lot of work on 2D lighting and isometric maps

added a new demo, isometric_light that does full isometric sorting,
lights, shadows, etc.

2d/isometric_light/cubio.gd

@@ -0,0 +1,96 @@
+
+extends KinematicBody2D
+
+# member variables here, example:
+# var a=2
+# var b="textvar"
+
+const MAX_SPEED = 300.0
+const IDLE_SPEED = 10.0
+const ACCEL=5.0
+const VSCALE=0.5
+const SHOOT_INTERVAL=0.3
+
+var speed=Vector2()
+var current_anim=""
+var current_mirror=false
+
+var shoot_countdown=0
+
+func _input(ev):
+	if (ev.type==InputEvent.MOUSE_BUTTON and ev.button_index==1 and ev.pressed and shoot_countdown<=0):
+		var pos = get_canvas_transform().affine_inverse() * ev.pos
+		var dir = (pos-get_global_pos()).normalized()
+		var bullet = preload("res://shoot.scn").instance()
+		bullet.advance_dir=dir
+		bullet.set_pos( get_global_pos() + dir * 60 )
+		get_parent().add_child(bullet)
+		shoot_countdown=SHOOT_INTERVAL
+		
+		
+		
+
+func _fixed_process(delta):
+	
+	shoot_countdown-=delta
+	var dir = Vector2()
+	if (Input.is_action_pressed("up")):
+		dir+=Vector2(0,-1)
+	if (Input.is_action_pressed("down")):
+		dir+=Vector2(0,1)
+	if (Input.is_action_pressed("left")):
+		dir+=Vector2(-1,0)
+	if (Input.is_action_pressed("right")):
+		dir+=Vector2(1,0)
+		
+	if (dir!=Vector2()):
+		dir=dir.normalized()
+	speed = speed.linear_interpolate(dir*MAX_SPEED,delta*ACCEL)
+	var motion = speed * delta
+	motion.y*=VSCALE
+	motion=move(motion)
+	
+	if (is_colliding()):
+		var n = get_collision_normal()
+		motion=n.slide(motion)
+		move(motion)
+
+	var next_anim=""
+	var next_mirror=false
+	
+	if (dir==Vector2() and speed.length()<IDLE_SPEED):
+		next_anim="idle"
+		next_mirror=false
+	elif (speed.length()>IDLE_SPEED*0.1):
+		var angle = atan2(abs(speed.x),speed.y)	
+		
+		next_mirror = speed.x>0
+		if (angle<PI/8):
+			next_anim="bottom"
+			next_mirror=false
+		elif (angle<PI/4+PI/8):
+			next_anim="bottom_left"
+		elif (angle<PI*2/4+PI/8):
+			next_anim="left"
+		elif (angle<PI*3/4+PI/8):
+			next_anim="top_left"
+		else:
+			next_anim="top"
+			next_mirror=false
+		
+			
+	if (next_anim!=current_anim or next_mirror!=current_mirror):
+		get_node("frames").set_flip_h(next_mirror)
+		get_node("anim").play(next_anim)
+		current_anim=next_anim
+		current_mirror=next_mirror
+		
+
+
+func _ready():
+	# Initialization here
+	set_fixed_process(true)
+	set_process_input(true)
+	pass
+
+