cannon.c
951 Bytes
#include "primlib.h"
#include <stdlib.h>
#include <unistd.h>
int main(int argc, char *argv[]) {
if (gfx_init())
exit(3);
double angle = 90.0 * (M_PI/180.0);
while(1)
{
double delta_angle= 2.0 * (M_PI/180.0);
int x1 = 150 * cos(angle-delta_angle);
int y1 = 150 * sin(angle-delta_angle);
int x2 = 150 * cos(angle+delta_angle);
int y2 = 150 * sin(angle+delta_angle);
gfx_filledRect(0, 0, gfx_screenWidth() - 1, gfx_screenHeight() - 1, BLUE);
gfx_filledCircle(gfx_screenWidth() / 2, gfx_screenHeight(), 100, YELLOW);
gfx_filledTriangle(gfx_screenWidth() / 2, gfx_screenHeight() , gfx_screenWidth() / 2 + x1, gfx_screenHeight() - y1,
gfx_screenWidth() / 2 + x2, gfx_screenHeight() - y2, YELLOW);
gfx_updateScreen();
int key=gfx_getkey();
if (key == SDLK_RIGHT)
angle -= 1.0 * (M_PI/180.0);
if (key == SDLK_LEFT)
angle += 1.0 * (M_PI/180.0);
};
return 0;
}