3d

src/enemy.odin

@@ -1,27 +1,38 @@
 package main
-
-import hm "core:container/handle_map"
 import rl "vendor:raylib"
 
-// ИИ врага — летит к игроку. Вызывается из диспатчера sys_update
+Enemy :: struct {
+	using actor: Actor,
+	touch_dmg:   i32,
+}
+
+make_enemy :: proc(pos: rl.Vector2) -> Entity {
+	return Entity {
+		v = Enemy {
+			actor = Actor {
+				base = BaseEntity {
+					pos = pos,
+					col_size = 16,
+					gfx = {0 = GfxCircle{pos = {}, radius = 11, color = {220, 70, 70, 255}}},
+				},
+				hp = 40,
+				max_hp = 40,
+				speed = 55,
+			},
+			touch_dmg = 10,
+		},
+	}
+}
+
 enemy_update :: proc(state: ^GameState, e: ^Enemy, h: Handle, dt: f32) {
 	pe := get_entity(state, state.player)
-	if pe == nil do return
+	if pe != nil {
-
 		dir := get_base(pe).pos - e.pos
-	set_vel(&e.base, dir, e.speed)
+		e.vel = rl.Vector2Normalize(dir) * e.speed
-}
+	}
 
-// Мёртвые враги → лут
+	if e.hp <= 0 && !e.marked {
-sys_death :: proc(state: ^GameState) {
+		e.marked = true
-	it := hm.iterator_make(&state.entities)
+		spawn(state, make_ground_item(e.pos))
-	for e, _ in hm.iterate(&it) {
-		#partial switch &v in e.v {
-		case Enemy:
-			if v.hp <= 0 && !v.marked {
-				v.marked = true
-				spawn(state, make_ground_item(v.pos))
-			}
-		}
 	}
 }

src/entity.odin

@@ -0,0 +1,69 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+MAX_GFX :: 2
+
+Handle :: hm.Handle32
+
+MAX_ENTITIES :: 1024
+
+BaseEntity :: struct {
+	pos:      rl.Vector2,
+	vel:      rl.Vector2,
+	col_size: f32,
+	marked:   bool,
+	gfx:      [MAX_GFX]Graphics,
+}
+
+Actor :: struct {
+	using base: BaseEntity,
+	hp:         i32,
+	max_hp:     i32,
+	speed:      f32,
+}
+
+EntityVariant :: union {
+	Player,
+	Enemy,
+	GroundItem,
+	FX,
+}
+
+Entity :: struct {
+	handle: Handle,
+	v:      EntityVariant,
+}
+
+get_base :: proc(e: ^Entity) -> ^BaseEntity {
+	#partial switch &v in e.v {
+	case Player:
+		return cast(^BaseEntity)&v
+	case Enemy:
+		return cast(^BaseEntity)&v
+	case GroundItem:
+		return cast(^BaseEntity)&v
+	case FX:
+		return cast(^BaseEntity)&v
+	}
+	return nil
+}
+
+get_actor :: proc(e: ^Entity) -> ^Actor {
+	#partial switch &v in e.v {
+	case Player:
+		return &v.actor
+	case Enemy:
+		return &v.actor
+	}
+	return nil
+}
+
+get_player :: proc(state: ^GameState) -> (^Entity, ^Player) {
+	e := get_entity(state, state.player)
+	if e == nil do return nil, nil
+	p, ok := &e.v.(Player)
+	if !ok do return nil, nil
+	return e, p
+}

src/fx.odin

@@ -0,0 +1,32 @@
+package main
+
+
+FX :: struct {
+	using base: BaseEntity,
+	parent:     Handle,
+	lifetime:   f32,
+	permanent:  bool,
+}
+
+init_fx :: proc(state: ^GameState, fx: FX) -> Handle {
+	return spawn(state, Entity{v = fx})
+}
+
+fx_update :: proc(state: ^GameState, fx: ^FX, h: Handle, dt: f32) {
+	if fx.parent != {} {
+		if pe := get_entity(state, fx.parent); pe != nil {
+			fx.pos = get_base(pe).pos
+		} else {
+			fx.marked = true
+			return
+		}
+	}
+
+	if !fx.permanent {
+		if fx.lifetime > 0 {
+			fx.lifetime -= dt
+		} else {
+			fx.marked = true
+		}
+	}
+}

src/gfx.odin

@@ -1,6 +1,5 @@
 package main
 
-import hm "core:container/handle_map"
 import rl "vendor:raylib"
 
 Graphics :: union {
@@ -40,7 +39,6 @@ GfxCircleLines :: struct {
 }
 
 GfxTexture :: struct {
-	// TODO: Implement texture rendering
 }
 
 gfx_draw :: proc(pos: rl.Vector2, g: Graphics) {
@@ -55,54 +53,3 @@ gfx_draw :: proc(pos: rl.Vector2, g: Graphics) {
 		rl.DrawCircleLinesV(pos + v.pos, v.radius, v.color)
 	}
 }
-
-// ─── FX ───
-
-FX :: struct {
-	handle:    Handle,
-	parent:    Handle, // 0 = свободно плавает
-	pos:       rl.Vector2,
-	gfx:       [MAX_GFX]Graphics,
-	lifetime:  f32,
-	permanent: bool,
-	marked:    bool,
-}
-
-init_fx :: proc(state: ^GameState, fx: FX) -> Handle {
-	return hm.add(&state.fxs, fx)
-}
-
-fx_update :: proc(state: ^GameState, fx: ^FX, dt: f32) {
-	if fx.marked do return
-
-	// следуем за родителем, пока жив
-	if fx.parent != {} {
-		if e := get_entity(state, fx.parent); e != nil {
-			fx.pos = get_base(e).pos
-		} else {
-			fx.marked = true // родитель умер
-			return
-		}
-	}
-
-	if !fx.permanent {
-		if fx.lifetime > 0 {
-			fx.lifetime -= dt
-		} else {
-			fx.marked = true
-		}
-	}
-}
-
-fx_draw :: proc(fx: ^FX) {
-	for g in fx.gfx {
-		gfx_draw(fx.pos, g)
-	}
-}
-
-sys_fx_update :: proc(state: ^GameState, dt: f32) {
-	it := hm.iterator_make(&state.fxs)
-	for fx, _ in hm.iterate(&it) {
-		fx_update(state, fx, dt)
-	}
-}

src/item.odin

@@ -1,24 +1,22 @@
 package main
+import rl "vendor:raylib"
 
-// Пикап лута игроком — по коллизионным парам (как урон)
+GroundItem :: struct {
-sys_pickup :: proc(state: ^GameState) {
+	using base: BaseEntity,
-	_, p := get_player(state)
+	heal:       i32,
-	if p == nil do return
+}
 
-	for c in state.collisions {
+make_ground_item :: proc(pos: rl.Vector2) -> Entity {
-		other_h: Handle
+	return Entity{
-		if c.a == state.player {
+		v = GroundItem{
-			other_h = c.b
+			base = BaseEntity{
-		} else if c.b == state.player {
+				pos = pos, col_size = 10,
-			other_h = c.a
+				gfx = {0 = GfxCircle{pos = {}, radius = 6, color = {255, 220, 50, 255}}},
-		} else do continue
+			},
-
+			heal = 25,
-		e := get_entity(state, other_h)
+		},
-		if e == nil do continue
-		gi, ok := &e.v.(GroundItem)
-		if !ok || gi.marked do continue
-
-		p.hp = min(p.hp + gi.heal, p.max_hp)
-		gi.marked = true
 	}
 }
+
+item_update :: proc(state: ^GameState, i: ^GroundItem, h: Handle, dt: f32) {
+}

src/main.odin

@@ -2,12 +2,17 @@ package main
 
 import rl "vendor:raylib"
 
+SCREEN_W :: 1280
+SCREEN_H :: 720
+TARGET_FPS :: 60
+
+
 main :: proc() {
 	rl.InitWindow(SCREEN_W, SCREEN_H, "Iso Arena")
 	rl.SetTargetFPS(TARGET_FPS)
 	defer rl.CloseWindow()
 
-	state := GameState{
+	state := GameState {
 		camera = {zoom = 1.5, offset = {SCREEN_W / 2, SCREEN_H / 2}},
 	}
 	state.collisions = make([dynamic]CollisionPair)
@@ -21,18 +26,13 @@ main :: proc() {
 	for !rl.WindowShouldClose() {
 		dt := rl.GetFrameTime()
 
-		sys_update(&state, dt)       // вход игрока + ИИ врагов (диспатчер)
+		sys_input(&state, dt)
-		sys_move(&state, dt)         // движение всех
+		sys_update(&state, dt)
-		sys_collisions(&state)       // пары + резолв
+		sys_sweep(&state)
-		sys_damage(&state)           // дамаг игроку от врагов
-		sys_death(&state)            // враги умерли → лут
-		sys_pickup(&state)           // игрок подбирает лут
-		sys_fx_update(&state, dt)    // FX: таймеры + следование
-		sys_sweep(&state)            // удалить помеченное
 
 		if pe := get_entity(&state, state.player); pe != nil {
 			state.camera.target = get_base(pe).pos
 		}
-		sys_render(&state)
+		sys_draw(&state)
 	}
 }

src/map.odin

@@ -0,0 +1,48 @@
+package main
+
+import "core:fmt"
+import rl "vendor:raylib"
+
+TILE_W :: 64
+TILE_H :: 32
+MAP_SIZE :: 60
+
+Vector2I :: distinct [2]i32
+
+world_to_tile_V2I :: #force_inline proc(pos: rl.Vector2) -> Vector2I {
+	return Vector2I{i32((pos.x - pos.y) * TILE_W * 0.5), i32((pos.x + pos.y) * TILE_H * 0.5)}
+}
+
+world_to_tile :: #force_inline proc(pos: rl.Vector2) -> rl.Vector2 {
+	return rl.Vector2{(pos.x - pos.y) * TILE_W * 0.5, (pos.x + pos.y) * TILE_H * 0.5}
+}
+
+//TODO: return i32?
+depth_key :: #force_inline proc(pos: rl.Vector2) -> f32 {
+	return pos.x + pos.y
+}
+
+draw_tile :: #force_inline proc(wprldPos: rl.Vector2, color: rl.Color) {
+	tilePos := world_to_tile(wprldPos)
+	top := tilePos + rl.Vector2{0, -TILE_H * 0.5}
+	right := tilePos + rl.Vector2{TILE_W * 0.5, 0}
+	down := tilePos + rl.Vector2{0, TILE_H * 0.5}
+	left := tilePos + rl.Vector2{-TILE_W * 0.5, 0}
+
+	rl.DrawLineV(top, right, color)
+	rl.DrawLineV(right, down, color)
+	rl.DrawLineV(down, left, color)
+	rl.DrawLineV(left, top, color)
+}
+
+draw_grid :: #force_inline proc() {
+	middle := MAP_SIZE / 2
+	for x in 0 ..< MAP_SIZE {
+		for y in 0 ..< MAP_SIZE {
+			wx := f32(x - middle)
+			wy := f32(y - middle)
+			color := ((x + y) % 2 == 0) ? rl.Color{64, 64, 76, 255} : rl.Color{51, 51, 63, 255}
+			draw_tile(rl.Vector2{wx, wy}, color)
+		}
+	}
+}

src/player.odin

@@ -3,32 +3,80 @@ package main
 import hm "core:container/handle_map"
 import rl "vendor:raylib"
 
