this repo has no description
add Nim Wasm template (#2645)
authored by
Archar Gelod
and committed by
GitHub
55ee0b30
3c52c46c
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+10
templates/nim/README.md
+10
templates/nim/README.md
···
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# Nim Starter Project Template
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This is a Nim / TIC-80 starter template. To build wasm binary and import it into
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the 'cart.tic' file, ensure you have a Nim compiler, Wasi-SDK and Tic-80 on your system and run:
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```
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nimble buildcart
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```
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Run `nimble tasks` command to see more build options.
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templates/nim/cart.nimble
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templates/nim/cart.nimble
···
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# Package
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version = "0.1.0"
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author = "archargelod"
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description = "tic80 wasm template for Nim language"
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license = "MIT"
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srcDir = "src"
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# Dependencies
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requires "nim >= 2.0.0"
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# Tasks
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import std/strformat
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let pwd = getCurrentDir()
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task wasmbuild, "Build wasm binary (debug)":
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exec("nim c -o:cart.wasm src/cart")
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task wasmrelease, "Build wasm binary (release)":
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exec("nim c -d:release -o:cart.wasm src/cart")
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task buildcart, "Build optimized wasm binary and import it to tic80 cart":
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rmFile("cart.tic")
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exec("nim c -d:release -o:cart.wasm src/cart")
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exec(&"tic80 --cli --fs=\"{pwd}\" --cmd=\"load src/cart.tic & import binary cart.wasm & save cart.tic & exit\"")
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task runcart, "Build optimized wasm binary and run it with tic80":
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rmFile("cart.tic")
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exec("nim c -d:release -o:cart.wasm src/cart")
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exec(&"tic80 --skip --fs=\"{pwd}\" --cmd=\"load src/cart.tic & import binary cart.wasm & save cart.tic & run\"")
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task debugcart, "Build wasm binary in debug mode and run it with tic80":
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rmFile("cart.tic")
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exec("nim c -o:cart.wasm src/cart")
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exec(&"tic80 --skip --fs=\"{pwd}\" --cmd=\"load src/cart.tic & import binary cart.wasm & save cart.tic & run\"")
+52
templates/nim/config.nims
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templates/nim/config.nims
···
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import std/os
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let wasi = getEnv("WASI_SDK_PATH")
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if wasi == "" and not defined(nimsuggest):
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echo ""
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echo "Error:"
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echo "Download the WASI SDK (https://github.com/WebAssembly/wasi-sdk) and set the $WASI_SDK_PATH environment variable!"
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echo ""
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quit(-1)
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switch("cpu", "wasm32")
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switch("cc", "clang")
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switch("threads", "off")
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# ARC is much more embedded-friendly
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switch("gc", "arc")
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# Treats defects as errors, results in smaller binary size
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switch("panics", "on")
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# Use the common ANSI C target
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switch("os", "any")
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# Needed for os:any
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switch("define", "posix")
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# WASM has no signal handlers
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switch("define", "noSignalHandler")
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# The only entrypoints are start and update
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switch("noMain")
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# Use malloc instead of Nim's memory allocator, makes binary size much smaller
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switch("define", "useMalloc")
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switch("clang.exe", wasi / "bin" / "clang")
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switch("clang.linkerexe", wasi / "bin" / "clang")
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switch("passC", "--sysroot=" & (wasi / "share" / "wasi-sysroot"))
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switch("passL", "-Wl,-zstack-size=8192,--no-entry,--import-memory -mexec-model=reactor -Wl,--initial-memory=262144,--max-memory=262144,--global-base=98304")
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when not defined(release):
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switch("assertions", "off")
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switch("checks", "off")
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switch("stackTrace", "off")
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switch("lineTrace", "off")
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switch("lineDir", "off")
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switch("debugger", "native")
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# This is needed to remove all unused Nim functions that will in turn import
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# WASI stuff that is not available in WASM-4
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switch("passL", "-Wl,--gc-sections")
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else:
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switch("opt", "size")
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switch("passC", "-flto")
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switch("passL", "-Wl,--strip-all,--gc-sections,--lto-O3")
templates/nim/demo/bunny.tic
templates/nim/demo/bunny.tic
This is a binary file and will not be displayed.
