From aeab78e3656e9a01b26811af9ea96c0e9aaf0e98 Mon Sep 17 00:00:00 2001
From: dani <>
Date: Sat, 5 Aug 2023 14:14:18 +0000
Subject: [PATCH] select tiles in map edit

---
 examples/basic/gfx.gif      | Bin 27642 -> 27650 bytes
 src/background.rs           |   3 +
 src/gsa_render_to_screen.rs |   4 +-
 src/mapedit.rs              | 145 +++++++++++++++++++++++++++++-------
 4 files changed, 123 insertions(+), 29 deletions(-)

diff --git a/examples/basic/gfx.gif b/examples/basic/gfx.gif
index 50e41314390883f35f73bad6b044c896d5079137..d58cb06df7b80ab1d2e40c80fd74b01ac0fd88d7 100644
GIT binary patch
delta 8108
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diff --git a/src/background.rs b/src/background.rs
index 2696f35..2987eeb 100644
--- a/src/background.rs
+++ b/src/background.rs
@@ -9,6 +9,8 @@ pub struct Background {
     pub scroll: IVec2,
     /// Are tiles indices half-tile indices?
     pub half_tile: bool,
+    /// Is this background being displayed?
+    pub active: bool,
 }
 
 impl Default for Background {
@@ -19,6 +21,7 @@ impl Default for Background {
             tiles,
             scroll: IVec2::ZERO,
             half_tile: false,
+            active: true,
         }
     }
 }
diff --git a/src/gsa_render_to_screen.rs b/src/gsa_render_to_screen.rs
index ec36170..e0d4ecc 100644
--- a/src/gsa_render_to_screen.rs
+++ b/src/gsa_render_to_screen.rs
@@ -69,7 +69,9 @@ fn render_map(target: &mut [u8], map: &Background, tileset: &[u8], screen_size:
 
 pub(crate) fn render_to_screen(target: &mut [u8], gsa: &Gsa, tileset: &[u8], screen_size: IVec2) {
     for i in 0..MAX_BACKGROUNDS {
-        render_map(target, &gsa.bgs[i], tileset, screen_size);
+        if gsa.bgs[i].active {
+            render_map(target, &gsa.bgs[i], tileset, screen_size);
+        }
         for sprite in &gsa.sprites {
             if sprite.tile != EMPTY_TILE && sprite.priority == i as u8 {
                 draw_tile(target, sprite.pos, sprite.tile, tileset, false, screen_size);
diff --git a/src/mapedit.rs b/src/mapedit.rs
index 7c96be0..3ef4b48 100644
--- a/src/mapedit.rs
+++ b/src/mapedit.rs
@@ -17,6 +17,8 @@ use winit::{
 };
 
 const SPR_CURSOR: usize = 0x01;
+const TILE_CURSOR: u16 = 0x7308;
+const TILE_MARKER: u16 = 0x7309;
 
 pub(crate) fn run_mapedit() {
     println!("running map edit");
@@ -36,7 +38,27 @@ pub(crate) fn run_mapedit() {
 
     gsa.reset_bgs();
     gsa.reset_sprites();
-    gsa.sprites[SPR_CURSOR].tile = 0x7308;
+
+    gsa.sprites[SPR_CURSOR].tile = TILE_CURSOR;
+    let mut gsa2 = Gsa {
+        sprites: [Sprite::default(); MAX_SPRITES],
+        palette,
+        bgs: Default::default(),
+        font: FONT_BOLD,
+        pressed: 0,
+        released: 0,
+        down: 0,
+    };
+    gsa2.reset_bgs();
+    gsa2.reset_sprites();
+
+    for y in 0..TILESET_SIZE {
+        for x in 0..TILESET_SIZE {
+            gsa2.bgs[0].tiles[x][y] = (x + (y << 8)) as u16;
+        }
+    }
+    gsa2.bgs[0].active = false;
+    gsa2.bgs[1].active = false;
 
