Move to our own vector module instead of Panda3D

bot.py

@@ -24,7 +24,7 @@ from minecraft.networking.packets import Packet, clientbound, serverbound
 from protocol.managers import DataManager, ChunksManager, ChatManager, ChunkNotLoadedException
 
 from munch import Munch
-from panda3d.core import LPoint3f, LVector3f
+from vector import Point3D, Vector3D
 
 import game
 importlib.reload(game)
@@ -41,9 +41,9 @@ importlib.reload(mcdata)
 
 last_tick = time.time()
 
-PITCH_ANGLE_DIR = LVector3f(x=0, y=1, z=0)
-YAW_ANGLE_DIR = LVector3f(x=0, y=0, z=-1)
-YAW_ANGLE_REF = LVector3f(x=0, y=1, z=0)
+PITCH_ANGLE_DIR = Vector3D((0, 1, 0))
+YAW_ANGLE_DIR = Vector3D((0, 0, -1))
+YAW_ANGLE_REF = Vector3D((0, 1, 0))
 YAW_LOOK_AHEAD = 4
 
 
@@ -105,7 +105,7 @@ def tick(global_state):
     ########## player physics ##########
 
     if g.path and len(g.path):
-        target = LPoint3f(g.path[0])
+        target = Point3D(g.path[0])
         target.x += 0.5
         target.z += 0.5
 
@@ -158,11 +158,11 @@ def tick(global_state):
         g.y_a = 0
 
     if g.look_at:
-        look_at = LPoint3f(g.look_at)
+        look_at = Point3D(g.look_at)
     elif g.path and len(g.path) > YAW_LOOK_AHEAD:
-        look_at = LPoint3f(g.path[YAW_LOOK_AHEAD])
+        look_at = Point3D(g.path[YAW_LOOK_AHEAD])
     elif g.path and len(g.path):
-        look_at = LPoint3f(g.path[-1])
+        look_at = Point3D(g.path[-1])
     else:
         look_at = None
 
@@ -180,6 +180,7 @@ def tick(global_state):
         # remove vertical component for yaw calculation
         look_at_d.y = 0
 
+        if look_at_d.length() > 0.6:
             target_yaw = look_at_d.normalized().signedAngleDeg(other=YAW_ANGLE_DIR, ref=YAW_ANGLE_REF)
             target_yaw_d = target_yaw - g.yaw
             target_yaw_d = (target_yaw_d + 180) % 360 - 180

game.py

@@ -8,7 +8,7 @@ from itertools import count
 from munch import Munch
 from copy import copy
 
-from panda3d.core import LPoint3f
+from vector import Point3D
 
 from minecraft.networking.packets import Packet, clientbound, serverbound
 from minecraft.networking.types import BlockFace
@@ -392,7 +392,7 @@ class Game:
     def handle_block_change(self, packet):
         if packet.block_state_id == blocks.SOUL_TORCH:
             try:
-                self.g.goal = LPoint3f(x=packet.location[0], y=packet.location[1], z=packet.location[2])
+                self.g.goal = Point3D((packet.location[0], packet.location[1], packet.location[2]))
                 print('new waypoint:', self.g.goal)
 
                 start = time.time()
@@ -419,7 +419,7 @@ class Game:
 
     def handle_position_and_look(self, packet):
         print(packet)
-        p = LPoint3f(x=packet.x, y=packet.y, z=packet.z)
+        p = Point3D((packet.x, packet.y, packet.z))
         self.g.pos = p
 
         confirm_packet = serverbound.play.TeleportConfirmPacket()

