66 lines
1.7 KiB
JavaScript
66 lines
1.7 KiB
JavaScript
import * as graphics from "./graphics_core.mjs";
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export * from "./graphics_core.mjs";
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import { range, iter_2d } from "./utils/range.mjs";
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import * as entity from "./entity.mjs";
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import * as world from "./world.mjs";
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const canvas = document.getElementById("canvas");
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const canvas_context = canvas.getContext("2d");
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graphics.set_size(canvas.width, canvas.height);
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const BASE_SCALE = 81;
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export function draw_tile (x, y, size = BASE_SCALE) {
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graphics.fill_rect(x, y, size, size);
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}
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function checkerboard (x, y) {
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return ((x ^ y) & 1) === 0;
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}
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export function draw_floor (start_x, start_y, scale) {
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iter_2d(range(0, world.BOX_SIZE - 1), (x, y) => {
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if (checkerboard(x, y)) {
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graphics.set_color("#aaa");
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} else {
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graphics.set_color("#888");
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}
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const [visual_x, visual_y] = project_pos(x, y, scale);
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draw_tile(start_x + visual_x, start_y + visual_y, scale);
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});
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}
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export function draw_world (box, start_x = 0, start_y = 0, scale = BASE_SCALE) {
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draw_floor(start_x, start_y, scale);
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iter_2d(range(0, world.BOX_SIZE - 1), (x, y) => {
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const tile = world.get_tile(box, x, y);
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const [visual_x, visual_y] = project_pos(x, y, scale);
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switch (tile.type) {
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case "box": {
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draw_world(tile.box, start_x + visual_x, start_y + visual_y, scale / world.BOX_SIZE);
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break;
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}
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}
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});
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entity.for_each((entity, id) => {
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if (entity.box !== box) return;
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graphics.set_color(entity.color);
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const [visual_x, visual_y] = project_pos(entity.x, entity.y, scale);
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draw_tile(start_x + visual_x, start_y + visual_y, scale);
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});
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}
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function project_pos (x, y, scale) {
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return [x, y].map(a => a * scale);
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}
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export function render () {
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graphics.render(canvas_context);
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}
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