worldgen water, fixes

internal/world/chunk.go

@@ -21,7 +21,13 @@ type Chunk struct {
 	renderChanged bool
 	vao, vbo      uint32
 	vbolen        int
-	vertUpdate    chan []Vertex
+	water         struct {
+		vao, vbo uint32
+		vbolen   int
+	}
+	vertUpdate chan []Vertex
+
+	world *World
 }
 
 func (c *Chunk) SetChunkID(x, z int) {
@@ -30,8 +36,9 @@ func (c *Chunk) SetChunkID(x, z int) {
 	c.renderChanged = true
 }
 
-func (c *Chunk) SetBlock(x, y, z int, id int) {
+func (c *Chunk) SetBlock(x, y, z int, id, aux int) {
 	c.Id[x][y][z] = uint16(id)
+	c.Aux[x][y][z] = uint16(aux)
 	c.renderChanged = true
 }