| ptjt255 |
08-20-2009 08:04 AM |
creating a deceleration zone
Hi,
I'm hoping someone can help me, I have created a left hand quad that if entered should force the joystick to decelerate to 0 without going off the screen, rather than the avatar colliding with it which is currently how it is set up. Any help would be really welcome - thanks.
Code:
import viz
import vizjoy
import viztask
import random
import math
from numpy import *
viz.go()
# Enable physics for collisions
viz.phys.enable()
# Set window to full size
viz.window.setSize(-1)
# Add a joystick and disable the mouse
joystick = vizjoy.add()
viz.mouse(viz.OFF)
viz.mouse.setTrap(viz.ON)
viz.mouse.setVisible(viz.OFF)
# Create rotating ball, scale it, position it and make it a collidable object
ball = viz.add('soccerball.ive', scale = [1,1,1], pos = (-1.5,0.5,0))
ball.collideBox()
ball.disable(viz.DYNAMICS)
ball.addAction(vizact.spin(0,1,0,-100))
ball.visible(viz.OFF)
# Create an avatar based on the gender of participant
choice = ['male', 'female']
select = viz.choose('Gender of participant?', choice)
if select == 0:
avatar = viz.add('vcc_male.cfg')
if select == 1:
avatar = viz.add('vcc_female.cfg')
avatar.setScale(0.2,0.2,0.2)
avatar.visible(viz.OFF)
avatar.collideBox()
avatar.disable(viz.DYNAMICS)
avatar.enable(viz.COLLIDE_NOTIFY)
# Create a target ball and link it to right hand of avatar
rHandBall = viz.add('soccerball.ive', scale = [0.01,0.01,0.01])
rHandBall.visible(viz.OFF)
rHandBall.collideBox()
rHandBall.disable(viz.DYNAMICS)
rHandBall.enable(viz.COLLIDE_NOTIFY)
rHandLink = viz.link(avatar.getBone('Bip01 R Hand'), rHandBall)
rHandLink.preTrans([0.05,-0.05,0])
# Create 'walls' around the screen and make them collidable
Leftquad = viz.addTexQuad()
pic = viz.addTexture('sky_negy.jpg')
Leftquad.texture(pic)
Leftquad.setScale(1.0,6,1)
Leftquad.setPosition(-2.5,0,0)
Leftquad.collideBox()
Leftquad.disable(viz.DYNAMICS)
Leftquad.enable(viz.COLLIDE_NOTIFY)
Rightquad = viz.addTexQuad()
Rightquad.setScale(1.0,6,1)
Rightquad.setPosition(3.0,0,0)
Rightquad.collideBox()
Rightquad.disable(viz.DYNAMICS)
Rightquad.enable(viz.COLLIDE_NOTIFY)
Bottomquad = viz.addTexQuad()
Bottomquad.setScale(6,1,1)
Bottomquad.setPosition(0,-1.5,0)
Bottomquad.collideBox()
Bottomquad.disable(viz.DYNAMICS)
Bottomquad.enable(viz.COLLIDE_NOTIFY)
Topquad = viz.addTexQuad()
Topquad.setScale(6,1,1)
Topquad.setPosition(0,3.5,0)
Topquad.collideBox()
Topquad.disable(viz.DYNAMICS)
Topquad.enable(viz.COLLIDE_NOTIFY)
# Set up 6 vertical positions in an array and put the ball in one position at a time randomly
objects = []
objects.append(ball)
pos = [[-1.5,0.0,0],[-1.5,0.5,0],[-1.5,1.0,0],[-1.5,1.5,0],[-1.5,2.0,0],[-1.5,2.5,0]]
def sceneOn():
global rand_pos, p,x_target,y_target
# Get random sample of positions
rand_pos = random.sample(pos,6)
# Apply objects to positions
for p,o in zip(rand_pos,objects):
o.setPosition(p)
y_target = p[1]
print 'Y Target Position: ', y_target
x_target = p[0]
print x_target
# Link the avatar to the joystick, define joystick velocity and parameters, track position and record time
# Defines collision parameters and avatar actions on collision
import time
# Variables
result = 0
tinc = 1/100
# Sets velocity of joystick - from avatar to target the distance is 3.5m
joyscale_x = 1.40 # scale max x joystick velocity to 1.125 m/s maximum (roughly the time it takes to cross a single lane of a road) - 4 seconds to cross 4.5 meters which is 1.5 seconds per meter