-// Вход и атака игрока — вызывается из диспатчера sys_update
+Player :: struct {
-player_update :: proc(state: ^GameState, p: ^Player, h: Handle, dt: f32) {
+	using actor:  Actor,
-	// движение
+	attack_range: f32,
-	dir: rl.Vector2
+	attack_dmg:   i32,
-	if rl.IsKeyDown(.W) || rl.IsKeyDown(.UP)    do dir.y -= 1
+	attack_cd:    f32,
-	if rl.IsKeyDown(.S) || rl.IsKeyDown(.DOWN)  do dir.y += 1
+	attack_timer: f32,
-	if rl.IsKeyDown(.A) || rl.IsKeyDown(.LEFT)  do dir.x -= 1
+	invuln_timer: f32,
-	if rl.IsKeyDown(.D) || rl.IsKeyDown(.RIGHT) do dir.x += 1
+}
-	set_vel(&p.base, dir, p.speed)
+
+PlayerInput :: struct {
+	move:   rl.Vector2,
+	attack: bool,
+}
+
+make_player :: proc() -> Entity {
+	return Entity {
+		v = Player {
+			actor = Actor {
+				base = BaseEntity {
+					pos = {400, 300},
+					col_size = 16,
+					gfx = {0 = GfxCircle{pos = {}, radius = 14, color = {80, 220, 100, 255}}},
+				},
+				hp = 100,
+				max_hp = 100,
+				speed = 220,
+			},
+			attack_range = 75,
+			attack_dmg = 35,
+			attack_cd = 0.3,
+		},
+	}
+}
+
+sys_input :: proc(state: ^GameState, dt: f32) {
+	input: PlayerInput
+
+	if rl.IsKeyDown(.W) || rl.IsKeyDown(.UP) do input.move.y -= 1
+	if rl.IsKeyDown(.S) || rl.IsKeyDown(.DOWN) do input.move.y += 1
+	if rl.IsKeyDown(.A) || rl.IsKeyDown(.LEFT) do input.move.x -= 1
+	if rl.IsKeyDown(.D) || rl.IsKeyDown(.RIGHT) do input.move.x += 1
+	input.attack = rl.IsKeyPressed(.SPACE)
+
+	player_input(state, input, dt)
+}
+
+player_input :: proc(state: ^GameState, input: PlayerInput, dt: f32) {
+	_, p := get_player(state)
+	if p == nil do return
+
+	p.vel = rl.Vector2Normalize(input.move) * p.speed
 
-	// атака
 	if p.attack_timer > 0 do p.attack_timer -= dt
-	if rl.IsKeyPressed(.SPACE) && p.attack_timer <= 0 {
+	if input.attack && p.attack_timer <= 0 {
 		p.attack_timer = p.attack_cd
 
-		// визуал атаки — кольцо
+		init_fx(
-		init_fx(state, FX{
+			state,
-			parent   = h,
+			FX {
+				base = BaseEntity {
 					gfx = {
-				0 = GfxRing{inner_radius = p.attack_range * 0.7, outer_radius = p.attack_range, color = {255, 255, 255, 40}},
+						0 = GfxRing {
+							inner_radius = p.attack_range * 0.7,
+							outer_radius = p.attack_range,
+							color = {255, 255, 255, 40},
+						},
 						1 = GfxCircleLines{radius = p.attack_range, color = {255, 255, 255, 80}},
 					},
+				},
+				parent = state.player,
 				lifetime = p.attack_cd,
-		})
+			},
+		)
 
-		// дамаг врагам в радиусе
 		it := hm.iterator_make(&state.entities)
 		for e, _ in hm.iterate(&it) {
 			#partial switch &v in e.v {
@@ -40,3 +88,7 @@ player_update :: proc(state: ^GameState, p: ^Player, h: Handle, dt: f32) {
 		}
 	}
 }
+
+player_update :: proc(state: ^GameState, p: ^Player, h: Handle, dt: f32) {
+	if p.invuln_timer > 0 do p.invuln_timer -= dt
+}

src/scene.odin

@@ -3,177 +3,30 @@ package main
 import hm "core:container/handle_map"
 import rl "vendor:raylib"
 
-SCREEN_W :: 1280
-SCREEN_H :: 720
-TARGET_FPS :: 60
 SQRT2_INV :: 0.7071067811865476
-MAX_GFX :: 2
 
-Handle :: hm.Handle32
+CollisionPair :: struct {
-
+	a: Handle,
-MAX_ENTITIES :: 1024
+	b: Handle,
-MAX_FX :: 256
-
-// ─── Общее — всё что есть у любой сущности ───
-
-BaseEntity :: struct {
-	pos:      rl.Vector2,
-	vel:      rl.Vector2,
-	col_size: f32,
-	marked:   bool,
-	gfx:      [MAX_GFX]Graphics,
 }
 
-// ─── Акторское — то что есть у живых ───
-
-Actor :: struct {
-	using base: BaseEntity,
-	hp:         i32,
-	max_hp:     i32,
-	speed:      f32,
-}
-
-// ─── Конкретные типы ───
-
-Player :: struct {
-	using actor:  Actor,
-	attack_range: f32,
-	attack_dmg:   i32,
-	attack_cd:    f32,
-	attack_timer: f32,
-	invuln_timer: f32,
-}
-
-Enemy :: struct {
-	using actor: Actor,
-	touch_dmg:   i32,
-}
-
-GroundItem :: struct {
-	using base: BaseEntity,
-	heal:       i32,
-}
-
-EntityVariant :: union { Player, Enemy, GroundItem }
-
-// ─── Контейнер для handle_map ───
-
-Entity :: struct {
-	handle: Handle,
-	v:      EntityVariant,
-}
-
-// ─── Состояние игры ───
-
 GameState :: struct {
 	player:     Handle,
 	camera:     rl.Camera2D,
 	entities:   hm.Static_Handle_Map(MAX_ENTITIES, Entity, Handle),
-	fxs:       hm.Static_Handle_Map(MAX_FX, FX, Handle),
 	collisions: [dynamic]CollisionPair,
 }
 
-// ─── Доступ ───
-
 get_entity :: proc(state: ^GameState, h: Handle) -> ^Entity {
 	e, ok := hm.get(&state.entities, h)
 	return e if ok else nil
 }
 
-// Общее из любой сущности (BaseEntity первым полем во всех вариантах)
-get_base :: proc(e: ^Entity) -> ^BaseEntity {
-	#partial switch &v in e.v {
-	case Player:
-		return cast(^BaseEntity)&v
-	case Enemy:
-		return cast(^BaseEntity)&v
-	case GroundItem:
-		return cast(^BaseEntity)&v
-	}
-	return nil
-}
-
-// Акторское (есть только у живых)
-get_actor :: proc(e: ^Entity) -> ^Actor {
-	#partial switch &v in e.v {
-	case Player:
-		return &v.actor
-	case Enemy:
-		return &v.actor
-	}
-	return nil
-}
-
-get_player :: proc(state: ^GameState) -> (^Entity, ^Player) {
-	e := get_entity(state, state.player)
-	if e == nil do return nil, nil
-	p, ok := &e.v.(Player)
-	if !ok do return nil, nil
-	return e, p
-}
-
-// ─── Фабрики ───
-
-make_player :: proc() -> Entity {
-	return Entity{
-		v = Player{
-			actor = Actor{
-				base = BaseEntity{
-					pos = {400, 300}, col_size = 16,
-					gfx = {0 = GfxCircle{pos = {}, radius = 14, color = {80, 220, 100, 255}}},
-				},
-				hp = 100, max_hp = 100, speed = 220,
-			},
-			attack_range = 75,
-			attack_dmg = 35,
-			attack_cd = 0.3,
-		},
-	}
-}
-
-make_enemy :: proc(pos: rl.Vector2) -> Entity {
-	return Entity{
-		v = Enemy{
-			actor = Actor{
-				base = BaseEntity{
-					pos = pos, col_size = 16,
-					gfx = {0 = GfxCircle{pos = {}, radius = 11, color = {220, 70, 70, 255}}},
-				},
-				hp = 40, max_hp = 40, speed = 55,
-			},
-			touch_dmg = 10,
-		},
-	}
-}
-
-make_ground_item :: proc(pos: rl.Vector2) -> Entity {
-	return Entity{
-		v = GroundItem{
-			base = BaseEntity{
-				pos = pos, col_size = 10,
-				gfx = {0 = GfxCircle{pos = {}, radius = 6, color = {255, 220, 50, 255}}},
-			},
-			heal = 25,
-		},
-	}
-}
 
 spawn :: proc(state: ^GameState, e: Entity) -> Handle {
 	return hm.add(&state.entities, e)
 }
 
-// ─── Хелперы ───
-
-set_vel :: proc(b: ^BaseEntity, dir: rl.Vector2, speed: f32) {
-	if rl.Vector2Length(dir) > 0 {
-		b.vel = rl.Vector2Normalize(dir) * speed
-	} else {
-		b.vel = {}
-	}
-}
-
-// ─── Коллизия ───
-
 entity_rect :: #force_inline proc(b: ^BaseEntity) -> rl.Rectangle {
 	return rl.Rectangle{b.pos.x - b.col_size / 2, b.pos.y - b.col_size / 2, b.col_size, b.col_size}
 }
@@ -200,8 +53,6 @@ resolve_aabb :: proc(a, b: ^BaseEntity) -> bool {
 	return true
 }
 
-// ─── Диспатчер: один свитч, типизированные функции ───
-
 sys_update :: proc(state: ^GameState, dt: f32) {
 	it := hm.iterator_make(&state.entities)
 	for e, h in hm.iterate(&it) {
@@ -211,32 +62,68 @@ sys_update :: proc(state: ^GameState, dt: f32) {
 		case Enemy:
 			enemy_update(state, &v, h, dt)
 		case GroundItem:
-			// пока статичный
+			item_update(state, &v, h, dt)
 		}
 	}
-}
 
-// ─── Общее движение ───
+	it2 := hm.iterator_make(&state.entities)
-
+	for e, _ in hm.iterate(&it2) {
-sys_move :: proc(state: ^GameState, dt: f32) {
-	it := hm.iterator_make(&state.entities)
-	for e, _ in hm.iterate(&it) {
 		b := get_base(e)
 		b.pos += b.vel * dt
 	}
+
+	it3 := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it3) {
+		#partial switch &v in e.v {
+		case FX:
+			fx_update(state, &v, h, dt)
+		}
+	}
+
+	resolve_collisions(state)
+
+	apply_collision_effects(state)
 }
 
