android changes

src/input/touch_controls.rs

@@ -99,14 +99,6 @@ impl TouchControls {
     }
 
     pub fn draw(&self, canvas_size: (f32, f32), constants: &EngineConstants, texture_set: &mut TextureSet, ctx: &mut Context) -> GameResult {
-        let batch = texture_set.get_or_load_batch(ctx, constants, "Caret")?;
-        let rect = Rect::new_size(104, 120, 24, 24);
-        for point in self.points.iter() {
-            batch.add_rect(point.position.0 as f32 - 12.0, point.position.1 as f32 - 12.0, &rect);
-        }
-
-        batch.draw(ctx)?;
-
         if self.control_type == TouchControlType::Controls {
             let batch = texture_set.get_or_load_batch(ctx, constants, "builtin/touch")?;
             let color = (255, 255, 255, 160);

src/lib.rs

@@ -249,6 +249,10 @@ pub fn android_main() {
     request_perms().expect("Failed to attach to the JVM and request storage permissions.");
 
     env::set_var("CAVESTORY_DATA_DIR", "/storage/emulated/0/doukutsu");
+
+    let _ = std::fs::create_dir("/storage/emulated/0/doukutsu/");
+    let _ = std::fs::write("/storage/emulated/0/doukutsu/.nomedia", b"");
+
     init().unwrap();
 }
 

src/npc/ai/sand_zone.rs

@@ -1,7 +1,8 @@
 use ggez::GameResult;
 use num_traits::{abs, clamp};
 
-use crate::common::Direction;
+use crate::caret::CaretType;
+use crate::common::{CDEG_RAD, Direction};
 use crate::npc::list::NPCList;
 use crate::npc::NPC;
 use crate::player::Player;
@@ -286,8 +287,273 @@ impl NPC {
         Ok(())
     }
 
