Revision 306
finally solved problem of lag
| graph.c | ||
|---|---|---|
| 357 | 357 |
struct sprite{
|
| 358 | 358 |
const basic_sprite_t *bsp; |
| 359 | 359 |
int16_t x, y; //position in screen |
| 360 |
double theta, s, c; |
|
| 361 |
double scale; |
|
| 360 |
int16_t su0, sv0; |
|
| 361 |
float theta, s, c; |
|
| 362 |
float scale; |
|
| 363 |
uint8_t *sbuf; |
|
| 362 | 364 |
}; |
| 363 | 365 |
sprite_t* (sprite_ctor)(const basic_sprite_t *bsp){
|
| 364 | 366 |
sprite_t *ret = malloc(sizeof(sprite_t)); |
| 365 | 367 |
if(ret == NULL) return NULL; |
| 366 | 368 |
ret->bsp = bsp; |
| 369 |
ret->sbuf = NULL; |
|
| 367 | 370 |
ret->x = 0; |
| 368 | 371 |
ret->y = 0; |
| 369 | 372 |
sprite_set_angle(ret, 0.0); |
| 370 |
ret->scale = 1.0;
|
|
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sprite_set_scale(ret, 1.0);
|
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| 371 | 374 |
return ret; |
| 372 | 375 |
} |
| 373 | 376 |
void (sprite_dtor)(sprite_t *p){
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| 374 | 377 |
if(p == NULL) return; |
| 378 |
free(p->sbuf); |
|
| 375 | 379 |
free(p); |
| 376 | 380 |
} |
| 377 | 381 |
void (sprite_set_pos) (sprite_t *p, int16_t x , int16_t y ){ p->x = x; p->y = y; }
|
| 378 | 382 |
void (sprite_set_angle) (sprite_t *p, double angle ){ p->theta = angle; p->c = fm_cos(p->theta); p->s = fm_sin(p->theta); }
|
| 379 |
void (sprite_set_scale) (sprite_t *p, double scale ){ p->scale = scale; }
|
|
| 383 |
void (sprite_set_scale) (sprite_t *p, double scale ){
|
|
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if(p->scale == scale) return; |
|
| 385 |
p->scale = scale; |
|
| 386 |
|
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p->su0 = p->bsp->u0*p->scale; |
|
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p->sv0 = p->bsp->u0*p->scale; |
|
| 389 |
|
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const uint16_t W = basic_sprite_get_w(p->bsp), |
|
| 391 |
H = basic_sprite_get_h(p->bsp); |
|
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uint16_t sW = W*scale, sH = H*scale; |
|
| 393 |
p->sbuf = realloc(p->sbuf, sW*sH*4); |
|
| 394 |
const uint8_t *map = basic_sprite_get_map(p->bsp); |
|
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for(uint16_t sx = 0; sx < sW; ++sx){
|
|
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for(uint16_t sy = 0; sy < sH; ++sy){
|
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uint16_t x = sx/scale, y = sy/scale; |
|
| 398 |
if(x > W || y > H) continue; |
|
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memcpy(p->sbuf+4*(sx+sy*sW), map+4*(x+y*W), 4); |
|
| 400 |
} |
|
| 401 |
} |
|
| 402 |
} |
|
| 380 | 403 |
int16_t (sprite_get_x)(const sprite_t *p){ return p->x; }
|
| 381 | 404 |
int16_t (sprite_get_y)(const sprite_t *p){ return p->y; }
|
| 382 | 405 |
double (sprite_get_angle)(const sprite_t *p){ return p->theta; }
|
| 383 | 406 |
uint16_t (sprite_get_w)(const sprite_t *p){ return basic_sprite_get_w(p->bsp); }
|
| 384 | 407 |
uint16_t (sprite_get_h)(const sprite_t *p){ return basic_sprite_get_h(p->bsp); }
|
| 385 |
void (sprite_src2pic)(const sprite_t *p, int16_t x, int16_t y, int16_t *u, int16_t *v){
|
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double dx = (x - p->x)/p->scale; |
|
| 387 |
double dy = (y - p->y)/p->scale; |
|
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int16_t du = dx*p->c - dy*p->s - 0.5; |
|
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int16_t dv = dx*p->s + dy*p->c - 0.5; |
|
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*u = du + basic_sprite_get_u0(p->bsp); |
|
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*v = dv + basic_sprite_get_v0(p->bsp); |
|
| 408 |
void (sprite_src2sbuf)(const sprite_t *p, int16_t x, int16_t y, int16_t *u, int16_t *v){
|
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| 409 |
if(p->theta == 0.0){
|
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*u = x - p->x + p->su0; |
|
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*v = y - p->y + p->sv0; |
|
| 412 |
}else{
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float dx = x - p->x; |
|
| 414 |
float dy = y - p->y; |
|
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int16_t du = dx*p->c - dy*p->s - 0.5f; |
|
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int16_t dv = dx*p->s + dy*p->c - 0.5f; |
|
