def update(self, dt, keyStateMap):
info = self.terrain.getInfoAt(self.position)
# Select max speed based on material
maxSpeed = self.maxSpeedRoad if info.material == TerrainInfo.M_Road else self.maxSpeedRough
targetVel = vec3(0.0)
if keyStateMap["UP"]:
targetVel = self.heading * maxSpeed
if keyStateMap["DOWN"]:
targetVel = self.heading * -maxSpeed
# linearly interpolate towards the target velocity - this means it is tied to the frame rate, which kind of is bad.
self.velocity = lu.mix(self.velocity, targetVel, 0.01)
self.speed = lu.length(self.velocity)
rotationMat = lu.Mat4()
if keyStateMap["LEFT"]:
rotationMat = lu.make_rotation_z(dt * self.angvel)
if keyStateMap["RIGHT"]:
rotationMat = lu.make_rotation_z(dt * -self.angvel)
self.heading = lu.Mat3(rotationMat) * self.heading
# get height of ground at this point.
self.position += self.velocity * dt
# TODO 1.1: After the terrain height is correct, uncomment this line to make the racer follow the ground height
self.position[2] = lu.mix(self.position[2], info.height + self.zOffset,
0.1)
def render(self, view, renderingSystem):
getInfo = self.terrain.getInfoAt(self.position)
self.position[2] = lu.mix(self.position[2], getInfo.height - self.zOffset,\
1)
rotation = lu.make_rotation_z(self.randRot)
modelToWorldTransform = lu.make_mat4_from_zAxis(self.position, self.heading, \
vec3(0,0,1))
renderingSystem.drawObjModel(self.model,
rotation * modelToWorldTransform, view)
def sampleKeyFrames(t, kfs):
# 1. find correct interval
if t <= kfs[0][0]:
return kfs[0][1]
if t >= kfs[-1][0]:
return kfs[-1][1]
for i1 in range(1, len(kfs)):
if t < kfs[i1][0]:
i0 = i1 - 1
t0 = kfs[i0][0]
t1 = kfs[i1][0]
# linear interpolation from one to the other
return lu.mix(kfs[i0][1], kfs[i1][1], (t - t0) / (t1 - t0))
# we should not get here, unless the key values are malformed (i.e., not strictly increasing)
assert False
# but if we do, we return a value that is obviously no good (rahter than say zero that might pass unnoticed for much longer)
return None
def update(self):
info = self.terrain.getInfoAt(self.position)
self.position[2] = lu.mix(self.position[2], info.height + self.zOffset,
0.1)