#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define TERASGN(a, b, c, d) (a) ? (b = d) : (c = d)
enum {THM, AABB};
int colltype = -1;
int postype = -1;
int verbose = 0;
const char *opts = "c:v:h";
struct pos {
int x;
int y;
int z;
double fx;
double fy;
double fz;
};
struct colis {
int w;
int h;
double xvel;
double yvel;
struct pos pos;
int a1;
int a2;
int b1;
int b2;
double c1;
double c2;
double d1;
double d2;
uint8_t *heightmap;
unsigned int clx : 1;
unsigned int cly : 1;
unsigned int gnded : 1;
unsigned int flp : 1;
};
static int usage() {
printf(
"clld Version MFIYA.\n"
"Usage: clld [options]\n"
"Options:\n"
" -c[type] Force the collision type to be\n"
" the specified type (THM=0, AABB=1).\n"
" -v[level] Sets the verbosity level (0-3).\n"
" -h What do you fucking think it does.\n"
" Anyways, it brings up this cool help\n"
" message.\n"
);
return 0;
}
int clx(struct colis c, struct colis f, int xvel, uint8_t flt) {
int l = (!flt) ? (c.a2 > f.a1-xvel-1 && c.b2 > f.b1) : (c.c2 > f.c1-c.xvel-1 && c.d2 > f.d1);
int r = (!flt) ? (c.a1 < f.a2-xvel+1 && c.b1 < f.b2) : (c.c1 < f.c2-c.xvel+1 && c.d1 < f.d2);
return l && r;
}
int cly(struct colis c, struct colis f, int yvel, uint8_t flt) {
int b = (!flt) ? (c.b2 > f.b1-yvel-1 && c.a2 > f.a1) : (c.d2 > f.d1-c.yvel-1 && c.c2 > f.c1);
int t = (!flt) ? (c.b1 < f.b2-yvel+1 && c.a1 < f.a2) : (c.d1 < f.d2-c.yvel+1 && c.c1 < f.c2);
return b && t;
}
int thm(uint8_t flt, int hmpeak, struct colis cursor, struct colis floor) {
int newy = 0;
if (!flt) {
cursor.a1 = cursor.pos.x;
cursor.a2 = cursor.pos.x+cursor.w;
cursor.b1 = cursor.pos.y;
cursor.b2 = cursor.pos.y+cursor.h;
floor.a1 = floor.pos.x;
floor.a2 = floor.pos.x+floor.w;
floor.b1 = floor.pos.y;
floor.b2 = floor.pos.y+floor.h;
cursor.clx = ((cursor.a2 > floor.a1-(int)cursor.xvel-1 && cursor.b2 > floor.b1) && (cursor.a1 < (floor.a2-cursor.w)-(int)cursor.xvel+1 && cursor.b1 < floor.b2)) ? 1 : 0;
cursor.cly = ((cursor.b2 >= (floor.b1-hmpeak)-(int)cursor.yvel && cursor.a2 >= floor.a1) && (cursor.b1 <= (floor.b2+hmpeak)-(int)cursor.yvel && cursor.a1 <= floor.a2)) ? 1 : 0;
if (cursor.clx) {
if (cursor.a2-floor.a1 < 0 || cursor.a2-floor.a1 > floor.w) {
if (cursor.a2 > floor.a1-(int)cursor.xvel-1 && floor.b2-cursor.b2 < (int)floor.heightmap[0] && !floor.flp && cursor.xvel > 0)
cursor.pos.x = (floor.pos.x-(int)cursor.xvel)-cursor.w-1;
else if (cursor.a1 < (floor.a2-cursor.w)-(int)cursor.xvel+1 && floor.b2-cursor.b2 < (int)floor.heightmap[floor.w-1] && !floor.flp && cursor.xvel < 0)
cursor.pos.x = (floor.a2-cursor.w)-(int)cursor.xvel+1;
