bendns' repos / chess
online multiplayer chess game (note server currently down)
Diffstat (limited to 'ui/board/Arrows.gd')
-rw-r--r--ui/board/Arrows.gd51
1 files changed, 34 insertions, 17 deletions
diff --git a/ui/board/Arrows.gd b/ui/board/Arrows.gd
index b2597d4..5790117 100644
--- a/ui/board/Arrows.gd
+++ b/ui/board/Arrows.gd
@@ -2,7 +2,7 @@ extends Control
var arrows := [] # [from, to, color]
var circles := [] # [position, color]
-var first: Vector2
+var arrow_origin: Vector2
var b: Grid
var t := 0.0
@@ -21,8 +21,8 @@ func _setup(_b: Grid):
func right_clicked(clicked: String) -> void:
+ arrow_origin = Chess.algebraic2vec(clicked)
t = 0
- first = ((Chess.algebraic2vec(clicked) * b.piece_size) + b.piece_size / 2)
func left_clicked(sq: String) -> void:
@@ -35,34 +35,44 @@ func _process(delta):
update()
+func scale_vector(v: Vector2) -> Vector2:
+ return (v * b.piece_size) + b.piece_size / 2
+
+
+func descale_vector(v: Vector2) -> Vector2:
+ return ((v / b.piece_size) - Vector2(.5, .5)).round()
+
+
+func shorten(v: Vector2, origin: Vector2, by: float) -> Vector2:
+ return (v).move_toward(origin, by)
+
+
func _draw():
if !b:
return
- var s = b.piece_size
- if first:
+ if arrow_origin:
var shift = Input.is_action_pressed("shift")
- var loc_m = ((b.get_local_mouse_position() / s) - Vector2(.5, .5)).round()
- loc_m = Vector2(clamp(loc_m.x, 0, 7), clamp(loc_m.y, 0, 7))
- var m_pos = ((loc_m * s) + s / 2).move_toward(first, 25)
+ var mouse_position = shorten(descale_vector(b.get_local_mouse_position()), arrow_origin, .25)
+ mouse_position = Vector2(clamp(mouse_position.x, 0, 7), clamp(mouse_position.y, 0, 7)) # clamp to board limits
var clr = red_overlay if shift else green_overlay
if Input.is_action_pressed("rclick"): # previews
- if first != m_pos:
- draw_arrow(first, m_pos, clr)
+ if arrow_origin != mouse_position:
+ draw_arrow(arrow_origin, mouse_position, clr)
elif t <= .25:
- draw_arc(first, (s.x / 2) - 6, 0, PI * 2, 40, clr, 10, true)
+ draw_ring(arrow_origin, clr)
else:
var flag := true # no for-else :c
- if first != m_pos:
- var arr := [first, m_pos, clr]
+ if arrow_origin != mouse_position:
+ var arr := [arrow_origin, mouse_position, clr]
for i in range(len(arrows)):
- if arrows[i][0] == first and arrows[i][1] == m_pos:
+ if arrows[i][0] == arrow_origin and arrows[i][1] == mouse_position:
arrows.remove(i)
flag = false
break
if flag:
arrows.append(arr)
elif t <= .25:
- var arr := [first, clr]
+ var arr := [arrow_origin, clr]
for i in range(len(circles)):
if circles[i][0] == arr[0]:
circles.remove(i)
@@ -70,16 +80,18 @@ func _draw():
break
if flag:
circles.append(arr)
- first = Vector2.ZERO
+ arrow_origin = Vector2.ZERO
t = 0
for a in arrows:
draw_arrow(a[0], a[1], a[2])
for ci in circles:
- draw_arc(ci[0], (s.x / 2) - 6, 0, PI * 2, 40, ci[1], 10, true)
+ draw_ring(ci[0], ci[1])
func draw_arrow(start: Vector2, end: Vector2, clr: Color):
+ start = scale_vector(start)
+ end = scale_vector(end)
draw_circle(start, float(w) / 2, clr)
draw_line(start, end, clr, w, true)
draw_triangle(start.angle_to_point(end), end, clr)
@@ -93,7 +105,12 @@ func draw_triangle(r: float, p: Vector2, c: Color) -> void:
draw_primitive(tri, [c, c, c], [])
+func draw_ring(at: Vector2, clr: Color) -> void:
+ at = scale_vector(at)
+ draw_arc(at, (b.piece_size.x / 2) - 6, 0, PI * 2, 40, clr, 10, true)
+
+
func clear_arrows():
arrows.resize(0)
circles.resize(0)
- first = Vector2.ZERO
+ arrow_origin = Vector2.ZERO