3dtoys/maze.c

#include "haloo3d/haloo3d.h"
#include "haloo3d/haloo3dex_console.h"
#include "haloo3d/haloo3dex_easy.h"
#include "haloo3d/haloo3dex_gen.h"
// #include "haloo3d/haloo3dex_img.h"
#include "haloo3d/haloo3dex_obj.h"
#include "haloo3d/haloo3dex_print.h"

#include "unigi/unigi.headers/src/main.h"
#include "unigi/unigi.platform.sdl1/src/main.c"

#include "ecs2.h"
// #include "ecs2_comps.h"
#include "keys.h"

#include <stdlib.h>

// INteresting flags for performance comparisons
#define FASTFILL

#define WIDTH 480
#define HEIGHT 300
#define ASPECT ((float)WIDTH / HEIGHT)
#define SCREENSCALE 2
#define SWIDTH (WIDTH * SCREENSCALE)
#define SHEIGHT (HEIGHT * SCREENSCALE)
#define NEARCLIP 0.01
#define FARCLIP 100.0
#define LIGHTANG -MPI / 4.0
#define AVGWEIGHT 0.85

// Game options
#define MAZESIZE 15
#define HSCALE 1.5

// Maze grows in the positive direction
#define MAZENORTH 1
#define MAZEEAST 2
#define MAZEVISIT 4

// When you rightshift these values, you "turn right".
// NOTE: north in this case is "towards the screen" because it moves in the
// positive direction. In this case, it's actually wound in the opposite
// direction of what you'd expect
#define DIRNORTH 8
#define DIRWEST 4
#define DIRSOUTH 2
#define DIREAST 1

#define TURNRIGHT(d) (d == 1 ? 8 : (d >> 1))
#define TURNLEFT(d) (d == 8 ? 1 : (d << 1))
#define STACKPUSH(s, t, v) s[t++] = v;

// Store all the values users can change at the beginning
float ditherstart = -1;
float ditherend = 8;
float fov = 90.0;
float minlight = 0.25;
int fps = 30;
uint16_t sky = 0xF000;

struct vec2i dirtovec(uint8_t dir) {
  struct vec2i result;
  switch (dir) {
  case DIREAST:
    vec2i(result.v, 1, 0);
    break;
  case DIRWEST:
    vec2i(result.v, -1, 0);
    break;
  case DIRNORTH:
    vec2i(result.v, 0, 1);
    break;
  case DIRSOUTH:
    vec2i(result.v, 0, -1);
    break;
  default:
    vec2i(result.v, 0, 0);
  }
  return result;
}

int maze_visited(uint8_t *maze, int x, int y, int size) {
  return (maze[x + y * size] & MAZEVISIT) > 0;
}

int maze_connected(uint8_t *maze, int x, int y, int size, uint8_t move) {
  // eprintf("CHECKING DIR %d at (%d,%d), it is %d\n", move, x, y,
  // maze[x + y * size]);
  if (move == DIREAST) {
    return (maze[x + y * size] & MAZEEAST) == 0;
  } else if (move == DIRWEST) {
    return (x > 0) && ((maze[x - 1 + y * size] & MAZEEAST) == 0);
  } else if (move == DIRNORTH) {
    return (maze[x + y * size] & MAZENORTH) == 0;
  } else if (move == DIRSOUTH) {
    return (y > 0) && ((maze[x + (y - 1) * size] & MAZENORTH) == 0);
  }
  return 0;
}

// Calculate which direction from the given position would have you
// facing down the longest hallway
uint8_t maze_longesthallway(uint8_t *maze, int size, int x, int y) {
  uint8_t face = DIRNORTH;
  uint8_t maxface = face;
  uint16_t maxdist = 0;
  while (face) {
    uint16_t dist = 0;
    int dx = x, dy = y;
    struct vec2i move = dirtovec(face);
    while (maze_connected(maze, dx, dy, size, face)) {
      dx += move.x;
      dy += move.y;
      dist++;
    }
    if (dist > maxdist) {
      maxface = face;
      maxdist = dist;
    }
    face >>= 1;
  }
  return maxface;
}

