1 files changed, 90 insertions, 0 deletions
diff --git a/src/main/java/gregtech/common/render/GT_LaserRenderer.java b/src/main/java/gregtech/common/render/GT_LaserRenderer.java
new file mode 100644
index 0000000000..1c54a5d58b
--- /dev/null
+++ b/src/main/java/gregtech/common/render/GT_LaserRenderer.java
@@ -0,0 +1,90 @@
+package gregtech.common.render;
+
+import net.minecraft.client.renderer.OpenGlHelper;
+import net.minecraft.client.renderer.Tessellator;
+import net.minecraft.client.renderer.tileentity.TileEntitySpecialRenderer;
+import net.minecraft.tileentity.TileEntity;
+
+import org.lwjgl.opengl.GL11;
+
+import cpw.mods.fml.client.registry.ClientRegistry;
+import gregtech.common.tileentities.render.TileLaser;
+
+public class GT_LaserRenderer extends TileEntitySpecialRenderer {
+
+    private double zOffset = 0.0;
+    private double xOffset = 0.0;
+
+    // Relative to block size
+    final private double lineRadius = 0.03;
+
+    final private float lineOpacity = 0.7F;
+
+    final private float laserSpeed = 0.8F;
+
+    public GT_LaserRenderer() {
+        ClientRegistry.bindTileEntitySpecialRenderer(TileLaser.class, this);
+    }
+
+    private void maths(float counter) {
+        float tc = (0.05F * counter);
+        zOffset = 0.5 + 0.45 * Math.sin(2 * Math.PI * tc);
+        xOffset = 0.5 + 0.45 * Math.sin(0.5 * Math.PI * tc);
+    }
+
+    private void renderFakeLine(TileLaser laser, double x1, double y1, double z1, double x2, double y2, double z2) {
+        Tessellator tessellator = Tessellator.instance;
+        tessellator.startDrawingQuads();
+        tessellator.setColorRGBA_F(laser.getRed(), laser.getGreen(), laser.getBlue(), lineOpacity);
+        tessellator.addVertex(x1 - lineRadius, y1, z1);
+        tessellator.addVertex(x1 + lineRadius, y1, z1);
+        tessellator.addVertex(x2 + lineRadius, y2, z2);
+        tessellator.addVertex(x2 - lineRadius, y2, z2);
+
+        tessellator.addVertex(x1, y1, z1 - lineRadius);
+        tessellator.addVertex(x1, y1, z1 + lineRadius);
+        tessellator.addVertex(x2, y2, z2 + lineRadius);
+        tessellator.addVertex(x2, y2, z2 - lineRadius);
+        tessellator.draw();
+    }
+
+    @Override
+    public void renderTileEntityAt(TileEntity tile, double x, double y, double z, float timeSinceLastTick) {
+        final TileLaser ltile = (TileLaser) tile;
+
+        if (ltile.getShouldRender()) {
+            // Push GL state
+            GL11.glPushMatrix();
+            GL11.glPushAttrib(GL11.GL_ENABLE_BIT);
+
+            GL11.glDisable(GL11.GL_LIGHTING);
+            GL11.glDisable(GL11.GL_CULL_FACE);
+            GL11.glDisable(GL11.GL_TEXTURE_2D);
+            GL11.glEnable(GL11.GL_BLEND);
+
+            // Full brightness on this thing (Emits glow with shaders)
+            OpenGlHelper.setLightmapTextureCoords(OpenGlHelper.lightmapTexUnit, 240.f, 240.f);
+
+            GL11.glTranslated(x + 0.5, y + 0.5, z + 0.5);
+            GL11.glRotated(ltile.rotationAngle, ltile.rotAxisX, ltile.rotAxisY, ltile.rotAxisZ);
+            GL11.glTranslated(-x - 0.5, -y - 0.5, -z - 0.5);
+
+            if (ltile.realism) {
+                renderFakeLine(ltile, x + xOffset, y + 4.0, z + zOffset, x + xOffset, y + 0.5, z + zOffset);
+            } else {
+                renderFakeLine(ltile, x + 0.5, y + 4.0, z + 0.5, x + xOffset, y + 0.5, z + zOffset);
+            }
+
+            // Pop GL state
+            GL11.glPopAttrib();
+            GL11.glPopMatrix();
+
+            // Movement calculations
+            maths(ltile.counter);
+            ltile.counter += laserSpeed;
+            if (ltile.counter >= 80) {
+                ltile.counter = 0;
+            }
+        }
+    }
+}