diff options
Diffstat (limited to 'ball.c')
| -rw-r--r-- | ball.c | 51 |
1 files changed, 51 insertions, 0 deletions
@@ -0,0 +1,51 @@ +#include <stdlib.h>
+
+#include "SDL.h"
+#include "SDL_opengl.h"
+
+#include "glpong.h"
+#include "ball.h"
+
+void GLPong_BallAdd() {
+ Uint8 i;
+ int added = 0;
+ for (i = 0; i < sizeof(GLPong.Balls) / sizeof(void *); i++) {
+ if (GLPong.Balls[i] == NULL) {
+ GLPong.Balls[i] = malloc(sizeof(Ball_t));
+ added = 1;
+ break;
+ }
+ }
+
+ if (added) {
+ GLPong.Balls[i]->w = GLPong.w / (GLfloat)40;
+ GLPong.Balls[i]->h = GLPong.h / (GLfloat)30;
+ GLPong.Balls[i]->x = 40.0f;
+ GLPong.Balls[i]->y = 40.0f;
+ GLPong.Balls[i]->r = (float)rand() / RAND_MAX;
+ GLPong.Balls[i]->g = (float)rand() / RAND_MAX;
+ GLPong.Balls[i]->b = (float)rand() / RAND_MAX;
+ GLPong.Balls[i]->a = SDL_ALPHA_OPAQUE;
+ GLPong.Balls[i]->xv = GLPong.w / (GLfloat)320;
+ GLPong.Balls[i]->yv = GLPong.h / (GLfloat)240;
+ }
+}
+
+void GLPong_BallDelete() {
+ Uint8 i;
+ for (i = 0; i < sizeof(GLPong.Balls) / sizeof(void *); i--) {
+ if (GLPong.Balls[i] != NULL) {
+ free(GLPong.Balls[i]);
+ GLPong.Balls[i] = NULL;
+ break;
+ }
+ }
+}
+
+int GLPong_BallCollide(const Ball_t * a, const Ball_t * b) {
+ if ( b->x + b->w < a->x ) return 0;
+ if ( b->x > a->x + a->w ) return 0;
+ if ( b->y + b->h < a->y ) return 0;
+ if ( b->y > a->y + a->h ) return 0;
+ return 1;
+}
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