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implemented scrolling background type

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dawnDus 2022-01-09 13:22:30 -05:00 committed by alula
parent 6339a612b5
commit e7b666b4cc
1 changed files with 34 additions and 13 deletions
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45
src/components/background.rs
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@ -1,7 +1,7 @@
use crate::{Context, GameResult, graphics, SharedGameState};
use crate::common::{Color, Rect}; use crate::common::{Color, Rect};
use crate::frame::Frame; use crate::frame::Frame;
use crate::stage::{BackgroundType, Stage, StageTexturePaths}; use crate::stage::{BackgroundType, Stage, StageTexturePaths};
use crate::{graphics, Context, GameResult, SharedGameState};
pub struct Background { pub struct Background {
pub tick: usize, pub tick: usize,
@ -10,10 +10,7 @@ pub struct Background {
impl Background { impl Background {
pub fn new() -> Self { pub fn new() -> Self {
Background { Background { tick: 0, prev_tick: 0 }
tick: 0,
prev_tick: 0,
}
} }
pub fn tick(&mut self) -> GameResult<()> { pub fn tick(&mut self) -> GameResult<()> {
@ -36,11 +33,7 @@ impl Background {
textures: &StageTexturePaths, textures: &StageTexturePaths,
stage: &Stage, stage: &Stage,
) -> GameResult { ) -> GameResult {
let batch = state.texture_set.get_or_load_batch( let batch = state.texture_set.get_or_load_batch(ctx, &state.constants, &textures.background)?;
ctx,
&state.constants,
&textures.background,
)?;
let scale = state.scale; let scale = state.scale;
let (frame_x, frame_y) = frame.xy_interpolated(state.frame_time); let (frame_x, frame_y) = frame.xy_interpolated(state.frame_time);
@ -88,6 +81,22 @@ impl Background {
} }
BackgroundType::Scrolling => { BackgroundType::Scrolling => {
graphics::clear(ctx, stage.data.background_color); graphics::clear(ctx, stage.data.background_color);
let (bg_width, bg_height) = (batch.width() as i32, batch.height() as i32);
let offset_x = self.tick as f32 % (bg_width as f32 / 3.0);
let interp_x = (offset_x * (1.0 - state.frame_time as f32)
+ (offset_x + 1.0) * state.frame_time as f32)
* 3.0
* scale;
let count_x = state.canvas_size.0 as i32 / bg_width + 6;
let count_y = state.canvas_size.1 as i32 / bg_height + 1;
for y in -1..count_y {
for x in -1..count_x {
batch.add((x * bg_width) as f32 - interp_x, (y * bg_height) as f32);
}
}
} }
BackgroundType::OutsideWind | BackgroundType::Outside | BackgroundType::OutsideUnknown => { BackgroundType::OutsideWind | BackgroundType::Outside | BackgroundType::OutsideUnknown => {
graphics::clear(ctx, Color::from_rgb(0, 0, 0)); graphics::clear(ctx, Color::from_rgb(0, 0, 0));
@ -107,10 +116,22 @@ impl Background {
batch.add_rect_scaled(x as f32, 0.0, 1.0, scale, &Rect::new_size(128, 0, 100, 1)); batch.add_rect_scaled(x as f32, 0.0, 1.0, scale, &Rect::new_size(128, 0, 100, 1));
} }
batch.add_rect_scaled((state.canvas_size.0 - 320.0) / 2.0, 0.0, 1.0, scale, &Rect::new_size(0, 0, 320, 1)); batch.add_rect_scaled(
(state.canvas_size.0 - 320.0) / 2.0,
0.0,
1.0,
scale,
&Rect::new_size(0, 0, 320, 1),
);
for x in ((-offset_x * 4)..(state.canvas_size.0 as i32)).step_by(320) { for x in ((-offset_x * 4)..(state.canvas_size.0 as i32)).step_by(320) {
batch.add_rect_scaled(x as f32, offset_y + 240.0, 1.0, scale + 4.0, &Rect::new_size(0, 239, 320, 1)); batch.add_rect_scaled(
x as f32,
offset_y + 240.0,
1.0,
scale + 4.0,
&Rect::new_size(0, 239, 320, 1),
);
} }
} }