// Generate a (square) maze. Utilize one bit of the maze (#2) to
// indicate whether it is visited
void maze_generate(uint8_t *maze, int size, struct vec2i *start,
                   struct vec2i *end) {
  const int mazesquare = (size) * (size);
  for (int i = 0; i < mazesquare; i++) {
    maze[i] = MAZENORTH | MAZEEAST;
  }
  int *mazestack;
  mallocordie(mazestack, sizeof(int) * mazesquare);
  for (int i = 0; i < size * size; i++) {
    mazestack[i] = -1;
  }
  // Push current cell onto stack, mark as visited
  start->x = rand() % size;
  start->y = rand() % size;
  int x = start->x;
  int y = start->y;
  int mazetop = 0;
  int maxmazetop = 0;
  STACKPUSH(mazestack, mazetop, x + y * size);
  maze[x + y * size] |= MAZEVISIT;
  uint8_t visitable[4];
  int visittop = 0;

  // Now let's make a maze!
  while (mazetop) {
    // The end of the maze is the furthest into the stack we go. This should
    // somewhat maximize the complexity of start to finish?
    if (mazetop > maxmazetop) {
      end->x = x;
      end->y = y;
      maxmazetop = mazetop;
    }
    mazetop--;
    visittop = 0;
    x = mazestack[mazetop] % size;
    y = mazestack[mazetop] / size;
    if (x > 0 && !maze_visited(maze, x - 1, y, size)) {
      visitable[visittop++] = DIRWEST;
    }
    if (x < size - 1 && !maze_visited(maze, x + 1, y, size)) {
      visitable[visittop++] = DIREAST;
    }
    if (y > 0 && !maze_visited(maze, x, y - 1, size)) {
      visitable[visittop++] = DIRSOUTH;
    }
    if (y < size - 1 && !maze_visited(maze, x, y + 1, size)) {
      visitable[visittop++] = DIRNORTH;
    }
    // You can generate a random location!
    if (visittop) {
      // Readd ourselves, we're moving
      STACKPUSH(mazestack, mazetop, x + y * size);
      uint8_t dir = visitable[rand() % visittop];
      struct vec2i movedir = dirtovec(dir);
      int nx = x + movedir.x;
      int ny = y + movedir.y;
      // Trust that the visitable array is always valid
      if (dir == DIREAST) { // Tear down east wall
        maze[x + y * size] &= ~MAZEEAST;
      } else if (dir == DIRWEST) { // Move left and tear down east wall
        maze[(x - 1) + y * size] &= ~MAZEEAST;
      } else if (dir == DIRNORTH) { // tear down north wall
        maze[x + y * size] &= ~MAZENORTH;
      } else if (dir == DIRSOUTH) { // move down and tear down north wall
        maze[x + (y - 1) * size] &= ~MAZENORTH;
      }
      // Push onto stack and set visited
      STACKPUSH(mazestack, mazetop, nx + ny * size);
      maze[nx + ny * size] |= MAZEVISIT;
    }
  }

  eprintf("Maze generate: %d,%d -> %d,%d maxdepth: %d\n", start->x, start->y,
          end->x, end->y, maxmazetop);

  free(mazestack);
}

void maze_wall_generate(uint8_t *maze, int size, haloo3d_obj *obj) {
  // Simple: for each cell, we check if north or east is a wall. If so,
  // generate it. Also, generate walls for the south and west global wall
  for (int y = 0; y < size; y++) {
    for (int x = 0; x < size; x++) {
      if (!maze_connected(maze, x, y, size, DIREAST)) {
        haloo3d_gen_grid_quad(obj, x, y, dirtovec(DIREAST));
      }
      if (!maze_connected(maze, x, y, size, DIRNORTH)) {
        haloo3d_gen_grid_quad(obj, x, y, dirtovec(DIRNORTH));
      }
    }
  }
  for (int i = 0; i < size; i++) {
    haloo3d_gen_grid_quad(obj, i, 0, dirtovec(DIRSOUTH));
    haloo3d_gen_grid_quad(obj, 0, i, dirtovec(DIRWEST));
  }
}

