commit 3ce70bd00a2074e9a25369a704a7018e82cb64df
Author: Alexey Bagno <alexey.bagno@gmail.com>
Date:   Sat Aug 1 21:48:30 2026 +0300

    Init

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e9669d9
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+src.bin
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..3f58322
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,2 @@
+run:
+	odin run ./src/
diff --git a/ols.json b/ols.json
new file mode 100644
index 0000000..c488e1b
--- /dev/null
+++ b/ols.json
@@ -0,0 +1,13 @@
+{
+  "$schema": "https://raw.githubusercontent.com/DanielGavin/ols/master/misc/ols.schema.json",
+  "enable_semantic_tokens": true,
+  "enable_document_symbols": true,
+  "enable_hover": true,
+  "enable_snippets": true,
+  "enable_checker_only_saved": true,
+  "enable_inlay_hints_params": true,
+  "enable_inlay_hints_default_params": true,
+  "enable_inlay_hints_implicit_return": true,
+  "enable_inlay_hints_optional_result": true,
+  "enable_inlay_hints_struct_fields": true
+}
diff --git a/src/enemy.odin b/src/enemy.odin
new file mode 100644
index 0000000..6e1386e
--- /dev/null
+++ b/src/enemy.odin
@@ -0,0 +1,38 @@
+package main
+
+import hm "core:container/handle_map"
+import rl "vendor:raylib"
+
+Enemy :: struct {
+	using actor: Actor,
+	touch_dmg:   i32,
+}
+
+enemy_update :: proc(state: ^GameState, p, e: ^Entity) {
+	p := hm.get(&state.entities, state.player)
+}
+
+// sys_enemy_ai :: proc(state: ^GameState) {
+// 	for &enemy in &state.enemies {
+// 		dir := state.player.pos - enemy.pos
+// 		set_vel(cast(^Entity2)&enemy, dir, enemy.speed)
+// 	}
+// }
+//
+// sys_death :: proc(state: ^GameState3) {
+// 	for &enemy in &state.enemies {
+// 		if enemy.hp > 0 || enemy.marked do continue
+// 		enemy.marked = true
+// 		init_entity(
+// 			state,
+// 			GroundItem3 {
+// 				ent = Entity2 {
+// 					GroundItem3 = enemy.pos,
+// 					GroundItem3 = {GroundItem3 = GfxCircle{GroundItem3 = {0, 0}, GroundItem3 = 6, GroundItem3 = {255, 220, 50, 255}}},
+// 					GroundItem3 = 10,
+// 				},
+// 				heal = 25,
+// 			},
+// 		)
+// 	}
+// }
diff --git a/src/gfx.odin b/src/gfx.odin
new file mode 100644
index 0000000..477536a
--- /dev/null
+++ b/src/gfx.odin
@@ -0,0 +1,87 @@
+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 {
+	// TODO: Implement texure rendering
+}
+
+FX :: struct {
+	parentId:  EntityID,
+	lifetime:  f32,
+	permanent: bool,
+	pos:       rl.Vector2,
+	gfx:       [MAX_GFX]Graphics,
+	marked:    bool,
+}
+
+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)
+	}
+}
+
+fx_update :: proc(state: ^GameState3, fx: ^FX, dt: f32) {
+	if fx.marked do return
+	if fx.parentId != 0 {
+		parent, ok := get_ent_by_id(state, fx.parentId)
+		if ok do fx.pos = parent.pos
+	}
+	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)
+	}
+}
+
+init_fx :: proc(state: ^GameState3, fx: FX) {
+	append(&state.fxs, fx)
+}
+
+//TODO: Создание и удаление FX с лайфтаймами
diff --git a/src/item.odin b/src/item.odin
new file mode 100644
index 0000000..be09781
--- /dev/null
+++ b/src/item.odin
