Godot Version
4.4.1 stable
Question
I am trying to make a simple top-down soccer game. There are 2 players that each have to collide with a ball in order to push it towards each others' goal. Only problem is, I can't figure out why the ball does not move on player collision
Ball
[gd_scene load_steps=4 format=3 uid="uid://bip5ohmubkmc1"]
[ext_resource type="Texture2D" uid="uid://dif230vc4oqo8" path="res://assets/ball_soccer2.png" id="1_d73vv"]
[sub_resource type="GDScript" id="GDScript_ja1hk"]
script/source = "# Ball.gd
extends CharacterBody2D
@export var reset_position := Vector2(0, 0)
@export var max_speed := 1500.0
@export var acceleration := 800.0
@export var friction := 0.97
@export var bounce_factor := 0.8
var current_velocity := Vector2.ZERO
func _ready():
var players = get_tree().get_nodes_in_group(\"players\")
for player in players:
player.ball_hit.connect(on_player_hit)
reset_ball()
func _physics_process(delta):
# Apply friction
current_velocity *= friction
# Limit maximum speed
if current_velocity.length() > max_speed:
current_velocity = current_velocity.normalized() * max_speed
# Move and handle collisions
velocity = current_velocity
move_and_slide()
# Handle collisions after movement
handle_collisions()
func handle_collisions():
for i in get_slide_collision_count():
var collision = get_slide_collision(i)
var collider = collision.get_collider()
# Bounce off walls/players
if collider.is_in_group(\"players\") || collider.is_in_group(\"walls\"):
var normal = collision.get_normal()
current_velocity = current_velocity.bounce(normal) * bounce_factor
# Goal detection
if collider.is_in_group(\"goals\"):
handle_goal(collider)
func apply_force(direction: Vector2, strength: float):
current_velocity += direction.normalized() * strength * acceleration
func handle_goal(goal: Area2D):
match goal.name:
\"P1Goal\":
GameManager.player_scored(2)
\"P2Goal\":
GameManager.player_scored(1)
reset_ball()
func reset_ball():
current_velocity = Vector2.ZERO
position = reset_position
# This gets connected with the 'ball_hit' signal from the player in the game manager
func on_player_hit(direction: Vector2, strength: float):
apply_force(direction, strength)
"
[sub_resource type="CircleShape2D" id="CircleShape2D_ul5l2"]
radius = 17.0
[node name="Ball" type="CharacterBody2D" groups=["ball"]]
collision_layer = 2
collision_mask = 5
script = SubResource("GDScript_ja1hk")
[node name="Sprite2D" type="Sprite2D" parent="." groups=["ball"]]
texture = ExtResource("1_d73vv")
[node name="CollisionShape2D" type="CollisionShape2D" parent="." groups=["ball"]]
z_index = 10
shape = SubResource("CircleShape2D_ul5l2")
Player
[gd_scene load_steps=13 format=3 uid="uid://vfxv1sarskgj"]
[ext_resource type="Texture2D" uid="uid://ohl6p5mcivb0" path="res://assets/slime/ready/ready_1.png" id="1_d3wef"]
[ext_resource type="Texture2D" uid="uid://b4an77mmahrvk" path="res://assets/slime/ready/ready_2.png" id="2_o4126"]
[ext_resource type="Texture2D" uid="uid://covplq5jyeuwt" path="res://assets/slime/ready/ready_3.png" id="3_lkdrv"]
[ext_resource type="Texture2D" uid="uid://cw426sdjweyqs" path="res://assets/slime/ready/ready_4.png" id="4_p7iby"]
[ext_resource type="Texture2D" uid="uid://drg08oui5s4yo" path="res://assets/stamina_circle.png" id="5_qu4a1"]
[ext_resource type="Texture2D" uid="uid://47am5ot0o637" path="res://assets/dash_indicator.png" id="6_70d11"]
[ext_resource type="Material" uid="uid://p13hmqjvp4mn" path="res://assets/dash_glare.tres" id="6_cw2d6"]
[ext_resource type="Texture2D" uid="uid://sjf50xgl3mdp" path="res://assets/dash_particle.png" id="8_khinc"]
[sub_resource type="GDScript" id="GDScript_e80uo"]
script/source = "# Player.gd
extends CharacterBody2D
signal ball_hit(direction: Vector2, strength: float)
@export var player_id := 1
# Movement Settings
@export var base_speed := 400.0
@export var sprint_speed := 600.0
@export var dash_speed := 1500.0
@export var acceleration := 3000.0
@export var friction := 2000.0
@export var dash_duration := 0.2
@export var dash_cooldown := 2.0
@export var stamina_regen_rate := 40.0
@export var stamina_drain_rate := 60.0
@export var flip_h : bool = false
@export var color_pallete : CompressedTexture2D = null
# Nodes
@onready var dash_cooldown_timer := %DashCooldownTimer
