Merge pull request #445 from aaronfranke/kc2d

Organize and simplify the Kinematic Character 2D demo

2d/kinematic_character/README.md

@@ -1,4 +1,4 @@
-# Kinematic Character
+# Kinematic Character 2D
 
 Example of how to make a kinematic character controller in 2D using
 [`KinematicBody2D`](https://docs.godotengine.org/en/latest/classes/class_kinematicbody2d.html).

2d/kinematic_character/level/circle.png.import

@@ -2,15 +2,15 @@
 
 importer="texture"
 type="StreamTexture"
-path="res://.import/circle.png-10953cad44a8947fbdd4128a631e9e52.stex"
+path="res://.import/circle.png-65a28e998f412b3cddff971e28b7d768.stex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://circle.png"
-dest_files=[ "res://.import/circle.png-10953cad44a8947fbdd4128a631e9e52.stex" ]
+source_file="res://level/circle.png"
+dest_files=[ "res://.import/circle.png-65a28e998f412b3cddff971e28b7d768.stex" ]
 
 [params]
 

2d/kinematic_character/level/long_obstacle.png.import

@@ -2,15 +2,15 @@
 
 importer="texture"
 type="StreamTexture"
-path="res://.import/long_obstacle.png-1b33440a15b4db156b2a9ec7e9a2a80e.stex"
+path="res://.import/long_obstacle.png-d70ee394f796e1de9a423783aa84ec5d.stex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://long_obstacle.png"
-dest_files=[ "res://.import/long_obstacle.png-1b33440a15b4db156b2a9ec7e9a2a80e.stex" ]
+source_file="res://level/long_obstacle.png"
+dest_files=[ "res://.import/long_obstacle.png-d70ee394f796e1de9a423783aa84ec5d.stex" ]
 
 [params]
 

2d/kinematic_character/level/obstacle.png.import

@@ -2,15 +2,15 @@
 
 importer="texture"
 type="StreamTexture"
-path="res://.import/obstacle.png-dfb3e99d3af573251007cdf5e1c252b9.stex"
+path="res://.import/obstacle.png-06287f6b2d26dd03335fd87ab78c2cc2.stex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://obstacle.png"
-dest_files=[ "res://.import/obstacle.png-dfb3e99d3af573251007cdf5e1c252b9.stex" ]
+source_file="res://level/obstacle.png"
+dest_files=[ "res://.import/obstacle.png-06287f6b2d26dd03335fd87ab78c2cc2.stex" ]
 
 [params]
 

2d/kinematic_character/level/princess.gd

@@ -0,0 +1,5 @@
+extends Node
+
+func _on_body_entered(body):
+	if body.name == "Player":
+		$"../WinText".show()

2d/kinematic_character/level/princess.png.import

@@ -2,15 +2,15 @@
 
 importer="texture"
 type="StreamTexture"
-path="res://.import/princess.png-9b4caf2cfe324ae3734249d5b559d39d.stex"
+path="res://.import/princess.png-359cb1d8a4fd115119b22ac7899e2787.stex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://princess.png"
-dest_files=[ "res://.import/princess.png-9b4caf2cfe324ae3734249d5b559d39d.stex" ]
+source_file="res://level/princess.png"
+dest_files=[ "res://.import/princess.png-359cb1d8a4fd115119b22ac7899e2787.stex" ]
 
 [params]
 

