Add special abilities, commented out by default

assets/sounds/244654__dsg__pop-2.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://dmx2rtf2vy1"
+path="res://.godot/imported/244654__dsg__pop-2.ogg-27b8aa37b813c338a8b122e748e26d18.oggvorbisstr"
+
+[deps]
+
+source_file="res://assets/sounds/244654__dsg__pop-2.ogg"
+dest_files=["res://.godot/imported/244654__dsg__pop-2.ogg-27b8aa37b813c338a8b122e748e26d18.oggvorbisstr"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4

assets/sounds/596541__tothrec2__large-wings-flapping-foley.ogg.import

@@ -0,0 +1,19 @@
+[remap]
+
+importer="oggvorbisstr"
+type="AudioStreamOggVorbis"
+uid="uid://p0b3e0t7h8j3"
+path="res://.godot/imported/596541__tothrec2__large-wings-flapping-foley.ogg-715998e9d4f908348de867f3ceb6fce5.oggvorbisstr"
+
+[deps]
+
+source_file="res://assets/sounds/596541__tothrec2__large-wings-flapping-foley.ogg"
+dest_files=["res://.godot/imported/596541__tothrec2__large-wings-flapping-foley.ogg-715998e9d4f908348de867f3ceb6fce5.oggvorbisstr"]
+
+[params]
+
+loop=false
+loop_offset=0
+bpm=0
+beat_count=0
+bar_beats=4

components/player/player.tscn

@@ -1,8 +1,10 @@
-[gd_scene load_steps=8 format=3 uid="uid://8st4scqt06l8"]
+[gd_scene load_steps=9 format=3 uid="uid://8st4scqt06l8"]
 
 [ext_resource type="Script" uid="uid://umb21eb2y1oj" path="res://scripts/player.gd" id="1_w3ms2"]
 [ext_resource type="SpriteFrames" uid="uid://bo581k1esb50n" path="res://components/player/spriteframes-red.tres" id="2_msaml"]
+[ext_resource type="AudioStream" uid="uid://dmx2rtf2vy1" path="res://assets/sounds/244654__dsg__pop-2.ogg" id="3_ph1f6"]
 [ext_resource type="AudioStream" uid="uid://bx1joarpc14j5" path="res://assets/sounds/538066__stevielematt__boing.ogg" id="3_wa6cj"]
+[ext_resource type="AudioStream" uid="uid://p0b3e0t7h8j3" path="res://assets/sounds/596541__tothrec2__large-wings-flapping-foley.ogg" id="4_mpawu"]
 
 [sub_resource type="CapsuleShape2D" id="CapsuleShape2D_7x5a4"]
 radius = 31.0
@@ -13,6 +15,11 @@ random_pitch = 1.1
 streams_count = 1
 stream_0/stream = ExtResource("3_wa6cj")
 
+[sub_resource type="AudioStreamRandomizer" id="AudioStreamRandomizer_ph1f6"]
+random_pitch = 1.2
+streams_count = 1
+stream_0/stream = ExtResource("3_ph1f6")
+
 [node name="Player" type="CharacterBody2D" groups=["players"]]
 collision_layer = 3
 collision_mask = 5
@@ -51,3 +58,12 @@ one_way_collision = true
 [node name="JumpSFX" type="AudioStreamPlayer" parent="SoundEffects"]
 unique_name_in_owner = true
 stream = SubResource("AudioStreamRandomizer_mpawu")
+
+[node name="GlideSFX" type="AudioStreamPlayer" parent="SoundEffects"]
+unique_name_in_owner = true
+stream = ExtResource("4_mpawu")
+
+[node name="TeleportSFX" type="AudioStreamPlayer" parent="SoundEffects"]
+unique_name_in_owner = true
+stream = SubResource("AudioStreamRandomizer_ph1f6")
+volume_db = -10.0

