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Fix flicker when moving in sync with a N/W actor at the edge of the viewport

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This commit is contained in:
Eevee (Evelyn Woods) 2020-10-04 09:40:52 -06:00
parent 8adb630862
commit 7f8efaa4e0
1 changed files with 4 additions and 4 deletions
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8
js/renderer-canvas.js
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@ -111,12 +111,12 @@ export class CanvasRenderer {
// The viewport might not be aligned to the grid, so split off any fractional part.
let xf0 = Math.floor(x0);
let yf0 = Math.floor(y0);
// Note that when the viewport is exactly aligned to the grid, we need to draw the cells
// just outside of it, or we'll miss objects partway through crossing the border
if (xf0 === x0 && xf0 > 0) {
// We need to draw one cell beyond the viewport, or we'll miss objects partway through
// crossing the border moving away from us
if (xf0 > 0) {
xf0 -= 1;
}
if (yf0 === y0 && yf0 > 0) {
if (yf0 > 0) {
yf0 -= 1;
}
// Find where to stop drawing. As with above, if we're aligned to the grid, we need to