-// ─── Коллизии ───
+sys_sweep :: proc(state: ^GameState) {
-
+	it := hm.iterator_make(&state.entities)
-CollisionPair :: struct {
+	for e, h in hm.iterate(&it) {
-	a: Handle,
+		if get_base(e).marked {
-	b: Handle,
+			hm.remove(&state.entities, h)
+		}
+	}
 }
 
-sys_collisions :: proc(state: ^GameState) {
+entity_draw :: proc(e: ^Entity) {
+	b := get_base(e)
+	for g in b.gfx {
+		gfx_draw(b.pos, g)
+	}
+}
+
+sys_draw :: proc(state: ^GameState) {
+	rl.BeginDrawing()
+	rl.ClearBackground({20, 20, 30, 255})
+	rl.BeginMode2D(state.camera)
+	{
+		draw_grid()
+		it := hm.iterator_make(&state.entities)
+		for e, _ in hm.iterate(&it) {
+			entity_draw(e)
+			if a := get_actor(e); a != nil {
+				ui_draw_world_hp_bar(get_base(e), a)
+			}
+		}
+	}
+	rl.EndMode2D()
+
+	ui_draw(state)
+	rl.EndDrawing()
+}
+
+resolve_collisions :: proc(state: ^GameState) {
 	clear(&state.collisions)
 
-	// собрать все живые handle'ы
 	hs: [MAX_ENTITIES]Handle
 	n := 0
 	it := hm.iterator_make(&state.entities)
@@ -245,7 +132,6 @@ sys_collisions :: proc(state: ^GameState) {
 		n += 1
 	}
 
-	// O(n²): резолвим пересечения и собираем пары
 	for i in 0 ..< n {
 		for j in i + 1 ..< n {
 			a := get_entity(state, hs[i])
@@ -257,14 +143,8 @@ sys_collisions :: proc(state: ^GameState) {
 	}
 }
 
-// Дамаг игроку от врагов по коллизионным парам
+apply_collision_effects :: proc(state: ^GameState) {
-sys_damage :: proc(state: ^GameState) {
 	_, p := get_player(state)
-	if p == nil do return
-	if p.invuln_timer > 0 {
-		p.invuln_timer -= rl.GetFrameTime()
-		return
-	}
 
 	for c in state.collisions {
 		other_h: Handle
@@ -276,64 +156,19 @@ sys_damage :: proc(state: ^GameState) {
 
 		e := get_entity(state, other_h)
 		if e == nil do continue
-		ev, ok := &e.v.(Enemy)
-		if !ok do continue
 
-		p.hp -= ev.touch_dmg
+		#partial switch &v in e.v {
+		case Enemy:
+			if p != nil && p.invuln_timer <= 0 {
+				p.hp -= v.touch_dmg
 				p.invuln_timer = 0.5
 				if p.hp <= 0 do p.hp = 0
-		break // один урон за кадр, дальше неуязвим
 			}
-}
+		case GroundItem:
-
+			if p != nil && !v.marked {
-// ─── Очистка помеченного ───
+				p.hp = min(p.hp + v.heal, p.max_hp)
-
+				v.marked = true
-sys_sweep :: proc(state: ^GameState) {
-	it := hm.iterator_make(&state.entities)
-	for e, h in hm.iterate(&it) {
-		if get_base(e).marked {
-			hm.remove(&state.entities, h)
 			}
 		}
-
-	it2 := hm.iterator_make(&state.fxs)
-	for fx, h in hm.iterate(&it2) {
-		if fx.marked {
-			hm.remove(&state.fxs, h)
-		}
 	}
 }
-
-// ─── Рендер ───
-
-entity_draw :: proc(e: ^Entity) {
-	b := get_base(e)
-	for g in b.gfx {
-		gfx_draw(b.pos, g)
-	}
-}
-
-sys_render :: proc(state: ^GameState) {
-	rl.BeginDrawing()
-	rl.ClearBackground({20, 20, 30, 255})
-	rl.BeginMode2D(state.camera)
-	{
-		it := hm.iterator_make(&state.entities)
-		for e, _ in hm.iterate(&it) {
-			entity_draw(e)
-			if a := get_actor(e); a != nil {
-				ui_draw_world_hp_bar(get_base(e), a)
-			}
-		}
-
-		it2 := hm.iterator_make(&state.fxs)
-		for fx, _ in hm.iterate(&it2) {
-			fx_draw(fx)
-		}
-	}
-	rl.EndMode2D()
-
-	ui_draw(state)
-
-	rl.EndDrawing()
-}

src/ui.odin

@@ -1,6 +1,6 @@
 package main
-
 import hm "core:container/handle_map"
+
 import rl "vendor:raylib"
 
 ui_draw_world_hp_bar :: proc(b: ^BaseEntity, actor: ^Actor) {

src2/attack.odin

@@ -0,0 +1,62 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+MAX_ATTACK_HITS :: 32
+
+Attack :: struct {
+	using base: BaseEntity,
+	parent:     Handle,
+	dmg:        i32,
+	radius:     f32,
+	lifetime:   f32,
+	hit:        [MAX_ATTACK_HITS]Handle,
+	hit_count:  u8,
+}
+
+init_attack :: proc(state: ^GameState, a: Attack) -> Handle {
+	return spawn(state, Entity{v = a})
+}
+
+attack_update :: proc(state: ^GameState, a: ^Attack, h: Handle, dt: f32) {
+	if a.parent != {} {
+		if pe := get_entity(state, a.parent); pe != nil {
+			a.pos = get_base(pe).pos
+		} else {
+			a.marked = true
+			return
+		}
+	}
+
+	it := hm.iterator_make(&state.entities)
+	for e, eh in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Enemy:
+			if v.hp <= 0 || v.marked do continue
+			if rl.Vector2Distance(a.pos, v.pos) <= a.radius && !attack_has_hit(a, eh) {
+				v.hp -= a.dmg
+				attack_add_hit(a, eh)
+			}
+		}
+	}
+
+	if a.lifetime > 0 {
+		a.lifetime -= dt
+	} else {
+		a.marked = true
+	}
+}
+
+attack_has_hit :: proc(a: ^Attack, h: Handle) -> bool {
+	for i in 0 ..< a.hit_count {
+		if a.hit[i] == h do return true
+	}
+	return false
+}
+
+attack_add_hit :: proc(a: ^Attack, h: Handle) {
+	if a.hit_count >= MAX_ATTACK_HITS do return
+	a.hit[a.hit_count] = h
+	a.hit_count += 1
+}

src2/enemy.odin

@@ -0,0 +1,38 @@
+package main
+import rl "vendor:raylib"
+
+Enemy :: struct {
+	using actor: Actor,
+	touch_dmg:   i32,
+}
+
+make_enemy :: proc(pos: rl.Vector2) -> Entity {
+	return Entity {
+		v = Enemy {
+			actor = Actor {
+				base = BaseEntity {
+					pos = pos,
+					col_size = 16,
+					gfx = {0 = GfxCircle{pos = {}, radius = 11, color = {220, 70, 70, 255}}},
+				},
+				hp = 40,
+				max_hp = 40,
+				speed = 55,
+			},
+			touch_dmg = 10,
+		},
+	}
+}
+
+enemy_update :: proc(state: ^GameState, e: ^Enemy, h: Handle, dt: f32) {
+	pe := get_entity(state, state.player)
+	if pe != nil {
+		dir := get_base(pe).pos - e.pos
+		e.vel = rl.Vector2Normalize(dir) * e.speed
+	}
+
+	if e.hp <= 0 && !e.marked {
+		e.marked = true
+		spawn(state, make_ground_item(e.pos))
+	}
+}

src2/entity.odin

@@ -0,0 +1,72 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+MAX_GFX :: 2
+
+Handle :: hm.Handle32
+
+MAX_ENTITIES :: 1024
+
+BaseEntity :: struct {
+	pos:      rl.Vector2,
+	vel:      rl.Vector2,
+	col_size: f32,
+	marked:   bool,
+	gfx:      [MAX_GFX]Graphics,
+}
+
+Actor :: struct {
+	using base: BaseEntity,
+	hp:         i32,
+	max_hp:     i32,
+	speed:      f32,
+}
+
+EntityVariant :: union {
+	Player,
+	Enemy,
+	GroundItem,
+	FX,
+	Attack,
+}
+
+Entity :: struct {
+	handle: Handle,
+	v:      EntityVariant,
+}
+
+get_base :: proc(e: ^Entity) -> ^BaseEntity {
+	#partial switch &v in e.v {
+	case Player:
+		return cast(^BaseEntity)&v
+	case Enemy:
+		return cast(^BaseEntity)&v
+	case GroundItem:
+		return cast(^BaseEntity)&v
+	case FX:
+		return cast(^BaseEntity)&v
+	case Attack:
+		return cast(^BaseEntity)&v
+	}
+	return nil
+}
+
+get_actor :: proc(e: ^Entity) -> ^Actor {
+	#partial switch &v in e.v {
+	case Player:
+		return &v.actor
+	case Enemy:
+		return &v.actor
+	}
+	return nil
+}
+
+get_player :: proc(state: ^GameState) -> (^Entity, ^Player) {
+	e := get_entity(state, state.player)
+	if e == nil do return nil, nil
+	p, ok := &e.v.(Player)
+	if !ok do return nil, nil
+	return e, p
+}

src2/fx.odin

@@ -0,0 +1,32 @@
+package main
+
+
+FX :: struct {
+	using base: BaseEntity,
+	parent:     Handle,
+	lifetime:   f32,
+	permanent:  bool,
+}
+
+init_fx :: proc(state: ^GameState, fx: FX) -> Handle {
+	return spawn(state, Entity{v = fx})
+}
+
+fx_update :: proc(state: ^GameState, fx: ^FX, h: Handle, dt: f32) {
+	if fx.parent != {} {
+		if pe := get_entity(state, fx.parent); pe != nil {
+			fx.pos = get_base(pe).pos
+		} else {
+			fx.marked = true
+			return
+		}
+	}
+
+	if !fx.permanent {
+		if fx.lifetime > 0 {
+			fx.lifetime -= dt
+		} else {
+			fx.marked = true
+		}
+	}
+}

src2/gfx.odin

@@ -0,0 +1,55 @@
+package main
+
+import rl "vendor:raylib"
+
+Graphics :: union {
+	GfxNone,
+	GfxCircle,
+	GfxRect,
+	GfxRing,
+	GfxCircleLines,
+	GfxTexture,
+}
+
+GfxNone :: struct {}
+
+GfxCircle :: struct {
+	pos:    rl.Vector2,
+	radius: f32,
+	color:  rl.Color,
+}
+
+GfxRect :: struct {
+	pos:   rl.Vector2,
+	size:  rl.Vector2,
+	color: rl.Color,
+}
+
+GfxRing :: struct {
+	pos:          rl.Vector2,
+	inner_radius: f32,
+	outer_radius: f32,
+	color:        rl.Color,
+}
+
+GfxCircleLines :: struct {
+	pos:    rl.Vector2,
+	radius: f32,
+	color:  rl.Color,
+}
+
+GfxTexture :: struct {
+}
+
+gfx_draw :: proc(pos: rl.Vector2, g: Graphics) {
+	#partial switch v in g {
+	case GfxCircle:
+		rl.DrawCircleV(pos + v.pos, v.radius, v.color)
+	case GfxRect:
+		rl.DrawRectangleV(pos - v.size / 2 + v.pos, v.size, v.color)
+	case GfxRing:
+		rl.DrawRing(pos + v.pos, v.inner_radius, v.outer_radius, 0, 360, 0, v.color)
+	case GfxCircleLines:
+		rl.DrawCircleLinesV(pos + v.pos, v.radius, v.color)
+	}
+}