@onready var dash_duration_timer := %DashDurationTimer
@onready var dash_indicator := %DashIndicator
@onready var stamina_bar := %StaminaBar
@onready var sprite := %AnimatedSprite2D
@onready var dash_particles:= %DashParticles
# State
var current_speed := base_speed
var is_sprinting := false
var can_dash := true
var is_dashing := false
var dash_direction := Vector2.ZERO
var stamina := 100.0
var last_move_direction := 1 # 1 right, -1 left
func _ready():
# Configure GPUParticles2D node
dash_particles.lifetime = dash_duration # Match dash duration
dash_particles.amount = 35
dash_particles.preprocess = 0.5
dash_particles.speed_scale = 1.0
last_move_direction = -1 if flip_h else 1
sprite.flip_h = flip_h
# Create and configure material
var pm = ParticleProcessMaterial.new()
pm.direction = Vector3(1, 0, 0)
pm.spread = 25
pm.initial_velocity_min = 380.0
pm.initial_velocity_max = 420.0
pm.linear_accel_min = -200.0
pm.linear_accel_max = -200.0
pm.scale_min = 0.3
pm.scale_max = 0.5
pm.color_ramp = create_particle_gradient()
dash_particles.process_material = pm
dash_particles.emitting = false
# Initialize timers
dash_cooldown_timer.timeout.connect(_on_dash_cooldown_timer_timeout)
dash_duration_timer.timeout.connect(_on_dash_duration_timeout)
dash_cooldown_timer.wait_time = dash_cooldown
dash_duration_timer.wait_time = dash_duration
# Initial values
stamina = 100.0
can_dash = true
update_ui()
dash_indicator.value = 100.0
stamina_bar.value = 100.0
if color_pallete:
var pallete = PaletteMaterial.new()
pallete.set_palette(color_pallete)
sprite.material = pallete
func _physics_process(delta):
handle_input(delta)
handle_movement(delta)
handle_stamina(delta)
update_ui()
move_and_slide()
update_animations()
update_particles()
func handle_input(delta):
var input_vector = get_input_vector()
if is_dashing:
input_vector = dash_direction
is_sprinting = Input.is_action_pressed(\"p%d_sprint\" % player_id) && stamina > 0
current_speed = sprint_speed if is_sprinting else base_speed
if Input.is_action_just_pressed(\"p%d_dash\" % player_id) && can_dash:
start_dash()
if !is_dashing:
velocity = velocity.move_toward(input_vector * current_speed, acceleration * delta)
func start_dash():
dash_direction = get_effective_direction()
dash_particles.rotation = dash_direction.angle() + PI
dash_particles.emitting = true
dash_particles.restart()
can_dash = false
is_dashing = true
velocity = dash_direction * dash_speed
current_speed = dash_speed
dash_duration_timer.start()
dash_cooldown_timer.start()
dash_indicator.material.set_shader_parameter(\"active\", false)
func get_effective_direction() -> Vector2:
if velocity.length() > 10:
return velocity.normalized()
var input_dir = get_input_vector().normalized()
return input_dir if input_dir != Vector2.ZERO else Vector2.RIGHT
func update_particles():
if is_dashing:
# Update rotation based on current velocity
var current_dir = velocity.normalized()
dash_particles.rotation = current_dir.angle() + PI
elif dash_particles.emitting:
dash_particles.emitting = false
func handle_movement(delta):
if velocity.length() < 10:
velocity = velocity.move_toward(Vector2.ZERO, friction * delta)
func handle_stamina(delta):
if is_sprinting:
stamina = max(stamina - stamina_drain_rate * delta, 0)
if stamina <= 0:
is_sprinting = false
else:
stamina = min(stamina + stamina_regen_rate * delta, 100)
func update_ui():
dash_indicator.value = 100.0 if can_dash else 100 - (dash_cooldown_timer.time_left / dash_cooldown) * 100
stamina_bar.value = stamina
dash_indicator.material.set_shader_parameter(\"active\", can_dash)
func update_animations():
if velocity.length() > 10:
# Only update direction when moving horizontally
if abs(velocity.x) > 0:
var new_direction = sign(velocity.x)
if new_direction != last_move_direction:
last_move_direction = new_direction
sprite.flip_h = new_direction < 0
sprite.play(\"sprint\" if is_sprinting else \"run\")
else:
# Maintain last direction when idle
sprite.flip_h = last_move_direction < 0
sprite.play(\"idle\")
func _on_dash_duration_timeout():
is_dashing = false
current_speed = base_speed
velocity = velocity.normalized() * base_speed
dash_particles.emitting = false
func _on_dash_cooldown_timer_timeout():
can_dash = true
dash_indicator.value = 100.0
func _on_body_entered(body):
if body.name == \"Ball\":