project.godot

@@ -59,6 +59,26 @@ player_2_right={
 , Object(InputEventJoypadMotion,"resource_local_to_scene":false,"resource_name":"","device":1,"axis":0,"axis_value":1.0,"script":null)
 ]
 }
+player_2_teleport={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194325,"key_label":0,"unicode":0,"location":1,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":1,"button_index":1,"pressure":0.0,"pressed":true,"script":null)
+]
+}
+player_2_phase={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194306,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":1,"button_index":2,"pressure":0.0,"pressed":true,"script":null)
+]
+}
+player_2_shrink={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":83,"key_label":0,"unicode":111,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":83,"physical_keycode":0,"key_label":0,"unicode":115,"location":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":1,"button_index":12,"pressure":0.0,"pressed":true,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":1,"button_index":7,"pressure":0.0,"pressed":true,"script":null)
+]
+}
 player_1_jump={
 "deadzone": 0.5,
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":4194320,"physical_keycode":0,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
@@ -80,6 +100,25 @@ player_1_right={
 , Object(InputEventJoypadMotion,"resource_local_to_scene":false,"resource_name":"","device":0,"axis":0,"axis_value":1.0,"script":null)
 ]
 }
+player_1_teleport={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194309,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":0,"button_index":1,"pressure":0.0,"pressed":true,"script":null)
+]
+}
+player_1_phase={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194308,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":0,"button_index":2,"pressure":0.0,"pressed":true,"script":null)
+]
+}
+player_1_shrink={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":0,"button_index":12,"pressure":0.0,"pressed":true,"script":null)
+, Object(InputEventJoypadButton,"resource_local_to_scene":false,"resource_name":"","device":0,"button_index":7,"pressure":0.0,"pressed":true,"script":null)
+]
+}
 
 [layer_names]
 

scripts/actions.gd

@@ -12,6 +12,9 @@ const ACTIONS = [
 	&"jump",
 	&"left",
 	&"right",
+	&"teleport",
+	&"phase",
+	&"shrink",
 ]
 
 # Dictionary[Global.Player, Dictionary[StringName, StringName]]

scripts/player.gd

@@ -3,6 +3,25 @@ class_name Player
 extends CharacterBody2D
 ## A player's character, which can walk, jump, and stomp on enemies.
 
+## The player-character's maximum downwards speed while gliding.
+## Making this number smaller allows the player to glide further.
+## [br][br]
+## Used by [method _glide].
+const GLIDE_TERMINAL_VELOCITY = 100
+
+## How many pixels the player-character should teleport horizontally when the
+## teleport special ability is used.
+## [br][br]
+## Used by [method _teleport].
+const TELEPORT_DISTANCE = 512
+
+## How much to scale [member jump_velocity] when the player-character is shrunk. Setting this close
+## to or below [code]0[/code] prevents jumping; setting this to [code]1[/code] or greater causes
+## jumps while shrunk to be the same as normal size.
+## [br][br]
+## Used by [method _shrink].
+const JUMP_VELOCITY_SCALE_WHEN_SMALL = 0.85
+
 ## Which player controls this character?
 @export var player: Global.Player = Global.Player.ONE
 
@@ -52,11 +71,16 @@ var double_jump_armed: bool = false
 var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
 var original_position: Vector2
 
+# Whether the player-character is currently shrunk. See _shrink().
+var _is_shrunk := false
+
 @onready var _sprite: AnimatedSprite2D = %AnimatedSprite2D
 @onready var _initial_sprite_frames: SpriteFrames = %AnimatedSprite2D.sprite_frames
 @onready var _double_jump_particles: CPUParticles2D = %DoubleJumpParticles
 
 @onready var _jump_sfx: AudioStreamPlayer = %JumpSFX
+@onready var _glide_sfx: AudioStreamPlayer = %GlideSFX
+@onready var _teleport_sfx: AudioStreamPlayer = %TeleportSFX
 
 
 func _set_sprite_frames(new_sprite_frames):
@@ -106,11 +130,87 @@ func stomp():
 	_jump()
 
