wisplite/a-star-go
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add error box to prevent an occasional panic when the start or end pos wasn't set right

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wisplite
2026-05-14 09:53:40 -05:00
parent 260c39eedc
commit c20f98cf90
1 changed files with 41 additions and 29 deletions
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main.go
+41 -29
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@@ -290,6 +290,7 @@ func main() {
editModeWidth := false
editModeHeight := false
generateGridError := false
posError := false
toolOptions := []string{"Wall", "Start", "End", "Erase"}
toolOptionsText := strings.Join(toolOptions, ";")
@@ -467,6 +468,13 @@ func main() {
}
}
if posError {
result := rg.MessageBox(rl.NewRectangle(screenWidth/2-(100*scale), screenHeight/2-(40*scale), (200*scale), (120*scale)), "Error", "Start and end positions must be\nwithin the generated grid", "OK")
if result >= 0 {
posError = false
}
}
// Generate Grid Button
if rg.Button(rl.NewRectangle(sidebarX+(10*scale), (40*scale), (180*scale), (30*scale)), "Generate Grid") {
width, _ = strconv.Atoi(widthInputValue)
@@ -521,39 +529,43 @@ func main() {
// Calculate Path Button
if rg.Button(rl.NewRectangle(sidebarX+(10*scale), (screenHeight-(40*scale)), (180*scale), (30*scale)), "Calculate Path") {
astar.ResetGrid(false) // keep grid types, otherwise it will delete the board before simulating
astar.SetHeuristic(activeHeuristic)
gridTypes := astar.GetGridTypes()
for i, gridType := range gridTypes {
// reset the map image
switch gridType {
case 0:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(240, 240, 240, 255))
case 1:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(0, 0, 0, 255))
case 2:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(0, 255, 0, 255))
case 3:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(255, 0, 0, 255))
}
}
path := astar.CalculatePath(int(startPos.X), int(startPos.Y), int(endPos.X), int(endPos.Y))
closedSet := astar.GetClosedSet()
for i, closed := range closedSet {
if closed {
x := i % width
y := i / width
if x != int(startPos.X) || y != int(startPos.Y) {
rl.ImageDrawPixel(mapImage, int32(x), int32(y), rl.NewColor(0, 0, 255, 255))
if int(startPos.X) < 0 || int(startPos.X) >= width || int(startPos.Y) < 0 || int(startPos.Y) >= height || int(endPos.X) < 0 || int(endPos.X) >= width || int(endPos.Y) < 0 || int(endPos.Y) >= height {
posError = true
} else {
astar.ResetGrid(false) // keep grid types, otherwise it will delete the board before simulating
astar.SetHeuristic(activeHeuristic)
gridTypes := astar.GetGridTypes()
for i, gridType := range gridTypes {
// reset the map image
switch gridType {
case 0:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(240, 240, 240, 255))
case 1:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(0, 0, 0, 255))
case 2:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(0, 255, 0, 255))
case 3:
rl.ImageDrawPixel(mapImage, int32(i%width), int32(i/width), rl.NewColor(255, 0, 0, 255))
}
}
}
for _, p := range path {
if p[0] != int(startPos.X) || p[1] != int(startPos.Y) { // we want to keep the start position green
rl.ImageDrawPixel(mapImage, int32(p[0]), int32(p[1]), rl.NewColor(255, 255, 0, 255))
path := astar.CalculatePath(int(startPos.X), int(startPos.Y), int(endPos.X), int(endPos.Y))
closedSet := astar.GetClosedSet()
for i, closed := range closedSet {
if closed {
x := i % width
y := i / width
if x != int(startPos.X) || y != int(startPos.Y) {
rl.ImageDrawPixel(mapImage, int32(x), int32(y), rl.NewColor(0, 0, 255, 255))
}
}
}
for _, p := range path {
if p[0] != int(startPos.X) || p[1] != int(startPos.Y) { // we want to keep the start position green
rl.ImageDrawPixel(mapImage, int32(p[0]), int32(p[1]), rl.NewColor(255, 255, 0, 255))
}
}
tex.markFull()
}
tex.markFull()
}
// Status Label