// Turning into a blob? IDK. Maybe certain things should be
// global state, which is this.
typedef struct {
  // float timedelta;
  int fps;
  uint8_t state;
  uint8_t maze[MAZESIZE * MAZESIZE];
  // int size;
  // A suggested start and end. The end is the actual
  // end, where we put the ending indicator
  struct vec2i start;
  struct vec2i end;
  // Some simple calcs for you to use
  mfloat_t cellsize;
} worldstate;

enum {
  WSTATE_INIT = 0,
  WSTATE_SPINUP = 1,
  WSTATE_GAMEPLAY = 2,
  WSTATE_GAMEOVER = 3,
  WSTATE_SPINDOWN = 4
};

// A component that stores a position and a facing direction
// as an angle
typedef struct {
  struct vec3 pos;
  struct vec2 rot; // x is yaw, y is pitch
} ecs_placement;

// A component representing movement through the scene.
// typedef struct {
//   struct vec3 posvel;
//   mfloat_t yawvel;
// } ecs_movement;

// A component which links back to a camera
typedef struct {
  haloo3d_camera *camera;
} ecs_camera;

// A component which allows automatic navigation
// of position through the use of timers.
typedef struct {
  struct vec3 dest;
  int timer;
} ecs_autonav;

// A component which allows automatic rotation
// through the use of timers.
typedef struct {
  struct vec2 dest; // x is yaw, y is pitch
  int timer;
} ecs_autorotate;

// A component which has pointers back to global world state.
typedef struct {
  worldstate *state;
} ecs_worldstate;

// A component which holds onto data specifically for world
// entities. You can think of it as private data so people
// can't poke at the worldstate data
typedef struct {
  worldstate *state;
  haloo3d_obj_instance *walls;
  uint16_t timer;
} ecs_world;

// void sys_move_placement(ecs_movement *m, ecs_placement *p) {
//   vec3_add(p->pos.v, p->pos.v, m->posvel.v);
//   p->yaw += m->yawvel;
// }

void sys_autonav(ecs_autonav *nav, ecs_placement *p) {
  if (nav->timer <= 0) {
    p->pos = nav->dest;
    return;
  }
  mfloat_t xdiff = nav->dest.x - p->pos.x;
  mfloat_t ydiff = nav->dest.y - p->pos.y;
  mfloat_t zdiff = nav->dest.z - p->pos.z;
  p->pos.x += xdiff / nav->timer;
  p->pos.y += ydiff / nav->timer;
  p->pos.z += zdiff / nav->timer;
  nav->timer--;
}

void sys_autorotate(ecs_autorotate *arot, ecs_placement *p) {
  if (arot->timer <= 0) {
    p->rot = arot->dest;
    return;
  }
  mfloat_t xdiff = arot->dest.x - p->rot.x;
  mfloat_t ydiff = arot->dest.y - p->rot.y;
  p->rot.x += xdiff / arot->timer;
  p->rot.y += ydiff / arot->timer;
  arot->timer--;
}

void sys_camera(ecs_camera *cam, ecs_placement *p) {
  cam->camera->pos = p->pos;
  cam->camera->yaw = p->rot.x;
  cam->camera->pitch = p->rot.y;
}