-    pub(crate) fn tick_n049_skullhead(&mut self, state: &mut SharedGameState, npc_list: &NPCList) -> GameResult {
+    pub(crate) fn tick_n049_skullhead(&mut self, state: &mut SharedGameState, players: [&mut Player; 2], npc_list: &NPCList) -> GameResult {
-        let parent = self.get_parent_ref_mut(npc_list);
+        let mut parent = self.get_parent_ref_mut(npc_list);
+
+        if self.action_num > 9 && parent.as_ref().map(|n| n.npc_type == 3).unwrap_or(false) {
+            self.action_num = 3;
+            self.vel_x = 0;
+            self.vel_y = 0;
+            self.action_counter2 = 1;
+        }
+
+        if self.flags.hit_left_wall() {
+            self.direction = Direction::Right;
+            self.vel_x = 0x100;
+        }
+
+        if self.flags.hit_right_wall() {
+            self.direction = Direction::Left;
+            self.vel_x = -0x100;
+        }
+
+        match self.action_num {
+            0 | 1 => {
+                if self.action_num == 0 {
+                    self.action_num = if parent.is_some() { 10 } else { 1 };
+                }
+
+                self.action_counter += 1;
+                if self.action_counter > 3 {
+                    self.vel_y = -0x400;
+                    self.action_num = 3;
+                    self.anim_num = 2;
+
+                    if self.action_counter2 > 0 {
+                        self.vel_x = if self.direction == Direction::Left { -0x200 } else { 0x200 };
+                    } else if self.direction != Direction::Left {
+                        self.vel_x = 0x100;
+                    } else {
+                        self.vel_x = -0x100;
+                    }
+                }
+
+                self.anim_num = 1;
+            }
+            3 => {
+                if self.flags.hit_bottom_wall() {
+                    self.action_num = 1;
+                    self.action_counter = 0;
+                    self.vel_x = 0;
+                }
+
+                self.anim_num = if self.flags.hit_bottom_wall() || self.vel_y > 0 { 1 } else { 2 };
+            }
+            10 => {
+                if self.vel_y2 >= 50 {
+                    let player = self.get_closest_player_mut(players);
+
+                    if abs(self.x - player.x) < 0x10000
+                        && abs(self.y - player.y) < 0xc000 {
+                        self.action_num = 11;
+                        self.action_counter = 0;
+                        self.anim_num = 2;
+                    }
+                } else {
+                    self.vel_y2 += 1;
+                }
+            }
+            11 => {
+                self.action_counter += 1;
+                if self.action_counter == 30 || self.action_counter == 35 {
+                    let player = self.get_closest_player_mut(players);
+
+                    let angle = f64::atan2((self.y + 0x800 - player.y) as f64, (self.x - player.x) as f64);
+
+                    let mut npc = NPC::create(50, &state.npc_table);
+                    npc.cond.set_alive(true);
+                    npc.x = self.x;
+                    npc.y = self.y;
+                    npc.vel_x = (angle.cos() * -1024.0) as i32;
+                    npc.vel_y = (angle.sin() * -1024.0) as i32;
+
+                    let _ = npc_list.spawn(0x100, npc);
+                    state.sound_manager.play_sfx(39);
+                }
+
+                if self.action_counter > 50 {
+                    self.action_num = 10;
+                    self.vel_y2 = 0;
+                    self.anim_num = 1;
+                }
+            }
+            _ => {}
+        }
+
+        if self.action_num > 9 {
+            if let Some(parent) = parent {
+                self.x = parent.x;
+                self.y = parent.y + 0x2000;
+                self.direction = parent.direction;
+                parent.vel_y2 -= 1;
+            }
+        }
+
+        self.vel_y += 0x40;
+        if self.vel_y > 0x5ff {
+            self.vel_y = 0x5ff;
+        }
+
+        self.x += self.vel_x;
+        self.y += self.vel_y;
+
+
+        let dir_offset = if self.direction == Direction::Left { 0 } else { 3 };
+
+        self.anim_rect = state.constants.npc.n049_skullhead[self.anim_num as usize + dir_offset];
+
+        Ok(())
+    }
+
+    pub(crate) fn tick_n050_skeleton_projectile(&mut self, state: &mut SharedGameState) -> GameResult {
+        match self.action_num {
+            0 | 1 => {
+                if self.action_num == 0 {
+                    if self.direction == Direction::Right {
+                        self.action_num = 2;
+                    }
+                }
+
+                self.x += self.vel_x;
+                self.y += self.vel_y;
