mfurquimdev / try-bevy

Follow Bevy getting started book - a game engine written in rust.

Trying Bevy (Rust Game Engine)

Code following Bevy Book

Add Bevy

Add bevy as a dependency

cargo add bevy

Optimization

Install a faster linker and add configuration files for improving speed.

Install lld

Install lld - a faster linker

sudo pacman -S lld

Add to files

Cargo.toml

[dependencies]
bevy = { version = "0.12.0", features = ["dynamic_linking"] }

# Enable a small amount of optimization in debug mode
[profile.dev]
opt-level = 1

# Enable high optimizations for dependencies (incl. Bevy), but not for our code:
[profile.dev.package."*"]
opt-level = 3

rust-toolchain.toml

[toolchain]
channel = "nightly"

config.toml

# NOTE: For maximum performance, build using a nightly compiler
# If you are using rust stable, remove the "-Zshare-generics=y" below.

[target.x86_64-unknown-linux-gnu]
linker = "clang"
rustflags = ["-Clink-arg=-fuse-ld=lld", "-Zshare-generics=y"]

[target.x86_64-apple-darwin]
rustflags = [
    "-C",
    "link-arg=-fuse-ld=/usr/local/opt/llvm/bin/ld64.lld",
    "-Zshare-generics=y",
]

[target.aarch64-apple-darwin]
rustflags = [
    "-C",
    "link-arg=-fuse-ld=/opt/homebrew/opt/llvm/bin/ld64.lld",
    "-Zshare-generics=y",
]

[target.x86_64-pc-windows-msvc]
linker = "rust-lld.exe"
rustflags = ["-Zshare-generics=n"]

Running

Run

cargo run

It will take a while, since it's compiling a whole game engine.
Subsequent compiles will be iterative and faster.

Bevy Examples

Continuing Bevy learning with Bevy Examples

Sprite Animation

Showing chicken running and plants growing using sprite sheet as reference.