day17 part1

2022/python/day17.py

@@ -32,9 +32,10 @@ SQUARE = (
     (0,0),(0,1),
 )
 
-ORDER = (('-',FLAT), ('+',CROSS), ('j',J), ('I',I), ('□',SQUARE))
+ORDER = (('-',FLAT), ('+',CROSS), ('j',J), ('I',I), ('o',SQUARE))
 
 OPS = {'>':operator.add, '<':operator.sub}
+OFF = {'>': (0,1), '<':(0,-1)}
 
 
 @dataclass
@@ -49,7 +50,11 @@ class Shape:
     def char(self):
         if self.moving:
             return '@'
-        return '#'
+        return self.at_rest_char
+    
+    @property
+    def at_rest_char(self):
+        return ORDER[self.rock%5][0]
 
     @property
     def str(self):
@@ -86,27 +91,30 @@ def all_coords(shapes):
             coords.add(c)
     return coords
 
-def collision_at(shapes, row, col, shape):
-    if shape is None:
-        raise Exception("Please provide a list of coordinate offsets from Y,X to draw")
+all_coords = set()
 
+def collision_at(shapes, offset):
+    if len(shapes) == 1:
+        # Nothing to compare
+        return False
+    shape = shapes[-1]
     # Take in all existing coordinates
     for y,x in shape.coords:
-        if (y+row,x+col) in all_coords(shapes[:-1]):
-            breakpoint()
+        if (y+offset[0],x+offset[1]) in all_coords:
             return True
     return False
 
-def out_of_bounds(row, col, height, width, shape=None):
+def out_of_bounds(height, width, shapes, offset):
+    shape = shapes[-1]
     if shape is None:
         raise Exception("Please provide a list of coordinate offsets from Y,X to draw")
-    for y,x in shape:
+    for y,x in shape.coords:
         #print(f"\t{row}+{y} > {height}\t", f"{col}+{x} > {width}\t", f"{col}+{x} < 0")
-        if row+y > height-1:
+        if y+offset[0] >= height:
             return True
-        if col+x >= width:
+        if x+offset[1] >= width:
             return True
-        if col+x < 0:
+        if x+offset[1] < 0:
             return True
     return False
 
@@ -117,24 +125,28 @@ def out_of_bounds(row, col, height, width, shape=None):
 def part1(rows):
     print(rows)
     instructions = [r for r in rows]
-    height = 8 
-    #height = 2022*4+4
+    height = 20 
+    height = 2022*4+4
     width = 7
     view = height - 20
 
     rock = 0
     shapes = []
     spawning = True
-    while rock < 2:
+    while rock < 2022:
         if spawning:
+            if shapes:
+                for c in shapes[-1].coords:
+                    all_coords.add(c)
+            if rock % 1000 == 0:
                 print("Spawn rock #", rock)
             X = 2
             Y = find_highest(shapes, height)  - 4
             shape = Shape(rock=rock, y=Y, x=X, shape=ORDER[rock%len(ORDER)])
             shapes.append(shape)
             spawning = False
-        render(width, height, shapes)
-        print("~"*20)
+        #render(width, height, shapes)
+        #print("~"*20)
 
 
         # loop through instructions
@@ -146,26 +158,26 @@ def part1(rows):
 
 
         # Try to move right/left
-        print("Jet of gas pushes rock", next_move)
+        #print(f"Jet of gas pushes {shapes[-1].at_rest_char} rock", next_move)
 
-        # TODO: make COLLISION_AT TAKE AN OFFSET
-        next_x = OPS[next_move](shapes[-1].x, 1) # Try Move left or right
-        if not out_of_bounds(shapes[-1].y, next_x, height, width, shapes[-1].offsets) and
-            not collision_at(shapes, shapes[-1].y, next_x, shape):
-                shapes[-1].x = next_x
+        next_offset = OFF[next_move]
+        if not out_of_bounds(height,width, shapes, (0, next_offset[1])) and not collision_at(shapes, next_offset):
+                shapes[-1].x += next_offset[1] 
         else:
-            print("but nothing happens")
+            pass
+            #print("but nothing happens")
 
         # check if hit bottom
-        next_y = shapes[-1].y + 1
-        if out_of_bounds(next_y, next_x, height, width, shapes[-1].offsets):
-            print("rock comes to rest")
+        next_offset = (1, next_offset[1]) 
+        if out_of_bounds(height, width, shapes, (next_offset[0],0)):
+            #print("rock comes to rest")
             # hit bottom dont move down
             shapes[-1].moving = False
             spawning = True
             rock += 1
+            continue
 
-        if collision_at(shapes, next_y, next_x, shape):
+        if collision_at(shapes, (next_offset[0], 0)):
             # Hit another Block dont move down
             shapes[-1].moving = False
             spawning = True
@@ -173,10 +185,9 @@ def part1(rows):
         else:
             # can move down
             shapes[-1].y += 1
-            print("rock falls one unit")
+            #print("rock falls one unit")
 
-    print("-"*15)
-    render(width, height, shapes)
+    #render(width, height, shapes)
 
     print(shapes[0], height, shapes[0].coords)