Relintai/broken_seals_roguelike
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Add a test only variant for line of sight tests.

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Relintai 2020-07-17 12:46:58 +02:00
parent c616fbf56e
commit 777f91cfb5
1 changed files with 129 additions and 6 deletions
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135
game/scenes/DungeonLevel.gd
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@ -149,7 +149,7 @@ func update_visibility():
# if !test_rect.has_point(tpos):
# continue
if plotLine(tp.x, tp.y, tpos.x, tpos.y):
if visibility_test(tp.x, tp.y, tpos.x, tpos.y):
b.set_visibility(true)
e.sets_target(_player)
@ -484,6 +484,18 @@ func on_visibility_changed():
func make_cell_visible(x : int, y : int):
visibility_map.set_cell(x, y, -1)
func plotLine(x0 : int,y0 : int, x1 : int,y1 : int) -> bool:
if abs(y1 - y0) < abs(x1 - x0):
if x0 > x1:
return plotLineLowReverse(x1, y1, x0, y0)
else:
return plotLineLow(x0, y0, x1, y1)
else:
if y0 > y1:
return plotLineHighReverse(x1, y1, x0, y0)
else:
return plotLineHigh(x0, y0, x1, y1)
func plotLineLow(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
var dx : int = x1 - x0
var dy : int = y1 - y0
@ -606,14 +618,125 @@ func plotLineHighReverse(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
return true
func plotLine(x0 : int,y0 : int, x1 : int,y1 : int) -> bool:
func visibility_test(x0 : int,y0 : int, x1 : int,y1 : int) -> bool:
if abs(y1 - y0) < abs(x1 - x0):
if x0 > x1:
return plotLineLowReverse(x1, y1, x0, y0)
return visibility_test_low_reverse(x1, y1, x0, y0)
else:
return plotLineLow(x0, y0, x1, y1)
return visibility_test_low(x0, y0, x1, y1)
else:
if y0 > y1:
return plotLineHighReverse(x1, y1, x0, y0)
return visibility_test_high_reverse(x1, y1, x0, y0)
else:
return plotLineHigh(x0, y0, x1, y1)
return visibility_test_high(x0, y0, x1, y1)
func visibility_test_low(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
var dx : int = x1 - x0
var dy : int = y1 - y0
var yi : int = 1
if dy < 0:
yi = - 1
dy = - dy
var D : int = 2 * dy - dx
var y : int = y0
for x in range(x0, x1):
if map[x][y] != Tile.Floor:
return false
if D > 0:
y = y + yi
D = D - 2 * dx
D = D + 2 * dy
return true
func visibility_test_low_reverse(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
var arr = []
var dx : int = x1 - x0
var dy : int = y1 - y0
var yi : int = 1
if dy < 0:
yi = - 1
dy = - dy
var D : int = 2 * dy - dx
var y : int = y0
for x in range(x0, x1):
arr.append([x, y])
if D > 0:
y = y + yi
D = D - 2 * dx
D = D + 2 * dy
for i in range(arr.size() - 1, 0, -1):
var x : int = arr[i][0]
y = arr[i][1]
if map[x][y] != Tile.Floor:
return false
return true
func visibility_test_high(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
var dx : int = x1 - x0
var dy : int = y1 - y0
var xi : int = 1
if dx < 0:
xi = -1
dx = -dx
var D : int = 2 * dx - dy
var x : int = x0
for y in range(y0, y1):
if map[x][y] != Tile.Floor:
return false
if D > 0:
x = x + xi
D = D - 2 * dy
D = D + 2 * dx
return true
func visibility_test_high_reverse(x0 : int, y0 : int, x1 : int, y1 : int) -> bool:
var arr = []
var dx : int = x1 - x0
var dy : int = y1 - y0
var xi : int = 1
if dx < 0:
xi = -1
dx = -dx
var D : int = 2 * dx - dy
var x : int = x0
for y in range(y0, y1):
arr.append([x, y])
if D > 0:
x = x + xi
D = D - 2 * dy
D = D + 2 * dx
for i in range(arr.size() - 1, 0, -1):
x = arr[i][0]
var y : int = arr[i][1]
if map[x][y] != Tile.Floor:
return false
return true