def shell_will_hit(self, shell, target, factor=1):
"""
Returns True if shell will hit rectangular object
"""
b = shell.angle
e = Vector(1, 0)
q = e.rotate(b)
center = Vector(target.x - shell.x, target.y - shell.y)
if center.scalar_product(q) < 0:
return False
a = target.angle
c1 = center + Vector(target.width / 2 * factor,
target.height / 2 * factor).rotate(a)
c2 = center + Vector(-target.width / 2 * factor,
target.height / 2 * factor).rotate(a)
c3 = center + Vector(-target.width / 2 * factor,
-target.height / 2 * factor).rotate(a)
c4 = center + Vector(target.width / 2 * factor,
-target.height / 2 * factor).rotate(a)
if sign(c1.cross_product(q)) == sign(q.cross_product(c3)):
#print("TEST", c1, c2, c3, c4, q)
return True
if sign(c2.cross_product(q)) == sign(q.cross_product(c4)):
#print("TEST", c1, c2, c3, c4, q)
return True
return False
def shell_will_hit(self, shell, target, factor=1):
"""
Returns True if shell will hit rectangular object
"""
b = shell.angle
e = Vector(1, 0)
q = e.rotate(b)
center = Vector(target.x - shell.x, target.y - shell.y)
if center.scalar_product(q) < 0:
return False
a = target.angle
c1 = center + Vector(target.width/2 * factor, target.height/2 * factor).rotate(a)
c2 = center + Vector(- target.width/2 * factor, target.height/2 * factor).rotate(a)
c3 = center + Vector(- target.width/2 * factor, - target.height/2 * factor).rotate(a)
c4 = center + Vector(target.width/2 * factor, - target.height/2 * factor).rotate(a)
if sign(c1.cross_product(q)) == sign(q.cross_product(c3)):
#print("TEST", c1, c2, c3, c4, q)
return True
if sign(c2.cross_product(q)) == sign(q.cross_product(c4)):
#print("TEST", c1, c2, c3, c4, q)
return True
return False
def vector_is_intersecting_object(self, p, d, target, factor=1):
center = Vector(target.x - p.x, target.y - p.y)
if center.scalar_product(d) < 0:
return False
a = target.angle
w, h = target.width / 2 * factor, target.height / 2 * factor
c1 = center + Vector(w, h).rotate(a)
c2 = center + Vector(-w, h).rotate(a)
c3 = center + Vector(-w, -h).rotate(a)
c4 = center + Vector(w, -h).rotate(a)
if sign(c1.cross_product(d)) == sign(d.cross_product(c3)):
return True
if sign(c2.cross_product(d)) == sign(d.cross_product(c4)):
return True
return False
def vector_is_intersecting_object(self, p, d, target, factor=1):
center = Vector(target.x - p.x, target.y - p.y)
if center.scalar_product(d) < 0:
return False
a = target.angle
w, h = target.width/2 * factor, target.height/2 * factor
c1 = center + Vector(w ,h).rotate(a)
c2 = center + Vector(- w, h).rotate(a)
c3 = center + Vector(- w, - h).rotate(a)
c4 = center + Vector(w, - h).rotate(a)
if sign(c1.cross_product(d)) == sign(d.cross_product(c3)):
return True
if sign(c2.cross_product(d)) == sign(d.cross_product(c4)):
return True
return False
