Paint Gun

A paint studio. Flip the switch to pick up the brush, look at a brick and click: the brick turns the current paint color. A button steps through a palette, and a light shows the color you will paint with.

Contents

• You need
• Code
• Wire it
• Check it in game
• Change it
• How it works

You need

• a Switch, to pick up the brush
• a Button, to pick the next color
• a Point Light, as the color swatch

switch Character -> chip painter
button Held -> chip next
chip swatch -> light Color

Code

// How far the painter can reach.
const REACH = 1000.0
// The colors the button steps through.
const PALETTE = [
  Color(0.9, 0.1, 0.1),
  Color(0.1, 0.6, 0.1),
  Color(0.1, 0.3, 0.9),
  Color(1.0, 0.85, 0.1),
  Color(1.0, 1.0, 1.0),
]

@left in painter: character
@left in next: exec

var pick: int = 0
var paint: color = Color(0.9, 0.1, 0.1)
@right out swatch = paint.Value

let keys = InputReader(painter)

on next {
  pick = (pick + 1) % PALETTE.length()
  paint = PALETTE[pick]
}

on keys.PressedLeftMouse {
  let aim = painter.GetAim()
  let r = Sweep(aim.Origin, aim.Direction, REACH, ignore = painter, detectBricks = true)
  on r.Hit {
    r.HitBrick.SetBrickProperty(BrickProperty.Color, paint)
  }
}

Wire it

1. Compile the chip and paste it in-game.
2. Wire the Switch’s Character to painter.
3. Wire the Button’s Held to next.
4. Wire swatch to the Point Light’s Color, and turn off the light’s Use Brick Color, or it ignores the wired color.

Check it in game

• Before any press: the swatch light is red.
• Flip the switch, look at a brick you built and click: the brick turns red. Empty your hands first, so the click does nothing else.
• Hold the mouse button and sweep your view across other bricks: only the first brick changes. Let go and click again for the next one.
• Press the button: the swatch turns green, and the next brick you paint is green. Five presses bring it back to red.
• With a second player: they flip the switch, and now their clicks paint and yours do nothing.

Change it

• Add colors to PALETTE, or change them. The first one should match the starting paint.
• Shorten REACH so the painter must walk up to what they paint.
• Paint only while the switch is on: add @left in active: bool, wire the Switch’s Enabled to it, and write on keys.PressedLeftMouse && active.
• Let several players paint at once, each with their own brush: give each painter a chip of their own, as in One Chip per Player.

How it works

The Switch’s Character holds the last player who flipped it, and InputReader turns that player’s keys into live wires (Remote Control). on keys.PressedLeftMouse runs once per click, with no timer. GetAim() gives where the painter looks from and the direction, and Sweep casts a ray along it. on r.Hit runs only when the ray met a brick (Forking and Merging). SetBrickProperty(BrickProperty.Color, ...) recolors that brick (Game Enums). The palette is a const array, read in a handler (Weighted Loot).