src2/item.odin

@@ -0,0 +1,22 @@
+package main
+import rl "vendor:raylib"
+
+GroundItem :: struct {
+	using base: BaseEntity,
+	heal:       i32,
+}
+
+make_ground_item :: proc(pos: rl.Vector2) -> Entity {
+	return Entity{
+		v = GroundItem{
+			base = BaseEntity{
+				pos = pos, col_size = 10,
+				gfx = {0 = GfxCircle{pos = {}, radius = 6, color = {255, 220, 50, 255}}},
+			},
+			heal = 25,
+		},
+	}
+}
+
+item_update :: proc(state: ^GameState, i: ^GroundItem, h: Handle, dt: f32) {
+}

src2/main.odin

@@ -0,0 +1,48 @@
+package main
+
+import rl "vendor:raylib"
+
+SCREEN_W :: 1280
+SCREEN_H :: 720
+TARGET_FPS :: 60
+
+
+main :: proc() {
+	rl.InitWindow(SCREEN_W, SCREEN_H, "Iso Arena 3D")
+	rl.SetTargetFPS(TARGET_FPS)
+	defer rl.CloseWindow()
+
+	camera := rl.Camera3D {
+		position   = {0, 80, 80},
+		target     = {0, 0, 0},
+		up         = {0, 1, 0},
+		fovy       = 400,
+		projection = .ORTHOGRAPHIC,
+	}
+
+	state := GameState {
+		camera = camera,
+	}
+	state.collisions = make([dynamic]CollisionPair)
+	defer delete(state.collisions)
+
+	state.player = spawn(&state, make_player())
+	spawn(&state, make_enemy({200, 200}))
+	spawn(&state, make_enemy({-200, 200}))
+	spawn(&state, make_enemy({200, -200}))
+
+	for !rl.WindowShouldClose() {
+		dt := rl.GetFrameTime()
+
+		sys_input(&state, dt)
+		sys_update(&state, dt)
+		sys_sweep(&state)
+
+		if pe := get_entity(&state, state.player); pe != nil {
+			p := get_base(pe).pos
+			state.camera.target = {p.x, 0, p.y}
+			state.camera.position = state.camera.target + {600, 600, 600}
+		}
+		sys_draw(&state)
+	}
+}

src2/map.odin

@@ -0,0 +1,22 @@
+package main
+
+import rl "vendor:raylib"
+
+TILE_W :: 64
+MAP_SIZE :: 20
+
+depth_key :: #force_inline proc(pos: rl.Vector2) -> f32 {
+	return pos.x + pos.y
+}
+
+draw_grid_3d :: proc() {
+	middle := MAP_SIZE / 2
+	for x in 0 ..< MAP_SIZE {
+		for y in 0 ..< MAP_SIZE {
+			wx := f32(x - middle) * TILE_W
+			wy := f32(y - middle) * TILE_W
+			color := ((x + y) % 2 == 0) ? rl.Color{64, 64, 76, 255} : rl.Color{51, 51, 63, 255}
+			rl.DrawPlane({wx, 0, wy}, {TILE_W, TILE_W}, color)
+		}
+	}
+}

src2/player.odin

@@ -0,0 +1,85 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+Player :: struct {
+	using actor:  Actor,
+	attack_range: f32,
+	attack_dmg:   i32,
+	attack_cd:    f32,
+	attack_timer: f32,
+	invuln_timer: f32,
+}
+
+PlayerInput :: struct {
+	move:   rl.Vector2,
+	attack: bool,
+}
+
+make_player :: proc() -> Entity {
+	return Entity {
+		v = Player {
+			actor = Actor {
+				base = BaseEntity {
+					pos = {0, 0},
+					col_size = 16,
+					gfx = {0 = GfxCircle{pos = {}, radius = 14, color = {80, 220, 100, 255}}},
+				},
+				hp = 100,
+				max_hp = 100,
+				speed = 220,
+			},
+			attack_range = 75,
+			attack_dmg = 35,
+			attack_cd = 0.3,
+		},
+	}
+}
+
+sys_input :: proc(state: ^GameState, dt: f32) {
+	input: PlayerInput
+
+	if rl.IsKeyDown(.W) || rl.IsKeyDown(.UP) do input.move += {-1, -1}
+	if rl.IsKeyDown(.S) || rl.IsKeyDown(.DOWN) do input.move += {1, 1}
+	if rl.IsKeyDown(.A) || rl.IsKeyDown(.LEFT) do input.move += {-1, 1}
+	if rl.IsKeyDown(.D) || rl.IsKeyDown(.RIGHT) do input.move += {1, -1}
+	input.attack = rl.IsKeyPressed(.SPACE)
+
+	player_input(state, input, dt)
+}
+
+player_input :: proc(state: ^GameState, input: PlayerInput, dt: f32) {
+	_, p := get_player(state)
+	if p == nil do return
+
+	p.vel = rl.Vector2Normalize(input.move) * p.speed
+
+	if p.attack_timer > 0 do p.attack_timer -= dt
+	if input.attack && p.attack_timer <= 0 {
+		p.attack_timer = p.attack_cd
+
+		init_attack(
+			state,
+			Attack {
+				base = BaseEntity {
+					gfx = {
+						0 = GfxRing {
+							inner_radius = p.attack_range * 0.7,
+							outer_radius = p.attack_range,
+							color = {255, 255, 255, 40},
+						},
+					},
+				},
+				parent   = state.player,
+				dmg      = p.attack_dmg,
+				radius   = p.attack_range,
+				lifetime = p.attack_cd,
+			},
+		)
+	}
+}
+
+player_update :: proc(state: ^GameState, p: ^Player, h: Handle, dt: f32) {
+	if p.invuln_timer > 0 do p.invuln_timer -= dt
+}

src2/scene.odin

@@ -0,0 +1,202 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+SQRT2_INV :: 0.7071067811865476
+
+CollisionPair :: struct {
+	a: Handle,
+	b: Handle,
+}
+
+GameState :: struct {
+	player:     Handle,
+	camera:     rl.Camera3D,
+	entities:   hm.Static_Handle_Map(MAX_ENTITIES, Entity, Handle),
+	collisions: [dynamic]CollisionPair,
+}
+
+get_entity :: proc(state: ^GameState, h: Handle) -> ^Entity {
+	e, ok := hm.get(&state.entities, h)
+	return e if ok else nil
+}
+
+
+spawn :: proc(state: ^GameState, e: Entity) -> Handle {
+	return hm.add(&state.entities, e)
+}
+
+entity_rect :: #force_inline proc(b: ^BaseEntity) -> rl.Rectangle {
+	return rl.Rectangle{b.pos.x - b.col_size / 2, b.pos.y - b.col_size / 2, b.col_size, b.col_size}
+}
+
+check_col :: proc(a, b: ^BaseEntity) -> (overlap: rl.Rectangle, colliding: bool) {
+	c := rl.GetCollisionRec(entity_rect(a), entity_rect(b))
+	if c.width <= 0 || c.height <= 0 do return rl.Rectangle{}, false
+	return c, true
+}
+
+resolve_aabb :: proc(a, b: ^BaseEntity) -> bool {
+	c, ok := check_col(a, b)
+	if !ok do return false
+
+	if c.width < c.height {
+		sign: f32 = 1 if a.pos.x < b.pos.x else -1
+		a.pos.x -= sign * c.width * 0.5
+		b.pos.x += sign * c.width * 0.5
+	} else {
+		sign: f32 = 1 if a.pos.y < b.pos.y else -1
+		a.pos.y -= sign * c.height * 0.5
+		b.pos.y += sign * c.height * 0.5
+	}
+	return true
+}
+
+sys_update :: proc(state: ^GameState, dt: f32) {
+	it := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Player:
+			player_update(state, &v, h, dt)
+		case Enemy:
+			enemy_update(state, &v, h, dt)
+		case GroundItem:
+			item_update(state, &v, h, dt)
+		}
+	}
+
+	it2 := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it2) {
+		b := get_base(e)
+		b.pos += b.vel * dt
+	}
+
+	it3 := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it3) {
+		#partial switch &v in e.v {
+		case FX:
+			fx_update(state, &v, h, dt)
+		case Attack:
+			attack_update(state, &v, h, dt)
+		}
+	}
+
+	resolve_collisions(state)
+
+	apply_collision_effects(state)
+}
+
+sys_sweep :: proc(state: ^GameState) {
+	it := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it) {
+		if get_base(e).marked {
+			hm.remove(&state.entities, h)
+		}
+	}
+}
+
+entity_draw :: proc(state: ^GameState, e: ^Entity) {
+	b := get_base(e)
+	sp := rl.GetWorldToScreen({b.pos.x, 0, b.pos.y}, state.camera)
+	scale := SCREEN_H / state.camera.fovy
+
+	#partial switch v in b.gfx[0] {
+	case GfxCircle:
+		rl.DrawCircleV(sp, v.radius * scale, v.color)
+	case:
+	}
+}
+
+ground_effect_draw :: proc(state: ^GameState, e: ^Entity) {
+	b := get_base(e)
+
+	#partial switch v in b.gfx[0] {
+	case GfxRing:
+		rl.DrawCylinder({b.pos.x, 0.02, b.pos.y}, v.outer_radius, v.outer_radius, 0.04, 48, v.color)
+	case:
+	}
+}
+
+sys_draw :: proc(state: ^GameState) {
+	rl.BeginDrawing()
+	rl.ClearBackground({20, 20, 30, 255})
+
+	rl.BeginMode3D(state.camera)
+	draw_grid_3d()
+	it := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it) {
+		ground_effect_draw(state, e)
+	}
+	rl.EndMode3D()
+
+	scale := SCREEN_H / state.camera.fovy
+	it2 := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it2) {
+		entity_draw(state, e)
+		if a := get_actor(e); a != nil {
+			b := get_base(e)
+			sp := rl.GetWorldToScreen({b.pos.x, 0, b.pos.y}, state.camera)
+			hp_ratio := f32(a.hp) / f32(a.max_hp)
+			bar_w := b.col_size * 3 * scale
+			bar_pos := sp - rl.Vector2{bar_w / 2, b.col_size * 2 * scale + 12}
+			rl.DrawRectangleV(bar_pos, {bar_w, 5}, {60, 60, 60, 255})
+			rl.DrawRectangleV(bar_pos, {bar_w * hp_ratio, 5}, {220, 40, 40, 255})
+		}
+	}
+
+	ui_draw(state)
+	rl.EndDrawing()
+}
+
+resolve_collisions :: proc(state: ^GameState) {
+	clear(&state.collisions)
+
+	hs: [MAX_ENTITIES]Handle
+	n := 0
+	it := hm.iterator_make(&state.entities)
+	for _, h in hm.iterate(&it) {
+		hs[n] = h
+		n += 1
+	}
+
+	for i in 0 ..< n {
+		for j in i + 1 ..< n {
+			a := get_entity(state, hs[i])
+			b := get_entity(state, hs[j])
+			if resolve_aabb(get_base(a), get_base(b)) {
+				append(&state.collisions, CollisionPair{a = hs[i], b = hs[j]})
+			}
+		}
+	}
+}
+
+apply_collision_effects :: proc(state: ^GameState) {
+	_, p := get_player(state)
+
+	for c in state.collisions {
+		other_h: Handle
+		if c.a == state.player {
+			other_h = c.b
+		} else if c.b == state.player {
+			other_h = c.a
+		} else do continue
+
+		e := get_entity(state, other_h)
+		if e == nil do continue
+
+		#partial switch &v in e.v {
+		case Enemy:
+			if p != nil && p.invuln_timer <= 0 {
+				p.hp -= v.touch_dmg
+				p.invuln_timer = 0.5
+				if p.hp <= 0 do p.hp = 0
+			}
+		case GroundItem:
+			if p != nil && !v.marked {
+				p.hp = min(p.hp + v.heal, p.max_hp)
+				v.marked = true
+			}
+		}
+	}
+}