if (cursor.a1 < (floor.a2-cursor.w)-(int)cursor.xvel+1 && cursor.b1-floor.b1 < 0 && floor.flp && cursor.xvel < 0)
cursor.pos.x = (floor.a2-cursor.w)-(int)cursor.xvel+1;
else if (cursor.a2 > floor.a1-(int)cursor.xvel-1 && cursor.b1-floor.b1 < 0 && floor.flp && cursor.xvel > 0)
cursor.pos.x = (floor.pos.x-(int)cursor.xvel)-cursor.w-1;
cursor.xvel = 0;
}
}
if (cursor.cly) {
if (cursor.a2-floor.a1 < floor.w) {
cursor.yvel = 0;
newy = (int)floor.heightmap[cursor.a2-floor.a1];
if (cursor.b2 > (floor.b2-hmpeak)-(int)cursor.yvel && floor.b2-cursor.b2 >= 0 && !floor.flp)
cursor.pos.y = ((floor.b2-cursor.h)-newy)-(int)cursor.yvel;
else if (cursor.b1 < floor.b2-(int)cursor.yvel+1 && floor.b2-cursor.b1 <= 0 && !floor.flp)
cursor.pos.y = (floor.pos.y+floor.h)-(int)cursor.yvel+1;
if (cursor.b1 < (floor.b1+hmpeak)-(int)cursor.yvel && cursor.b1-floor.b1 >= 0 && floor.flp)
cursor.pos.y = (floor.pos.y+newy)-(int)cursor.yvel;
else if (cursor.b2 > floor.b1-(int)cursor.yvel-1 && cursor.b2-floor.b1 < 0 && cursor.yvel > 0 && floor.flp)
cursor.pos.y = (floor.pos.y-(int)cursor.yvel-1)-cursor.h;
}
}
cursor.gnded = (cursor.pos.y == ((floor.b2-cursor.h)-newy)-(int)cursor.yvel) ? 1 : 0;
if (verbose >= 1) {
printf(
"cursor.a1-(floor.a2-(floor.w/2)): %i\n"
"cursor.a2-(floor.a2-(floor.w/2)): %i\n"
"(cursor.a2-(cursor.w/2))-(floor.a2-(floor.w/2)): %i\n"
"(cursor.a2-(cursor.w/2)): %i\n"
, cursor.a1-(floor.a2-(floor.w/2))
, cursor.a2-(floor.a2-(floor.w/2))
, (cursor.a2-(cursor.w/2))-(floor.a2-(floor.w/2))
, (cursor.a2-(cursor.w/2)));
}
printf("%u, %u\n%u\n%i\n%i, %i\n%07.06f, %07.06f\n", cursor.clx, cursor.cly, cursor.gnded, newy, cursor.pos.x, cursor.pos.y, cursor.xvel, cursor.yvel);
} else {
cursor.c1 = cursor.pos.fx;
cursor.c2 = cursor.pos.fx+cursor.w;
cursor.d1 = cursor.pos.fy;
cursor.d2 = cursor.pos.fy+cursor.h;
floor.c1 = floor.pos.fx;
floor.c2 = floor.pos.fx+floor.w;
floor.d1 = floor.pos.fy;
floor.d2 = floor.pos.fy+floor.h;
cursor.clx = ((cursor.c2 > floor.c1-cursor.xvel-1 && cursor.d2 > floor.d1) && (cursor.c1 < (floor.c2-cursor.w)-cursor.xvel+1 && cursor.d1 < floor.d2)) ? 1 : 0;
cursor.cly = ((cursor.d2 >= (floor.d1-hmpeak)-cursor.yvel && cursor.c2 >= floor.c1) && (cursor.d1 <= (floor.d2+hmpeak)-cursor.yvel && cursor.c1 <= floor.c2)) ? 1 : 0;
if (cursor.clx) {
if (cursor.c2-floor.c1 < -1 || cursor.c2-floor.c1 > floor.w) {
if (cursor.c2 > floor.c1-cursor.xvel-1 && floor.d2-cursor.d2 < (int)floor.heightmap[0] && !floor.flp && cursor.xvel > 0)
cursor.pos.fx = (floor.pos.x-cursor.xvel)-cursor.w-1;
else if (cursor.c1 < (floor.c2-cursor.w)-cursor.xvel+1 && floor.d2-cursor.d2 < (int)floor.heightmap[floor.w-1] && !floor.flp && cursor.xvel < 0)
