narnaud
3 years ago
8 changed files with 263 additions and 122 deletions
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/* ************************************************************************** */ |
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/* */ |
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/* ::: :::::::: */ |
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/* render.c :+: :+: :+: */ |
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/* +:+ +:+ +:+ */ |
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/* By: narnaud <narnaud@student.42.fr> +#+ +:+ +#+ */ |
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/* +#+#+#+#+#+ +#+ */ |
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/* Created: 2022/05/31 09:33:02 by narnaud #+# #+# */ |
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/* Updated: 2022/05/31 13:46:43 by narnaud ### ########.fr */ |
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/* */ |
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/* ************************************************************************** */ |
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#include "../includes/cub3d.h" |
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void draw_vert(t_env *env, int x, int *startEnd, int color) |
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{ |
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int y; |
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y= 0; |
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while (y < startEnd[0]) |
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{ |
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env->buffer[env->line_bytes * y + x] = env->ceilColor; |
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y++; |
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} |
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while (startEnd[0] < startEnd[1]) |
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{ |
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env->buffer[env->line_bytes * startEnd[0] + x] = color; |
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startEnd[0]++; |
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} |
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y = startEnd[0]; |
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while (y < WIN_Y_SZ) |
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{ |
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env->buffer[env->line_bytes * y + x] = env->floorColor; |
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y++; |
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} |
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} |
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|
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void draw_square(t_env *env, t_vec vec, int size, int color) |
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{ |
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int step_x; |
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int step_y; |
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step_y = 0; |
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while (step_y < size) |
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{ |
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step_x = 0; |
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while (step_x < size) |
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{ |
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env->buffer[(env->line_bytes * (vec.y * size + step_y)) + (vec.x * size + step_x)] = color; |
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step_x++; |
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} |
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step_y++; |
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} |
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} |
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void render_minimap(t_env *env) |
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{ |
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char **map; |
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t_vec vec; |
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vec.y = 0; |
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map = env->map; |
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while (map[vec.y]) |
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{ |
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vec.x = 0; |
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while (map[vec.y][vec.x]) |
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{ |
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if (map[vec.y][vec.x] == '0') |
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draw_square(env, vec, 6, 39424); |
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else if (map[vec.y][vec.x] == '1') |
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draw_square(env, vec, 6, 11885067); |
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vec.x++; |
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} |
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vec.y++; |
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} |
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vec.x = round(env->playerPos.x); |
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vec.y = round(env->playerPos.y); |
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draw_square(env, vec, 6, 255); |
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} |
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|
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double get_wall_dist(t_env *env, int x) |
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{ |
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double camX; |
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t_vec_d ray; |
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t_vec_d dDist; |
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t_vec_d sDist; |
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t_vec cell; |
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t_vec step; |
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int hit; |
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int side; |
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camX = 2 * x / (double)WIN_X_SZ - 1; |
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set_vec(&ray, env->playerDir.x + env->camPlan.x * camX, env->playerDir.y + env->camPlan.y * camX); |
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cell.x = round(env->playerPos.x); |
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cell.y = round(env->playerPos.y); |
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if (ray.x == 0) |
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dDist.x = 1e30; |
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else |
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dDist.x = fabs(1 / ray.x); |
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if (ray.y == 0) |
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dDist.y = 1e30; |
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else |
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dDist.y = fabs(1 / ray.y); |
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hit = 0; |
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if (ray.x < 0) |
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{ |
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step.x = -1; |
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sDist.x = (env->playerPos.x - cell.x) * dDist.x; |
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} |
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else |
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{ |
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step.x = 1; |
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sDist.x = (cell.x + 1.0 - env->playerPos.x) * dDist.x; |
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} |
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if (ray.y < 0) |
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{ |
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step.y = -1; |
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sDist.y = (env->playerPos.y - cell.y) * dDist.y; |
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} |
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else |
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{ |
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step.y = 1; |
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sDist.y = (cell.y + 1.0 - env->playerPos.y) * dDist.y; |
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} |
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while (hit == 0) |
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{ |
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if (sDist.x < sDist.y) |
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{ |
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sDist.x += dDist.x; |
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cell.x += step.x; |
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side = 0; |
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} |
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else |
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{ |
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sDist.y += dDist.y; |
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cell.y += step.y; |
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side = 1; |
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} |
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if (env->map[cell.y][cell.x] > '0') |
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hit = 1; |
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} |
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if (side == 0) |
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return (sDist.x - dDist.x); |
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else |
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return (sDist.y - dDist.y); |
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} |
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|
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void render_view(t_env *env) |
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{ |
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int x; |
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double perpWallDist; |
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int startEnd[2]; |
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int lineHeight; |
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x = 0; |
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while (x < WIN_X_SZ) |
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{ |
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perpWallDist = get_wall_dist(env, x); |
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lineHeight = (int)(WIN_Y_SZ / perpWallDist); |
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startEnd[0] = -lineHeight / 2 + WIN_Y_SZ / 2; |
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if (startEnd[0] < 0) |
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startEnd[0] = 0; |
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startEnd[1] = lineHeight / 2 + WIN_Y_SZ / 2; |
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if(startEnd[1] >= WIN_Y_SZ) |
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startEnd[1] = WIN_Y_SZ - 1; |
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draw_vert(env, x, startEnd, 11885067); |
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x++; |
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} |
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} |
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void render(t_env *env) |
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{ |
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env->img = mlx_new_image(env->mlx, WIN_X_SZ, WIN_Y_SZ); |
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env->buffer = (int *)mlx_get_data_addr(env->img, \ |
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&env->pixel_bits, &env->line_bytes, &env->endian); |
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env->line_bytes /= 4; |
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render_view(env); |
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render_minimap(env); |
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mlx_put_image_to_window(env->mlx, env->win, env->img, 0, 0); |
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mlx_destroy_image(env->mlx, env->img); |
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} |
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