penguin86/python-sdl-racing-sim
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Working curves

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Daniele Verducci (Slimpenguin) 2023-01-18 08:55:29 +01:00
parent ea1fba23ad
commit e1fa312f99
1 changed files with 25 additions and 12 deletions
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racing-sim.py
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@ -36,23 +36,29 @@ KERB_COLOR_1 = [255,0,0]
KERB_COLOR_2 = [255,255,255] KERB_COLOR_2 = [255,255,255]
ROAD_COLOR = [127,127,127] ROAD_COLOR = [127,127,127]
KERB_WIDTH = 0.05 KERB_WIDTH = 0.05
PLAYER_MAX_SPEED = 1.0 PLAYER_MAX_SPEED = 2.0
PLAYER_SPEED_INCREMENT = 0.5 PLAYER_SPEED_INCREMENT = 0.5
TRACK_SECTIONS_INTERPOLATION_LENGTH = 2.0
# Track: array of sections. Section: [curvature, length] # Track: array of sections. Section: [curvature, length]
TRACK = [ TRACK = [
{"curv": 0.0, "dist": 2}, {"curv": 0.0, "dist": 1},
{"curv": 1.0, "dist": 2}, {"curv": 1.0, "dist": 5},
{"curv": 0.0, "dist": 2}, {"curv": -1.0, "dist": 5},
{"curv": 1.0, "dist": 2}, {"curv": 0.0, "dist": 1},
{"curv": 0.0, "dist": 2}, {"curv": -0.3, "dist": 4},
{"curv": 1.0, "dist": 2}, {"curv": 3.3, "dist": 4},
{"curv": 0.0, "dist": 2},
] ]
class Main: class Main:
def __init__(self): def __init__(self):
# Check data
for section in TRACK:
if section["curv"] != 0.0 and section["dist"] < TRACK_SECTIONS_INTERPOLATION_LENGTH * 2:
print("Track section cannot be interpolated!", section)
exit(1)
# Print instructions # Print instructions
print('RACING SIMULATOR by penguin86\n\nMovement: up, down, left, right\n\nFPS:') print('RACING SIMULATOR by penguin86\n\nMovement: up, down, left, right\n\nFPS:')
@ -143,10 +149,17 @@ class Main:
# Calculate road center based on section # Calculate road center based on section
distanceDrivenInThisSection = self.distance - trackSectionsSumDist + currentSection["dist"] distanceDrivenInThisSection = self.distance - trackSectionsSumDist + currentSection["dist"]
interpolation = max(min(distanceDrivenInThisSection / (section["dist"] / 4), 1.0), 0.01) # Range 0.01 - 1.0 if distanceDrivenInThisSection < TRACK_SECTIONS_INTERPOLATION_LENGTH:
self.interpolatedRoadCurvature = (currentSection["curv"] * interpolation + self.interpolatedRoadCurvature * (1 - interpolation)) / 2 # First part: interpolates from straight to current section curvature value
print([sectionNo, self.interpolatedRoadCurvature, currentSection["curv"], interpolation]) self.interpolatedRoadCurvature = currentSection["curv"] * (distanceDrivenInThisSection / TRACK_SECTIONS_INTERPOLATION_LENGTH)
#self.interpolatedRoadCurvature = (self.interpolatedRoadCurvature + currentSection["curv"]) / 2 print('enter', (distanceDrivenInThisSection / TRACK_SECTIONS_INTERPOLATION_LENGTH))
elif distanceDrivenInThisSection > currentSection["dist"] - TRACK_SECTIONS_INTERPOLATION_LENGTH:
# Last part: interpolates from current section curvature value to straight
delta = currentSection["dist"] - TRACK_SECTIONS_INTERPOLATION_LENGTH
distanceDrivenInThisPart = distanceDrivenInThisSection - delta
self.interpolatedRoadCurvature = currentSection["curv"] * (1 - (distanceDrivenInThisPart / TRACK_SECTIONS_INTERPOLATION_LENGTH))
#print([sectionNo, 'LAST', self.interpolatedRoadCurvature, currentSection["curv"]])
print(['exit', ((distanceDrivenInThisPart / TRACK_SECTIONS_INTERPOLATION_LENGTH)), delta, distanceDrivenInThisPart, distanceDrivenInThisSection])
# Draw road # Draw road
for y in range(int(RENDER_HEIGHT/2), RENDER_HEIGHT): for y in range(int(RENDER_HEIGHT/2), RENDER_HEIGHT):