void reshape(int x, int y);
void keyb(unsigned char key, int x, int y);
void keyb_up(unsigned char key, int x, int y);
+void mouse(int bn, int st, int x, int y);
+void motion(int x, int y);
int win_width, win_height;
#define FB_H 480
unsigned int fb[FB_W * FB_H];
+int mouse_x, mouse_y, mwarp, mbstate[3];
+
unsigned int input;
-int32_t pos[2], angle;// = 0x4000;
+int32_t pos[2], angle;
struct voxscape *vox;
glutCreateWindow("voxel landscape test");
glutDisplayFunc(display);
+ glutIdleFunc(idle);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyb);
glutKeyboardUpFunc(keyb_up);
- glutIdleFunc(idle);
+ glutMouseFunc(mouse);
+ glutMotionFunc(motion);
if(init() == -1) {
return 1;
void update(void)
{
- if(input & INP_FWD) pos[1] += WALK_SPEED;
- if(input & INP_BACK) pos[1] -= WALK_SPEED;
- if(input & INP_LEFT) pos[0] -= WALK_SPEED;
- if(input & INP_RIGHT) pos[0] += WALK_SPEED;
+ int32_t fwd[2], right[2];
if(input & INP_LTURN) angle += TURN_SPEED;
if(input & INP_RTURN) angle -= TURN_SPEED;
+ fwd[0] = -SIN(angle);
+ fwd[1] = COS(angle);
+ right[0] = fwd[1];
+ right[1] = -fwd[0];
+
+ if(input & INP_FWD) {
+ pos[0] += fwd[0];
+ pos[1] += fwd[1];
+ }
+ if(input & INP_BACK) {
+ pos[0] -= fwd[0];
+ pos[1] -= fwd[1];
+ }
+ if(input & INP_RIGHT) {
+ pos[0] += right[0];
+ pos[1] += right[1];
+ }
+ if(input & INP_LEFT) {
+ pos[0] -= right[0];
+ pos[1] -= right[1];
+ }
+
vox_view(vox, pos[0], pos[1], angle);
}
glutSwapBuffers();
assert(glGetError() == GL_NO_ERROR);
+
+ if(mbstate[0]) {
+ mwarp = 1;
+ glutWarpPointer(win_width / 2, win_height / 2);
+ }
}
void idle(void)
break;
}
}
+
+void mouse(int bn, int st, int x, int y)
+{
+ int bidx = bn - GLUT_LEFT_BUTTON;
+
+ if(bidx < 3) {
+ mbstate[bidx] = st == GLUT_DOWN;
+ }
+ mouse_x = x;
+ mouse_y = y;
+
+ if(st == GLUT_DOWN) {
+ glutSetCursor(GLUT_CURSOR_NONE);
+ } else {
+ glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
+ }
+}
+
+void motion(int x, int y)
+{
+ int dx = x - mouse_x;
+ int dy = y - mouse_y;
+ mouse_x = x;
+ mouse_y = y;
+
+ if(mwarp) {
+ mwarp = 0;
+ return;
+ }
+ if(!(dx | dy)) return;
+
+ if(mbstate[0]) {
+ angle -= dx << 6;
+ }
+}