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binding-of-isaac/src/entities.c

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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <stdbool.h>
#include <unistd.h>
#include <termios.h>
#include <limits.h>
#include <time.h>
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <cglm/cglm.h>
#include "hash.h"
#include "base.h"
#include "display.h"
#include "menus.h"
#include "proj.h"
#include "move.h"
#include "maeth.h"
#include "entities.h"
// ------------------------------------------------------------------------------------------------------------------------------------------------ //
bool is_colliding_with_map(cube_0* cb) {
for(int k = 0; k < current_room->map_size; k++) {
for(int d = 0; d < 8; d++) {
if(distance_pt_cube_0_3d(cb->x+cb->w*(d%2==0), cb->y+cb->h*((d/2)%2==0), cb->z+cb->d*((d/4)%2==0), current_room->map[k]) <= 0.001) {
return true;
}
}
}
return false;
}
bool is_colliding_with_tp(cube_0* cb) {
for(int k = 0; k < current_room->tps_size; k++) {
for(int d = 0; d < 8; d++) {
if(distance_pt_cube_0_3d(cb->x+cb->w*(d%2==0), cb->y+cb->h*((d/2)%2==0), cb->z+cb->d*((d/4)%2==0), current_room->tps[k]->hitbox) <= 0.001) {
return true;
}
}
}
return false;
}
bool is_colliding_with_ent_sp(cube_0* cb, int allowed) {
for(int k = 0; k < current_room->ent_len; k++) {
for(int d = 0; d < 8; d++) {
if(
current_room->ents[k]->entity_type == allowed &&
(cb->x != current_room->ents[k]->pos->x || cb->y != current_room->ents[k]->pos->y || cb->z != current_room->ents[k]->pos->z) &&
distance_pt_cube_0_3d(cb->x+cb->w*(d%2==0), cb->y+cb->h*((d/2)%2==0), cb->z+cb->d*((d/4)%2==0), current_room->ents[k]->pos) <= 0.001
) {
return true;
}
}
}
return false;
}
// ------------------------------------------------------------------------------------------------------------------------------------------------ //
static double choffx, choffz;
void update_entity(entity* ent, float dtime) {
(*ent->updatePos)(ent->pos->x, ent->pos->y, ent->pos->z, ent->pos->w, ent->pos->h, ent->pos->d, ent->pos->hz_angle, ent->pos->vt_angle, dtime, ent, ent->pos);
}
void update_entities(float dtime, room* rtd) {
if(rtd != NULL) {
for(int k = 0; k < rtd->ent_len; k++) {
if(rtd->ents[k]->updatePos != NULL) {
//printf("e\n");
update_entity(rtd->ents[k], dtime);
}
}
}
}
void update_nearby_entities(float dtime, int render_distance) {
for(int w = -render_distance; w <= render_distance; w++) {
for(int h = -render_distance; h <= render_distance; h++) {
choffx = 2*room_width*w;
choffz = 2*room_depth*h;
update_entities(dtime, hashtbl_find_opt(visited, player_chx+w, player_chy+h));
}
}
}
// ------------------------------------------------------------------------------------------------------------------------------------------------ //
void speen(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ret->hz_angle += ((double)dtime)*1.5;
}
// metad1 = main proj speed
// metad2 = shot proj speed
// metad3 = shot proj freq
// metad4 = shot proj time to live
void speen2(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ret->hz_angle += ((double)dtime)*ent->metad3;
if((int)(5.0*ret->hz_angle) != (int)(5.0*(ret->hz_angle - ((double)dtime)*22.5))) {
double dx = (x+w/2 - (camx-choffx));
double dy = (y+h/2 - (camy));
double dz = (z+d/2 - (camz-choffz));
double total = sqrt(dx*dx + dy*dy + dz*dz);
dx = ent->metad2*dx/total;
dy = ent->metad2*dy/total;
dz = ent->metad2*dz/total;
appendProj(x+w/2+choffx, y+h/2, z+d/2+choffz, 0.1, 0.1, 0.1, -dx, -dy, -dz, 0.0, 0.0, 0.0, 255, 0, 0, 10, ent->metad4);
}
double dx = (x+w/2 - (camx-choffx));
double dy = (y+h/2 - (camy));
double dz = (z+d/2 - (camz-choffz));
double total = sqrt(dx*dx + dy*dy + dz*dz);
dx = ent->metad1*dx/total;