src2/ui.odin

@@ -0,0 +1,26 @@
+package main
+import hm "core:container/handle_map"
+
+import rl "vendor:raylib"
+
+ui_draw_world_hp_bar :: proc(b: ^BaseEntity, actor: ^Actor) {
+	hp_ratio := f32(actor.hp) / f32(actor.max_hp)
+	bar_w := b.col_size * 3
+	bar_pos := b.pos + rl.Vector2{-bar_w / 2, -b.col_size - 10}
+	rl.DrawRectangleV(bar_pos, {bar_w, 4}, {60, 60, 60, 255})
+	rl.DrawRectangleV(bar_pos, {bar_w * hp_ratio, 4}, {220, 40, 40, 255})
+}
+
+ui_draw :: proc(state: ^GameState) {
+	_, p := get_player(state)
+	hp: i32 = 0
+	max_hp: i32 = 1
+	if p != nil {
+		hp = p.hp
+		max_hp = p.max_hp
+	}
+
+	rl.DrawText(rl.TextFormat("HP: %d/%d", hp, max_hp), 12, 12, 20, rl.RAYWHITE)
+	rl.DrawText(rl.TextFormat("Entities: %d", hm.len(state.entities)), 12, 36, 16, {180, 180, 180, 255})
+	rl.DrawText("[SPACE] attack  [WASD] move", 12, SCREEN_H - 28, 14, {120, 120, 120, 255})
+}

src3/attack.odin

@@ -0,0 +1,79 @@
+package main
+
+import rand "core:math/rand"
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+MAX_ATTACK_HITS :: 32
+
+Attack :: struct {
+	using base: BaseEntity,
+	parent:     Handle,
+	dir:        rl.Vector2,
+	dmg:        i32,
+	crit:       f32,
+	radius:     f32,
+	arc:        f32,
+	lifetime:   f32,
+	color:      rl.Color,
+	hit:        [MAX_ATTACK_HITS]Handle,
+	hit_count:  u8,
+}
+
+init_attack :: proc(state: ^GameState, a: Attack) -> Handle {
+	return spawn(state, Entity{v = a})
+}
+
+attack_update :: proc(state: ^GameState, a: ^Attack, h: Handle, dt: f32) {
+	if a.parent != {} {
+		if pe := get_entity(state, a.parent); pe != nil {
+			a.pos = get_base(pe).pos
+		} else {
+			a.marked = true
+			return
+		}
+	}
+
+	it := hm.iterator_make(&state.entities)
+	for e, eh in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Enemy:
+			if v.hp <= 0 || v.marked do continue
+			if attack_has_hit(a, eh) do continue
+
+			to := v.pos - a.pos
+			dist := rl.Vector2Length(to)
+			if dist > a.radius do continue
+
+			// дуга: угол между dir и направлением на врага
+			angle := rl.Vector2Angle(a.dir, rl.Vector2Normalize(to))
+			if angle > a.arc * 0.5 do continue
+
+			dmg := a.dmg
+			crit_hit := rand.float32() < a.crit
+			if crit_hit do dmg *= 2
+
+			v.hp -= dmg
+			attack_add_hit(a, eh)
+		}
+	}
+
+	if a.lifetime > 0 {
+		a.lifetime -= dt
+	} else {
+		a.marked = true
+	}
+}
+
+attack_has_hit :: proc(a: ^Attack, h: Handle) -> bool {
+	for i in 0 ..< a.hit_count {
+		if a.hit[i] == h do return true
+	}
+	return false
+}
+
+attack_add_hit :: proc(a: ^Attack, h: Handle) {
+	if a.hit_count >= MAX_ATTACK_HITS do return
+	a.hit[a.hit_count] = h
+	a.hit_count += 1
+}

src3/enemy.odin

@@ -0,0 +1,71 @@
+package main
+
+import math "core:math"
+import rand "core:math/rand"
+import rl "vendor:raylib"
+
+EnemyKind :: enum {
+	Grunt,
+	Brute,
+	Scout,
+}
+
+Enemy :: struct {
+	using actor: Actor,
+	touch_dmg:  i32,
+	kind:       EnemyKind,
+	xp_reward:  i32,
+}
+
+make_enemy :: proc(pos: rl.Vector2, kind: EnemyKind) -> Entity {
+	e: Enemy
+	switch kind {
+	case .Grunt:
+		e = Enemy{actor = Actor{hp = 45, max_hp = 45, speed = 55}, touch_dmg = 8, kind = .Grunt, xp_reward = 12}
+		e.base.gfx = {0 = GfxCircle{pos = {}, radius = 11, color = {220, 80, 80, 255}}}
+	case .Brute:
+		e = Enemy{actor = Actor{hp = 140, max_hp = 140, speed = 32}, touch_dmg = 20, kind = .Brute, xp_reward = 30}
+		e.base.gfx = {0 = GfxCircle{pos = {}, radius = 17, color = {160, 60, 220, 255}}}
+	case .Scout:
+		e = Enemy{actor = Actor{hp = 25, max_hp = 25, speed = 120}, touch_dmg = 5, kind = .Scout, xp_reward = 8}
+		e.base.gfx = {0 = GfxCircle{pos = {}, radius = 8, color = {240, 180, 60, 255}}}
+	}
+	e.base.pos = pos
+	e.base.col_size = 16
+	return Entity{v = e}
+}
+
+enemy_update :: proc(state: ^GameState, e: ^Enemy, h: Handle, dt: f32) {
+	pe := get_entity(state, state.player)
+	if pe != nil {
+		dir := get_base(pe).pos - e.pos
+		e.vel = rl.Vector2Normalize(dir) * e.speed
+	}
+
+	if e.hp <= 0 && !e.marked {
+		e.marked = true
+		enemy_give_rewards(e, state)
+	}
+}
+
+enemy_give_rewards :: proc(e: ^Enemy, state: ^GameState) {
+	_, p := get_player(state)
+	if p == nil do return
+
+	p.xp += e.xp_reward
+	add_log(state, "+%d XP", e.xp_reward)
+	check_level_up(state, p)
+
+	if rand.int_max(100) < 60 {
+		item := random_item(p.level)
+		spawn(state, make_ground_item(e.pos, item))
+		add_log(state, "Dropped: %s lvl %d", item.name, item.level)
+	}
+
+	if rand.int_max(100) < 45 {
+		ang := rand.float32() * 6.28
+		dist := 500 + rand.float32() * 300
+		pos := p.pos + rl.Vector2{math.cos_f32(ang), math.sin_f32(ang)} * dist
+		spawn(state, make_enemy(pos, EnemyKind(rand.int_max(3))))
+	}
+}

src3/entity.odin

@@ -0,0 +1,72 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+MAX_GFX :: 2
+
+Handle :: hm.Handle32
+
+MAX_ENTITIES :: 1024
+
+BaseEntity :: struct {
+	pos:      rl.Vector2,
+	vel:      rl.Vector2,
+	col_size: f32,
+	marked:   bool,
+	gfx:      [MAX_GFX]Graphics,
+}
+
+Actor :: struct {
+	using base: BaseEntity,
+	hp:         i32,
+	max_hp:     i32,
+	speed:      f32,
+}
+
+EntityVariant :: union {
+	Player,
+	Enemy,
+	GroundItem,
+	FX,
+	Attack,
+}
+
+Entity :: struct {
+	handle: Handle,
+	v:      EntityVariant,
+}
+
+get_base :: proc(e: ^Entity) -> ^BaseEntity {
+	#partial switch &v in e.v {
+	case Player:
+		return cast(^BaseEntity)&v
+	case Enemy:
+		return cast(^BaseEntity)&v
+	case GroundItem:
+		return cast(^BaseEntity)&v
+	case FX:
+		return cast(^BaseEntity)&v
+	case Attack:
+		return cast(^BaseEntity)&v
+	}
+	return nil
+}
+
+get_actor :: proc(e: ^Entity) -> ^Actor {
+	#partial switch &v in e.v {
+	case Player:
+		return &v.actor
+	case Enemy:
+		return &v.actor
+	}
+	return nil
+}
+
+get_player :: proc(state: ^GameState) -> (^Entity, ^Player) {
+	e := get_entity(state, state.player)
+	if e == nil do return nil, nil
+	p, ok := &e.v.(Player)
+	if !ok do return nil, nil
+	return e, p
+}

src3/fx.odin

@@ -0,0 +1,32 @@
+package main
+
+
+FX :: struct {
+	using base: BaseEntity,
+	parent:     Handle,
+	lifetime:   f32,
+	permanent:  bool,
+}
+
+init_fx :: proc(state: ^GameState, fx: FX) -> Handle {
+	return spawn(state, Entity{v = fx})
+}
+
+fx_update :: proc(state: ^GameState, fx: ^FX, h: Handle, dt: f32) {
+	if fx.parent != {} {
+		if pe := get_entity(state, fx.parent); pe != nil {
+			fx.pos = get_base(pe).pos
+		} else {
+			fx.marked = true
+			return
+		}
+	}
+
+	if !fx.permanent {
+		if fx.lifetime > 0 {
+			fx.lifetime -= dt
+		} else {
+			fx.marked = true
+		}
+	}
+}