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templates/nim/demo/bunnymark.nim
+84
templates/nim/demo/bunnymark.nim
···
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import std/[random]
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import ../cart/tic80
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let ToolbarHeight = 6
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type
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Bunny = object
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x, y: float32
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width: int32 = 26
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height: int32 = 32
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speedX, speedY: float32
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sprite: int32
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FPS = object
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value, frames: int32
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lastTime: float32
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proc getValue(f: var FPS): int32 =
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if time() - f.lastTime <= 1000:
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inc f.frames
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else:
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f.value = f.frames
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f.frames = 0
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f.lastTime = time()
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f.value
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proc newBunny: Bunny =
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Bunny(
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x: rand(0 .. Width).float32,
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y: rand(0 .. Height).float32,
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width: 26,
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height: 32,
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speedX: rand(-100.0 .. 100.0) / 60,
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speedY: rand(-100.0 .. 100.0) / 60,
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sprite: 1,
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)
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proc draw(b: Bunny) =
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spr(b.sprite, b.x.int32, b.y.int32, transColor=1, w=4, h=4)
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proc update(b: var Bunny) =
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b.x += b.speedX
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b.y += b.speedY
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if b.x.int32 + b.width > Width:
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b.x = float32(Width - b.width)
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b.speedX *= -1
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if b.x < 0:
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b.x = 0
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b.speedX *= -1
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if b.y.int32 + b.height > Height:
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b.y = float32(Height - b.height)
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b.speedY *= -1
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if b.y < 0:
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b.y = 0
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b.speedY *= -1
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randomize(tstamp().int64)
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var fps: FPS
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var bunnies: seq[Bunny]
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proc TIC {.exportWasm.} =
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cls(13)
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if btn(P1_Up):
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for _ in 1..5:
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bunnies.add newBunny()
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if btn(P1_Down):
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for _ in 1..5:
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if bunnies.len > 0:
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bunnies.del bunnies.high
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for bunny in bunnies.mitems:
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bunny.update()
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for bunny in bunnies.mitems:
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bunny.draw()
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rect(0, 0, Width, ToolbarHeight, 0)
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print("Bunnies: " & $bunnies.len, 1, 0, 11, false, 1, false)
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print("FPS: " & $fps.getValue(), Width div 2, 0, 11, false, 1, false)
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+17
templates/nim/src/cart.nim
+17
templates/nim/src/cart.nim
···
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import cart/tic80
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var
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t = 1
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x = 96
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y = 24
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proc TIC {.exportWasm.} =
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cls(Color13)
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if btn(P1_Up): dec y
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if btn(P1_Down): inc y
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if btn(P1_Left): dec x
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if btn(P1_Right): inc x
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spr(1 + t mod 60 div 30 * 2, x, y, transColor=Color14, scale=3, w=2, h=2)
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print("Hello from Nim!", 84, 84)
templates/nim/src/cart.tic
templates/nim/src/cart.tic
This is a binary file and will not be displayed.