 
+## If the player-character is in the air, and the "jump" action is held, clamp the downwards
+## velocity to a constant. Must be called after applying gravity to the player-character.
+func _glide() -> void:
+	if not is_on_floor() and Input.is_action_pressed(Actions.lookup(player, "jump")):
+		if velocity.y > GLIDE_TERMINAL_VELOCITY:
+			velocity.y = GLIDE_TERMINAL_VELOCITY
+
+		# Only play the sound effect when the player-character is moving downwards, not while
+		# jumping upwards
+		if velocity.y > 0 and not _glide_sfx.playing:
+			_glide_sfx.play()
+	elif _glide_sfx.playing:
+		_glide_sfx.stop()
+
+
+## If the "teleport" action is pressed, and the player is moving the character horizontally,
+## teleport the character in that horizontal direction.
+func _teleport(input_direction: float) -> void:
+	if (
+		Input.is_action_just_pressed(Actions.lookup(player, "teleport"))
+		and not is_zero_approx(input_direction)
+	):
+		# TODO: Check if we are teleporting into a wall (in which case the player should lose a
+		# life) or an enemy (in which case maybe the enemy should be telefragged/defeated?)
+		global_position.x += TELEPORT_DISTANCE * input_direction
+		_teleport_sfx.play()
+
+
+## If the "phase" action is pressed, make the player-character invulnerable, but also unable to
+## interact with coins.
+func _phase() -> void:
+	# Check if the player is holding the "phase" action button.
+	if Input.is_action_just_pressed(Actions.lookup(player, "phase")):
+		# While phasing, disable collisions on the PLAYER physics layer.
+		set_collision_layer_value(Global.PhysicsLayers.PLAYER, false)
+		set_collision_mask_value(Global.PhysicsLayers.PLAYER, false)
+
+		# Make the sprite semitransparent
+		_sprite.modulate.a = 0.5
+
+		# TODO: Is this ability too powerful? Should it have a timer/stamina so the player can only
+		# use it occasionally and for a short time?
+	elif Input.is_action_just_released(Actions.lookup(player, "phase")):
+		# Re-enable collisions on the PLAYER physics layer.
+		set_collision_layer_value(Global.PhysicsLayers.PLAYER, true)
+		set_collision_mask_value(Global.PhysicsLayers.PLAYER, true)
+
+		# Make the sprite opaque again
+		_sprite.modulate.a = 1
+
+
+## When the "shrink" action is pressed, toggle the player between normal size and half-size. While
+## shrunk, the player can pass through narrower passages, but cannot jump so high.
+func _shrink() -> void:
+	if Input.is_action_just_pressed(Actions.lookup(player, "shrink")):
+		_is_shrunk = not _is_shrunk
+
+		if _is_shrunk:
+			# Shrink the player-character's sprite and collision shape
+			scale = Vector2(0.5, 0.5)
+		else:
+			scale = Vector2(1, 1)
+
+	if _is_shrunk:
+		# Reduce the jump height while shrunk. _jump() sets velocity.y to -jump_velocity, so
+		# clamping this to a smaller value cuts the initial upwards velocity, and hence the jump
+		# height.
+		if velocity.y < -jump_velocity * JUMP_VELOCITY_SCALE_WHEN_SMALL:
+			velocity.y = -jump_velocity * JUMP_VELOCITY_SCALE_WHEN_SMALL
+
+	# TODO: should there be other consequences to being small? Could we make the player somehow more
+	# vulnerable to enemies?
+
+
 func _physics_process(delta):
 	# Don't move if there are no lives left.
 	if Global.lives <= 0:
 		return
 
+	# _phase()
+
 	# Handle jump
 	if is_on_floor():
 		coyote_timer = (coyote_time + delta)
@@ -131,6 +231,8 @@ func _physics_process(delta):
 	if coyote_timer <= 0:
 		velocity.y += gravity * delta
 
+	# _shrink()
+
 	# Get the input direction and handle the movement/deceleration.
 	var direction = Input.get_axis(Actions.lookup(player, "left"), Actions.lookup(player, "right"))
 	if direction:
@@ -142,6 +244,8 @@ func _physics_process(delta):
 	else:
 		velocity.x = move_toward(velocity.x, 0, acceleration * delta)
 
+	# _glide()
+
 	if velocity == Vector2.ZERO:
 		_sprite.play("idle")
 	else:
@@ -156,6 +260,8 @@ func _physics_process(delta):
 
 	move_and_slide()
 
+	# _teleport(direction)
+
 	coyote_timer -= delta
 	jump_buffer_timer -= delta