void sys_world(ecs_world *w) {
  float scaleleft;
  const int spinspeed = w->state->fps * 4 / 5;
  switch (w->state->state) {
  case WSTATE_INIT:
    maze_generate(w->state->maze, MAZESIZE, &w->state->start, &w->state->end);
    maze_wall_generate(w->state->maze, MAZESIZE, w->walls->model);
    eprintf("INIT MAZE COMPLETE, spinning up walls\n");
    w->state->state = WSTATE_SPINUP;
    w->timer = spinspeed;
    w->walls->scale.y = 0;
    break;
  case WSTATE_SPINUP:
    // Bring walls up, timer down
    scaleleft = 1 - w->walls->scale.y;
    w->walls->scale.y += scaleleft / w->timer;
    w->timer--;
    if (w->timer == 0) {
      eprintf("SPINUP COMPLETE, starting gameplay\n");
      w->walls->scale.y = 1;
      // Start gameplay. We won't know when it's done
      w->state->state = WSTATE_GAMEPLAY;
    }
    break;
  case WSTATE_GAMEOVER:
    w->timer = spinspeed;
    eprintf("GAME OVER, spinning down\n");
    w->state->state = WSTATE_SPINDOWN;
    break;
  case WSTATE_SPINDOWN:
    // Bring walls sown, timer down
    scaleleft = w->walls->scale.y;
    w->walls->scale.y -= scaleleft / w->timer;
    w->timer--;
    if (w->timer == 0) {
      eprintf("SPINDOWN COMPLETE, reinitializing\n");
      w->walls->scale.y = 0;
      // Start gameplay. We won't know when it's done
      w->state->state = WSTATE_INIT;
    }
    break;
  }
}

// // A general position within the maze, and a pointer to the maze itself.
// // Can be used to traverse the maze
// typedef struct {
//   uint8_t *maze;
//   struct vec2i pos; // tile position within maze
//   int size;
//   uint8_t dir; // facing dir (see DIREAST/DIRSOUTH/etc);
// } ecs_maze;

// // Use a timer and a destination to move simply through
// typedef struct {
//
// } ecs_mazemove;

// State for tracking ai moving through the maze.
typedef struct {
  uint8_t state;
  // uint8_t nextdir;
  uint32_t timer;
} ecs_smartai;

// typedef struct {
//   uint8_t *maze;
//   // What state the game is in, such as game initialize, animation, running,
//   etc uint8_t state;
// } ecs_world;

// everything in the maze is controlled by the CPU. As such, movement
// is as simple as "go here by this time". No need to complicate the
// components?
/*
static void sys_ecs_smartai(ecs_smartai *smartai, ecs_maze *maze,
                            ecs_moveto *mt, ecs_rotateto *rt) {
  int actiontime = fps / 2;
  // Some states are triggered based on the timer
  if (smartai->timer > 0) {
    smartai->timer--;
  }
  // The rotation is delayed to make it feel a bit more like the original
  // maze, which I think determined rotation and direction upon entering
  // a tile. I instead calculate that in the middle of the tile. It doesn't
  // really line up like it does on the windows screensaver but it's
  // close enough for me.
  if (smartai->timer == 0) {
    if (smartai->state == 1) {
      eprintf("TURNING RIGHT\n");
      rt->dstrot.x = rt->dstrot.x + MPI_2;
      rt->timer = actiontime;
      maze->dir = TURNRIGHT(maze->dir);
      smartai->state = 0;
    } else if (smartai->state == 2) {
      eprintf("TURNING LEFT\n");
      rt->dstrot.x = rt->dstrot.x - MPI_2;
      rt->timer = actiontime;
      maze->dir = TURNLEFT(maze->dir);
      smartai->state = 0;
    }
  }
  // Only decide to do things if you're not moving anymore. Movement is the most
  // important thing
  if (mt->timer == 0) {
    eprintf("SMARTAI: %d TIMER: %d DIR: %d POS: (%f, %f)\n", smartai->state,
            smartai->timer, maze->dir, mt->pos.x, mt->pos.z);
    // Player can only move forward if there's nothing in front of them
    if (maze_connected(maze->maze, maze->pos.x, maze->pos.y, maze->size,
                       maze->dir)) {
      struct vec2i movement = dirtovec(maze->dir);
      maze->pos.x += movement.x;
      maze->pos.y += movement.y;
      mt->timer = actiontime;
      mt->dst.x += HSCALE * movement.x;
      mt->dst.z += HSCALE * movement.y;
      smartai->state = 0;
    }
    if (smartai->timer <= 0) {
      // Ok we might be moving, we might not be. Let's go ahead and calculate
      // rotation based on the FUTURE direction we want to turn.
      uint8_t rightdir = TURNRIGHT(maze->dir);
      uint8_t leftdir = TURNLEFT(maze->dir);
      if (maze_connected(maze->maze, maze->pos.x, maze->pos.y, maze->size,
                         rightdir)) {
        // Always choose right over left
        smartai->state = 1;
        smartai->timer = 2 * actiontime / 5;
        eprintf("WILL TURN RIGHT TO: %d\n", rightdir);
      } else if (!maze_connected(maze->maze, maze->pos.x, maze->pos.y,
                                 maze->size, maze->dir)) {
        // We only move left if the player can't move forward or right
        smartai->state = 2;
        smartai->timer = 2 * actiontime / 5;
        eprintf("WILL TURN LEFT (stuck) TO: %d\n", leftdir);
      }
    }
  }
}
*/