src3/gfx.odin

@@ -0,0 +1,55 @@
+package main
+
+import rl "vendor:raylib"
+
+Graphics :: union {
+	GfxNone,
+	GfxCircle,
+	GfxRect,
+	GfxRing,
+	GfxCircleLines,
+	GfxTexture,
+}
+
+GfxNone :: struct {}
+
+GfxCircle :: struct {
+	pos:    rl.Vector2,
+	radius: f32,
+	color:  rl.Color,
+}
+
+GfxRect :: struct {
+	pos:   rl.Vector2,
+	size:  rl.Vector2,
+	color: rl.Color,
+}
+
+GfxRing :: struct {
+	pos:          rl.Vector2,
+	inner_radius: f32,
+	outer_radius: f32,
+	color:        rl.Color,
+}
+
+GfxCircleLines :: struct {
+	pos:    rl.Vector2,
+	radius: f32,
+	color:  rl.Color,
+}
+
+GfxTexture :: struct {
+}
+
+gfx_draw :: proc(pos: rl.Vector2, g: Graphics) {
+	#partial switch v in g {
+	case GfxCircle:
+		rl.DrawCircleV(pos + v.pos, v.radius, v.color)
+	case GfxRect:
+		rl.DrawRectangleV(pos - v.size / 2 + v.pos, v.size, v.color)
+	case GfxRing:
+		rl.DrawRing(pos + v.pos, v.inner_radius, v.outer_radius, 0, 360, 0, v.color)
+	case GfxCircleLines:
+		rl.DrawCircleLinesV(pos + v.pos, v.radius, v.color)
+	}
+}

src3/item.odin

@@ -0,0 +1,107 @@
+package main
+
+import rand "core:math/rand"
+import rl "vendor:raylib"
+
+INV_SIZE :: 16
+
+ItemKind :: enum {
+	None,
+	Weapon,
+	Armor,
+	Amulet,
+	Potion,
+}
+
+Item :: struct {
+	kind:     ItemKind,
+	name:     string,
+	level:    i32,
+	dmg:      i32,
+	crit:     f32,
+	atk_spd:  f32,
+	armor:    i32,
+	hp_bonus: i32,
+	heal:     i32,
+}
+
+GroundItem :: struct {
+	using base: BaseEntity,
+	item:       Item,
+}
+
+item_color :: proc(kind: ItemKind) -> rl.Color {
+	#partial switch kind {
+	case .Weapon:
+		return {200, 120, 60, 255}
+	case .Armor:
+		return {80, 140, 220, 255}
+	case .Amulet:
+		return {180, 100, 220, 255}
+	case .Potion:
+		return {80, 220, 80, 255}
+	case .None:
+		return {120, 120, 120, 255}
+	}
+	return {120, 120, 120, 255}
+}
+
+item_kind_name :: proc(kind: ItemKind) -> string {
+	#partial switch kind {
+	case .Weapon:
+		return "Sword"
+	case .Armor:
+		return "Armor"
+	case .Amulet:
+		return "Amulet"
+	case .Potion:
+		return "Potion"
+	case .None:
+		return "Empty"
+	}
+	return "Empty"
+}
+
+make_ground_item :: proc(pos: rl.Vector2, item: Item) -> Entity {
+	return Entity {
+		v = GroundItem {
+			base = BaseEntity {
+				pos = pos,
+				col_size = 12,
+				gfx = {0 = GfxCircle{pos = {}, radius = 7, color = item_color(item.kind)}},
+			},
+			item = item,
+		},
+	}
+}
+
+random_item :: proc(level: i32) -> Item {
+	kind := ItemKind(rand.int_max(4) + 1)
+	item := Item {
+		kind  = kind,
+		name  = item_kind_name(kind),
+		level = level,
+	}
+
+	switch kind {
+	case .Weapon:
+		item.dmg = 6 + level * 3 + i32(rand.int_max(6))
+		item.crit = 0.05 + f32(rand.int_max(15)) * 0.01
+		item.atk_spd = f32(rand.int_max(20)) * 0.01
+	case .Armor:
+		item.armor = 3 + level * 2 + i32(rand.int_max(4))
+		item.hp_bonus = 10 + level * 4 + i32(rand.int_max(10))
+	case .Amulet:
+		item.crit = 0.03 + f32(rand.int_max(12)) * 0.01
+		item.hp_bonus = 5 + level * 2 + i32(rand.int_max(8))
+		item.atk_spd = f32(rand.int_max(15)) * 0.01
+	case .Potion:
+		item.heal = 30 + level * 8 + i32(rand.int_max(15))
+	case .None:
+		{}
+	}
+	return item
+}
+
+item_update :: proc(state: ^GameState, i: ^GroundItem, h: Handle, dt: f32) {
+}

src3/main.odin

@@ -0,0 +1,52 @@
+package main
+
+import rl "vendor:raylib"
+
+SCREEN_W :: 1280
+SCREEN_H :: 720
+TARGET_FPS :: 60
+
+main :: proc() {
+	rl.InitWindow(SCREEN_W, SCREEN_H, "ARPG Demo")
+	rl.SetTargetFPS(TARGET_FPS)
+	defer rl.CloseWindow()
+
+	camera := rl.Camera3D{
+		position   = {0, 80, 80},
+		target     = {0, 0, 0},
+		up         = {0, 1, 0},
+		fovy       = 900,
+		projection = .ORTHOGRAPHIC,
+	}
+
+	state := new(GameState)
+	state.camera = camera
+	state.collisions = make([dynamic]CollisionPair)
+	defer delete(state.collisions)
+
+	state.player = spawn(state, make_player())
+
+	spawn(state, make_enemy({400, 300}, .Brute))
+	spawn(state, make_enemy({-400, 200}, .Scout))
+	spawn(state, make_enemy({300, -350}, .Grunt))
+	spawn(state, make_enemy({-300, -300}, .Scout))
+	spawn(state, make_enemy({100, 400}, .Grunt))
+	spawn(state, make_enemy({-150, 350}, .Grunt))
+	spawn(state, make_enemy({450, -150}, .Brute))
+	spawn(state, make_enemy({-450, 100}, .Scout))
+
+	for !rl.WindowShouldClose() {
+		dt := rl.GetFrameTime()
+
+		sys_input(state, dt)
+		sys_update(state, dt)
+		sys_sweep(state)
+
+		if pe := get_entity(state, state.player); pe != nil {
+			p := get_base(pe).pos
+			state.camera.target = {p.x, 0, p.y}
+			state.camera.position = state.camera.target + {600, 600, 600}
+		}
+		sys_draw(state)
+	}
+}

src3/map.odin

@@ -0,0 +1,22 @@
+package main
+
+import rl "vendor:raylib"
+
+TILE_W :: 64
+MAP_SIZE :: 20
+
+depth_key :: #force_inline proc(pos: rl.Vector2) -> f32 {
+	return pos.x + pos.y
+}
+
+draw_grid_3d :: proc() {
+	middle := MAP_SIZE / 2
+	for x in 0 ..< MAP_SIZE {
+		for y in 0 ..< MAP_SIZE {
+			wx := f32(x - middle) * TILE_W
+			wy := f32(y - middle) * TILE_W
+			color := ((x + y) % 2 == 0) ? rl.Color{64, 64, 76, 255} : rl.Color{51, 51, 63, 255}
+			rl.DrawPlane({wx, 0, wy}, {TILE_W, TILE_W}, color)
+		}
+	}
+}

src3/player.odin

@@ -0,0 +1,224 @@
+package main
+
+import rl "vendor:raylib"
+
+SKILL_COUNT :: 3
+
+SkillKind :: enum {
+	Dash,
+	Spin,
+	Heal,
+}
+
+Skill :: struct {
+	kind:  SkillKind,
+	cd:    f32,
+	timer: f32,
+}
+
+Equipment :: struct {
+	weapon: Item,
+	armor:  Item,
+	amulet: Item,
+}
+
+Player :: struct {
+	using actor:   Actor,
+	level:         i32,
+	xp:            i32,
+	xp_next:       i32,
+	base_dmg:      i32,
+	base_crit:     f32,
+	base_atk_cd:   f32,
+	base_max_hp:   i32,
+	equip:         Equipment,
+	inventory:     [INV_SIZE]Item,
+	inv_count:     i32,
+	selected_slot: i32,
+	skills:        [SKILL_COUNT]Skill,
+	aim:           rl.Vector2,
+	attack_range:  f32,
+	attack_timer:  f32,
+	invuln_timer:  f32,
+	dash_timer:    f32,
+}
+
+make_player :: proc() -> Entity {
+	p := Player {
+		level       = 1,
+		xp          = 0,
+		xp_next     = 50,
+		base_dmg    = 10,
+		base_crit   = 0.1,
+		base_atk_cd = 0.35,
+		base_max_hp = 100,
+		attack_range = 90,
+		selected_slot = -1,
+		skills = {
+			0 = Skill{kind = .Dash, cd = 2.0},
+			1 = Skill{kind = .Spin, cd = 4.0},
+			2 = Skill{kind = .Heal, cd = 6.0},
+		},
+	}
+	p.base.pos = {0, 0}
+	p.base.col_size = 16
+	p.base.gfx = {0 = GfxCircle{pos = {}, radius = 14, color = {80, 220, 100, 255}}}
+	p.hp = p.base_max_hp
+	p.max_hp = p.base_max_hp
+	p.speed = 220
+	return Entity{v = p}
+}
+
+// ─── Итоговые статы из экипировки ───
+
+player_total_dmg :: proc(p: ^Player) -> i32 {
+	dmg := p.base_dmg
+	if p.equip.weapon.kind != .None do dmg += p.equip.weapon.dmg
+	return dmg
+}
+
+player_crit :: proc(p: ^Player) -> f32 {
+	crit := p.base_crit
+	if p.equip.weapon.kind != .None do crit += p.equip.weapon.crit
+	if p.equip.amulet.kind != .None do crit += p.equip.amulet.crit
+	return min(crit, 0.8)
+}
+
+player_atk_cd :: proc(p: ^Player) -> f32 {
+	bonus: f32 = 0
+	if p.equip.weapon.kind != .None do bonus += p.equip.weapon.atk_spd
+	if p.equip.amulet.kind != .None do bonus += p.equip.amulet.atk_spd
+	return max(p.base_atk_cd * (1 - bonus), 0.1)
+}
+
+player_max_hp :: proc(p: ^Player) -> i32 {
+	hp := p.base_max_hp
+	if p.equip.armor.kind != .None do hp += p.equip.armor.hp_bonus
+	if p.equip.amulet.kind != .None do hp += p.equip.amulet.hp_bonus
+	return hp
+}
+
+recalc_stats :: proc(p: ^Player) {
+	p.max_hp = player_max_hp(p)
+	if p.hp > p.max_hp do p.hp = p.max_hp
+}
+
+// ─── Экипировка / использование ───
+
+equip_item :: proc(state: ^GameState, p: ^Player, item: Item) {
+	switch item.kind {
+	case .Weapon:
+		if p.equip.weapon.kind != .None {
+			add_log(state, "Dropped %s", p.equip.weapon.name)
+		}
+		p.equip.weapon = item
+	case .Armor:
+		if p.equip.armor.kind != .None {
+			add_log(state, "Dropped %s", p.equip.armor.name)
+		}
+		p.equip.armor = item
+	case .Amulet:
+		if p.equip.amulet.kind != .None {
+			add_log(state, "Dropped %s", p.equip.amulet.name)
+		}
+		p.equip.amulet = item
+	case .Potion:
+		p.hp = min(p.hp + item.heal, player_max_hp(p))
+		add_log(state, "Drank potion +%d HP", item.heal)
+		return
+	case .None:
+		return
+	}
+	recalc_stats(p)
+	add_log(state, "Equipped: %s", item.name)
+}
+
+// ─── Уровни ───
+
+check_level_up :: proc(state: ^GameState, p: ^Player) {
+	for p.xp >= p.xp_next {
+		p.xp -= p.xp_next
+		p.level += 1
+		p.xp_next = i32(f32(p.xp_next) * 1.4)
+		p.base_dmg += 2
+		p.base_max_hp += 12
+		p.hp = min(p.hp + 20, player_max_hp(p))
+		recalc_stats(p)
+		add_log(state, "LEVEL %d! +dmg +HP", p.level)
+	}
+}
+
+// ─── Ввод ───
+
+sys_input :: proc(state: ^GameState, dt: f32) {
+	_, p := get_player(state)
+	if p == nil do return
+
+	// направление к мыши (по земле)
+	ray := rl.GetScreenToWorldRay(rl.GetMousePosition(), state.camera)
+	if ray.direction.y != 0 {
+		t := -ray.position.y / ray.direction.y
+		hit := ray.position + ray.direction * t
+		p.aim = rl.Vector2Normalize({hit.x - p.pos.x, hit.z - p.pos.y})
+	}
+
+	// движение (45° поворот под изометрию)
+	move: rl.Vector2
+	if rl.IsKeyDown(.W) || rl.IsKeyDown(.UP)    do move += {-1, -1}
+	if rl.IsKeyDown(.S) || rl.IsKeyDown(.DOWN)  do move += {1, 1}
+	if rl.IsKeyDown(.A) || rl.IsKeyDown(.LEFT)  do move += {-1, 1}
+	if rl.IsKeyDown(.D) || rl.IsKeyDown(.RIGHT) do move += {1, -1}
+
+	if p.dash_timer > 0 {
+		p.dash_timer -= dt
+	} else {
+		p.vel = rl.Vector2Normalize(move) * p.speed
+	}
+
+	// инвентарь: клик по слоту (не атакуем при клике по UI)
+	if rl.IsMouseButtonPressed(.LEFT) {
+		if slot := ui_inventory_slot_at(rl.GetMousePosition()); slot >= 0 {
+			if slot < int(p.inv_count) {
+				item := p.inventory[slot]
+				equip_item(state, p, item)
+				for i in slot ..< int(p.inv_count) - 1 {
+					p.inventory[i] = p.inventory[i + 1]
+				}
+				p.inventory[int(p.inv_count) - 1] = Item{}
+				p.inv_count -= 1
+			}
+			return
+		}
+	}
+
+	// атака ЛКМ — сектор к мыши
+	if p.attack_timer > 0 do p.attack_timer -= dt
+	if rl.IsMouseButtonPressed(.LEFT) && p.attack_timer <= 0 {
+		p.attack_timer = player_atk_cd(p)
+		init_attack(state, Attack{
+			parent   = state.player,
+			dir      = p.aim,
+			dmg      = player_total_dmg(p),
+			crit     = player_crit(p),
+			radius   = p.attack_range,
+			arc      = 1.3,
+			lifetime = player_atk_cd(p),
+			color    = {255, 255, 255, 60},
+		})
+	}
+
+	// навыки
+	if rl.IsKeyPressed(.Q) do cast_skill(state, p, .Dash)
+	if rl.IsKeyPressed(.W) do cast_skill(state, p, .Spin)
+	if rl.IsKeyPressed(.E) do cast_skill(state, p, .Heal)
+}
+
+// ─── Тик ───
+
+player_update :: proc(state: ^GameState, p: ^Player, h: Handle, dt: f32) {
+	if p.invuln_timer > 0 do p.invuln_timer -= dt
+
+	for &s in p.skills {
+		if s.timer > 0 do s.timer -= dt
+	}
+}