dy = ent->metad1*dy/total;
dz = ent->metad1*dz/total;
ret->x -= dtime*dx;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->x += dtime*dx;
}
ret->y -= dtime*dy;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->y += dtime*dy;
}
ret->z -= dtime*dz;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->z += dtime*dz;
}
}
// metad{1,2,3} = velocities
// metad{4,5,6} = accelerations
// metad7 = cooldown
// metad8 = ttl
// metad9 = remaining
// metai{1,2,3} = 1000*proj_size_{x,y,z}
// metai4 = dmg
void gunning(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ent->metad9 -= (double)dtime;
if(ent->metad9 <= 0.0) {
ent->metad9 = ent->metad7;
double psizex = (double)(ent->metai1)/1000.0;
double psizey = (double)(ent->metai2)/1000.0;
double psizez = (double)(ent->metai3)/1000.0;
appendProj(
x+w/2.0-psizex/2.0, y+h/2.0-psizey/2.0, z+d/2.0-psizez/2.0,
psizex, psizey, psizez,
ent->metad1, ent->metad2, ent->metad3,
ent->metad4, ent->metad5, ent->metad6,
255, 128, 128,
ent->metai4, ent->metad8
);
}
}
void speen3(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ret->vt_angle += ((double)dtime)*2.5;
}
// metad{1,2,3} = og pos
// metad{4,5,6} = amplitudes
// metai1 = frequency multiplier
// metai2 = frequency divider
// metai3 = phase
void moving_xyz(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
bool canMove = (ent->metai5 == -1) || xor(buttonSwitch[ent->metai5], (bool)ent->metai4);
if(canMove) {
ret->x = ent->metad1 + ent->metad4*cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0));
ret->y = ent->metad2 + ent->metad5*cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0));
ret->z = ent->metad3 + ent->metad6*cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0));
}
//printf("%lf %lf %lf\n", ret->x, ret->y, ret->z);
}
// metad{1,2,3} = og pos
// metad{4,5,6} = speed
// metad{7,8,9} = max_delta
// metai1 = x_side (+/- 1)
// metai2 = y_side (+/- 1)
// metai3 = z_side (+/- 1)
void moving_xyz_line(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
bool canMove = (ent->metai5 == -1) || xor(buttonSwitch[ent->metai5], (bool)ent->metai4);
if(canMove) {
ret->x += (ent->metai1)*ent->metad4*dtime;
if(absf(ent->metad1 - ret->x) > ent->metad7) {
//printf("-x-\n");
ent->metai1 *= (-1);
ret->x += (ent->metai1)*ent->metad4*dtime;
}
ret->y += (ent->metai2)*ent->metad5*dtime;
if(absf(ent->metad2 - ret->y) > ent->metad8) {
//printf("-y-\n");
ent->metai2 *= (-1);
ret->y += (ent->metai2)*ent->metad5*dtime;
}
ret->z += (ent->metai3)*ent->metad6*dtime;
if(absf(ent->metad3 - ret->z) > ent->metad9) {
//printf("-z-\n");
ent->metai3 *= (-1);
ret->z += (ent->metai3)*ent->metad6*dtime;
}
}
}
// metai1 = id of the interface
// metai2 = price
// metai3 = doPay
// metach1 = text (stored here to free() easily)
void subtitle_text_box(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
if(distance_pt_cube_0_3d_infinite(camx+player_chx*room_width*2, camy, camz+player_chy*room_depth*2, ret) <= 1.5) {
gl_drawString(fShader, ent->metach1, 0.0f, -0.7f, 0.03f, ret->red, ret->green, ret->blue, 0.003f, 0);
}
}
// metad1 = time ON
// metad2 = time OFF
// metad3 = current time left
// metai1 = 0 if OFF, 1 if ON
void beating_block(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ent->metad3 -= dtime;
if(ent->metad3 <= 0.0) {
if(ent->metai1) {
ent->metad3 = ent->metad2;
} else {
ent->metad3 = ent->metad1;
}
ent->metai1 = 1-ent->metai1;
}
}
// metad1 = hz_speed
// metad2 = vt_speed
void spinning_platform(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ret->hz_angle += ent->metad1*dtime;
ret->vt_angle += ent->metad2*dtime;
}
// metai1 = default state
// metad1 = remaining time
// metad2 = activation time
void math_block(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
if(ent->metad1 > -0.9) {