// static void sys_ecs_world(ecs_world *world, ecs_maze *maze, ecs_moveto *mt,
// ecs_rotateto *rt) {}

// Setup ECS system for our game
ECS_START(mecs)
ECS_COMPONENT(ecs_worldstate);
ECS_COMPONENT(ecs_world);
ECS_COMPONENT(ecs_autonav);
ECS_COMPONENT(ecs_autorotate);
ECS_COMPONENT(ecs_placement);
ECS_COMPONENT(ecs_camera);
// ECS_COMPONENT(ecs_moveto);
// ECS_COMPONENT(ecs_rotateto);
// ECS_COMPONENT(ecs_smartai);
// ECS_COMPONENT(ecs_camera);
// ECS_COMPONENT(ecs_maze);
ECS_END(mecs)

// And then a copy of the components here... that sucksssss
ECS_CID(ecs_worldstate, 0);
ECS_CID(ecs_world, 1);
ECS_CID(ecs_autonav, 2);
ECS_CID(ecs_autorotate, 3);
ECS_CID(ecs_placement, 4);
ECS_CID(ecs_camera, 5);

// ECS_CID(ecs_moveto, 0);
// ECS_CID(ecs_rotateto, 1);
// ECS_CID(ecs_smartai, 2);
// ECS_CID(ecs_camera, 3);
// ECS_CID(ecs_maze, 4);

ECS_SYSTEM1(mecs, sys_world, ecs_world);
ECS_SYSTEM2(mecs, sys_autonav, ecs_autonav, ecs_placement);
ECS_SYSTEM2(mecs, sys_autorotate, ecs_autorotate, ecs_placement);
ECS_SYSTEM2(mecs, sys_camera, ecs_camera, ecs_placement);
// ECS_SYSTEM1(mecs, sys_ecs_moveto, ecs_moveto);
// ECS_SYSTEM1(mecs, sys_ecs_rotateto, ecs_rotateto);
// ECS_SYSTEM2(mecs, sys_ecs_moveto_camera, ecs_moveto, ecs_camera);
// ECS_SYSTEM2(mecs, sys_ecs_rotateto_camera, ecs_rotateto, ecs_camera);
// ECS_SYSTEM4(mecs, sys_ecs_smartai, ecs_smartai, ecs_maze, ecs_moveto,
//             ecs_rotateto);

void init_floortexture(haloo3d_fb *floort) {
  // uint16_t cols[4] = {0xFD93, 0xFB83, 0xFFFF}; //, 0xFDDD};
  uint16_t cols[1] = {0xFD93};
  haloo3d_fb_init_tex(floort, 64, 64);
  haloo3d_apply_alternating(floort, cols, 1);
  haloo3d_apply_noise(floort, NULL, 1.0 / 6);
}

void init_ceilingtexture(haloo3d_fb *ceilt) {
  uint16_t cols[1] = {0xFFFF}; //, 0xFDDD};
  // haloo3d_apply_alternating(floort, cols, 2);
  haloo3d_fb_init_tex(ceilt, 64, 64);
  haloo3d_apply_alternating(ceilt, cols, 1);
  haloo3d_apply_noise(ceilt, NULL, 1.0 / 4);
  haloo3d_apply_brick(ceilt, 16, 8, 0xFAAA);
}