@@ -0,0 +1,17 @@
+package main
+
+GroundItem3 :: struct {
+	using ent: Entity2,
+	heal:      i32,
+}
+
+sys_pickup :: proc(state: ^GameState3) {
+	for &item in &state.items {
+		if item.marked do continue
+		_, ok := check_col(cast(^Entity2)&item, cast(^Entity2)&state.player)
+		if ok {
+			state.player.hp = min(state.player.hp + item.heal, state.player.max_hp)
+			item.marked = true
+		}
+	}
+}
diff --git a/src/main.odin b/src/main.odin
new file mode 100644
index 0000000..3e5fc33
--- /dev/null
+++ b/src/main.odin
@@ -0,0 +1,108 @@
+package main
+
+import hm "core:container/handle_map"
+import "core:fmt"
+import rl "vendor:raylib"
+
+main :: proc() {
+	rl.InitWindow(SCREEN_W, SCREEN_H, "Iso Arena")
+	rl.SetTargetFPS(TARGET_FPS)
+	defer rl.CloseWindow()
+
+	state := GameState {
+		camera = {zoom = 1.5, offset = {SCREEN_W / 2, SCREEN_H / 2}},
+	}
+
+	p := hm.add(
+		&state.entities,
+		Entity {
+			pos = {400, 300},
+			col_size = 16,
+			variant = Player {
+				actor = Actor {
+					hp = 100,
+					max_hp = 100,
+					speed = 220,
+					gfx = {0 = GfxCircle{pos = {0, 0}, radius = 14, color = {80, 220, 100, 255}}},
+				},
+				attack_range = 75,
+				attack_dmg = 35,
+				attack_cd = 0.3,
+				invuln_timer = 0,
+			},
+		},
+	)
+
+	state.player = p
+
+	//TODO: Коллизия
+
+	// state.collisions = make([dynamic]CollisionEntry)
+	// defer delete(state.collisions)
+
+	hm.add(
+		&state.entities,
+		Entity {
+			pos = {600, 500},
+			col_size = 16,
+			variant = Enemy {
+				actor = Actor {
+					hp = 40,
+					max_hp = 40,
+					speed = 55,
+					gfx = {0 = GfxCircle{pos = {0, 0}, radius = 11, color = {220, 70, 70, 255}}},
+				},
+			},
+		},
+	)
+
+	hm.add(
+		&state.entities,
+		Entity {
+			pos = {200, 500},
+			col_size = 16,
+			variant = Enemy {
+				actor = Actor {
+					hp = 40,
+					max_hp = 40,
+					speed = 55,
+					gfx = {0 = GfxCircle{pos = {0, 0}, radius = 11, color = {220, 70, 70, 255}}},
+				},
+			},
+		},
+	)
+
+	hm.add(
+		&state.entities,
+		Entity {
+			pos = {600, 500},
+			col_size = 16,
+			variant = Enemy {
+				actor = Actor {
+					hp = 40,
+					max_hp = 40,
+					speed = 55,
+					gfx = {0 = GfxCircle{pos = {0, 0}, radius = 11, color = {220, 70, 70, 255}}},
+				},
+			},
+		},
+	)
+
+
+	for !rl.WindowShouldClose() {
+		dt := rl.GetFrameTime()
+
+		sys_input(&state)
+		sys_enemy_ai(&state)
+		sys_move(&state, dt)
+		sys_collisions(&state)
+		sys_damage(&state)
+		sys_death(&state)
+		sys_pickup(&state)
+		sys_update(&state, dt)
+		sys_sweep(&state)
+
+		state.camera.target = state.player.pos
+		sys_render(&state)
+	}
+}
diff --git a/src/player.odin b/src/player.odin
new file mode 100644
index 0000000..e453457
--- /dev/null
+++ b/src/player.odin
@@ -0,0 +1,49 @@
+package main
+
+import rl "vendor:raylib"
+
+Player2 :: struct {
+	using actor:  Actor,
+	attack_range: f32,
+	attack_dmg:   i32,
+	attack_cd:    f32,
+	attack_timer: f32,
+	invuln_timer: f32,
+}
+
+sys_input :: proc(state: ^GameState3) {
+	p := &state.player
+
+	dir: rl.Vector2
+	if rl.IsKeyDown(.W) || rl.IsKeyDown(.UP) do dir.y -= 1
