def raster_callback(line):
global xpos, ypos
# line 0: begin of frame
if line == 0:
tln.SetLayer(LAYER_FOREGROUND, tileset_horizon, tilemap_horizon)
tln.SetLayer(LAYER_BACKGROUND, tileset_horizon, tilemap_horizon)
tln.SetLayerPosition(LAYER_FOREGROUND, lerp(angle * 2, 0, 360, 0, 256),
24)
tln.SetLayerPosition(LAYER_BACKGROUND, lerp(angle, 0, 360, 0, 256), 0)
tln.ResetLayerMode(LAYER_BACKGROUND)
affine.angle = angle
rad = math.radians(angle)
xpos += (math.sin(rad) * speed)
ypos -= (math.cos(rad) * speed)
if line == 24:
tln.SetLayer(LAYER_BACKGROUND, tileset_track, tilemap_track)
tln.SetLayerPosition(LAYER_BACKGROUND, int(xpos), int(ypos))
tln.DisableLayer(LAYER_FOREGROUND)
if line >= 24:
scale = lerp(line, 24, HEIGHT, MIN_SCALE, MAX_SCALE)
affine.sx = scale
affine.sy = scale
tln.SetLayerTransform(LAYER_BACKGROUND, affine.angle, affine.dx,
affine.dy, affine.sx, affine.sy)
def Update():
global ypos
# calculate background scale factor
fgscale = scale
bgscale = lerp(scale, MIN_SCALE, MAX_SCALE, 0.75, 1.5)
# scale dependant lower clipping
maxy = 640 - (HEIGHT / scale)
if ypos > maxy:
ypos = maxy
# update position
bgypos = lerp(scale, MIN_SCALE, MAX_SCALE, 0, 80)
tln.SetLayerPosition(LAYER_FOREGROUND, int(xpos * 2), int(ypos))
tln.SetLayerPosition(LAYER_BACKGROUND, int(xpos), int(bgypos))
tln.SetLayerScaling(LAYER_FOREGROUND, fgscale, fgscale)
tln.SetLayerScaling(LAYER_BACKGROUND, bgscale, bgscale)
def raster_callback(line):
if line == 24:
tln.SetLayer(LAYER_BACKGROUND, tileset_track, tilemap_track)
tln.SetLayerPosition(LAYER_BACKGROUND, int(x), int(y))
tln.DisableLayer(LAYER_FOREGROUND)
if line >= 24:
scale = lerp(line, 24, HEIGHT, 0.2, 5.0)
affine.sx = scale
affine.sy = scale
tln.SetLayerTransform(LAYER_BACKGROUND, affine.angle, affine.dx,
affine.dy, affine.sx, affine.sy)
def raster_callback(line):
pos = -1
# start of frame
if line == 0:
global basepos
basepos += speed
pos_foreground = basepos * 3
tln.SetLayerPosition(LAYER_FOREGROUND, int(pos_foreground), 0)
pos_background[0] = basepos * 0.562
pos_background[1] = basepos * 0.437
pos_background[2] = basepos * 0.375
pos_background[3] = basepos * 0.625
pos_background[4] = basepos * 1.0
pos_background[5] = basepos * 2.0
pos = pos_background[0]
elif line == 32:
pos = pos_background[1]
elif line == 48:
pos = pos_background[2]
elif line == 64:
pos = pos_background[3]
elif line == 112:
pos = pos_background[4]
elif line >= 152:
pos = lerp(line, 152, 224, pos_background[4], pos_background[5])
if pos != -1:
tln.SetLayerPosition(LAYER_BACKGROUND, int(pos), 0)
if line == 0:
tln.SetBGColor(28, 0, 140)
elif line == 144:
tln.SetBGColor(0, 128, 238)
def raster_callback(line):
pos = -1
if line == 0:
