Revision 227
implemented bullet movement and angle
| ent.c | ||
|---|---|---|
| 65 | 65 |
double vx, vy; |
| 66 | 66 |
sprite_t *b; |
| 67 | 67 |
}; |
| 68 |
bullet_t* (bullet_ctor)(basic_sprite_t *b){
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| 68 |
bullet_t* (bullet_ctor)(basic_sprite_t *b, double x, double y, double vx, double vy){
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| 69 | 69 |
bullet_t *ret = malloc(sizeof(bullet_t)); |
| 70 | 70 |
if(ret == NULL) return NULL; |
| 71 |
ret-> x = 0.0;
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| 72 |
ret-> y = 0.0;
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| 73 |
ret->vx = 0.0;
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| 74 |
ret->vy = 0.0;
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| 71 |
ret-> x = x;
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| 72 |
ret-> y = y;
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| 73 |
ret->vx = vx;
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| 74 |
ret->vy = vy;
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| 75 | 75 |
ret->b = sprite_ctor(b); |
| 76 | 76 |
if(ret->b == NULL){
|
| 77 | 77 |
bullet_dtor(ret); |
| 78 | 78 |
return NULL; |
| 79 |
}else return ret; |
|
| 79 |
} |
|
| 80 |
double angle = atan2(-ret->vy, ret->vx); |
|
| 81 |
sprite_set_angle(ret->b, angle-M_PI_2); |
|
| 82 |
return ret; |
|
| 80 | 83 |
} |
| 81 | 84 |
void (bullet_dtor)(bullet_t *p){
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| 82 | 85 |
if(p == NULL) return; |
| 83 | 86 |
sprite_dtor(p->b); |
| 84 | 87 |
free(p); |
| 85 | 88 |
} |
| 86 |
void (bullet_set_pos) (bullet_t *p, double x, double y){ p->x = x; p->y = y; }
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| 87 |
void (bullet_set_angle)(bullet_t *p, double angle ){ sprite_set_angle(p->b, angle); }
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| 88 | 89 |
double (bullet_get_x) (const bullet_t *p){ return p->x; }
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| 89 | 90 |
double (bullet_get_y) (const bullet_t *p){ return p->y; }
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| 90 | 91 |
int16_t (bullet_get_x_screen)(const bullet_t *p){ return (p->x-x_origin)*scale; }
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