Riko4

This article is incomplete. You can help this wiki by expanding it.

Riko4 is a fantasy computer first released in 2017 by Emma. Games and applications written for Riko4 using Lua.

Specifications

• Screen: 280x160, 16 color fixed palette
• Sound: yes

API

Riko4 has a few functions built-in that are called by the system.

• _update() - Called every frame before_draw()
• _draw() - Called every frame after _update()
• _event(evt, ...) - Called when an event is created

Console Commands

• cd [folder]
• ls
• lua

Graphics

Many of these are wrapper functions for the GPU module.

• cam(x, y) - move the camera
• cls()
• line(x1, y1, x2, y2, color, lineWidth)
• pal(paletteTable)
• pget(x, y)
• pix(x, y, color)
• pixb(centerX, centerY, width, height, pixelTable) - blit pixels
• pop()
• push()
• rgb(red, blue, green) - creates an RGB value
• rect(x, y, width, height, color)
• rectFill(x, y, width, height, color)
• sheet(file, area, spacing, margin)
• spr(x, y, dx, dy)
• swap()
• trans(x, y)
• write(text, width, height, color)
• writeScaled(text, width, height, color) ?
• writeWidth(text, width) ?

GPU

• gpu.blitPalette(palette)
• gpu.blitPixels(centerX, centerY, width, height, pixelTable)
• gpu.clear(color)
• gpu.clip(x, y, width, height)
• gpu.drawPixel(x, y, color)
• gpu.drawRectangle(x, y, width, height, color)
• gpu.getPalette()
• gpu.getPixel(x, y)
• gpu.pop()
• gpu.push()
• gpu.translate(x, y)
• gpu.setPaletteColor(index, r, g, b)
• gpu.swap()

Filesystem

• FSRef:close() - close the file handle FSRef
• bool fs.delete(filename)
• fs.getAttr(filename)
• fs.getCWD()
• fs.getClipboard()
• fs.getLastFile()
• fs.list(directory)
• bool fs.mkdir(folderName) - Creates folderName with 0777 mask
• bool fs.move(originalFilename, destFilename)
• FSRef = fs.open(filename, flags) - opens a file handle (must also be closed manually)
• FSRef:read(someWeirdKeyword)
• fs.setClipboard(text)
• fs.setCWD(directory)

Sound

• speaker.play(params)

Links

• GitHub