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Closes #619
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import pytest | ||
# Skip these tests if we can't import bullet. | ||
bullet = pytest.importorskip("panda3d.bullet") | ||
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from panda3d.bullet import BulletWorld, BulletRigidBodyNode, ZUp | ||
from panda3d.bullet import BulletHeightfieldShape, BulletSphereShape | ||
from panda3d.core import NodePath, PNMImage | ||
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def make_node(name, BulletShape, *args): | ||
# Returns a BulletRigidBodyNode for the given shape | ||
shape = BulletShape(*args) | ||
node = BulletRigidBodyNode(name) | ||
node.add_shape(shape) | ||
return node | ||
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def test_sphere_into_heightfield(): | ||
root = NodePath("root") | ||
world = BulletWorld() | ||
# Create PNMImage to construct Heightfield with | ||
img = PNMImage(10, 10, 1) | ||
img.fill_val(255) | ||
# Make our nodes | ||
heightfield = make_node("Heightfield", BulletHeightfieldShape, img, 1, ZUp) | ||
sphere = make_node("Sphere", BulletSphereShape, 1) | ||
# Attach to world | ||
np1 = root.attach_new_node(sphere) | ||
np1.set_pos(0, 0, 1) | ||
world.attach(sphere) | ||
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np2 = root.attach_new_node(heightfield) | ||
np2.set_pos(0, 0, 0) | ||
world.attach(heightfield) | ||
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assert world.get_num_rigid_bodies() == 2 | ||
test = world.contact_test_pair(sphere, heightfield) | ||
assert test.get_num_contacts() > 0 | ||
assert test.get_contact(0).get_node0() == sphere | ||
assert test.get_contact(0).get_node1() == heightfield | ||
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# Increment sphere's Z coordinate, no longer colliding | ||
np1.set_pos(0, 0, 2) | ||
test = world.contact_test_pair(sphere, heightfield) | ||
assert test.get_num_contacts() == 0 |