     let event_loop = EventLoop::new();
     let size = LogicalSize::new(1280, 720);
@@ -54,26 +76,48 @@ pub(crate) fn run_mapedit() {
     window.request_redraw();
     let mut mouse_pos = IVec2::ZERO;
     let mut tile_pos = IVec2::ZERO;
+    let mut tile_pos2 = IVec2::ZERO;
     let mut left_down = false;
     let mut middle_down = false;
     let mut right_down = false;
+    let mut selected_tile = IVec2::ZERO;
+    gsa2.bgs[1].tiles[0][0] = TILE_MARKER;
     event_loop.run(move |event, _, control_flow| {
         let mouse_pos = &mut mouse_pos;
         let tile_pos = &mut tile_pos;
+        let tile_pos2 = &mut tile_pos2;
         let left_down = &mut left_down;
         let middle_down = &mut middle_down;
         let right_down = &mut right_down;
+        let selected_tile = &mut selected_tile;
+
         match event {
             Event::WindowEvent { event, .. } => match event {
-                WindowEvent::KeyboardInput {
-                    input:
-                        KeyboardInput {
-                            virtual_keycode: Some(VirtualKeyCode::Escape, ..),
-                            ..
-                        },
-                    ..
-                } => {
-                    *control_flow = ControlFlow::Exit;
+                WindowEvent::KeyboardInput { input, .. } => {
+                    match (input.state, input.virtual_keycode.unwrap()) {
+                        (winit::event::ElementState::Pressed, VirtualKeyCode::Escape) => {
+                            *control_flow = ControlFlow::Exit;
+                        }
+                        (winit::event::ElementState::Pressed, VirtualKeyCode::LShift) => {
+                            gsa.bgs[0].active = false;
+                            gsa.bgs[1].active = false;
+                            gsa.bgs[2].active = false;
+                            gsa2.bgs[0].active = true;
+                            gsa2.bgs[1].active = true;
+                            gsa.sprites[SPR_CURSOR].tile = EMPTY_TILE;
+                            gsa2.sprites[SPR_CURSOR].tile = TILE_CURSOR;
+                        }
+                        (winit::event::ElementState::Released, VirtualKeyCode::LShift) => {
+                            gsa.bgs[0].active = true;
+                            gsa.bgs[1].active = true;
+                            gsa.bgs[2].active = true;
+                            gsa2.bgs[0].active = false;
+                            gsa2.bgs[1].active = false;
+                            gsa.sprites[SPR_CURSOR].tile = TILE_CURSOR;
+                            gsa2.sprites[SPR_CURSOR].tile = EMPTY_TILE;
+                        }
+                        _ => {}
+                    }
                 }
                 WindowEvent::MouseInput { state, button, .. } => match (state, button) {
                     (winit::event::ElementState::Pressed, winit::event::MouseButton::Left) => {
@@ -103,34 +147,70 @@ pub(crate) fn run_mapedit() {
                     };
                     let delta = new_pos - *mouse_pos;
                     if *middle_down {
-                        gsa.bgs[0].scroll -= delta;
-                        gsa.bgs[1].scroll -= delta;
-                        gsa.bgs[2].scroll -= delta;
+                        if gsa.bgs[0].active {
+                            // normal mode
+                            gsa.bgs[0].scroll -= delta;
+                            gsa.bgs[1].scroll -= delta;
+                            gsa.bgs[2].scroll -= delta;
+                        } else {
+                            // tile select mode
+                            gsa2.bgs[0].scroll -= delta;
+                            gsa2.bgs[1].scroll -= delta;
+                            gsa2.bgs[2].scroll -= delta;
+                        }
                     }
                     *mouse_pos = new_pos;
-                    *tile_pos = (new_pos + gsa.bgs[0].scroll) / TILE_SIZE as i32;
+                    *tile_pos = IVec2 {
+                        x: (new_pos.x + gsa.bgs[0].scroll.x).div_euclid(TILE_SIZE as i32),
+                        y: (new_pos.y + gsa.bgs[0].scroll.y).div_euclid(TILE_SIZE as i32),
+                    };
+                    *tile_pos2 = IVec2 {
+                        x: (new_pos.x + gsa2.bgs[0].scroll.x).div_euclid(TILE_SIZE as i32),
+                        y: (new_pos.y + gsa2.bgs[0].scroll.y).div_euclid(TILE_SIZE as i32),
+                    };
                     let cursor_pos = *tile_pos * TILE_SIZE as i32 - gsa.bgs[0].scroll;
+                    let cursor_pos2 = *tile_pos2 * TILE_SIZE as i32 - gsa2.bgs[0].scroll;
                     gsa.sprites[SPR_CURSOR].pos = cursor_pos;
+                    gsa2.sprites[SPR_CURSOR].pos = cursor_pos2;
                 }
                 _ => {}
             },
 
             Event::MainEventsCleared => {
-                if *left_down {
-                    if tile_pos.x >= 0
-                        && tile_pos.y >= 0
-                        && tile_pos.x < BACKGROUND_MAX_SIZE as i32
-                        && tile_pos.y < BACKGROUND_MAX_SIZE as i32
-                    {
-                        gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = 0;
+                if gsa.bgs[0].active {
+                    // normal mode
+                    if *left_down {
+                        if tile_pos.x >= 0
+                            && tile_pos.y >= 0
+                            && tile_pos.x < BACKGROUND_MAX_SIZE as i32
+                            && tile_pos.y < BACKGROUND_MAX_SIZE as i32
+                        {
+                            let tile = (selected_tile.x + (selected_tile.y << 8)) as u16;
+                            gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = tile;
+                        }
+                    } else if *right_down {
+                        if tile_pos.x >= 0
+                            && tile_pos.y >= 0
+                            && tile_pos.x < BACKGROUND_MAX_SIZE as i32
+                            && tile_pos.y < BACKGROUND_MAX_SIZE as i32
+                        {
+                            gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = EMPTY_TILE;
+                        }
                     }
-                } else if *right_down {
-                    if tile_pos.x >= 0
-                        && tile_pos.y >= 0
-                        && tile_pos.x < BACKGROUND_MAX_SIZE as i32
-                        && tile_pos.y < BACKGROUND_MAX_SIZE as i32
-                    {
-                        gsa.bgs[0].tiles[tile_pos.x as usize][tile_pos.y as usize] = EMPTY_TILE;
+                } else {
+                    // tile select mode
+                    if *left_down {
+                        if tile_pos2.x >= 0
+                            && tile_pos2.y >= 0
+                            && tile_pos2.x < BACKGROUND_MAX_SIZE as i32
+                            && tile_pos2.y < BACKGROUND_MAX_SIZE as i32
+                        {
+                            gsa2.bgs[1].tiles[selected_tile.x as usize][selected_tile.y as usize] =
+                                EMPTY_TILE;
+                            *selected_tile = *tile_pos2;
+                            gsa2.bgs[1].tiles[selected_tile.x as usize][selected_tile.y as usize] =
+                                TILE_MARKER;
+                        }
                     }
                 }
 
@@ -154,6 +234,15 @@ pub(crate) fn run_mapedit() {
                         y: size.height as i32,
                     },
                 );
+                render_to_screen(
+                    &mut screen_buffer,
+                    &gsa2,
+                    &tileset,
+                    IVec2 {
+                        x: size.width as i32,
+                        y: size.height as i32,
+                    },
+                );
                 render_to_window(
                     &mut window_buffer,
                     &mut screen_buffer,