cursor.pos.fx = (floor.c2-cursor.w)-cursor.xvel+1;
if (cursor.c1 < (floor.c2-cursor.w)-cursor.xvel+1 && cursor.d1-floor.d1 < 0 && floor.flp && cursor.xvel < 0)
cursor.pos.fx = (floor.c2-cursor.w)-cursor.xvel+1;
else if (cursor.c2 > floor.c1-cursor.xvel-1 && cursor.d1-floor.d1 < 0 && floor.flp && cursor.xvel > 0)
cursor.pos.fx = (floor.pos.x-cursor.xvel)-cursor.w-1;
cursor.xvel = 0;
}
}
if (cursor.cly) {
if (cursor.c2-floor.c1 < floor.w) {
cursor.yvel = 0;
newy = (int)floor.heightmap[(int)cursor.c2-(int)floor.c1];
if (cursor.d2 > (floor.d2-hmpeak)-cursor.yvel && floor.d2-cursor.d2 >= 0 && !floor.flp)
cursor.pos.fy = ((floor.d2-cursor.h)-newy)-cursor.yvel;
else if (cursor.d1 < floor.d2-cursor.yvel+1 && floor.d2-cursor.d1 <= 0 && !floor.flp)
cursor.pos.fy = (floor.d2)-cursor.yvel+1;
if (cursor.d1 < (floor.d1+hmpeak)-cursor.yvel && cursor.d1-floor.d1 >= 0 && floor.flp)
cursor.pos.fy = (floor.pos.fy+newy)-cursor.yvel;
else if (cursor.d2 > floor.d1-cursor.yvel-1 && cursor.d2-floor.d1 < 0 && cursor.yvel > 0 && floor.flp)
cursor.pos.fy = (floor.pos.fy-cursor.yvel-1)-cursor.h;
}
}
cursor.gnded = (cursor.pos.fy == ((floor.d2-cursor.h)-newy)-cursor.yvel) ? 1 : 0;
printf("%u, %u\n%u\n%i\n%07.06f, %07.06f\n%07.06f, %07.06f\n", cursor.clx, cursor.cly, cursor.gnded, newy, cursor.pos.fx, cursor.pos.fy, cursor.xvel, cursor.yvel);
}
return 0;
}
int aabb(uint8_t flt, struct colis cursor, struct colis floor) {
if (!flt) {
cursor.a1 = cursor.pos.x;
cursor.a2 = cursor.pos.x+cursor.w;
cursor.b1 = cursor.pos.y;
cursor.b2 = cursor.pos.y+cursor.h;
floor.a1 = floor.pos.x;
floor.a2 = floor.pos.x+floor.w;
floor.b1 = floor.pos.y;
floor.b2 = floor.pos.y+floor.h;
cursor.gnded = (cursor.b2 == floor.b1-(int)cursor.yvel-1) ? 1 : 0;
cursor.clx = clx(cursor, floor, (int)cursor.xvel, flt);
cursor.cly = cly(cursor, floor, (int)cursor.yvel, flt);
if (cursor.clx) {
if (cursor.a2 > floor.a1-(int)cursor.xvel-1 && cursor.xvel > 0)
cursor.pos.x = (floor.pos.x-(int)cursor.xvel)-cursor.w-1;
else if (cursor.a1 < floor.a2-(int)cursor.xvel+1 && cursor.xvel < 0)
cursor.pos.x = (floor.pos.x+floor.w)-(int)cursor.xvel+1;
cursor.xvel = 0;
}
if (cursor.cly) {
if (cursor.b2 > floor.b1-(int)cursor.yvel-1 && cursor.yvel > 0)
cursor.pos.y = (floor.pos.y-(int)cursor.yvel)-cursor.h-1;
else if (cursor.b1 < floor.b2-(int)cursor.yvel+1 && cursor.yvel < 0)
cursor.pos.y = (floor.pos.y+floor.h)-(int)cursor.yvel+1;
cursor.yvel = 0;
}
printf("%u, %u\n%u\n%i, %i\n%07.06f, %07.06f\n", cursor.clx, cursor.cly, cursor.gnded, cursor.pos.x, cursor.pos.y, cursor.xvel, cursor.yvel);
