irrlichtandClaude Opus 5
5a055c048d
pbio moves to git.bnd.wtf/irrlicht/pbio.git branch truecolor16: the framebuffer is now RGB565 u16, no palette. Assets are loaded from PNG via the png crate and quantized to RGB565 on load; transparency comes from the alpha channel as a per-tile opacity mask, so any color (black included) can be opaque. The TGA loader and the palette-order fragility are gone. overworld.png is the unmodified Mini-Medieval Overworld sheet (same 24-column layout as the old TGA, so map tile ids are unchanged); entities.png holds the player sprite extracted from the old entities.tga. Adds an ignored snapshot test that renders the first frame headlessly to a PNG for eyeballing the renderer without a window. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
1.1 KiB
Executable File
1.1 KiB
Executable File
Text Renderer
Current state
No text rendering exists yet. No font loading or glyph blitting code exists.
Goal
Draw ASCII text into the RGB565 framebuffer using a bitmap font.
Design notes
- A bitmap font is the right fit: each glyph is a small masked tile, blitted
directly into the framebuffer using the existing blit primitive in
pixelhelper.rs. - Likely approach: a fixed 8×8 or similar glyph grid packed into a PNG, one glyph per ASCII codepoint starting at 0x20 (space).
- The font image only needs its alpha mask: glyph pixels are opaque, background transparent;
the caller supplies the color and
draw_textpaints the mask with it. - API sketch:
fn draw_text(frame: &mut [u16], font: &Font, x: i32, y: i32, color: u16, text: &str); Fontholds the glyph sheet as anImageplus glyph width/height.
Open questions
- How do we handle proportional spacing of different characters?
- How do we store font data in memory?
- How do we handle font color rendering?
- How do we handle special characters like Ä, Ö, Ü, ß, etc.?