src3/scene.odin

@@ -0,0 +1,255 @@
+package main
+
+import "core:fmt"
+import math "core:math"
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+SQRT2_INV :: 0.7071067811865476
+
+LOG_SIZE :: 8
+
+CollisionPair :: struct {
+	a: Handle,
+	b: Handle,
+}
+
+GameState :: struct {
+	player:     Handle,
+	camera:     rl.Camera3D,
+	entities:   hm.Static_Handle_Map(MAX_ENTITIES, Entity, Handle),
+	collisions: [dynamic]CollisionPair,
+	log:        [LOG_SIZE]string,
+	log_count:  i32,
+	kills:      i32,
+}
+
+get_entity :: proc(state: ^GameState, h: Handle) -> ^Entity {
+	e, ok := hm.get(&state.entities, h)
+	return e if ok else nil
+}
+
+spawn :: proc(state: ^GameState, e: Entity) -> Handle {
+	return hm.add(&state.entities, e)
+}
+
+add_log :: proc(state: ^GameState, format: string, args: ..any) {
+	msg := fmt.tprintf(format, ..args)
+	if state.log_count >= LOG_SIZE {
+		for i in 0 ..< LOG_SIZE - 1 {
+			state.log[i] = state.log[i + 1]
+		}
+		state.log[LOG_SIZE - 1] = msg
+	} else {
+		state.log[state.log_count] = msg
+		state.log_count += 1
+	}
+}
+
+entity_rect :: #force_inline proc(b: ^BaseEntity) -> rl.Rectangle {
+	return rl.Rectangle{b.pos.x - b.col_size / 2, b.pos.y - b.col_size / 2, b.col_size, b.col_size}
+}
+
+check_col :: proc(a, b: ^BaseEntity) -> (overlap: rl.Rectangle, colliding: bool) {
+	c := rl.GetCollisionRec(entity_rect(a), entity_rect(b))
+	if c.width <= 0 || c.height <= 0 do return rl.Rectangle{}, false
+	return c, true
+}
+
+resolve_aabb :: proc(a, b: ^BaseEntity) -> bool {
+	c, ok := check_col(a, b)
+	if !ok do return false
+
+	if c.width < c.height {
+		sign: f32 = 1 if a.pos.x < b.pos.x else -1
+		a.pos.x -= sign * c.width * 0.5
+		b.pos.x += sign * c.width * 0.5
+	} else {
+		sign: f32 = 1 if a.pos.y < b.pos.y else -1
+		a.pos.y -= sign * c.height * 0.5
+		b.pos.y += sign * c.height * 0.5
+	}
+	return true
+}
+
+sys_update :: proc(state: ^GameState, dt: f32) {
+	it := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Player:
+			player_update(state, &v, h, dt)
+		case Enemy:
+			enemy_update(state, &v, h, dt)
+		case GroundItem:
+			item_update(state, &v, h, dt)
+		}
+	}
+
+	it2 := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it2) {
+		b := get_base(e)
+		b.pos += b.vel * dt
+	}
+
+	it3 := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it3) {
+		#partial switch &v in e.v {
+		case FX:
+			fx_update(state, &v, h, dt)
+		case Attack:
+			attack_update(state, &v, h, dt)
+		}
+	}
+
+	resolve_collisions(state)
+
+	apply_collision_effects(state)
+}
+
+sys_sweep :: proc(state: ^GameState) {
+	it := hm.iterator_make(&state.entities)
+	for e, h in hm.iterate(&it) {
+		if get_base(e).marked {
+			hm.remove(&state.entities, h)
+		}
+	}
+}
+
+entity_draw :: proc(state: ^GameState, e: ^Entity) {
+	b := get_base(e)
+	sp := rl.GetWorldToScreen({b.pos.x, 0, b.pos.y}, state.camera)
+	scale := SCREEN_H / state.camera.fovy
+
+	#partial switch v in b.gfx[0] {
+	case GfxCircle:
+		rl.DrawCircleV(sp, v.radius * scale, v.color)
+	case:
+	}
+}
+
+ground_effect_draw :: proc(state: ^GameState, e: ^Entity) {
+	b := get_base(e)
+
+	#partial switch v in e.v {
+	case Attack:
+		draw_arc_sector(b.pos, v.dir, v.radius, v.arc, v.color)
+	case GroundItem:
+		rl.DrawCylinder({b.pos.x, 0.02, b.pos.y}, 8, 8, 0.03, 24, {255, 255, 255, 30})
+	case:
+	}
+}
+
+draw_arc_sector :: proc(pos: rl.Vector2, dir: rl.Vector2, radius: f32, arc: f32, color: rl.Color) {
+	SEGMENTS :: 24
+	base := math.atan2_f32(dir.y, dir.x)
+	start := base - arc * 0.5
+
+	for i in 0 ..< SEGMENTS {
+		a1 := start + arc * f32(i) / f32(SEGMENTS)
+		a2 := start + arc * f32(i + 1) / f32(SEGMENTS)
+		p1 := pos + rl.Vector2{math.cos_f32(a1), math.sin_f32(a1)} * radius
+		p2 := pos + rl.Vector2{math.cos_f32(a2), math.sin_f32(a2)} * radius
+		rl.DrawTriangle3D(
+			{pos.x, 0.03, pos.y},
+			{p1.x, 0.03, p1.y},
+			{p2.x, 0.03, p2.y},
+			color,
+		)
+	}
+}
+
+sys_draw :: proc(state: ^GameState) {
+	rl.BeginDrawing()
+	rl.ClearBackground({20, 20, 30, 255})
+
+	rl.BeginMode3D(state.camera)
+	draw_grid_3d()
+
+	if ray := rl.GetScreenToWorldRay(rl.GetMousePosition(), state.camera); ray.direction.y != 0 {
+		t := -ray.position.y / ray.direction.y
+		hit := ray.position + ray.direction * t
+		rl.DrawCylinder({hit.x, 0.02, hit.z}, 4, 4, 0.02, 16, {255, 255, 255, 90})
+	}
+
+	it := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it) {
+		ground_effect_draw(state, e)
+	}
+	rl.EndMode3D()
+
+	scale := SCREEN_H / state.camera.fovy
+	it2 := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it2) {
+		entity_draw(state, e)
+		if a := get_actor(e); a != nil {
+			b := get_base(e)
+			sp := rl.GetWorldToScreen({b.pos.x, 0, b.pos.y}, state.camera)
+			hp_ratio := f32(a.hp) / f32(a.max_hp)
+			bar_w := b.col_size * 3 * scale
+			bar_pos := sp - rl.Vector2{bar_w / 2, b.col_size * 2 * scale + 12}
+			rl.DrawRectangleV(bar_pos, {bar_w, 5}, {60, 60, 60, 255})
+			rl.DrawRectangleV(bar_pos, {bar_w * hp_ratio, 5}, {220, 40, 40, 255})
+		}
+	}
+
+	ui_draw(state)
+	rl.EndDrawing()
+}
+
+resolve_collisions :: proc(state: ^GameState) {
+	clear(&state.collisions)
+
+	hs: [MAX_ENTITIES]Handle
+	n := 0
+	it := hm.iterator_make(&state.entities)
+	for _, h in hm.iterate(&it) {
+		hs[n] = h
+		n += 1
+	}
+
+	for i in 0 ..< n {
+		for j in i + 1 ..< n {
+			a := get_entity(state, hs[i])
+			b := get_entity(state, hs[j])
+			if resolve_aabb(get_base(a), get_base(b)) {
+				append(&state.collisions, CollisionPair{a = hs[i], b = hs[j]})
+			}
+		}
+	}
+}
+
+apply_collision_effects :: proc(state: ^GameState) {
+	_, p := get_player(state)
+
+	for c in state.collisions {
+		other_h: Handle
+		if c.a == state.player {
+			other_h = c.b
+		} else if c.b == state.player {
+			other_h = c.a
+		} else do continue
+
+		e := get_entity(state, other_h)
+		if e == nil do continue
+
+		#partial switch &v in e.v {
+		case Enemy:
+			if p != nil && p.invuln_timer <= 0 {
+				dmg := v.touch_dmg
+				armor: i32 = 0
+				if p.equip.armor.kind != .None do armor = p.equip.armor.armor
+				dmg = max(dmg - armor / 2, 1)
+				p.hp -= dmg
+				p.invuln_timer = 0.5
+				if p.hp <= 0 do p.hp = 0
+			}
+		case GroundItem:
+			if p != nil && !v.marked && p.inv_count < INV_SIZE {
+				p.inventory[p.inv_count] = v.item
+				p.inv_count += 1
+				v.marked = true
+				add_log(state, "Picked up: %s", v.item.name)
+			}
+		}
+	}
+}

