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@@ -1,30 +1,28 @@
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-extends RigidBody2D
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-
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class_name Player
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+extends RigidBody2D
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-""" Character Demo, written by Juan Linietsky.
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-
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- Implementation of a 2D Character controller.
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- This implementation uses the physics engine for
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- controlling a character, in a very similar way
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- than a 3D character controller would be implemented.
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-
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- Using the physics engine for this has the main advantages:
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- - Easy to write.
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- - Interaction with other physics-based objects is free
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- - Only have to deal with the object linear velocity, not position
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- - All collision/area framework available
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-
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- But also has the following disadvantages:
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- - Objects may bounce a little bit sometimes
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- - Going up ramps sends the chracter flying up, small hack is needed.
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- - A ray collider is needed to avoid sliding down on ramps and
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- undesiderd bumps, small steps and rare numerical precision errors.
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- (another alternative may be to turn on friction when the character is not moving).
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- - Friction cant be used, so floor velocity must be considered
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- for moving platforms. """
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+# Character Demo, written by Juan Linietsky.
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+#
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+# Implementation of a 2D Character controller.
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+# This implementation uses the physics engine for
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+# controlling a character, in a very similar way
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+# than a 3D character controller would be implemented.
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+#
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+# Using the physics engine for this has the main advantages:
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+# - Easy to write.
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+# - Interaction with other physics-based objects is free
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+# - Only have to deal with the object linear velocity, not position
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+# - All collision/area framework available
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+#
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+# But also has the following disadvantages:
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+# - Objects may bounce a little bit sometimes
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+# - Going up ramps sends the chracter flying up, small hack is needed.
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+# - A ray collider is needed to avoid sliding down on ramps and
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+# undesiderd bumps, small steps and rare numerical precision errors.
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+# (another alternative may be to turn on friction when the character is not moving).
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+# - Friction cant be used, so floor velocity must be considered
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+# for moving platforms.
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-# Member variables
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const WALK_ACCEL = 800.0
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const WALK_DEACCEL = 800.0
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const WALK_MAX_VELOCITY = 200.0
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@@ -49,27 +47,6 @@ var shoot_time = 1e20
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var Bullet = preload("res://player/Bullet.tscn")
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var Enemy = preload("res://enemy/Enemy.tscn")
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-
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-func _shot_bullet():
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- shoot_time = 0
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- var bi = Bullet.instance()
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- var ss
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- if siding_left:
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- ss = -1.0
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- else:
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- ss = 1.0
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- var pos = position + ($BulletShoot as Position2D).position * Vector2(ss, 1.0)
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-
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- bi.position = pos
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- get_parent().add_child(bi)
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-
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- bi.linear_velocity = Vector2(800.0 * ss, -80)
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-
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- ($Sprite/Smoke as Particles2D).restart()
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- ($SoundShoot as AudioStreamPlayer2D).play()
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-
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- add_collision_exception_with(bi) # Make bullet and this not collide
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-
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func _integrate_forces(s):
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var lv = s.get_linear_velocity()
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var step = s.get_step()
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@@ -77,7 +54,7 @@ func _integrate_forces(s):
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var new_anim = anim
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var new_siding_left = siding_left
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- # Get the controls
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+ # Get the controls.
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var move_left = Input.is_action_pressed("move_left")
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var move_right = Input.is_action_pressed("move_right")
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var jump = Input.is_action_pressed("jump")
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@@ -85,19 +62,13 @@ func _integrate_forces(s):
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var spawn = Input.is_action_pressed("spawn")
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if spawn:
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- var e = Enemy.instance()
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- var p = position
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-
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- p.y = p.y - 100
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- e.position = p
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-
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- get_parent().add_child(e)
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+ call_deferred("_spawn_enemy_above")
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- # Deapply prev floor velocity
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+ # Deapply prev floor velocity.
