets required can be downloaded here.
All of the assets required can be downloaded here.
The sprites are in the Traps --> Spiked Ball
The sprites are in the Traps --> Spiked Ball
Folder.
Folder.
Embedded Files
Add the Spiked Ball folder to the FileSystem
Add the Spiked Ball folder to the FileSystem
Level Design:
Level Design:
Create any level you like.
Create any level you like.
You may copy my level layout.
You may copy my level layout.
We will place some Strawberries strategically
We will place some Strawberries strategically
Also, we will create a scene for a Spiked Ball
Also, we will create a scene for a Spiked Ball
You don't have it yet
You don't have it yet
Create a new scene with a Node2D as root
Create a new scene with a Node2D as root
Rename it to SpikedBall
Rename it to SpikedBall
Add a Sprite2D as a child
Add a Sprite2D as a child
Rename it to Chain
Rename it to Chain
Use the Chain.png as the texture
Use the Chain.png as the texture
Duplicate the Chain 5 times
Duplicate the Chain 5 times
Everything is overlapping - that is fine because we will reposition everything dynamically
Everything is overlapping - that is fine because we will reposition everything dynamically
Add an AnimatableBody2D as a child of SpikedBall
Add an AnimatableBody2D as a child of SpikedBall
rename it to Ball
rename it to Ball
add a new Sprite2D as child of Ball
add a new Sprite2D as child of Ball
use Spiked Ball.png as the texture
use Spiked Ball.png as the texture
add a CollisionShape2D as a child of Ball
add a CollisionShape2D as a child of Ball
use a New CircleShape2D
use a New CircleShape2D
place it around the ball
place it around the ball
Add an Area2D as a child of Ball
Add an Area2D as a child of Ball
Add a CollisionShape2D as child of Area2D
Add a CollisionShape2D as child of Area2D
Use a New CircleShape2D
Use a New CircleShape2D
Place it around the ball
Place it around the ball
Attach a New Script to the SpikedBall root node
Attach a New Script to the SpikedBall root node
The ball can either swing or rotate
The ball can either swing or rotate
create an enum called Mode with values
create an enum called Mode with values
ROTATE and SWING
ROTATE and SWING
Create export variables to set
Create export variables to set
the mode (default is SWING)
the mode (default is SWING)
the spacing between chains
the spacing between chains
the swing amplitude
the swing amplitude
the swing speed
the swing speed
Create variables to track
Create variables to track
the current angle
the current angle
the current time
the current time
the center point (pivot)
the center point (pivot)
In the ready function
In the ready function
set the center point
set the center point
to the starting position (0, 0)
to the starting position (0, 0)
In the process function
In the process function
set the current time
set the current time
determine the mode
determine the mode
if in swing mode
if in swing mode
set the angle with a sine wave
set the angle with a sine wave
for back and forth motion
for back and forth motion
if in rotate mode
if in rotate mode
repeatedly change the angle over time
repeatedly change the angle over time
Still in the process function
Still in the process function
we must update the position of
we must update the position of
each chain as well as the ball
each chain as well as the ball
so we repeat the same actions
so we repeat the same actions
for every child node in the scene
for every child node in the scene
place each link in the chain 20 pixels apart
place each link in the chain 20 pixels apart
on both the x and y
on both the x and y
update the global position to
update the global position to
the value of center plus the offset
the value of center plus the offset
move to the next child node and repeat
move to the next child node and repeat
Finally Connect the body entered signal
Finally Connect the body entered signal
of the Area2D
of the Area2D
Code the body entered function
Code the body entered function
so that if the body is the player
so that if the body is the player
you call the hurt function of the player
you call the hurt function of the player
In the SpikedBall Level Scene
In the SpikedBall Level Scene
You can add static Chain Sprites
You can add static Chain Sprites
to Represent the pivots
to Represent the pivots
Page updated
Google Sites
Report abuse