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-rw-r--r--elements/add_objects.py52
1 files changed, 29 insertions, 23 deletions
diff --git a/elements/add_objects.py b/elements/add_objects.py
index 6362b3f..eb396d8 100644
--- a/elements/add_objects.py
+++ b/elements/add_objects.py
@@ -444,21 +444,21 @@ class Add:
# Define the body
x, y = c = tools_poly.calc_center(vertices_orig_reduced)
- return self.poly((x,y), vertices, dynamic, density, restitution, friction)
-
+ return self.poly((x,y), vertices, dynamic, density, restitution, friction)
+
+ def to_b2vec(self,pt):
+ pt = self.parent.to_world(pt)
+ ptx, pty = pt
+ ptx /= self.parent.ppm
+ pty /= self.parent.ppm
+ pt = box2d.b2Vec2(ptx, pty)
+ return pt
# Alex Levenson's added joint methods:
def distanceJoint(self,b1,b2,p1,p2):
# Distance Joint
- p1 = self.parent.to_world(p1)
- p2 = self.parent.to_world(p2)
- p1x, p1y = p1
- p2x, p2y = p2
- p1x /= self.parent.ppm
- p1y /= self.parent.ppm
- p2x /= self.parent.ppm
- p2y /= self.parent.ppm
- p1 = box2d.b2Vec2(p1x, p1y)
- p2 = box2d.b2Vec2(p2x, p2y)
+ p1 = self.to_b2vec(p1)
+ p2 = self.to_b2vec(p2)
+
jointDef = box2d.b2DistanceJointDef()
jointDef.Initialize(b1, b2, p1, p2)
jointDef.collideConnected = True
@@ -469,11 +469,7 @@ class Add:
# Fixed Joint to the Background, don't assume the center of the body
b1 = self.parent.world.GetGroundBody()
b2 = args[0]
- p1 = self.parent.to_world(args[1])
- p1x, p1y = p1
- p1x /= self.parent.ppm
- p1y /= self.parent.ppm
- p1 = box2d.b2Vec2(p1x, p1y)
+ p1 = self.to_b2vec(args[1])
jointDef = box2d.b2RevoluteJointDef()
jointDef.Initialize(b1, b2, p1)
@@ -492,17 +488,14 @@ class Add:
def revoluteJoint(self,b1,b2,p1):
# revolute joint between to bodies
- p1 = self.parent.to_world(p1)
- p1x, p1y = p1
- p1x /= self.parent.ppm
- p1y /= self.parent.ppm
- p1 = box2d.b2Vec2(p1x, p1y)
+ p1 = self.to_b2vec(p1)
jointDef = box2d.b2RevoluteJointDef()
jointDef.Initialize(b1, b2, p1)
self.parent.world.CreateJoint(jointDef)
+ # prismatic joint + pully not fully functional at this point
def prismaticJoint(self,b1,b2,Axis=(0.0,1.0),lower=-2,upper=2):
jointDef = box2d.b2PrismaticJointDef()
worldAxis = box2d.b2Vec2(Axis[0],Axis[1])
@@ -512,7 +505,20 @@ class Add:
jointDef.enableLimit = True
self.parent.world.CreateJoint(jointDef)
-
+
+ def pully(self,b1,b2,p1,p2,g1,g2,ratio=1.0,maxLength1=5,maxLength2=5):
+ p1 = self.to_b2vec(p1)
+ p2 = self.to_b2vec(p2)
+ g1 = self.to_b2vec(g1)
+ g2 = self.to_b2vec(g2)
+
+ jointDef = box2d.b2PulleyJointDef()
+ jointDef.Initialize(b1, b2, g1, g2, p1, p2, ratio)
+ jointDef.maxLength1 = maxLength1
+ jointDef.maxLength2 = maxLength2
+
+ self.parent.world.CreateJoint(jointDef)
+
def joint(self, *args):
print "* Add Joint:", args