import sdl

SW = 800

SH = 240

def test():

w = world()

print(w)

w.setGravity( vec3(0,-9.81,0) )

b = body( w )

m = mass()

m.setSphere( 2500.0, 0.05 )

b.setMass( m )

b.setPosition( vec3(SW/2,20,0) )

b.addTorque( vec3(10,0,0) )

b.setRotation( quat(0.5, 0.5, 0, 0) )

time = 0.0

dt = 0.3

while True:

sdl.clear( vec3(0,0,0) )

for e in sdl.poll():

if e["type"] == "KEYDOWN":

print("key:", e["key"])

if e["key"] == 80 or e["key"] == 113: ## left key

b.addForce( vec3(-50,0,0) )

elif e["key"] == 79 or e["key"] == 114: ## right key

b.addForce( vec3(50,0,0) )

w.step(dt)

v = b.getPosition()

if v[1] < -200:

b.addForce( vec3(0,200,0) )

x = v[0]

y = v[1]

sdl.draw( vec4(x,-int(y), 10,10), vec3(255,0,0) )

sdl.draw( vec4(0,220, SW,10), vec3(5,200,0) )

sdl.flip()

time += dt

sdl.delay(30)

def main():

sdl.initialize()

sdl.window( vec2(SW,SH) )

test()

main()