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templates/nim/src/cart/internal.nim
+286
templates/nim/src/cart/internal.nim
···
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const
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TileSize* = 8
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Width* = 240
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Height* = 136
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WidthTiles* = Width div TileSize
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HeightTiles* = Height div TileSize
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Bpp* = 4 ## bits per pixel
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type
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Key* = enum
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Key_Null, Key_A, Key_B, Key_C, Key_D, Key_E, Key_F, Key_G, Key_H, Key_I, Key_J,
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Key_K, Key_L, Key_M, Key_N, Key_O, Key_P, Key_Q, Key_R, Key_S, Key_T, Key_U,
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Key_V, Key_W, Key_X, Key_Y, Key_Z, Key_0, Key_1, Key_2, Key_3, Key_4, Key_5,
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Key_6, Key_7, Key_8, Key_9, Key_Minus, Key_Equals, Key_Leftbracket,
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Key_Rightbracket, Key_Backslash, Key_Semicolon, Key_Apostrophe, Key_Grave,
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Key_Comma, Key_Period, Key_Slash, Key_Space, Key_Tab, Key_Return, Key_Backspace,
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Key_Delete, Key_Insert, Key_Pageup, Key_Pagedown, Key_Home, Key_End, Key_Up,
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Key_Down, Key_Left, Key_Right, Key_Capslock, Key_Ctrl, Key_Shift, Key_Alt
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Button* = enum
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P1_Up, P1_Down, P1_Left, P1_Right, P1_A, P1_B, P1_X, P1_Y,
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P2_Up, P2_Down, P2_Left, P2_Right, P2_A, P2_B, P2_X, P2_Y,
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P3_Up, P3_Down, P3_Left, P3_Right, P3_A, P3_B, P3_X, P3_Y,
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P4_Up, P4_Down, P4_Left, P4_Right, P4_A, P4_B, P4_X, P4_Y
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Color* = enum
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Null = -1'i8, Color0, Color1, Color2, Color3, Color4, Color5, Color6, Color7,
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Color8, Color9, Color10, Color11, Color12, Color13, Color14, Color15,
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VRAM* {.bycopy.} = object
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screen*: array[Width * Height * Bpp div 8, uint8]
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palette*: array[48, uint8] ## 16 colors.
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palletteMap*: array[8, uint8] ## 16 indices.
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borderColorAndOvrTransparency*: uint8 ## Bank 0 is border color, bank 1 is OVR transparency.
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screenOffsetX*: int8
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screenOffsetY*: int8
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mouseCursor*: int8
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blitSegment*: uint8
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reserved*: array[3, uint8]
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MousePos* {.bycopy.} = object
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x*: int16
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y*: int16
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scrollx*: int8
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scrolly*: int8
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left*: bool
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middle*: bool
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right*: bool
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## ---------------------------
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## Pointers
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## ---------------------------
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const
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Framebuffer*: ptr Vram = cast[ptr Vram](0)
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Tiles*: ptr uint8 = cast[ptr uint8](0x04000)
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Sprites*: ptr uint8 = cast[ptr uint8](0x06000)
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Map*: ptr uint8 = cast[ptr uint8](0x08000)
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Gamepads*: ptr uint8 = cast[ptr uint8](0x0ff80)
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Mouse*: ptr uint8 = cast[ptr uint8](0x0ff84)
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Keyboard*: ptr uint8 = cast[ptr uint8](0x0ff88)
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SfxState*: ptr uint8 = cast[ptr uint8](0x0ff8c)
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SoundRegisters*: ptr uint8 = cast[ptr uint8](0x0ff9c)
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Waveforms*: ptr uint8 = cast[ptr uint8](0x0ffe4)
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Sfx*: ptr uint8 = cast[ptr uint8](0x100e4)
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MusicPatterns*: ptr uint8 = cast[ptr uint8](0x11164)
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MusicTracks*: ptr uint8 = cast[ptr uint8](0x13e64)
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SoundState*: ptr uint8 = cast[ptr uint8](0x13ffc)
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StereoVolume*: ptr uint8 = cast[ptr uint8](0x14000)
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PersistentMemory*: ptr uint8 = cast[ptr uint8](0x14004)
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SpriteFlags*: ptr uint8 = cast[ptr uint8](0x14404)
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SystemFont*: ptr uint8 = cast[ptr uint8](0x14604)
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WasmFreeRam*: ptr uint8 = cast[ptr uint8](0x18000)
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## 160kb
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## ---------------------------
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## Constants
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## ---------------------------
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const
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TilesSize*: uint32 = 0x2000
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SpritesSize*: uint32 = 0x2000
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MapSize*: uint32 = 32640
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GamepadsSize*: uint32 = 4
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MouseSize*: uint32 = 4
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KeyboardSize*: uint32 = 4
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SfxStateSize*: uint32 = 16
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SoundRegistersSize*: uint32 = 72
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WaveformsSize*: uint32 = 256
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SfxSize*: uint32 = 4224
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MusicPatternsSize*: uint32 = 11520
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MusicTracksSize*: uint32 = 408
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SoundStateSize*: uint32 = 4
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StereoVolumeSize*: uint32 = 4
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PersistentMemorySize*: uint32 = 1024
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SpriteFlagsSize*: uint32 = 512
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SystemFontSize*: uint32 = 2048
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WasmFreeRamSize*: uint32 = 163840
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## 160kb
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{.push importc, codegenDecl: "__attribute__((import_name(\"$2\"))) $1 $2$3".}
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## ---------------------------
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## Drawing Procedures
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## ---------------------------
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proc circ*(x, y, radius: int32; color: Color)
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## Draw a filled circle.
