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complete collision detection

This commit is contained in:
randomuser 2021-10-18 18:52:33 -05:00
parent 8a6d333cd2
commit 5905f78b17
1 changed files with 18 additions and 3 deletions
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21
c/anaconda.c
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@ -73,7 +73,7 @@ void appendPoint(point *dest, point *origin) {
dest->next = origin; dest->next = origin;
} }
void updateAnaconda(anaconda *anaconda) { int updateAnaconda(anaconda *anaconda) {
point *prev = anaconda->chain; point *prev = anaconda->chain;
point *temp = rotate(mkPoint(10, 0), anaconda->rot); point *temp = rotate(mkPoint(10, 0), anaconda->rot);
point *new = mkPoint( point *new = mkPoint(
@ -96,6 +96,19 @@ void updateAnaconda(anaconda *anaconda) {
} }
free(traverser->next); free(traverser->next);
traverser->next = NULL; traverser->next = NULL;
point *top = anaconda->chain;
point *ptr = top;
for(int i = 0; i < 3; i++) {
if(ptr->next) ptr = ptr->next;
else return 1; /* we're fine, the snake is too short to intersect itself */
}
while(ptr->next) {
if(intersect(top, top->next, ptr, ptr->next)) return 0;
ptr = ptr->next;
}
return 1;
} }
point *generateChain(int length) { point *generateChain(int length) {
@ -124,10 +137,12 @@ anaconda *mkAnaconda(point *point, double rot) {
} }
int main(void) { int main(void) {
anaconda *anaconda = mkAnaconda(generateChain(10), 0); anaconda *anaconda = mkAnaconda(generateChain(30), 0);
xinit(); xinit();
while(1) { while(1) {
updateAnaconda(anaconda); if(!updateAnaconda(anaconda)) {
return 0;
}
XClearWindow(d, w); XClearWindow(d, w);
point *ptr = anaconda->chain; point *ptr = anaconda->chain;
while(ptr->next) { while(ptr->next) {