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Optimize grid line drawing by precomputing line coordinates for improved performance

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Sam 2025-05-31 19:25:36 -05:00
parent 43882f4fef
commit 34f790ca18
1 changed files with 29 additions and 15 deletions
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44
main.py
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@ -141,22 +141,36 @@ def draw_grid(screen, camera, showing_grid=True):
# Draw vertical grid lines (only if zoom is high enough to see them clearly)
if effective_cell_size > 4:
for i in range(GRID_WIDTH + 1):
line_x = grid_left + i * effective_cell_size
if 0 <= line_x <= SCREEN_WIDTH:
start_y = max(0, grid_top)
end_y = min(SCREEN_HEIGHT, grid_bottom)
if start_y < end_y:
pygame.draw.line(screen, GRAY, (line_x, start_y), (line_x, end_y))
# Precompute grid boundaries
vertical_lines = []
horizontal_lines = []
# Draw horizontal grid lines
for i in range(GRID_HEIGHT + 1):
line_y = grid_top + i * effective_cell_size
if 0 <= line_y <= SCREEN_HEIGHT:
start_x = max(0, grid_left)
end_x = min(SCREEN_WIDTH, grid_right)
if start_x < end_x:
pygame.draw.line(screen, GRAY, (start_x, line_y), (end_x, line_y))
for i in range(max(GRID_WIDTH, GRID_HEIGHT) + 1):
# Vertical lines
if i <= GRID_WIDTH:
line_x = grid_left + i * effective_cell_size
if 0 <= line_x <= SCREEN_WIDTH:
start_y = max(0, grid_top)
end_y = min(SCREEN_HEIGHT, grid_bottom)
if start_y < end_y:
vertical_lines.append(((line_x, start_y), (line_x, end_y)))
# Horizontal lines
if i <= GRID_HEIGHT:
line_y = grid_top + i * effective_cell_size
if 0 <= line_y <= SCREEN_HEIGHT:
start_x = max(0, grid_left)
end_x = min(SCREEN_WIDTH, grid_right)
if start_x < end_x:
horizontal_lines.append(((start_x, line_y), (end_x, line_y)))
# Draw all vertical lines in one batch
for start, end in vertical_lines:
pygame.draw.line(screen, GRAY, start, end)
# Draw all horizontal lines in one batch
for start, end in horizontal_lines:
pygame.draw.line(screen, GRAY, start, end)
def main():