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package com.ambientaddons.utils
import net.minecraft.client.renderer.GlStateManager
import net.minecraft.client.renderer.Tessellator
import net.minecraft.client.renderer.WorldRenderer
import net.minecraft.client.renderer.vertex.DefaultVertexFormats
import kotlin.math.roundToInt
object RenderUtils {
// from Mojang
fun renderDurabilityBar(x: Int, y: Int, percentFilled: Double) {
val percent = percentFilled.coerceIn(0.0, 1.0)
if (percent == 0.0) return
val barWidth = (percentFilled * 13.0).roundToInt()
val barColorIndex = (percentFilled * 255.0).roundToInt()
GlStateManager.disableLighting()
GlStateManager.disableDepth()
GlStateManager.disableTexture2D()
GlStateManager.disableAlpha()
GlStateManager.disableBlend()
val tessellator = Tessellator.getInstance()
val worldrenderer = tessellator.worldRenderer
draw(worldrenderer, x + 2, y + 13, 13, 2, 0, 0, 0, 255)
draw(worldrenderer, x + 2, y + 13, 12, 1, (255 - barColorIndex) / 4, 64, 0, 255)
draw(worldrenderer, x + 2, y + 13, barWidth, 1, 255 - barColorIndex, barColorIndex, 0, 255)
GlStateManager.enableAlpha()
GlStateManager.enableTexture2D()
GlStateManager.enableLighting()
GlStateManager.enableDepth()
}
private fun draw(renderer: WorldRenderer, x: Int, y: Int, width: Int, height: Int, red: Int, green: Int, blue: Int, alpha: Int) {
renderer.begin(7, DefaultVertexFormats.POSITION_COLOR)
renderer.pos((x + 0).toDouble(), (y + 0).toDouble(), 0.0).color(red, green, blue, alpha).endVertex()
renderer.pos((x + 0).toDouble(), (y + height).toDouble(), 0.0).color(red, green, blue, alpha).endVertex()
renderer.pos((x + width).toDouble(), (y + height).toDouble(), 0.0).color(red, green, blue, alpha).endVertex()
renderer.pos((x + width).toDouble(), (y + 0).toDouble(), 0.0).color(red, green, blue, alpha).endVertex()
Tessellator.getInstance().draw()
}
}
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