use std::cmp::Ordering; use num_traits::{AsPrimitive, Num}; use num_traits::real::Real; use crate::bitfield; /// Multiply cave story degrees (0-255, which corresponds to 0°-360°) with this to get /// respective value in radians. pub const CDEG_RAD: f64 = std::f64::consts::PI * 0.003950617283950617; bitfield! { #[derive(Clone, Copy)] pub struct Flag(u32); impl Debug; pub hit_left_wall, set_hit_left_wall: 0; // 0x01 pub hit_top_wall, set_hit_top_wall: 1; // 0x02 pub hit_right_wall, set_hit_right_wall: 2; // 0x04 pub hit_bottom_wall, set_hit_bottom_wall: 3; // 0x08 pub hit_right_slope, set_hit_right_slope: 4; // 0x10 pub hit_left_slope, set_hit_left_slope: 5; // 0x20 pub snack_destroy, set_snack_destroy: 6; // 0x40 pub flag_x80, set_flag_x80: 7; // 0x80 pub in_water, set_in_water: 8; // 0x100 pub weapon_hit_block, set_weapon_hit_block: 9; // 0x200 pub hit_by_spike, set_hit_by_spike: 10; // 0x400 pub water_splash_facing_right, set_water_splash_facing_right: 11; // 0x800 pub force_left, set_force_left: 12; // 0x1000 pub force_up, set_force_up: 13; // 0x2000 pub force_right, set_force_right: 14; // 0x4000 pub force_down, set_force_down: 15; // 0x8000 pub hit_left_bigger_half, set_hit_left_bigger_half: 16; // 0x10000 pub hit_left_smaller_half, set_hit_left_smaller_half: 17; // 0x20000 pub hit_right_smaller_half, set_hit_right_smaller_half: 18; // 0x40000 pub hit_right_bigger_half, set_hit_right_bigger_half: 19; // 0x80000 } bitfield! { #[derive(Clone, Copy)] pub struct Equipment(u16); impl Debug; pub has_booster_0_8, set_booster_0_8: 0; // 0x01 / 0001 pub has_map, set_map: 1; // 0x02 / 0002 pub has_arms_barrier, set_arms_barrier: 2; // 0x04 / 0004 pub has_turbocharge, set_turbocharge: 3; // 0x08 / 0008 pub has_air_tank, set_air_tank: 4; // 0x10 / 0016 pub has_booster_2_0, set_booster_2_0: 5; // 0x20 / 0032 pub has_mimiga_mask, set_mimiga_mask: 6; // 0x40 / 0064 pub has_whimsical_star, set_whimsical_star: 7; // 0x080 / 0128 pub has_nikumaru, set_nikumaru: 8; // 0x100 / 0256 // for custom equips pub unused_1, set_unused_1: 9; // 0x200 / 0512 pub unused_2, set_unused_2: 10; // 0x400 / 1024 pub unused_3, set_unused_3: 11; // 0x800 / 2048 pub unused_4, set_unused_4: 12; // 0x1000 / 4096 pub unused_5, set_unused_5: 13; // 0x2000 / 8192 // bit 14 and 15 aren't accessible via TSC without abusing overflows (won't work in strict mode) pub unused_6, set_unused_6: 14; // 0x4000 / @384 pub unused_7, set_unused_7: 15; // 0x8000 / P768 } bitfield! { #[derive(Clone, Copy)] pub struct Condition(u16); impl Debug; pub interacted, set_interacted: 0; // 0x01 pub hidden, set_hidden: 1; // 0x02 pub fallen, set_fallen: 2; // 0x04 pub explode_die, set_explode_die: 3; // 0x08 pub damage_boss, set_damage_boss: 4; // 0x10 pub increase_acceleration, set_increase_acceleration: 5; // 0x20 pub cond_x40, set_cond_x40: 6; // 0x40 pub alive, set_alive: 7; // 0x80 // engine specific flags pub drs_dont_remove, set_drs_dont_remove: 13; pub drs_boss, set_drs_boss: 14; pub drs_destroyed, set_drs_destroyed: 15; } bitfield! { #[derive(Clone, Copy)] pub struct KeyState(u16); impl Debug; pub left, set_left: 0; pub right, set_right: 1; pub up, set_up: 2; pub down, set_down: 3; pub map, set_map: 4; pub jump, set_jump: 5; pub fire, set_fire: 6; pub weapon_next, set_weapon_next: 7; pub weapon_prev, set_weapon_prev: 8; } bitfield! { #[derive(Clone, Copy)] pub struct ControlFlags(u16); impl Debug; pub tick_world, set_tick_world: 0; // 0x01 pub control_enabled, set_control_enabled: 1; // 0x02 pub interactions_disabled, set_interactions_disabled: 2; // 0x04 pub credits_running, set_credits_running: 3; // 0x08 // engine