这是用C语言OpenGL库和GLUT库写的青蛙跳远小游戏，主要是学习图形碰撞，检测碰撞。Using C(OpenGL and GLUT) to simulate a water surface using sine waves, and a frog can be controled by players. The frog can jump and turn direction. Frog will die if jumping into water.
- left/right: Frog jump angle (0 - 180)
- up/down: Frog jump magnitude (0 - 0.25)
- f: Toggle filled/wireframe rendering
- g: Toggle animation on/off
- o: Toggle OSD on/off
- r: Respawn
- +(=)/-: Double/halve wave tesselation
- ' ' (space): From jump
- q/Esc: Quit the program