+	if rl.IsKeyDown(.S) || rl.IsKeyDown(.DOWN) do dir.y += 1
+	if rl.IsKeyDown(.A) || rl.IsKeyDown(.LEFT) do dir.x -= 1
+	if rl.IsKeyDown(.D) || rl.IsKeyDown(.RIGHT) do dir.x += 1
+	set_vel(cast(^Entity2)p, dir, p.speed)
+
+	if p.attack_timer > 0 do p.attack_timer -= rl.GetFrameTime()
+	if rl.IsKeyPressed(.SPACE) && p.attack_timer <= 0 {
+		p.attack_timer = p.attack_cd
+		init_fx(
+			state,
+			FX {
+				parentId = p.id,
+				lifetime = p.attack_cd,
+				permanent = false,
+				gfx = {
+					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}},
+				},
+			},
+		)
+		for &enemy in &state.enemies {
+			if dist(Entity2(p), Entity2(enemy)) <= p.attack_range {
+				enemy.hp -= p.attack_dmg
+			}
+		}
+	}
+}
diff --git a/src/scene.odin b/src/scene.odin
new file mode 100644
index 0000000..1cd1548
--- /dev/null
+++ b/src/scene.odin
@@ -0,0 +1,249 @@
+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
+
+// ─── Базовые типы ───
+
+MAX_GFX :: 2
+MAX_ENTITIES :: 1024
+
+Handle :: hm.Handle32
+
+// ─── Коллизии ───
+
+// EntityKind :: enum {
+// 	Player,
+// 	Enemy,
+// }
+
+// CollisionEntry :: struct {
+// 	a_kind: EntityKind,
+// 	a_idx:  int,
+// 	b_kind: EntityKind,
+// 	b_idx:  int,
+// }
+
+// ─── Игровое состояние ───
+
+
+Entity :: struct {
+	handle:   Handle,
+	pos:      rl.Vector2,
+	col_size: f32,
+	marked:   bool,
+	v:        EntityVariant,
+}
+
+Actor :: struct {
+	vel:    rl.Vector2,
+	hp:     i32,
+	max_hp: i32,
+	speed:  f32,
+	gfx:    [MAX_GFX]Graphics,
+}
+
+Player :: struct {
+	using actor:  Actor,
+	attack_range: f32,
+	attack_dmg:   i32,
+	attack_cd:    f32,
+	attack_timer: f32,
+	invuln_timer: f32,
+}
+
+
+GroundItem :: struct {
+	heal: i32,
+	gfx:  [MAX_GFX]Graphics,
+}
+
+EntityVariant :: union {
+	Player,
+	Enemy,
+	GroundItem,
+}
+
+GameState :: struct {
+	player:   Handle,
+	camera:   rl.Camera2D,
+	entities: hm.Static_Handle_Map(MAX_ENTITIES, Entity, Handle),
+	// particles: hm.Static_Handle_Map(MAX_PARTICLE_FX, Fx2, Handle),
+}
+
+
+// ─── Хелперы ───
+
+set_vel :: #force_inline proc(e: ^Entity, dir: rl.Vector2, speed: f32) {
+	if rl.Vector2Length(dir) > 0 {
+		e.v.vel = rl.Vector2Normalize(dir) * speed
+	} else {
+		e.v.vel = {}
+	}
+}
+
+move_ent :: #force_inline proc(e: ^Entity, dt: f32) {
+	e.v.pos += e.v.vel * dt
+}
+
+dist :: #force_inline proc(a, b: Entity) -> f32 {
+	return rl.Vector2Distance(a.v.pos, b.v.pos)
+}
+
+// entity_rect :: #force_inline proc(e: ^Entity2) -> rl.Rectangle {
+// 	return rl.Rectangle{e.pos.x - e.col_size / 2, e.pos.y - e.col_size / 2, e.col_size, e.col_size}
+// }
+//
+// check_col :: proc(a, b: ^Entity2) -> (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: ^Entity2) -> 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
+// }
+
+// ─── Общие системы ───
+
+sys_move :: proc(state: ^GameState, dt: f32) {
+	it := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Player:
+			e.pos += v.vel * dt
+		case Enemy:
+			e.pos += v.vel * dt
+		}
+	}
+}
+
+// sys_collisions :: proc(state: ^GameState3) {
+// 	clear(&state.collisions)