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lv.x -= floor_h_velocity
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floor_h_velocity = 0.0
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- # Find the floor (a contact with upwards facing collision normal)
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+ # Find the floor (a contact with upwards facing collision normal).
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var found_floor = false
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var floor_index = -1
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@@ -118,14 +89,14 @@ func _integrate_forces(s):
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if found_floor:
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airborne_time = 0.0
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else:
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- airborne_time += step # Time it spent in the air
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+ airborne_time += step # Time it spent in the air.
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var on_floor = airborne_time < MAX_FLOOR_AIRBORNE_TIME
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- # Process jump
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+ # Process jump.
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if jumping:
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if lv.y > 0:
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- # Set off the jumping flag if going down
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+ # Set off the jumping flag if going down.
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jumping = false
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elif not jump:
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stopping_jump = true
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@@ -134,7 +105,7 @@ func _integrate_forces(s):
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lv.y += STOP_JUMP_FORCE * step
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if on_floor:
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- # Process logic when character is on floor
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+ # Process logic when character is on floor.
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if move_left and not move_right:
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if lv.x > -WALK_MAX_VELOCITY:
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lv.x -= WALK_ACCEL * step
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@@ -148,14 +119,14 @@ func _integrate_forces(s):
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xv = 0
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lv.x = sign(lv.x) * xv
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- # Check jump
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+ # Check jump.
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if not jumping and jump:
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lv.y = -JUMP_VELOCITY
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jumping = true
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stopping_jump = false
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($SoundJump as AudioStreamPlayer2D).play()
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- # Check siding
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+ # Check siding.
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if lv.x < 0 and move_left:
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new_siding_left = true
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elif lv.x > 0 and move_right:
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@@ -173,7 +144,7 @@ func _integrate_forces(s):
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else:
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new_anim = "run"
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else:
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- # Process logic when the character is in the air
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+ # Process logic when the character is in the air.
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if move_left and not move_right:
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if lv.x > -WALK_MAX_VELOCITY:
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lv.x -= AIR_ACCEL * step
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@@ -199,7 +170,7 @@ func _integrate_forces(s):
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else:
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new_anim = "falling"
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- # Update siding
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+ # Update siding.
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if new_siding_left != siding_left:
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if new_siding_left:
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($Sprite as Sprite).scale.x = -1
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@@ -208,18 +179,45 @@ func _integrate_forces(s):
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siding_left = new_siding_left
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- # Change animation
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+ # Change animation.
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if new_anim != anim:
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anim = new_anim
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- ($Anim as AnimationPlayer).play(anim)
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+ ($AnimationPlayer as AnimationPlayer).play(anim)
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shooting = shoot
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- # Apply floor velocity
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+ # Apply floor velocity.
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if found_floor:
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floor_h_velocity = s.get_contact_collider_velocity_at_position(floor_index).x
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lv.x += floor_h_velocity
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- # Finally, apply gravity and set back the linear velocity
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+ # Finally, apply gravity and set back the linear velocity.
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lv += s.get_total_gravity() * step
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- s.set_linear_velocity(lv)
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+ s.set_linear_velocity(lv)
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+
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+
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+func _shot_bullet():
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+ shoot_time = 0
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+ var bi = Bullet.instance()
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+ var ss
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+ if siding_left:
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+ ss = -1.0
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+ else:
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+ ss = 1.0
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+ var pos = position + ($BulletShoot as Position2D).position * Vector2(ss, 1.0)
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+
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+ bi.position = pos
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+ get_parent().add_child(bi)
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+
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+ bi.linear_velocity = Vector2(800.0 * ss, -80)
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+
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+ ($Sprite/Smoke as Particles2D).restart()
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+ ($SoundShoot as AudioStreamPlayer2D).play()
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+
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+ add_collision_exception_with(bi) # Make bullet and this not collide.
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+
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+
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+func _spawn_enemy_above():
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+ var e = Enemy.instance()
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+ e.position = position + 100 * Vector2.UP
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+ get_parent().add_child(e)
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Aaron Franke