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Impl Joypad

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This commit is contained in:
Andrew Glaze
2024-08-21 18:35:32 -04:00
parent bd21449256
commit 59e7559d77
4 changed files with 73 additions and 137 deletions
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80
Sources/Render/TileViewer.swift
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@@ -1,80 +0,0 @@
struct TileViewer {
static func showTile(chrRom: [UInt8], bank: Int, tileNum: Int) -> Frame {
guard bank <= 1 else { fatalError("CHR Rom bank must be >1") }
let frame = Frame()
let bank = bank * 0x1000
let tile = chrRom[(bank + tileNum * 16)...(bank + tileNum * 16 + 15)]
for y in 0...7 {
var upper = tile[tile.startIndex + y]
var lower = tile[tile.startIndex + y + 8]
for x in (0...7).reversed() {
let value = (1 & upper) << 1 | (1 & lower)
upper = upper >> 1
lower = lower >> 1
let rgb = switch value {
case 0:
NESColor.SYSTEM_PALLETE[0x01]
case 1:
NESColor.SYSTEM_PALLETE[0x23]
case 2:
NESColor.SYSTEM_PALLETE[0x28]
case 3:
NESColor.SYSTEM_PALLETE[0x31]
default:
fatalError("Invalid Pallete Color type")
}
frame.setPixel((x, y), rgb)
}
}
return frame
}
static func showTileBank(chrRom: [UInt8], bank: Int) -> Frame {
let frame = Frame()
var tileY = 0
var tileX = 0
let bank = (bank * 0x1000)
for tileNum in 0..<255 {
if tileNum != 0 && tileNum % 20 == 0 {
tileY += 10;
tileX = 0;
}
let tile = chrRom[(bank + tileNum * 16)...(bank + tileNum * 16 + 15)]
for y in 0...7 {
var upper = tile[tile.startIndex + y]
var lower = tile[tile.startIndex + y + 8]
for x in (0...7).reversed() {
let value = (1 & upper) << 1 | (1 & lower)
upper = upper >> 1
lower = lower >> 1
let rgb = switch value {
case 0:
NESColor.SYSTEM_PALLETE[0x01]
case 1:
NESColor.SYSTEM_PALLETE[0x23]
case 2:
NESColor.SYSTEM_PALLETE[0x28]
case 3:
NESColor.SYSTEM_PALLETE[0x31]
default:
fatalError("Invalid Pallete Color type")
}
frame.setPixel((tileX + x, tileY + y), rgb)
}
}
tileX += 10
}
return frame
}
}