vector.py

@@ -0,0 +1,123 @@
+import math
+
+class Vector3D:
+    def __init__(self, vector):
+        self.x = vector[0]
+        self.y = vector[1]
+        self.z = vector[2]
+
+    @property
+    def xz(self):
+        return Vector3D((self.x, 0, self.z))
+
+    def tuple(self):
+        return (self.x, self.y, self.z)
+
+    def __getitem__(self, key):
+        return self.tuple()[key]
+
+    def length(self):
+        return math.hypot(self.x, self.y, self.z)
+
+    def normalized(self):
+        x = self.x / self.length()
+        y = self.y / self.length()
+        z = self.z / self.length()
+        return Vector3D((x, y, z))
+
+    def dot(self, other):
+        return self.x * other.x + self.y * other.y + self.z * other.z
+
+    def cross(self, other):
+        a1, a2, a3 = self.tuple()
+        b1, b2, b3 = other.tuple()
+        return Vector3D((a2*b3-a3*b2, a3*b1-a1*b3, a1*b2-a2*b1))
+
+    def angleDeg(self, other):
+        ratio = self.dot(other) / (self.length() * other.length())
+        rads = math.acos(ratio)
+        return math.degrees(rads)
+
+    def signedAngleDeg(self, other, ref):
+        angle1 = self.angleDeg(other)
+        cross = self.cross(ref)
+        angle2 = other.angleDeg(cross)
+        if angle2 < 90:
+            return -angle1
+        else:
+            return angle1
+
+    def __repr__(self):
+        return 'Vector3D(x={}, y={}, z={})'.format(self.x, self.y, self.z)
+    def __str__(self):
+        return '[{}, {}, {}]'.format(self.x, self.y, self.z)
+
+class Point3D:
+    def __init__(self, point):
+        self.x = point[0]
+        self.y = point[1]
+        self.z = point[2]
+
+    def __sub__(self, other):
+        #x = other.x - self.x
+        #y = other.y - self.y
+        #z = other.z - self.z
+        x = self.x - other.x
+        y = self.y - other.y
+        z = self.z - other.z
+        return Vector3D((x, y, z))
+
+    def tuple(self):
+        return (self.x, self.y, self.z)
+
+    def __getitem__(self, key):
+        return self.tuple()[key]
+
+    def __repr__(self):
+        return 'Point3D(x={}, y={}, z={})'.format(self.x, self.y, self.z)
+    def __str__(self):
+        return '({}, {}, {})'.format(self.x, self.y, self.z)
+
+if __name__ == '__main__':
+    # test to make sure our Vector module is the same as Panda3D
+
+    from panda3d.core import LPoint3f, LVector3f
+    import random
+
+    pPITCH_ANGLE_DIR = LVector3f(x=0, y=1, z=0)
+    pYAW_ANGLE_DIR = LVector3f(x=0, y=0, z=-1)
+    pYAW_ANGLE_REF = LVector3f(x=0, y=1, z=0)
+
+    PITCH_ANGLE_DIR = Vector3D((0, 1, 0))
+    YAW_ANGLE_DIR = Vector3D((0, 0, -1))
+    YAW_ANGLE_REF = Vector3D((0, 1, 0))
+
+    for _ in range(1000):
+        r = lambda: random.uniform(-10, 10)
+        a, b, c = r(), r(), r()
+        plook_at_d = LVector3f(x=a, y=b, z=c)
+        look_at_d = Vector3D((a, b, c))
+
+        ptarget_pitch = plook_at_d.normalized().angleDeg(pPITCH_ANGLE_DIR)
+        target_pitch = look_at_d.normalized().angleDeg(PITCH_ANGLE_DIR)
+
+        if round(ptarget_pitch) != round(target_pitch):
+            print('mismatch:', ptarget_pitch, target_pitch)
+            break
+    else:  # for
+        print('no mismatches')
+
+    for _ in range(1000):
+        r = lambda: random.uniform(-10, 10)
+        a, b, c = r(), r(), r()
+        plook_at_d = LVector3f(x=a, y=b, z=c)
+        look_at_d = Vector3D((a, b, c))
+
+        ptarget_yaw = plook_at_d.normalized().signedAngleDeg(other=pYAW_ANGLE_DIR, ref=pYAW_ANGLE_REF)
+        target_yaw = look_at_d.normalized().signedAngleDeg(other=YAW_ANGLE_DIR, ref=YAW_ANGLE_REF)
+
+        if round(ptarget_yaw) != round(target_yaw):
+            print('mismatch:', ptarget_yaw, target_yaw)
+            break
+    else:  # for
+        print('no mismatches')