void init_walltexture(haloo3d_fb *wallt) {
  haloo3d_fb_init_tex(wallt, 64, 64);
  uint16_t wallcols[] = {0xFA22};
  haloo3d_apply_alternating(wallt, wallcols, 1);
  haloo3d_apply_noise(wallt, NULL, 1.0 / 8);
  haloo3d_apply_brick(wallt, 18, 13, 0xFEEE);
  // haloo3d_apply_brick(wallt, 14, 8, 0xFD94);
  haloo3d_apply_noise(wallt, NULL, 1.0 / 8);
}

int main() { // int argc, char **argv) {

  haloo3d_easystore storage;
  haloo3d_easystore_init(&storage);

  haloo3d_fb screen;
  haloo3d_fb_init(&screen, SWIDTH, SHEIGHT);

  haloo3d_easyrender render;
  haloo3d_easyrender_init(&render, WIDTH, HEIGHT);
  render.camera.pos.y = 0.5;
  render.tprint.fb = &screen;
  eprintf("Initialized renderer\n");

  haloo3d_easytimer frametimer, sdltimer, filltimer;
  haloo3d_easytimer_init(&frametimer, AVGWEIGHT);
  haloo3d_easytimer_init(&sdltimer, AVGWEIGHT);
  haloo3d_easytimer_init(&filltimer, AVGWEIGHT);

  // Load the junk + generate stuff
  haloo3d_obj *flooro = haloo3d_easystore_addobj(&storage, "floor");
  haloo3d_obj *ceilo = haloo3d_easystore_addobj(&storage, "ceiling");
  haloo3d_obj *wallo = haloo3d_easystore_addobj(&storage, "walls");
  haloo3d_fb *floort = haloo3d_easystore_addtex(&storage, "floor");
  haloo3d_fb *ceilt = haloo3d_easystore_addtex(&storage, "ceiling");
  haloo3d_fb *wallt = haloo3d_easystore_addtex(&storage, "walls");

  haloo3d_gen_plane(flooro, MAZESIZE);
  haloo3d_gen_plane(ceilo, MAZESIZE);
  haloo3d_gen_grid(wallo, MAZESIZE, 0);
  init_floortexture(floort);
  init_ceilingtexture(ceilt);
  init_walltexture(wallt);

  eprintf("Initialized models and textures\n");

  worldstate wstate;
  memset(&wstate, 0, sizeof(worldstate));
  wstate.fps = fps;
  wstate.state = WSTATE_INIT;
  wstate.cellsize = HSCALE;

  // Lighting. Note that for performance, the lighting is always calculated
  // against the base model, and is thus not realistic if the object rotates in
  // the world. This can be fixed easily, since each object gets its own
  // lighting vector, which can easily be rotated in the opposite direction of
  // the model
  struct vec3 light;
  vec3(light.v, 0, -MCOS(LIGHTANG), MSIN(LIGHTANG));

  haloo3d_obj_instance *floori =
      haloo3d_easyrender_addinstance(&render, flooro, floort);
  haloo3d_obj_instance *walli =
      haloo3d_easyrender_addinstance(&render, wallo, wallt);
  haloo3d_obj_instance *ceili =
      haloo3d_easyrender_addinstance(&render, ceilo, ceilt);
  floori->cullbackface = 0;
  ceili->cullbackface = 0;
  walli->cullbackface = 0;
  vec3(floori->scale.v, HSCALE, 1, HSCALE);
  vec3(ceili->scale.v, HSCALE, 1, HSCALE);
  vec3(walli->scale.v, HSCALE, 1, HSCALE);
  // vec3(walli->scale.v, HSCALE, 0, HSCALE);
  floori->pos.x += MAZESIZE / 2.0 * HSCALE;
  floori->pos.z += MAZESIZE / 2.0 * HSCALE;
  ceili->pos.x += MAZESIZE / 2.0 * HSCALE;
  ceili->pos.z += MAZESIZE / 2.0 * HSCALE;
  walli->pos.x += MAZESIZE / 2.0 * HSCALE;
  walli->pos.z += MAZESIZE / 2.0 * HSCALE;
  ceili->pos.y = 1; //-1;
  eprintf("Setup all object instances\n");

  unigi_type_event event;
  unigi_type_resolution res;
  res.width = SWIDTH;
  res.height = SHEIGHT;
  res.depth = 0;

  int totaldrawn = 0;

  eprintf("Scene has %d tris, %d verts\n", render.totalfaces,
          render.totalverts);