pos = pos_background[0]
elif line == 32:
pos = pos_background[1]
elif line == 48:
pos = pos_background[2]
elif line == 64:
pos = pos_background[3]
elif line == 112:
pos = pos_background[4]
elif line >= 152:
pos = lerp(line, 152, 224, pos_background[4], pos_background[5])
if pos != -1:
tln.SetLayerPosition(LAYER_BACKGROUND, int(pos), 0)
if line == 0:
tln.SetBGColor(28, 0, 140)
elif line == 144:
tln.SetBGColor(0, 128, 238)
alpha += 2
if tln.GetInput(tln.INPUT_D) and alpha > 1:
alpha -= 2
# calculate scale factor from fixed point base
fgscale = scale / 100.0
bgscale = lerp(scale, MIN_SCALE, MAX_SCALE, 0.75, 1.5)
# scale dependant lower clipping
maxy = 640 - (HEIGHT * 100 / scale)
if ypos > maxy:
ypos = maxy
# update position
bgypos = lerp(scale, MIN_SCALE, MAX_SCALE, 0, 80)
tln.SetLayerPosition(LAYER_FOREGROUND, xpos * 2, ypos)
tln.SetLayerPosition(LAYER_BACKGROUND, xpos, bgypos)
tln.SetLayerScaling(LAYER_FOREGROUND, fgscale, fgscale)
tln.SetLayerScaling(LAYER_BACKGROUND, bgscale, bgscale)
# update transparency
if alpha < 255:
tln.SetLayerBlendMode(LAYER_FOREGROUND, tln.BLEND_MIX, alpha)
else:
tln.SetLayerBlendMode(LAYER_FOREGROUND, tln.BLEND_NONE, 0)
# render to the window
tln.DrawFrame(frame)
frame += 1
tln.DeleteWindow()
if speed < 0.0:
speed = 0.0
if tln.GetInput(tln.INPUT_LEFT):
speed -= 0.02
if speed < -1.0:
speed = -1.0
elif speed < 0.0:
speed += 0.02
if speed > 0.0:
speed = 0.0
# scroll
basepos += speed
pos_foreground = basepos * 3
tln.SetLayerPosition(LAYER_FOREGROUND, int(pos_foreground), 0)
pos_background[0] = basepos * 0.562
pos_background[1] = basepos * 0.437
pos_background[2] = basepos * 0.375
pos_background[3] = basepos * 0.625
pos_background[4] = basepos * 1.0
pos_background[5] = basepos * 2.0
tln.DrawFrame(frame)
frame += 1
tln.DeleteWindow()
tln.Deinit()
# load resources
tileset_horizon = tln.LoadTileset("track1_bg.tsx")
tilemap_horizon = tln.LoadTilemap("track1_bg.tmx", "Layer 1")
tileset_track = tln.LoadTileset("track1.tsx")
tilemap_track = tln.LoadTilemap("track1.tmx", "Layer 1")
# set raster callback
CB_FUNC_TYPE = CFUNCTYPE(None, c_int)
cb_func = CB_FUNC_TYPE(raster_callback)
tln.SetRasterCallback(cb_func)
# main loop
while tln.ProcessWindow():
tln.SetLayer(LAYER_FOREGROUND, tileset_horizon, tilemap_horizon)
tln.SetLayer(LAYER_BACKGROUND, tileset_horizon, tilemap_horizon)
tln.SetLayerPosition(LAYER_FOREGROUND, lerp(angle * 2, 0, 360, 0, 256), 24)
tln.SetLayerPosition(LAYER_BACKGROUND, lerp(angle, 0, 360, 0, 256), 0)
tln.ResetLayerMode(LAYER_BACKGROUND)
# input
if tln.GetInput(tln.INPUT_LEFT):
angle -= 2
elif tln.GetInput(tln.INPUT_RIGHT):
angle += 2
if tln.GetInput(tln.INPUT_UP):
s += a
if s > 2:
s = 2
elif s >= a:
s -= a