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author | Jacob Janzen <jacob.a.s.janzen@gmail.com> | 2024-02-11 23:52:18 -0600 |
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committer | Jacob Janzen <jacob.a.s.janzen@gmail.com> | 2024-02-11 23:52:18 -0600 |
commit | 53f018de3c6db90ed120e9993c656e23836874ae (patch) | |
tree | c15ae974a6dd66895f54d5d8f46ff4f255056684 /cavegen.c | |
parent | 063f4f854b1274d306c75f5737cccccfc51d8b52 (diff) |
functioning mvp
Diffstat (limited to 'cavegen.c')
-rw-r--r-- | cavegen.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/cavegen.c b/cavegen.c new file mode 100644 index 0000000..11a88cb --- /dev/null +++ b/cavegen.c @@ -0,0 +1,85 @@ +#include "cavegen.h" + +#include <stdbool.h> +#include <stdio.h> +#include <stdlib.h> +#include <time.h> + +#define HEIGHT 100 +#define WIDTH 180 +#define MAX_STEPS 200 +#define NUM_WALKERS 100 + +enum direction { + UP, + LEFT, + RIGHT, + DOWN, + NUM_DIRS, +}; + +void create_cave(bool **map, struct point **open, int *open_tiles) +{ + srand(time(NULL)); + *map = malloc(sizeof(bool) * HEIGHT * WIDTH); + for (int i = 0; i < HEIGHT; ++i) { + for (int j = 0; j < WIDTH; ++j) { + (*map)[i * WIDTH + j] = false; + } + } + + int start_x = WIDTH / 2; + int start_y = HEIGHT / 2; + *open_tiles = 1; + *open = malloc(sizeof(struct point) * HEIGHT * WIDTH); + struct point p = {.x = start_x, .y = start_y}; + (*open)[0] = p; + + for (int i = 0; i < NUM_WALKERS; ++i) { + struct point curr_point = (*open)[rand() % *open_tiles]; + int x_pos = curr_point.x; + int y_pos = curr_point.y; + + for (int j = 1; j < MAX_STEPS - 1 && x_pos < WIDTH - 1 && x_pos >= 1 && + y_pos < HEIGHT - 1 && y_pos >= 1; + ++j) { + if (!((*map)[y_pos * WIDTH + x_pos])) { + (*map)[y_pos * WIDTH + x_pos] = true; + struct point p = {.x = x_pos, .y = y_pos}; + (*open)[(*open_tiles)++] = p; + } + enum direction dir = rand() % NUM_DIRS; + switch (dir) { + case UP : --y_pos; break; + case LEFT : --x_pos; break; + case RIGHT : ++x_pos; break; + case DOWN : ++y_pos; break; + default : exit(EXIT_FAILURE); // should not occur + } + } + } + + for (int i = 0; i < NUM_WALKERS; ++i) { + struct point curr_point = (*open)[rand() % *open_tiles]; + int x_pos = curr_point.x; + int y_pos = curr_point.y; + + for (int j = 1; j < MAX_STEPS - 1 && x_pos < WIDTH - 1 && x_pos >= 1 && + y_pos < HEIGHT - 1 && y_pos >= 1; + ++j) { + if (!((*map)[y_pos * WIDTH + x_pos])) { + (*map)[y_pos * WIDTH + x_pos] = true; + struct point p = {.x = x_pos, .y = y_pos}; + (*open)[(*open_tiles)++] = p; + } + enum direction dir = rand() % NUM_DIRS; + switch (dir) { + case UP : --y_pos; break; + case LEFT : --x_pos; break; + case RIGHT : ++x_pos; break; + case DOWN : ++y_pos; break; + default : exit(EXIT_FAILURE); // should not occur + } + } + } +} |