add armDown func (ff749b74) · Commits · blackheaven / tinygraphs

draw/spaceinvaders/spaceinvaders.go

+24 −14

Original line number	Diff line number	Diff line
		@@ -182,7 +182,6 @@ func hasArm2(invader invader, squares, xQ, yQ int) (arm bool) {
		if xQ == half-1 \|\| xQ == squares-half {
		arm = true
		}

		}
		return
		}
		@@ -225,6 +224,28 @@ func hasArmExtension2(invader invader, squares, xQ, yQ int) (armExtension bool)
		return
		}

		func hasArmDown(invader invader, armIndex, squares, xQ, yQ int) (armDown bool) {
		if yQ != armIndex \|\| invader.armsUp \|\| invader.armSize >= 3 {
		return
		}
		if invader.arms <= 0 {
		return
		}

		leftOver := squares - invader.length
		half := leftOver / 2
		if (squares - half - half - 1) >= invader.length {
		if xQ == half-1 \|\| xQ == squares-half {
		armDown = true
		}
		} else {
		if xQ == half-2 \|\| xQ == squares+1-half {
		armDown = true
		}
		}
		return
		}

		func hasBody(invader invader, squares, xQ int) (body bool) {
		leftOver := squares - invader.length
		half := leftOver / 2
		@@ -375,20 +396,9 @@ func SpaceInvaders(w http.ResponseWriter, key string, colors []color.RGBA, size

		armIndex := getArmIndex(invader, lowBodyIndex)

		if yQ == armIndex && !invader.armsUp && invader.armSize < 3 {
		leftOver := squares - invader.length
		if invader.arms > 0 {
		if (squares - leftOver/2 - (leftOver / 2) - 1) >= invader.length {
		if xQ == (leftOver/2)-1 \|\| xQ == squares-leftOver/2 {
		if hasArmDown(invader, armIndex, squares, yQ, xQ) {
		fill = draw.FillFromRGBA(colorMap[xQ])
		}
		} else {
		if xQ == (leftOver/2)-2 \|\| xQ == squares+1-leftOver/2 {
		fill = draw.FillFromRGBA(colorMap[xQ])
		}
		}
		}
		}

		// arm down extension.
		if yQ == armIndex && !invader.armsUp && invader.armSize == 3 {