joyscale_y = -1.40 # scale max y joystick velocity to 1.125 m/s maximum (roughly the time it takes to cross a single lane of a road)
start_position = [2.0, 1.0,0]
def position_loop():
global result, x_prev, y_prev, x_velocity, y_velocity, ctime, ij, cframe, y_pos, x_pos, x, y, joy_position, i, select, p, ctime, pos_inc, start_position,elapsed_time,tinc
x_velocity = 0.0
y_velocity = 0.0
x_prev = start_position[0]
y_prev = start_position[1]
Start_tick = time.time()
cframe = 0
def mytimer(tinc):
global result, x_prev, y_prev, ctime, ij, cframe, y_pos, x_pos, x, y, joy_position, i, select, p, ctime, x_velocity, y_velocity, elapsed_time
# Set up joystick as velocity control
ctime = time.time() - Start_tick
cframe = cframe+1
x = x_prev + x_velocity/60; y = y_prev + y_velocity/60
avatar.setPosition(x,y)
joy_position = joystick.getPosition()
x_prev = x; y_prev = y;
x_velocity = joyscale_x*joy_position[0]; y_velocity = joyscale_y*joy_position[1]
elapsed_time = time.time() - Start_tick
# Set up screen actions based on result
def onCollideBegin(e):
global result
if e.obj1 is rHandBall:
if e.obj2 is ball:
print 'hit the target'
viz.killtimer(1)
result = 1
ball.color(viz.GREEN)
avatar.setScale(0.8,0.8,0.8)
avatar.lookat(10, 0, -40)
avatar.setPosition(0.0,0.0,0.0)
avatar.state(4)
return
avatar.setPosition(2.0, 1.0,0)
if e.obj1 is avatar:
if e.obj2 is Leftquad:
print 'hit the left wall'
viz.killtimer(1)
result = 2
ball.color(viz.RED)
avatar.setScale(0.8,0.8,0.8)
avatar.setPosition(-2.0,1.0,0)
avatar.lookat(10, 0, -40)
avatar.state(8)
if e.obj1 is avatar:
if e.obj2 is Rightquad:
print 'hit the right wall'
viz.killtimer(1)
result = 3
ball.color(viz.RED)
avatar.setScale(0.8,0.8,0.8)
avatar.setPosition(1.5,0.5,0)
avatar.lookat(-10, 0, -40)
avatar.state(8)
if e.obj1 is avatar:
if e.obj2 is Bottomquad:
print 'hit the bottom wall'
viz.killtimer(1)
result = 4
ball.color(viz.RED)
avatar.setScale(0.8,0.8,0.8)
avatar.setPosition(0.0,-0.5,0)
avatar.lookat(10, 0, -40)
avatar.state(8)
if e.obj1 is avatar:
if e.obj2 is Topquad:
print 'hit the top wall'
viz.killtimer(1)
result = 5
ball.color(viz.RED)
avatar.setScale(0.8,0.8,0.8)
avatar.setPosition(0,2.0,0)
avatar.lookat(10, 0, -40)
avatar.state(8)
if elapsed_time > 10.0:
print 'missed'
viz.killtimer(1)
result = 6
ball.color(viz.RED)
avatar.setScale(0.8,0.8,0.8)
avatar.lookat(10, 0, -40)
avatar.state(1)
viz.callback(viz.COLLIDE_BEGIN_EVENT,onCollideBegin)
#print 'trial:', i, 'time:', ctime, 'x Velocity:',x_velocity, 'y_velocity', y_velocity, 'x', x, 'y', y, 'Result:', result
viz.callback(viz.TIMER_EVENT, mytimer)
viz.starttimer(1,tinc,viz.FOREVER)
# Runs 10 trials
def run_trials():
global pos_inc, start_position, x_pos, y,elapsed_time, i, position, ball, result
total_reps = 12
for i in range(1,total_reps-1):
global pos_inc, start_position, x_pos, y,elapsed_time, position, ball, result
avatar.visible(viz.OFF)
rHandBall.visible(viz.OFF)
Ready = viz.ask('Are You Ready?')
avatar.setPosition(2.0, 1.0, 0)
avatar.setScale(0.2,0.2,0.2)
avatar.visible(viz.ON)
avatar.state(1)
avatar.lookat(-10, 0, -10)
yield viztask.waitTime(3.0)
sceneOn()
ball.color(viz.GRAY)
rHandBall.visible(viz.ON)
ball.visible(viz.ON)
avatar.state(2)
position_loop()
yield viztask.waitTime(5.0)
avatar.visible(viz.OFF); ball.visible(viz.OFF); rHandBall.visible(viz.OFF)
# Run the whole thing
viztask.schedule(run_trials())
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