src3/skill.odin

@@ -0,0 +1,44 @@
+package main
+
+import rl "vendor:raylib"
+
+// Навыки: Q — рывок, W — спин (AoE), E — хил
+cast_skill :: proc(state: ^GameState, p: ^Player, kind: SkillKind) {
+	slot := skill_slot(p, kind)
+	if slot == -1 do return
+	s := &p.skills[slot]
+	if s.timer > 0 do return
+	s.timer = s.cd
+
+	switch kind {
+	case .Dash:
+		p.dash_timer = 0.2
+		p.vel = p.aim * 750
+		p.invuln_timer = 0.25
+	case .Spin:
+		init_attack(state, Attack{
+			parent   = state.player,
+			dir      = {1, 0},
+			dmg      = player_total_dmg(p) * 2,
+			crit     = player_crit(p),
+			radius   = p.attack_range * 1.2,
+			arc      = 6.28,
+			lifetime = 0.4,
+			color    = {255, 200, 60, 80},
+		})
+	case .Heal:
+		p.hp = min(p.hp + player_max_hp(p) / 3, player_max_hp(p))
+		init_fx(state, FX{
+			parent   = state.player,
+			lifetime = 0.5,
+			base     = BaseEntity{gfx = {0 = GfxCircle{pos = {}, radius = 20, color = {80, 255, 120, 50}}}},
+		})
+	}
+}
+
+skill_slot :: proc(p: ^Player, kind: SkillKind) -> int {
+	for i in 0 ..< SKILL_COUNT {
+		if p.skills[i].kind == kind do return i
+	}
+	return -1
+}

src3/ui.odin

@@ -0,0 +1,155 @@
+package main
+
+import rl "vendor:raylib"
+
+ui_draw_world_hp_bar :: proc(b: ^BaseEntity, actor: ^Actor) {
+	hp_ratio := f32(actor.hp) / f32(actor.max_hp)
+	bar_w := b.col_size * 3
+	bar_pos := b.pos + rl.Vector2{-bar_w / 2, -b.col_size - 10}
+	rl.DrawRectangleV(bar_pos, {bar_w, 4}, {60, 60, 60, 255})
+	rl.DrawRectangleV(bar_pos, {bar_w * hp_ratio, 4}, {220, 40, 40, 255})
+}
+
+// ─── Инвентарь: геометрия слотов ───
+
+INV_SLOT_SIZE :: 44
+INV_PAD :: 6
+INV_COLS :: 4
+
+inv_panel_rect :: proc() -> rl.Rectangle {
+	w := INV_COLS * (INV_SLOT_SIZE + INV_PAD) + INV_PAD
+	h := (INV_SIZE / INV_COLS) * (INV_SLOT_SIZE + INV_PAD) + INV_PAD
+	return rl.Rectangle{f32(SCREEN_W) - f32(w) - 12, 60, f32(w), f32(h)}
+}
+
+inv_slot_rect :: proc(i: int) -> rl.Rectangle {
+	panel := inv_panel_rect()
+	col := i % INV_COLS
+	row := i / INV_COLS
+	x := panel.x + INV_PAD + f32(col) * (INV_SLOT_SIZE + INV_PAD)
+	y := panel.y + INV_PAD + f32(row) * (INV_SLOT_SIZE + INV_PAD)
+	return rl.Rectangle{x, y, INV_SLOT_SIZE, INV_SLOT_SIZE}
+}
+
+ui_inventory_slot_at :: proc(mouse: rl.Vector2) -> int {
+	if !rl.CheckCollisionPointRec(mouse, inv_panel_rect()) do return -1
+	for i in 0 ..< INV_SIZE {
+		if rl.CheckCollisionPointRec(mouse, inv_slot_rect(i)) do return i
+	}
+	return -1
+}
+
+// ─── Отрисовка ───
+
+ui_draw :: proc(state: ^GameState) {
+	_, p := get_player(state)
+	if p == nil do return
+
+	// HP + XP
+	hp_ratio := f32(p.hp) / f32(p.max_hp)
+	rl.DrawRectangle(12, 12, 300, 22, {40, 40, 40, 255})
+	rl.DrawRectangle(12, 12, i32(300 * hp_ratio), 22, {200, 40, 40, 255})
+	rl.DrawText(rl.TextFormat("%d/%d HP", p.hp, p.max_hp), 22, 16, 14, rl.RAYWHITE)
+
+	xp_ratio := f32(p.xp) / f32(p.xp_next)
+	rl.DrawRectangle(12, 38, 300, 12, {40, 40, 40, 255})
+	rl.DrawRectangle(12, 38, i32(300 * xp_ratio), 12, {80, 160, 220, 255})
+	rl.DrawText(rl.TextFormat("Lvl %d  %d/%d XP  Kills: %d", p.level, p.xp, p.xp_next, state.kills), 22, 40, 10, rl.WHITE)
+
+	// статы
+	rl.DrawText(rl.TextFormat("DMG %d  CRIT %d%%  SPD x%.2f", player_total_dmg(p), i32(player_crit(p) * 100), 1 / player_atk_cd(p)), 12, 56, 14, {220, 220, 220, 255})
+
+	// навыки
+	for i in 0 ..< SKILL_COUNT {
+		s := p.skills[i]
+		rect := rl.Rectangle{f32(12 + i * 56), f32(SCREEN_H - 60), 48, 48}
+		rl.DrawRectangleRec(rect, {50, 50, 60, 255})
+		key: cstring = "Q"
+		switch s.kind {
+		case .Dash:
+			key = "Q"
+		case .Spin:
+			key = "W"
+		case .Heal:
+			key = "E"
+		}
+		rl.DrawText(key, i32(rect.x) + 6, i32(rect.y) + 4, 14, rl.RAYWHITE)
+		if s.timer > 0 {
+			ratio := s.timer / s.cd
+			rl.DrawRectangleRec(rect, {0, 0, 0, u8(160 * ratio)})
+			rl.DrawText(rl.TextFormat("%.1f", s.timer), i32(rect.x) + 8, i32(rect.y) + 28, 12, rl.RAYWHITE)
+		}
+	}
+
+	// инвентарь
+	panel := inv_panel_rect()
+	rl.DrawRectangleRec(panel, {35, 35, 40, 220})
+	rl.DrawRectangleLinesEx(panel, 1, {90, 90, 90, 255})
+
+	for i in 0 ..< INV_SIZE {
+		rect := inv_slot_rect(i)
+		rl.DrawRectangleRec(rect, {55, 55, 60, 255})
+		rl.DrawRectangleLinesEx(rect, 1, {90, 90, 90, 255})
+
+		if i < int(p.inv_count) {
+			item := p.inventory[i]
+			rl.DrawCircleV({rect.x + rect.width / 2, rect.y + rect.height / 2}, 10, item_color(item.kind))
+			rl.DrawText(rl.TextFormat("%d", item.level), i32(rect.x) + 4, i32(rect.y) + 28, 10, rl.WHITE)
+		}
+	}
+
+	// тултип выбранного (под курсором)
+	if slot := ui_inventory_slot_at(rl.GetMousePosition()); slot >= 0 && slot < int(p.inv_count) {
+		item := p.inventory[slot]
+		draw_item_tooltip(item, rl.GetMousePosition())
+	}
+
+	// лог
+	for i in 0 ..< state.log_count {
+		rl.DrawText(rl.TextFormat("%s", state.log[i]), 12, SCREEN_H - 160 + i * 18, 14, {200, 200, 200, 255})
+	}
+
+	rl.DrawText("LMB attack  Q dash  W spin  E heal", 12, SCREEN_H - 28, 12, {120, 120, 120, 255})
+}
+
+draw_item_tooltip :: proc(item: Item, at: rl.Vector2) {
+	lines: [8]cstring
+	count := 0
+	lines[count] = rl.TextFormat("%s lvl %d", item.name, item.level)
+	count += 1
+	if item.dmg > 0 {
+		lines[count] = rl.TextFormat("Damage: %d", item.dmg)
+		count += 1
+	}
+	if item.crit > 0 {
+		lines[count] = rl.TextFormat("Crit: %d%%", i32(item.crit * 100))
+		count += 1
+	}
+	if item.atk_spd > 0 {
+		lines[count] = rl.TextFormat("Atk speed: +%d%%", i32(item.atk_spd * 100))
+		count += 1
+	}
+	if item.armor > 0 {
+		lines[count] = rl.TextFormat("Armor: %d", item.armor)
+		count += 1
+	}
+	if item.hp_bonus > 0 {
+		lines[count] = rl.TextFormat("+HP: %d", item.hp_bonus)
+		count += 1
+	}
+	if item.heal > 0 {
+		lines[count] = rl.TextFormat("Heals: %d", item.heal)
+		count += 1
+	}
+
+	tip_x := at.x + 16
+	tip_y := at.y + 16
+	if tip_x + 180 > SCREEN_W do tip_x = at.x - 196
+	if tip_y + f32(count) * 18 + 8 > SCREEN_H do tip_y = at.y - f32(count) * 18 - 8
+
+	rl.DrawRectangle(i32(tip_x), i32(tip_y), 180, i32(count * 18 + 8), {20, 20, 25, 235})
+	rl.DrawRectangleLines(i32(tip_x), i32(tip_y), 180, i32(count * 18 + 8), {150, 150, 150, 255})
+	for i in 0 ..< count {
+		rl.DrawText(lines[i], i32(tip_x) + 6, i32(tip_y) + 6 + i32(i) * 18, 13, rl.RAYWHITE)
+	}
+}