1 #include <stdio.h>

2 #include <math.h>

3 #include "opengl.h"

4 #include "player.h"

5 #include "level.h"

6

7 void player_init(struct player *p, struct level *lvl)

8 {

9 p->lvl = lvl;

10 level_cell_to_pos(lvl, lvl->start_pos[0], lvl->start_pos[1], &p->x, &p->y);

11 p->horiz_angle = 0;

12 p->vert_angle = 0;

13 }

14

15 int player_move(struct player *p, float dfwd, float dright)

16 {

17 int collide;

18 float angle = M_PI * p->horiz_angle / 180.0;

19 float fwd_dirx = sin(angle);

20 float fwd_diry = -cos(angle);

21 float right_dirx = sin(angle + M_PI / 2.0);

22 float right_diry = -cos(angle + M_PI / 2.0);

23

24 float dx = dfwd * fwd_dirx + dright * right_dirx;

25 float dy = dfwd * fwd_diry + dright * right_diry;

26

27 if(!dfwd && !dright) return 1;

28

29 /* calculate collisions */

30 collide = level_collide(p->lvl, 0.7, p->x, p->y, &dx, &dy);

31

32 p->x += dx;

33 p->y += dy;

34

35 return !collide;

36 }

37

38 void player_turn(struct player *p, float horiz_deg, float vert_deg)

39 {

40 float va = p->vert_angle + vert_deg;

41

42 if(va < -90.0) va = -90.0;

43 if(va > 90.0) va = 90.0;

44

45 p->horiz_angle += horiz_deg;/*fmod(p->horiz_angle + horiz_deg, 360.0);*/

46 p->vert_angle = va;

47 }

48

49 void player_setup_view_matrix(struct player *p)

50 {

51 glRotatef(p->vert_angle, 1, 0, 0);

52 glRotatef(p->horiz_angle, 0, 1, 0);

53 glTranslatef(-p->x, 0, -p->y);

54 }