GameDev/HoppyEaster
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Improve and Speedup MapGeneration Code #18

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Snoweuph merged 1 commit from dev-map-generation into dev-base 2023-04-07 14:55:24 +00:00
Conversation 0 Commits 1 Files changed 1 +66 -51
1 changed files with 66 additions and 51 deletions
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59
Scripts/MapGenerator.gd
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@ -17,18 +17,33 @@ extends TileMap
@export var cave_mine_size_threshold := 80 @export var cave_mine_size_threshold := 80
func _ready(): func _ready():
var time = generate()
print("time for generation: " + str(time))
pass
func generate() -> float:
var start_time = Time.get_unix_time_from_system() var start_time = Time.get_unix_time_from_system()
randomize() randomize()
random_fill() fill_random_noise()
make_cave_areas()
make_borders() for i in cave_gen_iterations:
change_cells_by_neighbor_thresholds()
set_borders_solid()
prepare_player_start_area() prepare_player_start_area()
connect_caves(get_caves()) connect_caves(get_caves())
make_cave_areas()
make_borders()
print(Time.get_unix_time_from_system() - start_time)
func random_fill(): for i in cave_gen_iterations:
change_cells_by_neighbor_thresholds()
set_borders_solid()
return Time.get_unix_time_from_system() - start_time
func fill_random_noise():
for x in width: for x in width:
for y in height: for y in height:
if randf() < fill_percentage: if randf() < fill_percentage:
@ -37,13 +52,14 @@ func random_fill():
self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0))
pass pass
func make_borders(): func set_borders_solid():
for x in width: for x in width:
self.set_cell(0, Vector2i(x,0),solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,0),solid_id, Vector2i(0, 0))
self.set_cell(0, Vector2i(x,height-1),solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,height-1),solid_id, Vector2i(0, 0))
for y in height: for y in height:
self.set_cell(0, Vector2i(0,y),solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(0,y),solid_id, Vector2i(0, 0))
self.set_cell(0, Vector2i(width-1,y),solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(width-1,y),solid_id, Vector2i(0, 0))
pass
func prepare_player_start_area(): func prepare_player_start_area():
var center = Vector2i(width/2, height/2) var center = Vector2i(width/2, height/2)
@ -62,9 +78,9 @@ func prepare_player_start_area():
if !(p2 > 0 or p2 <= - (start_area_size*2 - p*2)): if !(p2 > 0 or p2 <= - (start_area_size*2 - p*2)):
self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0))
p2 -= 1 p2 -= 1
pass
func make_cave_areas(): func change_cells_by_neighbor_thresholds():
for i in cave_gen_iterations:
for x in range(1, width): for x in range(1, width):
for y in range(1, height): for y in range(1, height):
# Count Solid Neighbor Cells # Count Solid Neighbor Cells
@ -81,10 +97,9 @@ func make_cave_areas():
if self.get_cell_source_id(0, Vector2i(x, y+1)) == solid_id: count +=1 if self.get_cell_source_id(0, Vector2i(x, y+1)) == solid_id: count +=1
if self.get_cell_source_id(0, Vector2i(x+1, y+1)) == solid_id: count +=1 if self.get_cell_source_id(0, Vector2i(x+1, y+1)) == solid_id: count +=1
# Check Wether to Change the Cell or Not # Check Threshold
if count < nonsolid_threshold: if count < nonsolid_threshold:
self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,y),non_solid_id, Vector2i(0, 0))
if count >= solid_threshold: if count >= solid_threshold:
self.set_cell(0, Vector2i(x,y),solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(x,y),solid_id, Vector2i(0, 0))
pass pass
@ -127,7 +142,7 @@ func flood_fill(tilex, tiley, caves) -> Array:
caves.append(cave) caves.append(cave)
return caves return caves
func choose(choices): func choose_rand(choices):
randomize() randomize()
var rand_index = randi() % choices.size() var rand_index = randi() % choices.size()
@ -139,8 +154,8 @@ func connect_caves(caves):
for cave in tunnel_caves: for cave in tunnel_caves:
if prev_cave: if prev_cave:
var new_point = choose(cave) var new_point = choose_rand(cave)
var prev_point = choose(prev_cave) var prev_point = choose_rand(prev_cave)
# ensure not the same point # ensure not the same point
if new_point != prev_point: if new_point != prev_point:
@ -151,7 +166,7 @@ func connect_caves(caves):
func create_tunnel(point1, point2, cave): func create_tunnel(point1, point2, cave):
randomize() # for randf randomize() # for randf
var max_steps = 500 # so editor won't hang if walk fails var max_steps = 500 # so game won't hang if walk fails
var steps = 0 var steps = 0
var drunk_x = point2[0] var drunk_x = point2[0]
var drunk_y = point2[1] var drunk_y = point2[1]
@ -167,13 +182,13 @@ func create_tunnel(point1, point2, cave):
var weight = 1 var weight = 1
# weight the random walk against edges # weight the random walk against edges
if drunk_x < point1.x: # drunkard is left of point1 if drunk_x < point1.x:
e += weight e += weight
elif drunk_x > point1.x: # drunkard is right of point1 elif drunk_x > point1.x:
w += weight w += weight
if drunk_y < point1.y: # drunkard is above point1 if drunk_y < point1.y:
s += weight s += weight
elif drunk_y > point1.y: # drunkard is below point1 elif drunk_y > point1.y:
n += weight n += weight
# normalize probabilities so they form a range from 0 to 1 # normalize probabilities so they form a range from 0 to 1
@ -186,7 +201,7 @@ func create_tunnel(point1, point2, cave):
var dx var dx
var dy var dy
# choose the direction # choose_rand the direction
var choice = randf() var choice = randf()
if 0 <= choice and choice < n: if 0 <= choice and choice < n:
@ -208,9 +223,9 @@ func create_tunnel(point1, point2, cave):
drunk_x += dx drunk_x += dx
drunk_y += dy drunk_y += dy
if self.get_cell_source_id(0, Vector2i(drunk_x, drunk_y)) == solid_id: if self.get_cell_source_id(0, Vector2i(drunk_x, drunk_y)) == solid_id:
self.set_cell(0, Vector2i(drunk_x, drunk_y),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(drunk_x, drunk_y),non_solid_id, Vector2i(0, 0))
#make tunnel wider #make tunnel wider
self.set_cell(0, Vector2i(drunk_x+1, drunk_y),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(drunk_x+1, drunk_y),non_solid_id, Vector2i(0, 0))
self.set_cell(0, Vector2i(drunk_x+1, drunk_y+1),non_solid_id, Vector2i(0, 0)) self.set_cell(0, Vector2i(drunk_x+1, drunk_y+1),non_solid_id, Vector2i(0, 0))
pass