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*u = du + p->su0; |
|
| 418 |
*v = dv + p->sv0; |
|
| 419 |
} |
|
| 392 | 420 |
} |
| 393 |
void (sprite_pic2src)(const sprite_t *p, int16_t u, int16_t v, int16_t *x, int16_t *y){
|
|
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int16_t du = u - basic_sprite_get_u0(p->bsp);
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int16_t dv = v - basic_sprite_get_v0(p->bsp);
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| 421 |
void (sprite_sbuf2src)(const sprite_t *p, int16_t u, int16_t v, int16_t *x, int16_t *y){
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int16_t du = u - p->su0;
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int16_t dv = v - p->sv0;
|
|
| 396 | 424 |
double dx = du*p->c + dv*p->s; |
| 397 | 425 |
double dy = -du*p->s + dv*p->c; |
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*x = dx*p->scale + 0.5 + p->x;
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*y = dy*p->scale + 0.5 + p->y;
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*x = dx + 0.5 + p->x; |
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*y = dy + 0.5 + p->y; |
|
| 400 | 428 |
} |
| 429 |
|
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| 401 | 430 |
void (sprite_draw)(const sprite_t *p){
|
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const uint16_t w = basic_sprite_get_w(p->bsp);
|
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const uint16_t h = basic_sprite_get_h(p->bsp);
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const uint16_t sw = p->scale*basic_sprite_get_w(p->bsp);
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const uint16_t sh = p->scale*basic_sprite_get_h(p->bsp);
|
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| 404 | 433 |
int16_t xmin, xmax, ymin, ymax; {
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| 405 | 434 |
int16_t x, y; |
| 406 |
sprite_pic2src(p, 0, 0, &x, &y);
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sprite_sbuf2src(p, 0 , 0 , &x, &y);
|
|
| 407 | 436 |
xmin = x; xmax = x; ymin = y; ymax = y; |
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sprite_pic2src(p, w, 0, &x, &y);
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sprite_sbuf2src(p, sw, 0 , &x, &y);
|
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| 409 | 438 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
| 410 |
sprite_pic2src(p, 0, h, &x, &y);
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sprite_sbuf2src(p, 0 , sh, &x, &y);
|
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| 411 | 440 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
| 412 |
sprite_pic2src(p, w, h, &x, &y);
|
|
| 441 |
sprite_sbuf2src(p, sw, sh, &x, &y);
|
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| 413 | 442 |
xmin = min(x, xmin); xmax = max(x, xmax); ymin = min(y, ymin); ymax = max(y, ymax); |
| 414 |
xmin = max(xmin-(int16_t)p->scale-2, 0); xmax = min(xmax+(int16_t)p->scale+2, graph_get_XRes());
|
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ymin = max(ymin-(int16_t)p->scale-2, 0); ymax = min(ymax+(int16_t)p->scale+2, graph_get_YRes());
|
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| 443 |
xmin = max(xmin-2, 0); xmax = min(xmax+2, graph_get_XRes());
|
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ymin = max(ymin-2, 0); ymax = min(ymax+2, graph_get_YRes());
|
|
| 416 | 445 |
} |
| 417 |
const uint8_t *map = basic_sprite_get_map(p->bsp); |
|
| 418 | 446 |
const uint16_t bytes_pixel = 3/*graph_get_bytes_pixel()*/; |
| 419 | 447 |
for(int16_t u, v, y = ymin; y < ymax; ++y){
|
| 420 | 448 |
uint8_t *place = video_buf + (xmin + y*graph_get_XRes())*bytes_pixel; |
| 421 | 449 |
for(int16_t x = xmin; x < xmax; ++x, place += bytes_pixel){
|
| 422 |
sprite_src2pic(p, x, y, &u, &v); |
|
| 423 |
if(0 <= u && u < w && 0 <= v && v < h){
|
|
| 424 |
const uint8_t *c_p = map+(v*w+u)*4; |
|
| 425 |
if(*(c_p+3) < ALPHA_THRESHOLD) //alpha |
|
| 450 |
sprite_src2sbuf(p, x, y, &u, &v); |
|
| 451 |
//u = x; v = y; |
|
| 452 |
if(0 <= u && u < sw && 0 <= v && v < sh){
|
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| 453 |
const uint8_t *c_p = p->sbuf+(v*sw+u)*4; |
|
| 454 |
if(*(c_p+3) < ALPHA_THRESHOLD){ //alpha
|
|
| 426 | 455 |
memcpy(place, c_p, bytes_pixel); |
| 456 |
} |
|
| 427 | 457 |
} |
| 428 | 458 |
} |
| 429 | 459 |
} |
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