examples: fix remaining examples and add them to CI

.github/workflows/ci.yml

@@ -104,6 +104,8 @@ jobs:
       run:  ./v symlink && v -o v2 cmd/v
     - name: Fixed tests
       run: ./v test-fixed
+    - name: Build examples
+      run: ./v build-examples
 #    - name: Test vsh
 #      run:  ./v examples/v_script.vsh
 ##    - name: Test vid

cmd/tools/modules/testing/common.v

@@ -233,7 +233,7 @@ pub fn v_build_failing_skipped(zargs string, folder string, skipped []string) bo
 	mut mains := []string{}
 	for f in files {
 		if !f.contains('modules') && !f.contains('preludes') {
-			if f.contains('/vweb/') || f.contains('/pg/') || f.contains('rune.v') {
+			if f.contains('/vweb/') || f.contains('/pg/') || f.contains('rune.v') || f.contains('/pico') {
 				continue
 
 			}

examples/game_of_life/life_gg.v

@@ -36,7 +36,8 @@ fn print_automaton(a &automaton.Automaton){
 		for x := 1; x<a.field.maxx; x++ {
 			cell := a.field.get(x,y)
 			if cell == 1 {
-				graphics.draw_rect( square_size*x, square_size*y, square_size, square_size, filled_color )
+				graphics.draw_rect(f32(square_size*x), f32(square_size*y), f32(square_size),
+					f32(square_size), filled_color)
 			}
 		}
 	}

examples/hot_reload/graph.v

@@ -41,7 +41,7 @@ fn main() {
 
 [live]
 fn (ctx &Context) draw() {
-	center := f64(size / 2)
+	center := f32(size / 2)
 	ctx.gg.draw_line(0, center, size, center, gx.gray) // x axis
 	ctx.gg.draw_line(center, 0, center, size, gx.gray) // y axis
 	atime := f64( time.ticks() / 10 )
@@ -58,8 +58,8 @@ fn (ctx &Context) draw() {
 		//y = (x + 3) * (x + 3) / stime + stime*2.5
 		//y = math.sqrt(30.0 - x * x) * stime
 		//y -= (stime-0.5) + stime
-		ctx.gg.draw_rect(center + x * scale, center - y * scale, 1, 1, gx.blue)
-		ctx.gg.draw_rect(center + x * scale, center + y * scale, 1, 1, gx.red)
+		ctx.gg.draw_rect(f32(center + x * scale), f32(center - y * scale), 1, 1, gx.blue)
+		ctx.gg.draw_rect(f32(center + x * scale), f32(center + y * scale), 1, 1, gx.red)
 	}
 }
 

examples/random_ips.v

@@ -2,7 +2,7 @@ import rand
 import time
 
 fn main() {
-	rand.seed(time.now().unix)
+	rand.seed(int(time.now().unix))
 
 	for _ in 0..10 {
 		println('${rand.next(255)}.${rand.next(255)}.${rand.next(255)}.${rand.next(255)}')