ent->metad1 = maxd(ent->metad1 - (double)dtime, 0.0);
}
if(mathResult == FAILURE && ent->metad1 != 0.0) {
ent->metad1 = 0.0;
//mathResult = IDLE;
}
}
// metad1 = hz_speed (// to y)
// metad2 = vt_speed (// to x)
// metad7 = norm of HZ deviation
// metad8 = norm of VT deviation
// metai1 = dps
void lava_postStep(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
ret->hz_angle += ((double)dtime)*ent->metad1;
ret->vt_angle += ((double)dtime)*ent->metad2;
ret->x = ent->metad4+(ent->metad7)*cos(ret->hz_angle);
ret->y = ent->metad5+(ent->metad8)*sin(ret->vt_angle);
ret->z = ent->metad6+(ent->metad7)*sin(ret->hz_angle)+(ent->metad8)*cos(ret->vt_angle);
if(distance_pt_cube_0_3d_infinite(camx, camy, camz, ret) <= min_dist) {
ret->hz_angle -= ((double)dtime)*ent->metad1;
ret->vt_angle -= ((double)dtime)*ent->metad2;
ret->x = ent->metad4+(ent->metad7)*cos(ret->hz_angle);
ret->y = ent->metad5+(ent->metad8)*sin(ret->vt_angle);
ret->z = ent->metad6+(ent->metad7)*sin(ret->hz_angle)+(ent->metad8)*cos(ret->vt_angle);
updateF(ret, (double)dtime, ent);
}
}
// metad1 = vx
// metad2 = vy
// metad3 = vz
// metad4 = friction
// metad5 = mass (kg)
void movableCrate_postStep(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
if(y < -48) {
*(ent->hitpoints) = 0;
} else {
//printf("(%lf %lf %lf)\n", ent->metad1, ent->metad2, ent->metad3);
// --P->
ent->metad2 += -((double)dtime)*(gravity_factor*ent->metad5);
ret->x += dtime*ent->metad1;
if(
absf(ent->metad1) < 0.04 ||
is_colliding_with_map(ret) || is_colliding_with_tp(ret) || is_colliding_with_ent_sp(ret, 10) ||
distance_pt_cube_0_3d_infinite(camx, camy, camz, ret) <= min_dist
) {
ret->x -= dtime*ent->metad1;
ent->metad1 = 0.0;
}
ret->y += dtime*ent->metad2;
if(
absf(ent->metad2) < 0.04 ||
is_colliding_with_map(ret) || is_colliding_with_tp(ret) || is_colliding_with_ent_sp(ret, 10) ||
distance_pt_cube_0_3d_infinite(camx, camy, camz, ret) <= min_dist
) {
ret->y -= dtime*ent->metad2;
ent->metad2 = 0.0;
}
ret->z += dtime*ent->metad3;
if(
absf(ent->metad3) < 0.04 ||
is_colliding_with_map(ret) || is_colliding_with_tp(ret) || is_colliding_with_ent_sp(ret, 10) ||
distance_pt_cube_0_3d_infinite(camx, camy, camz, ret) <= min_dist
) {
ret->z -= dtime*ent->metad3;
ent->metad3 = 0.0;
}
ent->metad1 *= (1.0 - ent->metad4*((double)(dtime)));
ent->metad2 *= (1.0 - ent->metad4*((double)(dtime)));
ent->metad3 *= (1.0 - ent->metad4*((double)(dtime)));
}
}
// metai1 = button freq
// metai2 = is triggered (0/1)
void movCrateButton_postStep(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
bool isIn = false;
for(int k = 0; k < current_room->ent_len*(1-isIn); k++) {
for(int d = 0; d < 8*(1-isIn); d++) {
if(
current_room->ents[k]->entity_type == 10 &&
distance_pt_cube_0_3d(ret->x+ret->w*(d%2==0), ret->y+ret->h*((d/2)%2==0), ret->z+ret->d*((d/4)%2==0), current_room->ents[k]->pos) <= 0.001
) {
isIn = true;
ent->metai2 = 1;
if(!buttonSwitch[ent->metai1]) {
//printf("In %d\n", ent->metai1);
buttonSwitch[ent->metai1] = true;
buttonTimes[ent->metai1] = -1.0;
}
}
}
}
if(!isIn && ent->metai2 != 0) {
ent->metai2 = 0;
buttonSwitch[ent->metai1] = false;
}
}
void movableCrate_onHit(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
//printf("(+%lf, +%lf)\n", camvx, camvz);
updateF_movableCrate(ret, (double)dtime, ent);
}
void lava_onHit(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
player_hp -= ent->metai1;
}
void active_math(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
if(ent->metad1 == 0.0) {
mathSignal = true;
ent->metad1 = ent->metad2;
}
}
void spinning_translate(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
// ye
}
// metai1 = button freq (same for blocks)
// matei2 = trigger state (0/1) ('OFF state' for blocks)
// metad1 = button activation time
