[NXC] 彈跳線

  本程式出處: John Hansen的 Robotics in C 一個有趣的彈跳線程式，跟彈跳球不一樣的地方是這邊是用線在彈跳且用了矩陣，歡迎大家指教~~~ 也歡迎大家直接下載到NXT來看看唷! 宗翰老師的彈跳球1.1 , 彈跳球2.0 =================================== #define SCREEN_WIDTH  100 #define SCREEN_HEIGHT 64 #define TAIL_LENGTH   20 int xDir = 1; int yDir = 1; int X[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,}; int Y[] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,}; // move the elements in the tail void moveTail() { for (int i = TAIL_LENGTH - 1; i > 0; i--) { X[i] = X[i-1]; Y[i] = Y[i-1]; } } //move the X[0] and Y[0] to a new position, keeping them on the screen void move() { X[0] += xDir; Y[0] += yDir; if( (X[0] < 2 ) || ( X[0] >= SCREEN_WIDTH-1) ) xDir *= -1; if( (Y[0] < 2 ) || ( Y[0] >= SCREEN_HEIGHT-1) ) yDir *= -1; } task main() { while (true) { //move each element in the array out one slot so that the value in slot 0 goes to slot 1,etc. moveTail(); //move the 0 slot in the array to its new position move(); ClearScreen(); //draw the array in reverse order for ( int i = TAIL_LENGTH - 1; i > 0; i--) PointOut( X[i], Y[i]); } }