+
+                if self.flags.hit_left_wall() {
+                    self.action_num = 2;
+                    self.vel_x = 0x200;
+                    self.action_counter2 += 1;
+                }
+
+                if self.flags.hit_right_wall() {
+                    self.action_num = 2;
+                    self.vel_x = -0x200;
+                    self.action_counter2 += 1;
+                }
+
+                if self.flags.hit_top_wall() {
+                    self.action_num = 2;
+                    self.vel_y = 0x200;
+                    self.action_counter2 += 1;
+                }
+
+                if self.flags.hit_bottom_wall() {
+                    self.action_num = 2;
+                    self.vel_y = -0x200;
+                    self.action_counter2 += 1;
+                }
+            }
+            2 => {
+                self.vel_y += 0x40;
+                self.x += self.vel_x;
+                self.y += self.vel_y;
+
+                if self.flags.hit_bottom_wall() {
+                    self.action_counter2 += 1;
+                    if self.action_counter2 > 1 {
+                        state.create_caret(self.x, self.y, CaretType::ProjectileDissipation, Direction::Left);
+                        self.cond.set_alive(false);
+                    }
+                }
+            }
+            _ => {}
+        }
+
+        self.vel_y = clamp(self.vel_y, -0x5ff, 0x5ff);
+
+        self.anim_counter += 1;
+        if self.anim_counter > 1 {
+            self.anim_counter = 0;
+
+            self.anim_num = if self.direction == Direction::Left {
+                (self.anim_num + 1) % 4
+            } else {
+                self.anim_num.wrapping_sub(1) % 4
+            }
+        }
+
+        self.anim_rect = state.constants.npc.n050_skeleton_projectile[self.anim_num as usize];
+
+        Ok(())
+    }
+
+    pub(crate) fn tick_n051_crow_and_skullhead(&mut self, state: &mut SharedGameState, players: [&mut Player; 2], npc_list: &NPCList) -> GameResult {
+        let player = self.get_closest_player_mut(players);
+
+        match self.action_num {
+            0 | 1 => {
+                if self.action_num == 0 {
+                    self.action_num = 1;
+                    self.target_x = self.x;
+                    self.target_y = self.y;
+                    self.vel_y = 0x400;
+
+                    let mut npc = NPC::create(49, &state.npc_table);
+                    npc.cond.set_alive(true);
+                    npc.parent_id = self.id;
+                    let _ = npc_list.spawn(0, npc);
+                }
+
+                self.direction = if player.x >= self.x { Direction::Right } else { Direction::Left };
+                self.vel_y += (self.target_y - self.y).signum() * 0x0a;
+                self.vel_y = clamp(self.vel_y, -0x200, 0x200);
+
+                if self.vel_y2 >= 10 {
+                    self.action_num = 2;
+                } else {
+                    self.vel_y2 += 1;
+                }
+            }
+            2 => {
+                self.direction = if player.x >= self.x { Direction::Right } else { Direction::Left };
+
+                self.vel_x += if self.y <= player.y + 0x4000 {
+                    (player.x - self.x).signum() * 0x10
+                } else {
+                    (self.x - player.x).signum() * 0x10
+                };
+
+                self.vel_y += (player.y - self.y).signum() * 0x10;
+
+                if self.shock > 0 {
+                    self.vel_x = 0;
+                    self.vel_y += 0x20;
+                }
+            }
+            _ => {}
+        }
+
+        if self.vel_x < 0 && self.flags.hit_left_wall() {
+            self.vel_x = 0x100;
+        }
+
+        if self.vel_x > 0 && self.flags.hit_right_wall() {
+            self.vel_x = -0x100;
+        }
+
+        if self.vel_y < 0 && self.flags.hit_top_wall() {
+            self.vel_y = 0x100;
+        }
+
+        if self.vel_y > 0 && self.flags.hit_bottom_wall() {
+            self.vel_y = -0x100;
+        }
+
+        self.vel_x = clamp(self.vel_x, -0x400, 0x400);
+        self.vel_y = clamp(self.vel_y, -0x200, 0x200);
+
+        self.x += self.vel_x;
+        self.y += self.vel_y;
+
+        if self.shock > 0 {
+            self.anim_num = 4;
+        } else if self.action_num == 2 && self.y < player.y - 0x4000 {
+            self.anim_num = 0;
+        } else if self.action_num != 0 {
+            self.animate(1, 0, 1);
+        }
+
+        let dir_offset = if self.direction == Direction::Left { 0 } else { 5 };
+
+        self.anim_rect = state.constants.npc.n051_crow_and_skullhead[self.anim_num as usize + dir_offset];
 
