Tutorial
Write your own Raspberry Pi game
Step 09 — Edge detection
We want our fish to reappear if it hits the side of the screen. Drag an “if” block from Control inside the “forever” block, then go to the Sensing category and drag the “touching” block onto the “if”. Select “Edge” from the “touching” dropdown. Drag in a “go to x & y” block from Motion and configure it as in step 8.
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