Modify The `Texture`

The colors of the sprite will show up exactly as in the source file, but sometimes being able to slightly modify the overall color is useful - for instance, coloring an angry enemy more red, or making a frozen enemy blue. Amethyst has a Component called Tint to do this.

To use Tint, register Tint as a new Component with the world and build it as part of the entity. Tint will multiply the color values of the sprite by its own values, so a Tint with a white color will have no effect on the sprite.

rust

# extern crate amethyst;
# use amethyst::assets::{AssetStorage, DefaultLoader, Handle, Loader};
use amethyst::core::transform::Transform;
# use amethyst::prelude::*;
use amethyst::renderer::{
    palette::Srgba, resources::Tint, SpriteRender, SpriteSheet, Texture, Transparent,
};
use amethyst::window::ScreenDimensions;

# pub fn load_texture<N>(name: N, world: &World) -> Handle<Texture>
# where
#   N: Into<String>,
# {
#   unimplemented!();
# }
# 
# pub fn load_sprite_sheet(texture: Handle<Texture>) -> SpriteSheet {
#   unimplemented!();
# }
#[derive(Debug)]
struct ExampleState;

impl SimpleState for ExampleState {
    fn on_start(&mut self, mut data: StateData<'_, GameData>) {
#       let texture_handle = load_texture("texture/sprite_sheet.png", &data.world);
# 
#       let sprite_sheet = load_sprite_sheet(texture_handle);
#       let sprite_sheet_handle = {
#           let loader = data.resources.get::<DefaultLoader>();
#           loader.load_from_data(
#               sprite_sheet,
#               (),
#               data.resources.get::<AssetStorage<SpriteSheet>>(),
#           )
#       };
        // ...

        self.initialize_sprite(&mut data.world, sprite_sheet_handle);
    }
}

impl ExampleState {
    fn initialize_sprite(&mut self, world: &mut World, sprite_sheet_handle: Handle<SpriteSheet>) {
        // ..

#       let (width, height) = {
#           let dim = resources.get::<ScreenDimensions>();
#           (dim.width(), dim.height())
#       };
# 
#       // Move the sprite to the middle of the window
#       let mut sprite_transform = Transform::default();
#       sprite_transform.set_translation_xyz(width / 2., height / 2., 0.);
# 
#       let sprite_render = SpriteRender::new(sprite_sheet_handle, 0); // First sprite

        // White shows the sprite as normal.
        // You can change the color at any point to modify the sprite's tint.
        let tint = Tint(Srgba::new(1.0, 1.0, 1.0, 1.0));

        world.push((sprite_render, sprite_transform, tint));
    }
}
# fn main() {}

Modify The `Texture`

Modify The Texture

Modify The `Texture`