         Ok(())
     }

src/npc/mod.rs

@@ -198,7 +198,9 @@ impl GameEntity<([&mut Player; 2], &NPCList, &mut Stage, &BulletManager)> for NP
             46 => self.tick_n046_hv_trigger(players),
             47 => self.tick_n047_sandcroc(state, players),
             48 => self.tick_n048_omega_projectiles(state),
-            49 => self.tick_n049_skullhead(state, npc_list),
+            49 => self.tick_n049_skullhead(state, players, npc_list),
+            50 => self.tick_n050_skeleton_projectile(state),
+            51 => self.tick_n051_crow_and_skullhead(state, players, npc_list),
             52 => self.tick_n052_sitting_blue_robot(state),
             55 => self.tick_n055_kazuma(state),
             58 => self.tick_n058_basu(state, players, npc_list),

src/rng.rs

@@ -5,7 +5,7 @@ pub trait RNG {
     fn next(&self) -> i32;
 
     fn range(&self, range: Range<i32>) -> i32 {
-        range.start.wrapping_add((self.next() >> 2) % (range.end.wrapping_sub(range.start).wrapping_add(1)))
+        range.start.saturating_add((self.next() >> 2) % range.len() as i32)
     }
 }
 

src/scene/loading_scene.rs

@@ -1,5 +1,7 @@
 use ggez::{Context, filesystem, GameResult};
+
 use crate::npc::NPCTable;
+use crate::scene::no_data_scene::NoDataScene;
 use crate::scene::Scene;
 use crate::shared_game_state::SharedGameState;
 use crate::stage::StageData;
@@ -15,30 +17,40 @@ impl LoadingScene {
             tick: 0,
         }
     }
+
+    fn load_stuff(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        let stages = StageData::load_stage_table(ctx, &state.base_path)?;
+        state.stages = stages;
+        let npc_tbl = filesystem::open(ctx, [&state.base_path, "/npc.tbl"].join(""))?;
+        let npc_table = NPCTable::load_from(npc_tbl)?;
+        state.npc_table = npc_table;
+        let head_tsc = filesystem::open(ctx, [&state.base_path, "/Head.tsc"].join(""))?;
+        let head_script = TextScript::load_from(head_tsc, &state.constants)?;
+        state.textscript_vm.set_global_script(head_script);
+
+        let arms_item_tsc = filesystem::open(ctx, [&state.base_path, "/ArmsItem.tsc"].join(""))?;
+        let arms_item_script = TextScript::load_from(arms_item_tsc, &state.constants)?;
+        state.textscript_vm.set_inventory_script(arms_item_script);
+
+        let stage_select_tsc = filesystem::open(ctx, [&state.base_path, "/StageSelect.tsc"].join(""))?;
+        let stage_select_script = TextScript::load_from(stage_select_tsc, &state.constants)?;
+        state.textscript_vm.set_stage_select_script(stage_select_script);
+
+        state.start_intro(ctx)?;
+
+        Ok(())
+    }
 }
 
 impl Scene for LoadingScene {
     fn tick(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
         // deferred to let the loading image draw
         if self.tick == 1 {
-            let stages = StageData::load_stage_table(ctx, &state.base_path)?;
+            if let Err(err) = self.load_stuff(state, ctx) {
-            state.stages = stages;
+                log::error!("Failed to load game data: {}", err);
-            let npc_tbl = filesystem::open(ctx, [&state.base_path, "/npc.tbl"].join(""))?;
-            let npc_table = NPCTable::load_from(npc_tbl)?;
-            state.npc_table = npc_table;
-            let head_tsc = filesystem::open(ctx, [&state.base_path, "/Head.tsc"].join(""))?;
-            let head_script = TextScript::load_from(head_tsc, &state.constants)?;
-            state.textscript_vm.set_global_script(head_script);
 
-            let arms_item_tsc = filesystem::open(ctx, [&state.base_path, "/ArmsItem.tsc"].join(""))?;
+                state.next_scene = Some(Box::new(NoDataScene::new(err)));
-            let arms_item_script = TextScript::load_from(arms_item_tsc, &state.constants)?;
+            }
-            state.textscript_vm.set_inventory_script(arms_item_script);
-
-            let stage_select_tsc = filesystem::open(ctx, [&state.base_path, "/StageSelect.tsc"].join(""))?;
-            let stage_select_script = TextScript::load_from(stage_select_tsc, &state.constants)?;
-            state.textscript_vm.set_stage_select_script(stage_select_script);
-
-            state.start_intro(ctx)?;
         }
 
         self.tick += 1;
@@ -46,11 +58,17 @@ impl Scene for LoadingScene {
     }
 
     fn draw(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
-        let batch = state.texture_set.get_or_load_batch(ctx, &state.constants, "Loading")?;
+        match state.texture_set.get_or_load_batch(ctx, &state.constants, "Loading") {
+            Ok(batch) => {
+                batch.add(((state.canvas_size.0 - batch.width() as f32) / 2.0).floor(),
+                          ((state.canvas_size.1 - batch.height() as f32) / 2.0).floor());
+                batch.draw(ctx)?;
+            }
+            Err(err) => {
+                state.next_scene = Some(Box::new(NoDataScene::new(err)));
+            }
+        }
 
