今回はプログラミング言語の「Python」を使って作成しました。
下記の本に収録されている物理エンジン「Tiny2D」を使って物理演算をやってみました。
■ プログラム
import traceback
try:
import sys
from random import randint
import pygame
from pygame.locals import QUIT, Rect, KEYDOWN, K_LEFT, K_RIGHT, K_UP, K_DOWN
from tiny_2d import Engine, RectangleEntity, CircleEntity,\
LineEntity, SHAPE_CIRCLE, SHAPE_RECTANGLE, SHAPE_LINE
pygame.init()
SURFACE = pygame.display.set_mode([550, 600])
FPSCLOCK = pygame.time.Clock()
def main():
""" main routine """
colors = [(255, 0, 0), (255, 165, 0), (242, 242, 0),
(0, 128, 0), (128, 0, 128), (0, 0, 250)]
colors02 = [(255, 255, 255)]
engine = Engine(0, 0, 600, 800, 0, 9.8)
rect = RectangleEntity(205, 500, 150, 10)
rect.color = (255, 255, 255)
engine.entities.append(rect)
for xpos in range(7):
for ypos in range(3):
circle = CircleEntity(xpos * 60 + 100, ypos * 60 + 100, 5, True)
circle.color = colors02[0]
engine.entities.append(circle)
for _ in range(80):
circle = CircleEntity(randint(0, 400) + 50, randint(0, 200), 10, False)
circle.color = colors[randint(0, 5)]
circle.velocity.xpos = randint(0, 10) - 5
circle.velocity.ypos = randint(0, 10) - 5
engine.entities.append(circle)
pygame.key.set_repeat(5, 5)
#----------------------------------------------------
# ループ処理
#----------------------------------------------------
while True:
for event in pygame.event.get():
if event.type == QUIT:
pygame.quit()
sys.exit()
elif event.type == KEYDOWN:
if event.key == K_UP:
for entity in engine.entities:
if entity.shape == SHAPE_RECTANGLE:
entity.ypos -= 1
if event.key == K_DOWN:
for entity in engine.entities:
if entity.shape == SHAPE_RECTANGLE:
entity.ypos += 1
if event.key == K_LEFT:
for entity in engine.entities:
if entity.shape == SHAPE_RECTANGLE:
entity.xpos -= 1
if event.key == K_RIGHT:
for entity in engine.entities:
if entity.shape == SHAPE_RECTANGLE:
entity.xpos += 1
engine.step(0.01)
""" 描画 """
SURFACE.fill((0, 0, 0))
for entity in engine.entities:
if entity.shape == SHAPE_RECTANGLE:
rect = Rect(entity.xpos, entity.ypos, entity.width, entity.height)
pygame.draw.rect(SURFACE, entity.color, rect)
elif entity.shape == SHAPE_CIRCLE:
pos = (int(entity.xpos), int(entity.ypos))
pygame.draw.circle(SURFACE, entity.color, pos, entity.radius)
elif entity.shape == SHAPE_LINE:
pos0 = (int(entity.pos0[0]), int(entity.pos0[1]))
pos1 = (int(entity.pos1[0]), int(entity.pos1[1]))
pygame.draw.line(SURFACE, entity.color, pos0, pos1, width=10)
pygame.display.update()
FPSCLOCK.tick(60)
if __name__ == '__main__':
main()
except Exception as e:
print("エラー情報\n" + traceback.format_exc())
input()
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■ 参考書
「Pythonゲームプログラミング 知っておきたい数学と物理の基本」
■ ゲーム用ライブラリ
「Pygame」
■ プログラミング言語