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proc circb*(x, y, radius: int32; color: Color)
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## Draw a circle border.
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proc elli*(x, y, a, b: int32; color: Color)
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## Draw a filled ellipse.
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proc ellib*(x, y, a, b: int32; color: Color)
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## Draw an ellipse border.
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proc clip*(x, y, width, height: int32)
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## Set the screen clipping region.
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proc cls*(color: Color = Color0)
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## Clear the screen.
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+
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proc font*(text: cstring; x, y: int32; trans_colors: ptr uint8; trans_count: int8,
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char_width, char_height: int8; fixed: bool; scale: int8; alt: bool): int8
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## Print a string using foreground sprite data as the font.
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proc line*(x0, y0, x1, y1: cfloat; color: Color)
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## Draw a straight line.
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proc map*(x, y, w, h, sx, sy: int32; trans_colors: ptr uint8; colorCount: int8;
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scale: int8; remap: int32)
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## Draw a map region.
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+
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proc pix*(x, y: int32; color: Color): uint8 {.discardable.}
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## Get or set the color of a single pixel.
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+
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proc print*(text: cstring; x, y: int32; color: Color = Color15; fixed = false;
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scale: int32 = 1; alt = false): int32 {.discardable.}
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## Print a string using the system font.
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+
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proc rect*(x, y, w, h: int32; color: Color)
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## Draw a filled rectangle.
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+
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proc rectb*(x, y, w, h: int32; color: Color)
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## Draw a rectangle border.
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+
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proc spr*(id, x, y: int32; trans_colors: ptr uint8; color_count: int8;
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scale, flip, rotate, w, h: int32)
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## Draw a sprite or composite sprite.
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proc tri*(x1, y1, x2, y2, x3, y3: cfloat; color: Color)
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## Draw a filled triangle.
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+
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proc trib*(x1, y1, x2, y2, x3, y3: cfloat; color: Color)
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## Draw a triangle border.
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+
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proc ttri*(x1, y1, x2, y2, x3, y3, u1, v1, u2, v2, u3, v3: cfloat; texsrc: int32;
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trans_colors: ptr uint8; color_count: int8; z1, z2, z3: cfloat; depth: bool)
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## Draw a triangle filled with texture.
167
+
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+
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## ---------------------------
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## Input Functions
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+
## ---------------------------
172
+
173
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proc btn*(button: Button): uint32
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## Get gamepad button state in current frame.
175
+
176
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proc btnp*(button: Button; hold: int32 = -1; period: int32 = -1): uint32
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## Get gamepad button state according to previous frame.
178
+
179
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proc key*(key: Key): bool
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## Get keyboard button state in current frame.
181
+
182
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proc keyp*(key: Key; hold: int32 = -1; period: int32 = -1): bool
183
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## Get keyboard button state relative to previous frame.
184
+
185
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proc mouse*(mouse_ptr_addy: ptr MousePos)
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## Get XY and press state of mouse/touch.
187
+
188
+
189
+
## ---------------------------
190
+
## Sound Functions
191
+
## ---------------------------
192
+
193
+
proc music*(track, frame, row: int32; loop, sustain: bool; tempo, speed: int32)
194
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## Play or stop playing music.
