shoe/random-walkers
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Red square moving (he fuckin goin)

Browse Source
This commit is contained in:
shoe 2025-03-21 20:36:10 +00:00
parent eb5bc9b2c9
commit e79fbf72c8
1 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
random-walkers.js
View File

@ -99,6 +99,23 @@ function move_walker(walker, possible_directions) {
walker.y_velocity = walker.speed * Math.sin(walker.angle)
}
function add_random_direction(pos) {
let rand = Math.floor(Math.random() * 4);
if (rand === 0) {
pos.row++;
pos.row = pos.row.mod(n_rows);
} else if (rand === 1) {
pos.row--;
pos.row = pos.row.mod(n_rows);
} else if (rand === 2) {
pos.col++;
pos.col = pos.col.mod(n_cols);
} else {
pos.col--;
pos.col = pos.col.mod(n_cols);
}
}
/****************************************************************************
* Drawing *
****************************************************************************/
@ -115,6 +132,9 @@ function draw() {
var old_n_cols = n_cols;
n_rows = canvas.height.div(controls.cell_size);
n_cols = canvas.width.div(controls.cell_size);
offset_h = (canvas.width - (controls.cell_size * n_cols)).div(2);
offset_v = (canvas.height - (controls.cell_size * n_rows)).div(2);
offset = {h: offset_h, v: offset_v};
// TODO: for every walker and every trail, adjust their position to the new canvas size
// we wanna just mod it, probably. that way if you shrink it you don't
// lose anything.
@ -126,11 +146,14 @@ function draw() {
// grid of all one color.
draw_grid();
// draw a colored square at the walker location
draw_grid_square(walker_pos.row, walker_pos.col, "red");
add_random_direction(walker_pos);
// TODO CODE
}
function draw_grid_square(row, col, color, offset) {
function draw_grid_square(row, col, color) {
var margin = 2;
ctx.fillStyle = color;
@ -142,14 +165,10 @@ function draw_grid_square(row, col, color, offset) {
function draw_grid() {
var offset_h = (canvas.width - (controls.cell_size * n_cols)).div(2);
var offset_v = (canvas.height - (controls.cell_size * n_rows)).div(2);
var offset = {h: offset_h, v: offset_v};
// Actually draw the cells lol
for (var row = 0; row < n_rows; row++) {
for (var col = 0; col < n_cols; col++) {
draw_grid_square(row, col, "#282828", offset);
draw_grid_square(row, col, "#282828");
}
}
}
@ -167,8 +186,10 @@ canvas.height = window.innerHeight;
// compute the initial rows and columns
var n_rows = canvas.height.div(controls.cell_size);
var n_cols = canvas.width.div(controls.cell_size);
var offset_h = (canvas.width - (controls.cell_size * n_cols)).div(2);
var offset_v = (canvas.height - (controls.cell_size * n_rows)).div(2);
var offset = {h: offset_h, v: offset_v};
// set start position of walker and start the random walk
var walker_position = {x: n_rows.div(2), y: n_cols.div(2)};
var trail_positions = [];
var walker_pos = {row: n_rows.div(2), col: n_cols.div(2)};
init_walk();