Added splosion visualization

spectator.go

@@ -2,6 +2,7 @@ package client
 
 import (
 	"log"
+	"math"
 
 	"github.com/nsf/termbox-go"
 
@@ -130,14 +131,27 @@ func (s *SimpleSpectator) Run() {
 				}
 
 				for _, splosion := range u.Splosions {
-					x := int((splosion.Position.X / s.width) * float64(s.viewX))
-					y := int((splosion.Position.Y / s.height) * float64(s.viewY))
-					termbox.SetCell(
-						x,
-						s.viewY-y,
-						'O',
-						termbox.ColorRed|termbox.AttrBold, termbox.ColorBlack,
-					)
+					startX := int(((splosion.Position.X - float64(splosion.Radius)) / s.width) * float64(s.viewX))
+					startY := int(((splosion.Position.Y - float64(splosion.Radius)) / s.height) * float64(s.viewY))
+					stopX := int(((splosion.Position.X+float64(splosion.Radius))/s.width)*float64(s.viewX)) + 1
+					stopY := int(((splosion.Position.Y+float64(splosion.Radius))/s.height)*float64(s.viewY)) + 1
+					for x := startX; x < stopX; x++ {
+						for y := startY; y < stopY; y++ {
+							realX := float64(x) * s.width / float64(s.viewX)
+							realY := float64(y) * s.height / float64(s.viewY)
+							dX := realX - splosion.Position.X
+							dY := realY - splosion.Position.Y
+							curRad := math.Sqrt(dX*dX + dY*dY)
+							if curRad < float64(splosion.Radius) {
+								termbox.SetCell(
+									x,
+									s.viewY-y,
+									'·',
+									termbox.ColorYellow|termbox.AttrBold, termbox.ColorRed,
+								)
+							}
+						}
+					}
 				}
 
 				err := termbox.Flush()