195
+
196
+
proc sfx*(sfx_id, note, octave, duration, channel, volume_left, volume_right,
197
+
speed: int32)
198
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## Play or stop playing a given sound.
199
+
200
+
201
+
## ---------------------------
202
+
## Memory Functions
203
+
## ---------------------------
204
+
205
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proc pmem*(address: int32; value: int64): uint32 {.discardable.}
206
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## Access or update the persistent memory.
207
+
208
+
proc peek*(address: int32; bits: int8 = 8): int8
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## Read a byte from an address in RAM.
210
+
211
+
proc peek1*(address: int32): int8
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## Read a single bit from an address in RAM.
213
+
214
+
proc peek2*(address: int32): int8
215
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## Read two bit value from an address in RAM.
216
+
217
+
proc peek4*(address: int32): int8
218
+
## Read a nibble value from an address.
219
+
220
+
proc poke*(address: int32; value: int8; bits: int8 = 8)
221
+
## Write a byte value to an address in RAM.
222
+
223
+
proc poke1*(address: int32; value: int8)
224
+
## Write a single bit to an address in RAM.
225
+
226
+
proc poke2*(address: int32; value: int8)
227
+
## Write a two bit value to an address in RAM.
228
+
229
+
proc poke4*(address: int32; value: int8)
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+
## Write a nibble value to an address in RAM.
231
+
232
+
proc sync*(mask: int32 = 0; bank: int8 = 0; to_cart = false)
233
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## Copy banks of RAM (sprites, map, etc) to and from the cartridge.
234
+
235
+
proc vbank*(bank: int8): int8
236
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## Switch the 16kb of banked video RAM.
237
+
238
+
239
+
## ---------------------------
240
+
## Utility Functions
241
+
## ---------------------------
242
+
243
+
proc fget*(sprite_index: int32; flag: int8): bool
244
+
## Retrieve a sprite flag.
245
+
246
+
proc fset*(sprite_index: int32; flag: int8; value: bool): bool {.discardable.}
247
+
## Update a sprite flag.
248
+
249
+
proc mget*(x, y: int32): int32
250
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## Retrieve a map tile at given coordinates.
251
+
252
+
proc mset*(x, y, value: int32)
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## Update a map tile at given coordinates.
254
+
255
+
256
+
## ---------------------------
257
+
## System Functions
258
+
## ---------------------------
259
+
260
+
proc exit*()
261
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## Interrupt program and return to console.
262
+
263
+
proc tstamp*(): uint32
264
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## Returns the current Unix timestamp in seconds.
265
+
266
+
proc trace*(text: cstring; color: Color = Color15)
267
+
## Print a string to the Console.
268
+
269
+
{.pop.}
270
+
271
+
# suffix fixes "unreachable code executed" error
272
+
proc time2*(): cfloat {.importc,
273
+
codegenDecl: "__attribute__((import_name(\"time\"))) $1 $2$3".}
274
+
## Returns how many milliseconds have passed since game started.
275
+
276
+
import std/macros
277
+
278
+
macro exportWasm*(def: untyped): untyped =
279
+
result = def
280
+
result[^3] = nnkPragma.newTree(
281
+
ident("exportc"),
282
+
nnkExprColonExpr.newTree(
283
+
ident("codegenDecl"),
284
+
newStrLitNode("__attribute__((export_name(\"$2\"))) $1 $2$3")
285
+
)
286
+
)
+78
templates/nim/src/cart/tic80.nim
+78
templates/nim/src/cart/tic80.nim
···
1
+
import internal except btn, btnp, trace
2
+
export internal except btn, btnp, trace
3
+
4
+
proc font*(text: cstring, x, y: int32, transColor, char_width, char_height: int8,