+//
+// 	p_ent := cast(^Entity2)&state.player
+//
+// 	for &enemy, i in &state.enemies {
+// 		if resolve_aabb(p_ent, cast(^Entity2)&enemy) {
+// 			append(
+// 				&state.collisions,
+// 				CollisionEntry{a_kind = .Player, a_idx = 0, b_kind = .Enemy, b_idx = i},
+// 			)
+// 		}
+// 	}
+//
+// 	for i in 0 ..< len(state.enemies) {
+// 		for j in i + 1 ..< len(state.enemies) {
+// 			resolve_aabb(cast(^Entity2)&state.enemies[i], cast(^Entity2)&state.enemies[j])
+// 		}
+// 	}
+// }
+
+sys_damage :: proc(state: ^GameState) {
+	p := hm.get(&state.entities, state.player)
+	if p.invuln_timer > 0 {
+		p.invuln_timer -= rl.GetFrameTime()
+		return
+	}
+
+	// for c in state.collisions {
+	// 	if c.a_kind == .Player && c.b_kind == .Enemy {
+	// 		state.player.hp -= state.enemies[c.b_idx].touch_dmg
+	// 		state.player.invuln_timer = 0.5
+	// 		if state.player.hp <= 0 {
+	// 			state.player.hp = 0
+	// 		}
+	// 	}
+	// }
+}
+
+//TODO: УБрать вообще? мапа фиксит инвалидацию поинтеров
+sys_sweep :: proc(state: ^GameState) {
+
+	it := hm.iterator_make(&state.entities)
+	for e, i in hm.iterate(&it) {
+		if e.marked do hm.remove(&state.entities, i)
+	}
+
+	// i = 0
+	// for i < len(state.fxs) {
+	// 	if state.fxs[i].marked {
+	// 		ordered_remove(&state.fxs, i)
+	// 	} else {
+	// 		i += 1
+	// 	}
+	// }
+}
+
+// entity_draw :: proc(e: ^Entity2) {
+// 	for g in e.gfx {
+// 		gfx_draw(e.pos, g)
+// 	}
+// }
+//
+sys_update :: proc(state: ^GameState, dt: f32) {
+	p := hm.get(&state.entities, state.player)
+
+	it := hm.iterator_make(&state.entities)
+	for e, _ in hm.iterate(&it) {
+		#partial switch &v in e.v {
+		case Enemy:
+			enemy_update(state, p, e)
+		}
+	}
+}
+
+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) {
+			#partial switch &v in e.v {
+			case Player:
+				for g in &v.gfx do gfx_draw(e.pos, g)
+			case Enemy:
+				for g in &v.gfx do gfx_draw(e.pos, g)
+			}
+		}
+
+		// for &e in state.enemies {
+		// 	entity_draw(&e)
+		// 	ui_draw_world_hp_bar(cast(^Actor)&e)
+		// }
+		//
+		// for &it in state.items {
+		// 	entity_draw(&it)
+		// }
+		//
+		// for &fx in state.fxs {
+		// 	fx_draw(&fx)
+		// }
+		//
+		// entity_draw(&state.player)
+		// ui_draw_world_hp_bar(cast(^Actor)&state.player)
+	}
+	rl.EndMode2D()
+
+	// ui_draw(state)
+
+	rl.EndDrawing()
+}
diff --git a/src/ui.odin b/src/ui.odin
new file mode 100644
index 0000000..c229fee
--- /dev/null
+++ b/src/ui.odin
@@ -0,0 +1,24 @@
+package main
+
+import rl "vendor:raylib"
+
+
+ui_draw_world_hp_bar :: proc(actor: ^Actor) {
+	hp_ratio := f32(actor.hp) / f32(actor.max_hp)
+	bar_w := actor.col_size * 3
+	bar_pos := actor.pos + rl.Vector2{-bar_w / 2, -actor.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: ^GameState3) {
+	rl.DrawText(
+		rl.TextFormat("HP: %d/%d", state.player.hp, state.player.max_hp),
+		12,
+		12,
+		20,
+		rl.RAYWHITE,
+	)
+	rl.DrawText(rl.TextFormat("Enemies: %d", len(state.enemies)), 12, 36, 16, {180, 180, 180, 255})
+	rl.DrawText("[SPACE] attack  [WASD] move", 12, SCREEN_H - 28, 14, {120, 120, 120, 255})
+}