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finalize personenstromsimulation

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This commit is contained in:
Sandro Zimmermann 2025-12-18 16:32:49 +01:00
parent 14b94f9016
commit 4999ed0096
1 changed files with 26 additions and 34 deletions
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62
personenstromsimulation/pedestrian_sk.py
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@ -15,8 +15,8 @@ CELL_OBS = -1 # cell state: obstacle
EXIT_X = GRIDSIZE_X+1 # x-coordinate of exit
EXIT_Y = int(GRIDSIZE_Y/2) # y-coordinate of exit
VIS_PAUSE = 2 # time [s] between two visual updates
VIS_STEPS = 1 # stride [steps] between two visual updates
VIS_PAUSE = 0.2 # time [s] between two visual updates
VIS_STEPS = 2 # stride [steps] between two visual updates
# count pedestrians left in domain
def count_peds(grid):
@ -46,8 +46,6 @@ def comp_density(grid):
# state transition t -> t + dt
def update(old, new):
#print(count_peds(old))
for x in range(1, GRIDSIZE_X+1):
for y in range(1, GRIDSIZE_Y+1):
#
@ -57,49 +55,43 @@ def update(old, new):
delta_x = EXIT_X - x
delta_y = EXIT_Y - y
#terrain = dict(N = {}, NE = {}, E = {}, SE = {}, S = {}, SW = {}, W = {}, NW = {})
terrain = dict(N = {}, E = {}, S = {}, W = {})
terrain["N"]["x"], terrain["N"]["y"], terrain["N"]["cell"], terrain["N"]["vector"] = set_terrain(old, x, y+1)
#terrain["NE"]["x"], terrain["NE"]["y"], terrain["NE"]["cell"], terrain["NE"]["vector"] = set_terrain(old, x+1, y+1)
terrain["E"]["x"], terrain["E"]["y"], terrain["E"]["cell"], terrain["E"]["vector"] = set_terrain(old, x+1, y)
#terrain["SE"]["x"], terrain["SE"]["y"], terrain["SE"]["cell"], terrain["SE"]["vector"] = set_terrain(old, x+1, y-1)
terrain["S"]["x"], terrain["S"]["y"], terrain["S"]["cell"], terrain["S"]["vector"] = set_terrain(old, x, y-1)
#terrain["SW"]["x"], terrain["SW"]["y"], terrain["SW"]["cell"], terrain["SW"]["vector"] = set_terrain(old, x-1, y-1)
terrain["W"]["x"], terrain["W"]["y"], terrain["W"]["cell"], terrain["W"]["vector"] = set_terrain(old, x-1, y)
#terrain["NW"]["x"], terrain["NW"]["y"], terrain["NW"]["cell"], terrain["NW"]["vector"] = set_terrain(old, x-1, y+1)
'''print(terrain["N"]["cell"])
print(terrain["E"]["cell"])
print(terrain["S"]["cell"])
print(terrain["W"]["cell"])'''
min = np.inf
jump_to = None
min = np.inf
move_to = None
# Alternative move_to when optimal move_to is blocked
for key in terrain:
if terrain[key]["cell"] == CELL_EMP:
if terrain[key]["vector"] < min:
min = terrain[key]["vector"]
jump_to = terrain[key]
'''for key in terrain:
if terrain[key]["vector"] < min:
min = terrain[key]["vector"]
jump_to = terrain[key]'''
print(jump_to)
if jump_to != None:
new[jump_to["x"], jump_to["y"]] = CELL_PED
move_to = terrain[key]
if move_to != None:
new[move_to["x"], move_to["y"]] = CELL_PED
old[move_to["x"], move_to["y"]] = CELL_OBS
old[x,y] = CELL_OBS
else:
new[x,y] = old[x,y]
else:
'''old[x,y] = CELL_OBS
print(delta_x)
print(delta_y)
print("")
print(x)
print(y)
print(old[x,y])
print(new[x,y])
print("")'''
# Stay still when optimal move_to is blocked
'''for key in terrain:
if terrain[key]["vector"] < min:
min = terrain[key]["vector"]
move_to = terrain[key]
if move_to != None and move_to["cell"] == CELL_EMP:
new[move_to["x"], move_to["y"]] = CELL_PED
old[move_to["x"], move_to["y"]] = CELL_OBS
old[x,y] = CELL_OBS
else:
new[x,y] = old[x,y]'''
def set_terrain(grid, x, y):
cell = grid[x,y]
@ -136,9 +128,9 @@ plt.pause(VIS_PAUSE)
while count_peds(old) > 0 and time < MAX_TIME:
new[1:GRIDSIZE_X+1,1:GRIDSIZE_Y+1] = CELL_EMP
update(old, new)
new[EXIT_X,EXIT_Y-1] = CELL_OBS # clear exit
new[EXIT_X,EXIT_Y-1] = CELL_EMP # clear exit
new[EXIT_X,EXIT_Y] = CELL_EMP # clear exit
new[EXIT_X,EXIT_Y+1] = CELL_OBS # clear exit
new[EXIT_X,EXIT_Y+1] = CELL_EMP # clear exit
old = new.copy()
numpeds = count_peds(old)
dens.append(comp_density(old))