} else {
cursor.c1 = cursor.pos.fx;
cursor.c2 = cursor.pos.fx+cursor.w;
cursor.d1 = cursor.pos.fy;
cursor.d2 = cursor.pos.fy+cursor.h;
floor.c1 = floor.pos.fx;
floor.c2 = floor.pos.fx+floor.w;
floor.d1 = floor.pos.fy;
floor.d2 = floor.pos.fy+floor.h;
cursor.gnded = (cursor.d2 == floor.d1-cursor.yvel-1) ? 1 : 0;
cursor.clx = clx(cursor, floor, 0, flt);
cursor.cly = cly(cursor, floor, 0, flt);
if (cursor.clx) {
if (cursor.c2 > floor.c1-cursor.xvel-1 && cursor.xvel > 0)
cursor.pos.fx = (floor.pos.fx-cursor.xvel)-(double)cursor.w-1;
else if (cursor.c1 < floor.c2-cursor.xvel+1 && cursor.xvel < 0)
cursor.pos.fx = (floor.pos.fx+(double)floor.w)-cursor.xvel+1;
cursor.xvel = 0;
}
if (cursor.cly) {
if (cursor.d2 > floor.d1-cursor.yvel-1 && cursor.yvel > 0)
cursor.pos.fy = (floor.pos.fy-cursor.yvel)-(double)cursor.h-1;
else if (cursor.d1 < floor.d2-cursor.yvel+1 && cursor.yvel < 0)
cursor.pos.fy = (floor.pos.fy+(double)floor.h)-cursor.yvel+1;
cursor.yvel = 0;
}
printf("%u, %u\n%u\n%07.06f, %07.06f\n%07.06f, %07.06f\n", cursor.clx, cursor.cly, cursor.gnded, cursor.pos.fx, cursor.pos.fy, cursor.xvel, cursor.yvel);
}
return 0;
}
int main(int argc, char **argv) {
int c;
opterr = 0;
while ((c = getopt(argc, argv, opts)) != -1) {
switch(c) {
case 'c':
colltype = atoi(optarg);
break;
case 'v':
verbose = atoi(optarg);
break;
case 'h':
usage();
return 2;
case '?':
if (isprint(optopt)) {
if (optopt == 'c') {
fprintf(stderr, "Setting colltype to default.\n");
colltype = -1;
break;
} else if (optopt == 'v') {
fprintf(stderr, "Enabling single level verbosity.\n");
verbose = 1;
break;
} else {
fprintf(stderr
, "The option that you have typed in, which in this case\n"
"is -%c, does not exist.\n"
"Try looking at the help message, or RTFM, next time.\n"
, optopt);
}
} else {
fprintf(stderr
, "What the fuck are you trying to type in, a binary blob?\n"
"Because of this, clld will exit, so, stop acting like a\n"
"jackass.\n");
}
return -1;
default: ;
}
}
struct colis cursor;
struct colis floor;
colltype = AABB;
cursor.h = 16;
cursor.w = 16;
cursor.pos.x = 24;
cursor.pos.y = 15;
cursor.xvel = 0;
cursor.yvel = 1;
floor.w = 16;
floor.h = 16;
floor.flp = 0;
int hmpeak;
if (colltype == THM) {
floor.heightmap = malloc(sizeof(uint8_t *)*floor.w);
for (int i = 0; i <floor.w; i++)
floor.heightmap[i] = i+1;
hmpeak = floor.heightmap[floor.w-1];
}
uint8_t flt = 0;
floor.pos.x = 32;
floor.pos.y = 32;
if (colltype == THM)
thm(flt, hmpeak, cursor, floor);
if (colltype == AABB)
aabb(flt, cursor, floor);
if(colltype == THM) {
free(floor.heightmap);
}
fflush(stdout);
return 0;
}