diff options
Diffstat (limited to 'src/main.c')
| -rw-r--r-- | src/main.c | 44 |
1 files changed, 32 insertions, 12 deletions
@@ -3,19 +3,29 @@ #include <math.h> // TODO: move to implicit map definition with level editor in future -#define MAP_HEIGHT 10 -#define MAP_WIDTH 10 +#define MAP_HEIGHT 20 +#define MAP_WIDTH 20 int world_map[MAP_HEIGHT][MAP_WIDTH] = { - {1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, - {1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, - {1, 0, 0, 0, 0, 0, 2, 2, 0, 1}, - {1, 0, 0, 0, 0, 0, 2, 2, 0, 1}, - {1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, - {1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, - {1, 0, 3, 3, 0, 0, 4, 4, 0, 1}, - {1, 0, 3, 3, 0, 0, 4, 4, 0, 1}, - {1, 0, 0, 0, 0, 0, 0, 0, 0, 1}, - {1, 1, 1, 1, 1, 1, 1, 1, 1, 1} + {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 0, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 0, 1}, + {1, 0, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 0, 1}, + {1, 0, 3, 3, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 4, 0, 1}, + {1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1}, + {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, }; // TODO: move player code to dedicated file after complication demands it @@ -98,6 +108,11 @@ void raycast(Player *player) { double perp_wall_dist; if (side == 0 || side == 2) { perp_wall_dist = (map_x - player->pos_x + (1 - step_x) / 2) / ray_dir_x; } else { perp_wall_dist = (map_y - player->pos_y + (1 - step_y) / 2) / ray_dir_y; } + + // fog effect + float fog_distance = 20.0f; + float scale_factor = 1.0f - perp_wall_dist / fog_distance; + if (scale_factor < 0.0f) { scale_factor = 0.0f; } // calculate height of line on screen int line_height = (int)(screen_height / perp_wall_dist); @@ -130,6 +145,11 @@ void raycast(Player *player) { color.b /= 4; } + // scale brightness in accordance with distance (for fog) + color.r *= scale_factor; + color.g *= scale_factor; + color.b *= scale_factor; + // TODO: recommended to put this in its own function or something at some point, // as it deals with library calls outside of this function's scope glBegin(GL_LINES); |