2d/kinematic_character/player.gd

@@ -1,57 +0,0 @@
-extends KinematicBody2D
-
-# Angle in degrees towards either side that the player can consider "floor".
-const FLOOR_ANGLE_TOLERANCE = 40
-const WALK_FORCE = 600
-const WALK_MIN_SPEED = 10
-const WALK_MAX_SPEED = 200
-const STOP_FORCE = 1300
-const JUMP_SPEED = 200
-const JUMP_MAX_AIRBORNE_TIME = 0.2
-
-const SLIDE_STOP_VELOCITY = 1.0 # Pixels/second
-const SLIDE_STOP_MIN_TRAVEL = 1.0 # Pixels
-
-var velocity = Vector2()
-var on_air_time = 100
-var jumping = false
-var prev_jump_pressed = false
-
-onready var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
-
-func _physics_process(delta):
-	var force = Vector2(0, gravity)
-	var walk = Input.get_action_strength("move_right") - Input.get_action_strength("move_left")
-	var jump = Input.is_action_pressed("jump")
-
-	if (velocity.x <= WALK_MIN_SPEED and velocity.x > -WALK_MAX_SPEED) or (velocity.x >= -WALK_MIN_SPEED and velocity.x < WALK_MAX_SPEED):
-		force.x += WALK_FORCE * walk
-	
-	if abs(walk) < 0.5:
-		var vsign = sign(velocity.x)
-		var vlen = abs(velocity.x)
-		vlen -= STOP_FORCE * delta
-		if vlen < 0:
-			vlen = 0
-		velocity.x = vlen * vsign
-
-	# Integrate forces to velocity.
-	velocity += force * delta
-	# Integrate velocity into motion and move.
-	velocity = move_and_slide(velocity, Vector2.UP)
-
-	if is_on_floor():
-		on_air_time = 0
-
-	if jumping and velocity.y > 0:
-		# If falling, no longer jumping.
-		jumping = false
-
-	if on_air_time < JUMP_MAX_AIRBORNE_TIME and jump and not prev_jump_pressed and not jumping:
-		# Jump must also be allowed to happen if the character left the floor a little bit ago.
-		# Makes controls more snappy.
-		velocity.y = -JUMP_SPEED
-		jumping = true
-
-	on_air_time += delta
-	prev_jump_pressed = jump

2d/kinematic_character/player/player.gd

@@ -0,0 +1,32 @@
+extends KinematicBody2D
+
+const WALK_FORCE = 600
+const WALK_MAX_SPEED = 200
+const STOP_FORCE = 1300
+const JUMP_SPEED = 200
+
+var velocity = Vector2()
+
+onready var gravity = ProjectSettings.get_setting("physics/2d/default_gravity")
+
+func _physics_process(delta):
+	# Horizontal movement code. First, get the player's input.
+	var walk = WALK_FORCE * (Input.get_action_strength("move_right") - Input.get_action_strength("move_left"))
+	# Slow down the player if they're not trying to move.
+	if abs(walk) < WALK_FORCE * 0.2:
+		# The velocity, slowed down a bit, and then reassigned.
+		velocity.x = move_toward(velocity.x, 0, STOP_FORCE * delta)
+	else:
+		velocity.x += walk * delta
+	# Clamp to the maximum horizontal movement speed.
+	velocity.x = clamp(velocity.x, -WALK_MAX_SPEED, WALK_MAX_SPEED)
+
+	# Vertical movement code. Apply gravity.
+	velocity.y += gravity * delta
+
+	# Move based on the velocity and snap to the ground.
+	velocity = move_and_slide_with_snap(velocity, Vector2.DOWN, Vector2.UP)
+
+	# Check for jumping. is_on_floor() must be called after movement code.
+	if is_on_floor() and Input.is_action_just_pressed("jump"):
+		velocity.y = -JUMP_SPEED

2d/kinematic_character/player/player.png.import

@@ -2,15 +2,15 @@
 
 importer="texture"
 type="StreamTexture"
-path="res://.import/player.png-2dd0af52de4b213777cd8c9df94c0978.stex"
+path="res://.import/player.png-1ad27fc2a62fa126eae918723933dd6f.stex"
 metadata={
 "vram_texture": false
 }
 
 [deps]
 
-source_file="res://player.png"
-dest_files=[ "res://.import/player.png-2dd0af52de4b213777cd8c9df94c0978.stex" ]
+source_file="res://player/player.png"
+dest_files=[ "res://.import/player.png-1ad27fc2a62fa126eae918723933dd6f.stex" ]
 
 [params]
 

2d/kinematic_character/player/player.tscn

@@ -1,7 +1,7 @@
 [gd_scene load_steps=4 format=2]
 