void update_button(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
if(!buttonSwitch[ent->metai1]) {
buttonSwitch[ent->metai1] = true;
buttonTimes[ent->metai1] = ent->metad1;
buttonMaxT[ent->metai1] = ent->metad1;
}
}
void detectHit(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
if(ret->red == 193) {
ret->red = 0;
ret->green = 192;
ret->blue = 0;
coins += *hp;
player_hp -= (*dmg);
if(*dmg != 0) {
fade_dmg = 255;
}
*hp = 0;
}
}
void money(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
coins += *hp;
player_hp -= (*dmg);
if(*dmg != 0) {
fade_dmg = 255;
}
*hp = 0;
}
void translatePlayer(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
bool canMove = (ent->metai5 == -1) || xor(buttonSwitch[ent->metai5], (bool)ent->metai4);
if(canMove) {
double dx = ent->metad4*(cos((double)(ent->metai1*(sim_time+(double)dtime)/ent->metai2 + ent->metai3*3.14159/180.0))-cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0)));
double dy = ent->metad5*(cos((double)(ent->metai1*(sim_time+(double)dtime)/ent->metai2 + ent->metai3*3.14159/180.0))-cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0)));
double dz = ent->metad6*(cos((double)(ent->metai1*(sim_time+(double)dtime)/ent->metai2 + ent->metai3*3.14159/180.0))-cos((double)(ent->metai1*sim_time/ent->metai2 + ent->metai3*3.14159/180.0)));
//fx += dx/(dtime*dtime);
//fy += dy/(dtime*dtime);
//fz += dz/(dtime*dtime);
camvx += dx/(dtime);
camvy += dy/(dtime);
camvz += dz/(dtime);
}
}
void translatePlayerLine(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
bool canMove = (ent->metai5 == -1) || xor(buttonSwitch[ent->metai5], (bool)ent->metai4);
if(canMove) {
double dx = (ent->metai1)*ent->metad4*dtime;
double dy = (ent->metai2)*ent->metad5*dtime;
double dz = (ent->metai3)*ent->metad6*dtime;
//fx += dx/(dtime*dtime);
//fy += dy/(dtime*dtime);
//fz += dz/(dtime*dtime);
camvx += dx/(dtime);
camvy += dy/(dtime);
}
}
void go_to_player(double x, double y, double z, double w, double h, double d, double hz_angle, double vt_angle, float dtime, entity* ent, cube_0* ret) {
double dx = (x+w/2 - (camx-choffx));
double dy = (y+h/2 - (camy));
double dz = (z+d/2 - (camz-choffz));
double total = sqrt(dx*dx + dy*dy + dz*dz);
dx = 11.0*dx/total;
dy = 11.0*dy/total;
dz = 11.0*dz/total;
ret->x -= dtime*dx;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->x += dtime*dx;
}
ret->y -= dtime*dy;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->y += dtime*dy;
}
ret->z -= dtime*dz;
if(is_colliding_with_map(ret) || is_colliding_with_tp(ret)) {
ret->z += dtime*dz;
}
//if((int)(ret->x+ret->y+ret->z) != (int)(ret->x+ret->y+ret->z-dx-dy-dz)) {
//}
}
void explodeOnHit(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
player_hp -= (*dmg);
if(*dmg != 0) {
fade_dmg = 255;
}
*hp = 0;
}
// metai1 = id of the interface
// metach1 = text (stored here to free() easily)
void pop_text(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
interface_set(ent->metai1);
}
// metai1 = id of the interface
// metai2 = room count
// metach1 = dest folder
// metach2 = text (stored here to free() easily)
void pop_and_tp(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
interface_set(ent->metai1);
newRoomName = ent->metach1;
newRoomCount = ent->metai2;
//printf("%s %d\n", newRoomName, newRoomCount);
switchRoom = true;
}
// metai1 = id of the interface
// metai2 = price
// metai3 = doPay
// metach1 = text (stored here to free() easily)
void locker(float dtime, int* hp, int* dmg, entity* ent, cube_0* ret) {
//printf("%d %d %d <<<<\n", ent->metai1, ent->metai2, ent->metai3);
//interface_set(ent->metai1);
if(coins >= ent->metai2) {
if(ent->metai3) {
coins -= ent->metai2;
}
*hp = 0;
}
}
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