Revision 163
changed stuff in sprite
| proj/sprite.c | ||
|---|---|---|
| 3 | 3 |
#include "sprite.h" |
| 4 | 4 |
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| 5 | 5 |
#include "graphics.h" |
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#include "utils.h" |
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#include <math.h> |
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struct sprite{
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int x, y; |
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int w, h;
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int u0, v0; |
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int16_t x, y;
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uint16_t w, h;
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int16_t u0, v0;
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| 12 | 13 |
double theta; |
| 13 | 14 |
uint8_t *map; |
| 14 | 15 |
}; |
| 15 | 16 |
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sprite_t* sprite_ctor(const char **xpm, int u0, int v0){
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sprite_t* (sprite_ctor)(const char **xpm, int u0, int v0){
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sprite_t *ret = (sprite_t*)malloc(sizeof(sprite_t)); |
| 18 | 19 |
if(ret == NULL) return NULL; |
| 19 | 20 |
enum xpm_image_type type = XPM_8_8_8_8; |
| ... | ... | |
| 32 | 33 |
ret->theta = 0; |
| 33 | 34 |
return ret; |
| 34 | 35 |
} |
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void sprite_dtor(sprite_t *p){
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void (sprite_dtor)(sprite_t *p){
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if(p == NULL) return; |
| 37 | 38 |
if(p->map) free(p->map); |
| 38 | 39 |
free(p); |
| 39 | 40 |
} |
| 40 | 41 |
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void sprite_set_x(sprite_t *p, int x){ p->x = x; }
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void sprite_set_y(sprite_t *p, int y){ p->y = y; }
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void sprite_set_pos(sprite_t *p, int x, int y){ sprite_set_x(p, x); sprite_set_y(p, y); }
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void sprite_set_angle(sprite_t *p, double angle){ p->theta = angle; }
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void sprite_set_center(sprite_t *p, int u0, int v0){ p->u0 = u0; p->v0 = v0; }
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void (sprite_set_x) (sprite_t *p, int16_t x){ p->x = x; }
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void (sprite_set_y) (sprite_t *p, int16_t y){ p->y = y; }
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void (sprite_set_pos) (sprite_t *p, int16_t x, int16_t y){ sprite_set_x(p, x); sprite_set_y(p, y); }
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void (sprite_set_angle) (sprite_t *p, double angle){ p->theta = angle; }
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void (sprite_set_center)(sprite_t *p, int16_t u0, int16_t v0){ p->u0 = u0; p->v0 = v0; }
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| 46 | 47 |
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int sprite_get_w(const sprite_t *p){ return p->w; }
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int sprite_get_h(const sprite_t *p){ return p->h; }
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uint16_t (sprite_get_w)(const sprite_t *p){ return p->w; }
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uint16_t (sprite_get_h)(const sprite_t *p){ return p->h; }
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| 49 | 50 |
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void sprite_src2pic(const sprite_t *p, int x, int y, int *u, int *v){
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int dx = x - p->x; |
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int dy = y - p->y; |
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//int du = dx*cos(p->theta) - dy*sin(p->theta); |
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//int dv = dx*sin(p->theta) + dy*cos(p->theta); |
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//*u = du + p->u0; |
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//*v = dv + p->v0; |
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//*u = dx*cos(p->theta) - dy*sin(p->theta) + p->u0; |
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//*v = dx*sin(p->theta) + dy*cos(p->theta) + p->v0; |
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void (sprite_src2pic)(const sprite_t *p, int16_t x, int16_t y, int16_t *u, int16_t *v){
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int16_t dx = x - p->x; |
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int16_t dy = y - p->y; |
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| 59 | 54 |
double s = sin(p->theta); |
| 60 | 55 |
double c = cos(p->theta); |
| 61 | 56 |
*u = dx*c - dy*s + p->u0; |
| 62 | 57 |
*v = dx*s + dy*c + p->v0; |
| 63 | 58 |
} |
| 64 | 59 |
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void sprite_draw(const sprite_t *p){
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const int diag = sqrt(p->w*p->w + p->h*p->h)+2; |
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int u, v; |
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for(int y = p->y - diag; y < p->y + diag; ++y){
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for(int x = p->x - diag; x < p->x + diag; ++x){
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if (p->x + x < get_XRes() && p->y + y < get_YRes()){
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sprite_src2pic(p, x, y, &u, &v); |
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if(0 <= u && u < p->w && 0 <= v && v < p->h){
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uint8_t *m = p->map + (v*p->w + u)*4; |
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uint32_t color = SET_RGB(*(m+2), *(m+1), *(m)); |
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set_pixel_alpha(p->x + x, p->y + y, color, *(m+3)); |
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} |
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void (sprite_draw)(const sprite_t *p){
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const int16_t diag = sqrt(p->w*p->w + p->h*p->h)+2; |
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int16_t u, v; |
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for(int16_t y = max(0,p->y-diag); y < min(p->y+diag,get_YRes()); ++y){
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for(int16_t x = max(0,p->x-diag); x < min(p->x+diag,get_XRes()); ++x){
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sprite_src2pic(p, x, y, &u, &v); |
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if(0 <= u && u < p->w && 0 <= v && v < p->h){
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uint8_t *m = p->map + (v*p->w + u)*4; |
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uint32_t color = SET_RGB(*(m+2), *(m+1), *(m)); |
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set_pixel_alpha(p->x + x, p->y + y, color, *(m+3)); |
|
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} |
| 78 | 71 |
} |
| 79 | 72 |
} |
| proj/sprite.h | ||
|---|---|---|
| 4 | 4 |
struct sprite; |
| 5 | 5 |
typedef struct sprite sprite_t; |
| 6 | 6 |
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sprite_t* sprite_ctor(const char **xpm, int u0, int v0);
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void sprite_dtor(sprite_t *p);
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sprite_t* (sprite_ctor)(const char **xpm, int u0, int v0);
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void (sprite_dtor)(sprite_t *p);
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| 9 | 9 |
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void sprite_set_x (sprite_t *p, int x);
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void sprite_set_y (sprite_t *p, int y);
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void sprite_set_pos (sprite_t *p, int x, int y);
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void sprite_set_angle (sprite_t *p, double angle);
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void sprite_set_center(sprite_t *p, int u0, int v0);
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void (sprite_set_x) (sprite_t *p, int16_t x);
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void (sprite_set_y) (sprite_t *p, int16_t y);
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void (sprite_set_pos) (sprite_t *p, int16_t x, int16_t y);
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void (sprite_set_angle) (sprite_t *p, double angle);
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void (sprite_set_center)(sprite_t *p, int16_t u0, int16_t v0);
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| 15 | 15 |
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int sprite_get_w(const sprite_t *p);
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int sprite_get_h(const sprite_t *p);
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uint16_t (sprite_get_w)(const sprite_t *p);
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uint16_t (sprite_get_h)(const sprite_t *p);
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| 18 | 18 |
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void sprite_draw(const sprite_t *p);
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void (sprite_draw)(const sprite_t *p);
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| 20 | 20 |
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| 21 | 21 |
#endif //SPRITE_H_INCLUDED |
Also available in: Unified diff