diff options
Diffstat (limited to 'src/map.c')
| -rw-r--r-- | src/map.c | 106 |
1 files changed, 93 insertions, 13 deletions
@@ -93,6 +93,35 @@ static int get_height_of_tile_tr(int current_height, int x, int y) { return highest_point; } +static float distance_between_3f(vec3f v1, vec3f v2) +{ + return sqrt((v1.x-v2.x)*(v1.x-v2.x)+(v1.y-v2.y)*(v1.y-v2.y)+(v1.z-v2.z)*(v1.z-v2.z)); +} + +static bool ray_intersects_with_ground(vec3f begin, vec3f end) { + float dirx = (end.x - begin.x); + float diry = (end.y - begin.y); + float dirz = (end.z - begin.z); + float length = sqrt(dirx * dirx + diry * diry + dirz * dirz); + dirx /= length; + diry /= length; + dirz /= length; + double nr_tiles_to_check = length*4; // check 4 points per tile. + + for (int i = 1; i < nr_tiles_to_check; i++) { + float xtocheck = begin.x + (dirx*i/4); + float ytocheck = begin.y + (diry*i/4); + float ztocheck = begin.z + (dirz*i/4); + if (!is_in_bounds(xtocheck, ytocheck)) break; + tile tile = get_tile_under_coords(xtocheck, ytocheck); + float h = get_height_of_tile_under_coords(xtocheck, ytocheck); + if (ztocheck < h) { + return true; + } + } + return false; +} + void load_mapdata_into_world() { loaded_map.width = map_to_load.width; loaded_map.height = map_to_load.height; @@ -106,6 +135,52 @@ void load_mapdata_into_world() { int highest_point_bottomright = get_height_of_tile_br(h, x, y); int highest_point_bottomleft = get_height_of_tile_bl(h, x, y); loaded_map.heightmap[y][x] = (tile){.height = h, .type = map_to_load.tiles[y][x], highest_point_topleft, highest_point_topright, highest_point_bottomleft, highest_point_bottomright}; + loaded_map.lightmap[y][x] = (light_data){0.0f,0.0f,0.0f,0.0f}; + } + } + + light_emitter emitters[1] = { + {.brightness = 1.0f, .position = (vec3f){0, 0, 0}, .range = 10.0f}, + }; + + // Load lightmap + for (int y = 0; y < MAP_SIZE_Y; y++) { + for (int x = 0; x < MAP_SIZE_X; x++) { + for (int l = 0; l < 1; l++) { + light_emitter emitter = emitters[l]; + float dist_tl = distance_between_3f(emitter.position, (vec3f){x, y, loaded_map.heightmap[y][x].topleft}); + float dist_tr = distance_between_3f(emitter.position, (vec3f){x, y, loaded_map.heightmap[y][x].topright}); + float dist_bl = distance_between_3f(emitter.position, (vec3f){x, y, loaded_map.heightmap[y][x].bottomleft}); + float dist_br = distance_between_3f(emitter.position, (vec3f){x, y, loaded_map.heightmap[y][x].bottomright}); + + float p_tl = 1.0f - dist_tl / emitter.range; + float p_tr = 1.0f - dist_tr / emitter.range; + float p_bl = 1.0f - dist_bl / emitter.range; + float p_br = 1.0f - dist_br / emitter.range; + + if (p_tl > 1.0f) p_tl = 1.0f; if (p_tl < 0.0f) p_tl = 0.0f; + if (p_tr > 1.0f) p_tr = 1.0f; if (p_tr < 0.0f) p_tr = 0.0f; + if (p_bl > 1.0f) p_bl = 1.0f; if (p_bl < 0.0f) p_bl = 0.0f; + if (p_br > 1.0f) p_br = 1.0f; if (p_br < 0.0f) p_br = 0.0f; + + loaded_map.lightmap[y][x].tl = p_tl; + loaded_map.lightmap[y][x].tr = p_tr; + loaded_map.lightmap[y][x].bl = p_bl; + loaded_map.lightmap[y][x].br = p_br; + + if (ray_intersects_with_ground((vec3f){x, y, loaded_map.heightmap[y][x].topleft}, emitter.position)) { + loaded_map.lightmap[y][x].tl = 0.0f; + } + if (ray_intersects_with_ground((vec3f){x, y, loaded_map.heightmap[y][x].topright}, emitter.position)) { + loaded_map.lightmap[y][x].tr = 0.0f; + } + if (ray_intersects_with_ground((vec3f){x, y, loaded_map.heightmap[y][x].bottomleft}, emitter.position)) { + loaded_map.lightmap[y][x].bl = 0.0f; + } + if (ray_intersects_with_ground((vec3f){x, y, loaded_map.heightmap[y][x].bottomright}, emitter.position)) { + loaded_map.lightmap[y][x].br = 0.0f; + } + } } } @@ -217,8 +292,8 @@ void draw_grid(platform_window* window) { map_info info = get_map_info(window); for (int y = 0; y < MAP_SIZE_Y; y++) { - MAP_RENDER_DEPTH; for (int x = MAP_SIZE_X-1; x >= 0; x--) { + MAP_RENDER_DEPTH; tile tile = loaded_map.heightmap[y][x]; float xdiff_between_bottom_and_top = info.px_incline; @@ -241,22 +316,35 @@ void draw_grid(platform_window* window) { bottomright = (vec2f){render_x + xdiff_between_bottom_and_top+info.tile_width, info.tile_height * y + info.tile_height - highest_point_bottomright*info.px_raised_per_h}; bottomleft = (vec2f){render_x + xdiff_between_bottom_and_top, info.tile_height * y + info.tile_height - highest_point_bottomleft*info.px_raised_per_h}; + /* color c = rgb(205,205,205); if (highest_point_topleft > highest_point_bottomleft || highest_point_topright > highest_point_bottomright || highest_point_topleft > highest_point_bottomright || highest_point_topright > highest_point_bottomleft || highest_point_topright > highest_point_topleft || highest_point_bottomright > highest_point_bottomleft) c = rgb(165,165,165); if (highest_point_topleft < highest_point_bottomleft || highest_point_topright < highest_point_bottomright || highest_point_topleft > highest_point_topright) c = rgb(255,255,255); - + */ + + float min_brightness = 150; image* img = get_image_from_tiletype(tile.type); if (img) { - renderer->render_image_quad_tint(img, + renderer->render_image_quad(img, topleft.x, topleft.y, bottomleft.x, bottomleft.y, bottomright.x, bottomright.y, - topright.x, topright.y, c); + topright.x, topright.y); + + color c_tl = rgba(0,0,0, (u8)(min_brightness * (1.0f - loaded_map.lightmap[y][x].tl))); + color c_tr = rgba(0,0,0, (u8)(min_brightness * (1.0f - loaded_map.lightmap[y][x].tr))); + color c_bl = rgba(0,0,0, (u8)(min_brightness * (1.0f - loaded_map.lightmap[y][x].bl))); + color c_br = rgba(0,0,0, (u8)(min_brightness * (1.0f - loaded_map.lightmap[y][x].br))); + renderer->render_quad_gradient(topleft.x, topleft.y, + bottomleft.x, bottomleft.y, + bottomright.x, bottomright.y, + topright.x, topright.y, c_tl, c_bl, c_br, c_tr); } +/* if (highest_point_topleft != highest_point_bottomright && highest_point_bottomleft == highest_point_topright) { if (highest_point_bottomleft < highest_point_topleft || highest_point_bottomleft < highest_point_bottomright) { renderer->render_tri(topleft.x, topleft.y, @@ -265,16 +353,8 @@ void draw_grid(platform_window* window) { } //renderer->render_line(topleft.x, topleft.y, bottomright.x, bottomright.y, 1, rgb(0,0,255)); // diag } -/* - if (highest_point_bottomleft != highest_point_topright && highest_point_topleft == highest_point_bottomright) { - renderer->render_line(topright.x, topright.y, bottomleft.x, bottomleft.y, 1, rgb(0,0,255)); // diag - } - - renderer->render_line(topleft.x, topleft.y, topright.x, topright.y, 1, rgb(0,0,255)); // top - renderer->render_line(topleft.x, topleft.y, bottomleft.x, bottomleft.y, 1, rgb(0,0,255)); // left - renderer->render_line(topright.x, topright.y, bottomright.x, bottomright.y, 1, rgb(0,0,255)); // right - renderer->render_line(bottomleft.x, bottomleft.y, bottomright.x, bottomright.y, 1, rgb(0,0,255)); // bottom */ + loaded_map.heightmap[y][x].tl = topleft; loaded_map.heightmap[y][x].tr = topright; loaded_map.heightmap[y][x].bl = bottomleft; |