chore: Update dependency excalibur to v0.28.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
excalibur	0.28.3 -> 0.28.4

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Release Notes

excaliburjs/Excalibur (excalibur)

v0.28.4

Compare Source

Breaking Changes

Deprecated

Added

• Ability to configure TileMap debug drawing with the ex.Engine.debug.tilemap property.
• Materials have a new convenience method for updating uniforms

  game.input.pointers.primary.on('move', evt => {
    heartActor.pos = evt.worldPos;
    swirlMaterial.update(shader => {
      shader.trySetUniformFloatVector('iMouse', evt.worldPos);
    });
  });

Fixed

• Fixed issue where TileMap solid tiles tile packing algorithm would incorrectly merge tiles in certain situations.
• Sprite tint was not respected when supplied in the constructor, this has been fixed!
• Adjusted the FontCache font timeout to 400 ms and makes it configurable as a static FontCache.FONT_TIMEOUT. This is to help prevent a downward spiral on mobile devices that might take a long while to render a few starting frames causing the cache to repeatedly clear and never recover.

Updates

• Materials can now reference a new uniform for the screen texture and a screen uv attribute in their fragment shaders

  • u_screen_texture - This is the texture of the screen right before the material draw call
  • a_screenuv - The vertex attribute corresponding to the screen uv relative to the current graphic
  • v_screenuv - The fragment varying corresponding to the screen uv relative to the current graphic

• Materials can now reference the current time in their shaders

  • u_time_ms - This is the ms since page navigation (performance.now() under the hood)

Changed

• TileMap debug draw is now less verbose by default to save draw cycles when toggling to debug

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