  // Init unigi system
  unigi_graphics_init();
  unigi_window_create(res, "maze.exe"); // render.printbuf);

  // render.camera.pos.y = 4;         // 5;
  // render.camera.pitch = MPI - 0.1; // 2.2;
  // ceili->pos.y = -10;

  haloo3d_debugconsole dc;
  haloo3d_debugconsole_init(&dc);

  haloo3d_debugconsole_set(&dc, "render/fps.i", &fps);
  haloo3d_debugconsole_set(&dc, "render/fov.f", &fov);
  haloo3d_debugconsole_set(&dc, "render/trifunc.i", &render.trifunc);
  haloo3d_debugconsole_set(&dc, "render/ditherstart.f", &ditherstart);
  haloo3d_debugconsole_set(&dc, "render/ditherend.f", &ditherend);
  haloo3d_debugconsole_set(&dc, "render/sky.u16x", &sky);
  haloo3d_debugconsole_set(&dc, "camera/pos_y.f", &render.camera.pos.y);
  haloo3d_debugconsole_set(&dc, "camera/pitch.f", &render.camera.pitch);
  haloo3d_debugconsole_set(&dc, "obj/ceil/pos_y.f", &ceili->pos.y);

  // Set up ECS entities. For this game, we mostly have global entities.
  mecs ecs;
  mecs_init(&ecs);

  ecs_eid worldid = mecs_newentity(&ecs, 0);
  eprintf("World eid: %d\n", worldid);
  ECS_SETCOMPONENT(&ecs, worldid,
                   ecs_world){.state = &wstate, .walls = walli, .timer = 0};

  ecs_eid playerid = mecs_newentity(&ecs, 0);
  eprintf("Player eid: %d\n", playerid);
  ECS_SETCOMPONENT(&ecs, playerid, ecs_worldstate){.state = &wstate};
  ECS_SETCOMPONENT(&ecs, playerid, ecs_camera){.camera = &render.camera};
  ECS_SETCOMPONENT(&ecs, playerid, ecs_autonav){.timer = 0};
  ECS_SETCOMPONENT(&ecs, playerid, ecs_autorotate){.timer = 0};

  // if (playerid == -1) {
  //   dieerr("WHY IS PLAYERID -1???\n");
  // }

  // // System is setup such that camera position matches maze index
  // render.camera.pos.x = 0.5 * HSCALE;
  // render.camera.pos.z = 0.5 * HSCALE;

  // struct vec2i playerstart = {.x = 0, .y = 0};
  // struct vec2 playerrotation = {.x = render.camera.yaw,
  //                               .y = render.camera.pitch};
  // ECS_SETCOMPONENT(&ecs, playerid, ecs_rotateto){
  //     .rot = playerrotation, .dstrot = playerrotation, .timer = 0};
  // ECS_SETCOMPONENT(&ecs, playerid, ecs_maze){
  //     .maze = maze, .pos = playerstart, .size = MAZESIZE, .dir = DIRSOUTH};
  // ECS_SETCOMPONENT(&ecs, playerid, ecs_camera) & render.camera;
  // ECS_SETCOMPONENT(&ecs, playerid, ecs_smartai){.state = 0, .timer = 0};
  // eprintf("Player component mask: %lx\n", ecs.entities[playerid]);

  // -----------------------------------
  //     Actual rendering
  // -----------------------------------

  // ceili->texture = &render.window;

  while (1) {
    haloo3d_easytimer_start(&frametimer);
    // render.camera.yaw += 0.008;
    haloo3d_perspective(render.perspective, fov, ASPECT, NEARCLIP, FARCLIP);
    haloo3d_easyrender_beginframe(&render);
    haloo3d_fb_clear(&render.window, sky);