-[ext_resource path="res://player.gd" type="Script" id=1]
-[ext_resource path="res://player.png" type="Texture" id=2]
+[ext_resource path="res://player/player.gd" type="Script" id=1]
+[ext_resource path="res://player/player.png" type="Texture" id=2]
 
 [sub_resource type="RectangleShape2D" id=1]
 extents = Vector2( 7, 7 )

2d/kinematic_character/project.godot

@@ -15,7 +15,7 @@ _global_script_class_icons={
 
 [application]
 
-config/name="Kinematic Character"
+config/name="Kinematic Character 2D"
 run/main_scene="res://world.tscn"
 config/icon="res://icon.png"
 

2d/kinematic_character/world.gd

@@ -1,6 +0,0 @@
-extends Node2D
-
-func _on_princess_body_enter(body):
-	# The name of this editor-generated callback is unfortunate.
-	if body.get_name() == "Player":
-		$WinText.show()

2d/kinematic_character/world.tscn

@@ -1,11 +1,11 @@
 [gd_scene load_steps=19 format=2]
 
-[ext_resource path="res://world.gd" type="Script" id=1]
-[ext_resource path="res://obstacle.png" type="Texture" id=2]
-[ext_resource path="res://player.tscn" type="PackedScene" id=3]
-[ext_resource path="res://princess.png" type="Texture" id=4]
-[ext_resource path="res://circle.png" type="Texture" id=5]
-[ext_resource path="res://long_obstacle.png" type="Texture" id=6]
+[ext_resource path="res://level/obstacle.png" type="Texture" id=2]
+[ext_resource path="res://player/player.tscn" type="PackedScene" id=3]
+[ext_resource path="res://level/princess.png" type="Texture" id=4]
+[ext_resource path="res://level/circle.png" type="Texture" id=5]
+[ext_resource path="res://level/long_obstacle.png" type="Texture" id=6]
+[ext_resource path="res://level/princess.gd" type="Script" id=7]
 
 [sub_resource type="RectangleShape2D" id=1]
 extents = Vector2( 8, 8 )
@@ -19,6 +19,11 @@ extents = Vector2( 8, 8 )
 0/tile_mode = 0
 0/occluder_offset = Vector2( 0, 0 )
 0/navigation_offset = Vector2( 0, 0 )
+0/shape_offset = Vector2( 8, 8 )
+0/shape_transform = Transform2D( 1, 0, 0, 1, 8, 8 )
+0/shape = SubResource( 1 )
+0/shape_one_way = false
+0/shape_one_way_margin = 1.0
 0/shapes = [ {
 "autotile_coord": Vector2( 0, 0 ),
 "one_way": false,
@@ -112,7 +117,6 @@ extents = Vector2( 8, 8 )
 extents = Vector2( 32, 8 )
 
 [node name="World" type="Node2D"]
-script = ExtResource( 1 )
 
 [node name="TileMap" type="TileMap" parent="."]
 tile_set = SubResource( 2 )
@@ -154,6 +158,7 @@ anims/updown = SubResource( 6 )
 
 [node name="Princess" type="Area2D" parent="."]
 position = Vector2( 97, 72 )
+script = ExtResource( 7 )
 
 [node name="Collision" type="CollisionShape2D" parent="Princess"]
 shape = SubResource( 7 )
@@ -261,4 +266,4 @@ shape = SubResource( 12 )
 [node name="Camera2D" type="Camera2D" parent="."]
 offset = Vector2( 265, 247 )
 current = true
-[connection signal="body_entered" from="Princess" to="." method="_on_princess_body_enter"]
+[connection signal="body_entered" from="Princess" to="Princess" method="_on_body_entered"]

2d/platformer/src/Actors/Player.gd

@@ -14,7 +14,7 @@ onready var gun = $Sprite/Gun
 
 
 func _ready():
-	# Static types are necessary to avoid
+	# Static types are necessary here to avoid warnings.
 	var camera: Camera2D = $Camera
 	if action_suffix == "_p1":
 		camera.custom_viewport = $"../.."