var direction = (body.position - position).normalized()
var strength = velocity.length()
emit_signal(\"ball_hit\", direction, strength)
func get_input_vector() -> Vector2:
return Vector2(
Input.get_action_strength(\"p%d_right\" % player_id) -
Input.get_action_strength(\"p%d_left\" % player_id),
Input.get_action_strength(\"p%d_down\" % player_id) -
Input.get_action_strength(\"p%d_up\" % player_id)
).normalized()
func create_particle_gradient() -> Gradient:
var gradient = Gradient.new()
gradient.add_point(0.0, Color(1, 1, 1, 1))
gradient.add_point(0.3, Color(1, 0.8, 0.2, 0.8))
gradient.add_point(0.6, Color(1, 0.4, 0.1, 0.4))
gradient.add_point(1.0, Color(1, 0, 0, 0))
return gradient
"
[sub_resource type="CircleShape2D" id="CircleShape2D_70d11"]
radius = 10.5
[sub_resource type="SpriteFrames" id="SpriteFrames_wi0c6"]
animations = [{
"frames": [{
"duration": 1.0,
"texture": ExtResource("1_d3wef")
}, {
"duration": 1.0,
"texture": ExtResource("2_o4126")
}, {
"duration": 1.0,
"texture": ExtResource("3_lkdrv")
}, {
"duration": 1.0,
"texture": ExtResource("4_p7iby")
}],
"loop": true,
"name": &"dashing",
"speed": 5.0
}, {
"frames": [{
"duration": 1.0,
"texture": ExtResource("1_d3wef")
}, {
"duration": 1.0,
"texture": ExtResource("2_o4126")
}, {
"duration": 1.0,
"texture": ExtResource("3_lkdrv")
}, {
"duration": 1.0,
"texture": ExtResource("4_p7iby")
}],
"loop": true,
"name": &"idle",
"speed": 5.0
}, {
"frames": [{
"duration": 1.0,
"texture": ExtResource("1_d3wef")
}, {
"duration": 1.0,
"texture": ExtResource("2_o4126")
}, {
"duration": 1.0,
"texture": ExtResource("3_lkdrv")
}, {
"duration": 1.0,
"texture": ExtResource("4_p7iby")
}],
"loop": true,
"name": &"run",
"speed": 5.0
}, {
"frames": [{
"duration": 1.0,
"texture": ExtResource("1_d3wef")
}, {
"duration": 1.0,
"texture": ExtResource("2_o4126")
}, {
"duration": 1.0,
"texture": ExtResource("3_lkdrv")
}, {
"duration": 1.0,
"texture": ExtResource("4_p7iby")
}],
"loop": false,
"name": &"sprint",
"speed": 5.0
}]
[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_bruh7"]
particle_flag_disable_z = true
angle_min = 1.07288e-05
angle_max = 180.0
initial_velocity_min = 300.0
initial_velocity_max = 500.0
gravity = Vector3(0, 0, 0)
linear_accel_min = -200.0
linear_accel_max = -100.0
damping_min = 150.0
damping_max = 150.0
scale_min = 0.1
scale_max = 0.5
[node name="CharacterBody2D" type="CharacterBody2D" groups=["players"]]
scale = Vector2(2.21815, 2.21815)
collision_mask = 7
platform_wall_layers = 4
script = SubResource("GDScript_e80uo")
flip_h = true
[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
z_index = 10
position = Vector2(0.5, 0)
shape = SubResource("CircleShape2D_70d11")
metadata/_edit_group_ = true
[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="."]
unique_name_in_owner = true
sprite_frames = SubResource("SpriteFrames_wi0c6")
animation = &"sprint"
metadata/_edit_group_ = true
[node name="CenterContainer" type="CenterContainer" parent="."]
anchors_preset = 8
anchor_left = 0.5
anchor_top = 0.5
anchor_right = 0.5
anchor_bottom = 0.5
offset_left = 5.0
offset_top = -10.0
offset_right = 38.0
offset_bottom = 23.0
grow_horizontal = 2
grow_vertical = 2
scale = Vector2(0.151053, 0.151053)
size_flags_horizontal = 4
size_flags_vertical = 4
[node name="StaminaBar" type="TextureProgressBar" parent="CenterContainer"]
unique_name_in_owner = true
layout_mode = 2
fill_mode = 5
texture_under = ExtResource("5_qu4a1")
texture_progress = ExtResource("5_qu4a1")
tint_under = Color(0.361575, 0.361575, 0.361575, 1)
tint_progress = Color(0.054902, 0.803922, 0, 1)
metadata/_edit_group_ = true
[node name="DashIndicator" type="TextureProgressBar" parent="CenterContainer"]
unique_name_in_owner = true
material = ExtResource("6_cw2d6")
layout_mode = 2
fill_mode = 3
texture_progress = ExtResource("6_70d11")
tint_under = Color(1, 1, 1, 0)
tint_over = Color(1, 1, 1, 0)
metadata/_edit_group_ = true
[node name="DashDurationTimer" type="Timer" parent="."]
unique_name_in_owner = true
[node name="DashCooldownTimer" type="Timer" parent="."]
unique_name_in_owner = true
[node name="DashParticles" type="GPUParticles2D" parent="."]
unique_name_in_owner = true
amount = 30
texture = ExtResource("8_khinc")
lifetime = 0.3
process_material = SubResource("ParticleProcessMaterial_bruh7")