    // walli->scale.y = fabs(sin(3 * render.camera.yaw));
    //  render.camera.up.x = sin(render.camera.yaw);
    //  render.camera.up.y = cos(render.camera.yaw);
    //  walli->up.x = sin(3 * render.camera.yaw);
    //  walli->up.y = cos(4 * render.camera.yaw);

    do {
      unigi_event_get(&event);
      switch (event.type) {
      case unigi_enum_event_input_keyboard:
        if (event.data.input_keyboard.down) {
          switch (event.data.input_keyboard.button) {
          case KEY_SPACE:
            haloo3d_debugconsole_beginprompt(&dc);
            break;
          default:
            exit(0);
          }
        }
        break;
      }
    } while (event.type != unigi_enum_event_none);

    // ---------------------------
    //    Game logic?
    // ---------------------------

    for (int i = 0; i < ECS_MAXENTITIES; i++) {
      sys_world_run(&ecs, i);

      sys_autonav_run(&ecs, i);
      sys_autorotate_run(&ecs, i);
      sys_camera_run(&ecs, i);
      // sys_ecs_world_run(&ecs, i);
      // sys_ecs_smartai_run(&ecs, i);
      // sys_ecs_moveto_run(&ecs, i);
      // sys_ecs_rotateto_run(&ecs, i);
      // sys_ecs_moveto_camera_run(&ecs, i);
      // sys_ecs_rotateto_camera_run(&ecs, i);
    }

    totaldrawn = 0;

    haloo3d_obj_instance *object = NULL;

    // Iterate over objects
    while ((object = haloo3d_easyrender_nextinstance(&render, object)) !=
           NULL) {
      //  Setup final model matrix and the precalced vertices
      haloo3d_easyrender_beginmodel(&render, object);
      //  Iterate over object faces
      for (int fi = 0; fi < object->model->numfaces; fi++) {
        totaldrawn += haloo3d_easyrender_renderface(
            &render, object, fi, ditherstart, ditherend, minlight);
      }
    }

    haloo3d_easytimer_start(&filltimer);
#ifdef FASTFILL
    haloo3d_fb_fill(&screen, &render.window);
#else
    haloo3d_recti texrect = {.x1 = 0, .y1 = 0, .x2 = WIDTH, .y2 = HEIGHT};
    haloo3d_recti screenrect = {.x1 = 0, .y1 = 0, .x2 = SWIDTH, .y2 = SHEIGHT};
    haloo3d_sprite(&screen, &render.window, texrect, screenrect);
#endif
    haloo3d_easytimer_end(&filltimer);

    haloo3d_print(&render.tprint,
                  "Last frame: %05.2f (%05.2f)\nLast fill:  %05.2f "
                  "(%05.2f)\nLast SDLFl: %05.2f "
                  "(%05.2f)\nTris: %d / %d\nVerts: %d\n",
                  frametimer.last * 1000, frametimer.sum * 1000,
                  filltimer.last * 1000, filltimer.sum * 1000,
                  sdltimer.last * 1000, sdltimer.sum * 1000, totaldrawn,
                  render.totalfaces, render.totalverts);

    haloo3d_easytimer_start(&sdltimer);
    unigi_graphics_blit(0, (unigi_type_color *)screen.buffer,
                        res.width * res.height);
    unigi_graphics_flush();
    haloo3d_easytimer_end(&sdltimer);

    haloo3d_easytimer_end(&frametimer);

    float waittime = (1.0 / fps) - frametimer.last;
    if (waittime > 0) {
      unigi_time_sleep(waittime * unigi_time_clocks_per_s);
    }
  }

  // Just to get the compiler to STOP COMPLAINING about unused
  mecs_deleteentity(&ecs, worldid);

  haloo3d_easystore_deleteallobj(&storage, haloo3d_obj_free);
  haloo3d_easystore_deletealltex(&storage, haloo3d_fb_free);
}