5
+
fixed: bool, scale: int8, alt: bool): int8 {.discardable.} =
6
+
## Print a string using foreground sprite data as the font.
7
+
if transColor >= 0:
8
+
let trans_colors = transColor.uint8
9
+
internal.font(text, x, y, addr trans_colors, 1, char_width, char_height, fixed,
10
+
scale, alt)
11
+
else:
12
+
internal.font(text, x, y, nil, 0, char_width, char_height, fixed, scale, alt)
13
+
14
+
proc map*(x: int32 = 0, y: int32 = 0, w: int32 = 30, h: int32 = 17,
15
+
sx: int32 = 0, sy: int32 = 0, transColor: Color = Null, scale: int8 = 1,
16
+
remap: int32 = -1) =
17
+
## Draw a map region.
18
+
if transColor.int8 >= 0:
19
+
let trans_colors = transColor.uint8
20
+
internal.map(x, y, w, h, sx, sy, addr trans_colors, 1, scale, remap)
21
+
else:
22
+
internal.map(x, y, w, h, sx, sy, nil, 0, scale, remap)
23
+
24
+
proc spr*(id, x, y: int32, transColor: Color = Null, scale: int32 = 1,
25
+
flip: int32 = 0, rotate: int32 = 0, w: int32 = 1, h: int32 = 1) =
26
+
## Draw a sprite or composite sprite.
27
+
if transColor.int8 >= 0:
28
+
let trans_colors = transColor.uint8
29
+
internal.spr(id, x, y, addr trans_colors, 1, scale, flip, rotate, w, h)
30
+
else:
31
+
internal.spr(id, x, y, nil, 0, scale, flip, rotate, w, h)
32
+
33
+
proc ttri*(x1, y1, x2, y2, x3, y3, u1, v1, u2, v2, u3, v3: cfloat,
34
+
texsrc: int32 = 0, transColor: Color = Null,
35
+
z1: cfloat = 0, z2: cfloat = 0, z3: cfloat = 0, depth = false) =
36
+
## Draw a triangle filled with texture.
37
+
if transColor.int8 >= 0:
38
+
let trans_colors = transColor.uint8
39
+
internal.ttri(x1, y1, x2, y2, x3, y3, u1, v1, u2, v2, u3, v3, texsrc,
40
+
addr trans_colors, 1, z1, z2, z3, depth)
41
+
else:
42
+
internal.ttri(x1, y1, x2, y2, x3, y3, u1, v1, u2, v2, u3, v3, texsrc,
43
+
nil, 0, z1, z2, z3, depth)
44
+
45
+
proc btn*(index: Button): bool {.inline.} =
46
+
## Get gamepad button state in current frame.
47
+
internal.btn(index) > 0
48
+
49
+
proc btnp*(index: Button, hold: int32 = -1, period: int32 = -1): bool {.inline.} =
50
+
## Get gamepad button state according to previous frame.
51
+
internal.btnp(index, hold, period) > 0
52
+
53
+
proc mouse*(): MousePos {.inline.} = internal.mouse(addr result)
54
+
## Get XY and press state of mouse/touch.
55
+
56
+
proc pmemset*(address: int32; value: int64) = pmem(address, value)
57
+
## Update the persistent memory.
58
+
proc pmemget*(address: int32): uint32 = pmem(address, -1)
59
+
## Access the persistent memory.
60
+
61
+
proc pixset*(x, y: int32; color: Color) = pix(x, y, color)
62
+
## Set the color of a single pixel.
63
+
proc pixget*(x, y: int32): uint8 = pix(x, y, Null)
64
+
## Get the color of a single pixel.
65
+
66
+
proc trace*(items: varargs[cstring, cstring]) =
67
+
## Print a string to the Console.
68
+
for item in items: internal.trace(item)
69
+
70
+
proc print*(text: string; x, y: int32; color: Color = Color15; fixed = false;
71
+
scale: int32 = 1; alt = false): int32 {.discardable.} =
72
+
## Print a string using the system font.
73
+
print(cstring(text), x, y, color, fixed, scale, alt)
74
+
75
+
proc NimMain() {.importc.}
76
+
77
+
proc BOOT() {.exportWasm.} =
78
+
NimMain()