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add tracer #1

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53f8405
add tracer
Nov 12, 2025
3807c0c
z-fighting "fix"
Nov 13, 2025
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46 changes: 42 additions & 4 deletions src/main/kotlin/com/github/synnerz/barrl/utils/Render3D.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -101,15 +101,19 @@ object Render3D {
var cx = x
var cz = z
var cy = y
var w = width
var h = height
val layer = if (phase) RendererLayers.TRIANGLE_STRIP_ESP else RendererLayers.TRIANGLE_STRIP
val camPos = ctx.camera.pos.negate()

// Add slightly more to the coords if phase is false
// since the block will take over it, and it won't render properly (if it's in a block)
if (!phase) {
cx += 0.003
cy += 0.003
cz += 0.003
cx -= 0.003
cy -= 0.003
cz -= 0.003
w += 0.006
h += 0.006
}

if (translate) {
Expand All @@ -121,7 +125,7 @@ object Render3D {
ctx.stacks,
ctx.consumers.getBuffer(layer),
cx, cy, cz,
cx + width, cy + height + 0.003, cz + width,
cx + w, cy + h, cz + w,
color.red / 255f, color.green / 255f, color.blue / 255f, color.alpha / 255f
)

Expand Down Expand Up @@ -401,6 +405,40 @@ object Render3D {
)
}

/**
* - Renders a tracer
* @param ctx The [Context] instance
* @param x
* @param y
* @param z
* @param color Color instance
* @param phase Whether to render through walls or not (`true` = yes)
* @param translate Whether to translate the position by the camera entity,
* this allows it to look in the correct place in some instances (`true` by default since it's often needed)
*/
@JvmOverloads
fun renderTracer(
ctx: Context,
x: Double, y: Double, z: Double,
color: Color,
phase: Boolean = true,
translate: Boolean = true
) {
if (!ctx.stacksInit) return

val layer = if (phase) RendererLayers.LINES_ESP else RendererLayers.LINES
val camPos = ctx.camera.pos.negate()
val look = ctx.camera.rotation

val ox = (if (translate) x - camPos.x else x).toFloat()
val oy = (if (translate) y - camPos.y else y).toFloat()
val oz = (if (translate) z - camPos.z else z).toFloat()

val consumer = ctx.consumers.getBuffer(layer)
consumer.vertex(look.x, look.y, look.z).color(color.red, color.green, color.blue, color.alpha).normal(0f, 1f, 0f)
consumer.vertex(ox, oy, oz).color(color.red, color.green, color.blue, color.alpha).normal(0f, 1f, 0f)
}

/**
* - Adds a new vertex to the current [consumer]
* @param consumer The [VertexConsumer] instance
Expand Down