specific flags pub wind, set_wind: 15; } #[derive(Debug, Clone, Copy, PartialEq, Eq)] #[repr(u8)] pub enum FadeDirection { Left = 0, Up, Right, Down, Center, } impl FadeDirection { pub fn from_int(val: usize) -> Option { match val { 0 => { Some(FadeDirection::Left) } 1 => { Some(FadeDirection::Up) } 2 => { Some(FadeDirection::Right) } 3 => { Some(FadeDirection::Down) } 4 => { Some(FadeDirection::Center) } _ => { None } } } pub fn opposite(&self) -> FadeDirection { match self { FadeDirection::Left => { FadeDirection::Right } FadeDirection::Up => { FadeDirection::Down } FadeDirection::Right => { FadeDirection::Left } FadeDirection::Down => { FadeDirection::Up } FadeDirection::Center => { FadeDirection::Center } } } } #[derive(Debug, PartialEq, Copy, Clone)] #[repr(u8)] pub enum FadeState { Visible, FadeIn(i8, FadeDirection), Hidden, FadeOut(i8, FadeDirection), } #[derive(Debug, Clone, Copy, PartialEq, Eq)] #[repr(u8)] pub enum Direction { Left = 0, Up, Right, Bottom, FacingPlayer, } pub const FILE_TYPES: [&str; 3] = [".png", ".bmp", ".pbm"]; impl Direction { pub fn from_int(val: usize) -> Option { match val { 0 => { Some(Direction::Left) } 1 => { Some(Direction::Up) } 2 => { Some(Direction::Right) } 3 => { Some(Direction::Bottom) } _ => { None } } } pub fn from_int_facing(val: usize) -> Option { match val { 0 => { Some(Direction::Left) } 1 => { Some(Direction::Up) } 2 => { Some(Direction::Right) } 3 => { Some(Direction::Bottom) } 4 => { Some(Direction::FacingPlayer) } _ => { None } } } pub fn opposite(&self) -> Direction { match self { Direction::Left => { Direction::Right } Direction::Up => { Direction::Bottom } Direction::Right => { Direction::Left } Direction::Bottom => { Direction::Up } Direction::FacingPlayer => unreachable!(), } } pub fn vector_x(&self) -> isize { match self { Direction::Left => { -1 } Direction::Up => { 0 } Direction::Right => { 1 } Direction::Bottom => { 0 } Direction::FacingPlayer => unreachable!(), } } pub fn vector_y(&self) -> isize { match self { Direction::Left => { 0 } Direction::Up => { -1 } Direction::Right => { 0 } Direction::Bottom => { 1 } Direction::FacingPlayer => unreachable!(), } } } #[derive(Debug, Clone, Copy)] pub struct Rect { pub left: T, pub top: T, pub right: T, pub bottom: T, } impl Rect { pub fn new(left: T, top: T, right: T, bottom: T) -> Rect { Rect { left, top, right, bottom, } } pub fn new_size(x: T, y: T, width: T, height: T) -> Rect { Rect { left: x, top: y, right: x.add(width), bottom: y.add(height), } } pub fn from(rect: crate::ggez::graphics::Rect) -> Rect { Rect { left: rect.x, top: rect.y, right: (rect.x + rect.w), bottom: (rect.y + rect.h), } } pub fn width(&self) -> T { if let Some(Ordering::Greater) = self.left.partial_cmp(&self.right) { self.left.sub(self.right) } else { self.right.sub(self.left) } } pub fn height(&self) -> T { if let Some(Ordering::Greater) = self.top.partial_cmp(&self.bottom) { self.top.sub(self.bottom) } else { self.bottom.sub(self.top) } } } impl> Into for Rect { fn into(self) -> crate::ggez::graphics::Rect { crate::ggez::graphics::Rect::new(self.left.as_(), self.top.as_(), self.width().as_(), self.height().as_()) } } #[inline(always)] pub fn fix9_scale(val: isize, scale: f32) -> f32 { (val as f64 * scale as f64 / 512.0).floor() as f32 / scale } #[inline(always)] fn lerp_f64(v1: f64, v2: f64, t: f64) -> f64 { v1 * (1.0 - t.fract()) + v2 * t.fract() } #[inline(always)] pub fn interpolate_fix9_scale(old_val: isize, val: isize, frame_delta: f64, scale: f32) -> f32 { ((lerp_f64(old_val as f64, val as f64, frame_delta) * scale as f64 / 512.0).floor() / (scale as f64)) as f32 }