> For the complete documentation index, see [llms.txt](https://kaizo-1.gitbook.io/kaizo-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kaizo-1.gitbook.io/kaizo-docs/lua-engine/game-and-session/essentials.md).

# Essentials

The important Game and session functions.

## world.players

All players in the current snapshot.

world.players

```lua
local players = world.players()
log.info("count " .. #players)
```

## world.resolved

Targets after resolver filters. Use this for ESP style loops.

world.resolved

```lua
for _, t in ipairs(world.resolved()) do
    local p = world.players()[t.player_index]
end
```

## world.to\_screen

Project a world point to overlay coords. Returns `nil` if it is behind the camera.

world.to\_screen

```lua
local p = world.to_screen(0, 10, 0)
if p then
    draw.esp_box(p.x - 20, p.y - 40, 40, 80)
end
```

## world.screen

Screen size and whether the menu is open.

world.screen

```lua
if world.screen().menu_open then
    -- safe to draw clickable ui
end
```

## input.was\_pressed

One shot key press. Use keys macros like `keys.F1` instead of raw numbers.

input.was\_pressed

```lua
if input.was_pressed(keys.F1) then
    toast.push("F1")
end
```

## config.get and config.set

Read and write cheat settings as strings. Bools use `"1"` and `"0"`.

config.get and config.set

```lua
config.set("espEnabled", "1")
local esp = config.get("espEnabled")
```

## Also useful

* keys
* input.is\_down


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