-        batch.add(((state.canvas_size.0 - batch.width() as f32) / 2.0).floor(),
-                  ((state.canvas_size.1 - batch.height() as f32) / 2.0).floor());
-        batch.draw(ctx)?;
         Ok(())
     }
 }

src/scene/mod.rs

@@ -5,6 +5,7 @@ use crate::ui::Components;
 
 pub mod game_scene;
 pub mod loading_scene;
+pub mod no_data_scene;
 pub mod title_scene;
 
 /// Implement this trait on any object that represents an interactive game screen.

src/scene/no_data_scene.rs

@@ -0,0 +1,88 @@
+use ggez::{Context, GameError, GameResult};
+
+use crate::common::Rect;
+use crate::scene::Scene;
+use crate::shared_game_state::SharedGameState;
+
+pub struct NoDataScene {
+    flag: bool,
+    err: String,
+}
+
+impl NoDataScene {
+    pub fn new(err: GameError) -> Self {
+        Self {
+            flag: false,
+            err: err.to_string(),
+        }
+    }
+}
+
+static REL_URL: &str = "https://github.com/doukutsu-rs/game-data/releases";
+
+impl Scene for NoDataScene {
+    fn tick(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+
+        #[cfg(target_os = "android")]
+            {
+                if !self.flag {
+                    self.flag = true;
+                    let _ = std::fs::create_dir("/sdcard/doukutsu/");
+                    let _ = std::fs::write("/sdcard/doukutsu/extract game data here.txt", REL_URL);
+                    let _ = std::fs::write("/sdcard/doukutsu/.nomedia", b"");
+                }
+
+                let screen = Rect::new(0, 0, state.canvas_size.0 as isize, state.canvas_size.1 as isize);
+                if state.touch_controls.consume_click_in(screen) {
+                    if let Err(err) = webbrowser::open(REL_URL) {
+                        self.err = err.to_string();
+                    }
+                }
+            }
+        Ok(())
+    }
+
+    fn draw(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        {
+            let die = "doukutsu-rs internal error";
+            let die_width = state.font.text_width(die.chars().clone(), &state.constants);
+            state.font.draw_colored_text(die.chars(), (state.canvas_size.0 - die_width) / 2.0, 10.0,
+                                         (255, 100, 100, 255), &state.constants, &mut state.texture_set, ctx)?;
+        }
+
+        {
+            let ftl = "Failed to load game data.";
+            let ftl_width = state.font.text_width(ftl.chars().clone(), &state.constants);
+            state.font.draw_colored_text(ftl.chars(), (state.canvas_size.0 - ftl_width) / 2.0, 30.0,
+                                         (255, 100, 100, 255), &state.constants, &mut state.texture_set, ctx)?;
+        }
+
+        #[cfg(target_os = "android")]
+            {
+                let ftl = "It's likely that you haven't extracted the game data properly.";
+                let ftl2 = "Click here to open the guide.";
+                let ftl_width = state.font.text_width(ftl.chars().clone(), &state.constants);
+                let ftl2_width = state.font.text_width(ftl2.chars().clone(), &state.constants);
+                let ftl3_width = state.font.text_width(REL_URL.chars().clone(), &state.constants);
+
+                state.font.draw_colored_text(ftl.chars(), (state.canvas_size.0 - ftl_width) / 2.0, 60.0,
+                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
+
+
+                state.font.draw_colored_text(ftl2.chars(), (state.canvas_size.0 - ftl2_width) / 2.0, 80.0,
+                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
+
+                state.font.draw_colored_text(REL_URL.chars(), (state.canvas_size.0 - ftl3_width) / 2.0, 100.0,
+                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
+            }
+
+        {
+            let err_width = state.font.text_width(self.err.chars().clone(), &state.constants);
+            state.font.draw_text(self.err.chars(), (state.canvas_size.0 - err_width) / 2.0, 140.0,
+                                 &state.constants, &mut state.texture_set, ctx)?;
+        }
+
+
+        Ok(())
+    }
+}