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Add API to access Bitmap pixel and mask data #59

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a9279af
Add API to access `Bitmap` pixel and mask data
parasyte Sep 6, 2023
5b00e9c
Fix UB caused by Bitmap methods with interior mutability
parasyte Sep 8, 2023
6064d9f
Make Bitmap inner borrow errors non-panicking
parasyte Sep 9, 2023
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24 changes: 12 additions & 12 deletions examples/sprite_game.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ use {
anyhow::Error,
crankstart::{
crankstart_game,
graphics::{rect_make, Bitmap, BitmapData, Graphics, LCDBitmapFlip, PDRect},
graphics::{rect_make, Bitmap, BitmapDataView, Graphics, LCDBitmapFlip, PDRect},
log_to_console,
sprite::{Sprite, SpriteCollider, SpriteManager},
system::{PDButtons, System},
Expand Down Expand Up @@ -142,7 +142,7 @@ impl PlayerHandler {
}

struct BulletHandler {
bullet_image_data: BitmapData,
bullet_image_data: BitmapDataView,
}

impl BulletHandler {
Expand Down Expand Up @@ -181,7 +181,7 @@ impl BulletHandler {
}

struct EnemyPlaneHandler {
enemy_image_data: BitmapData,
enemy_image_data: BitmapDataView,
}

impl EnemyPlaneHandler {
Expand All @@ -202,7 +202,7 @@ impl EnemyPlaneHandler {
}

struct BackgroundPlaneHandler {
background_plane_image_data: BitmapData,
background_plane_image_data: BitmapDataView,
}

impl BackgroundPlaneHandler {
Expand Down Expand Up @@ -304,7 +304,7 @@ impl SpriteGame {
let sprite_manager = SpriteManager::get_mut();
let mut background = sprite_manager.new_sprite()?;
let background_image = graphics.load_bitmap("sprite_game_images/background")?;
let background_image_data = background_image.get_data()?;
let background_image_data = background_image.get_data()?.to_view();
let bounds = rect_make(0.0, 0.0, 400.0, 240.0);
background.set_bounds(&bounds)?;
background.set_z_index(0)?;
Expand All @@ -320,7 +320,7 @@ impl SpriteGame {
// setup player
let mut player = sprite_manager.new_sprite()?;
let player_image = graphics.load_bitmap("sprite_game_images/player")?;
let player_image_data = player_image.get_data()?;
let player_image_data = player_image.get_data()?.to_view();
player.set_image(player_image, LCDBitmapFlip::kBitmapUnflipped)?;
let center_x: f32 = 200.0 - player_image_data.width as f32 / 2.0;
let center_y: f32 = 180.0 - player_image_data.height as f32 / 2.0;
Expand All @@ -338,14 +338,14 @@ impl SpriteGame {
player.move_to(center_x, center_y)?;

let bullet_image = graphics.load_bitmap("sprite_game_images/doubleBullet")?;
let bullet_image_data = bullet_image.get_data()?;
let bullet_image_data = bullet_image.get_data()?.to_view();

let enemy_plane_image = graphics.load_bitmap("sprite_game_images/plane1")?;
let enemy_image_data = enemy_plane_image.get_data()?;
let enemy_image_data = enemy_plane_image.get_data()?.to_view();
let enemy_plane_handler = EnemyPlaneHandler { enemy_image_data };

let background_plane_image = graphics.load_bitmap("sprite_game_images/plane2")?;
let background_plane_image_data = background_plane_image.get_data()?;
let background_plane_image_data = background_plane_image.get_data()?.to_view();
let background_plane_handler = BackgroundPlaneHandler {
background_plane_image_data,
};
Expand Down Expand Up @@ -392,7 +392,7 @@ impl SpriteGame {
fn player_fire(&mut self) -> Result<(), Error> {
let sprite_manager = SpriteManager::get_mut();
let player_bounds = self.player.get_bounds()?;
let bullet_image_data = self.bullet_image.get_data()?;
let bullet_image_data = self.bullet_image.get_data()?.to_view();
let x = player_bounds.x + player_bounds.width / 2.0 - bullet_image_data.width as f32 / 2.0;
let y = player_bounds.y;

Expand Down Expand Up @@ -444,7 +444,7 @@ impl SpriteGame {
let sprite_manager = SpriteManager::get_mut();
let mut plane = sprite_manager.new_sprite()?;
plane.set_collision_response_type(Some(Box::new(OverlapCollider {})))?;
let plane_image_data = self.enemy_plane_image.get_data()?;
let plane_image_data = self.enemy_plane_image.get_data()?.to_view();
plane.set_image(
self.enemy_plane_image.clone(),
LCDBitmapFlip::kBitmapUnflipped,
Expand Down Expand Up @@ -480,7 +480,7 @@ impl SpriteGame {
fn create_background_plane(&mut self) -> Result<(), Error> {
let sprite_manager = SpriteManager::get_mut();
let mut plane = sprite_manager.new_sprite()?;
let plane_image_data = self.background_plane_image.get_data()?;
let plane_image_data = self.background_plane_image.get_data()?.to_view();
plane.set_image(
self.background_plane_image.clone(),
LCDBitmapFlip::kBitmapUnflipped,
Expand Down
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