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examples/models: optimize collision detection in first person maze example #5478

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Merged
raysan5 merged 1 commit into from
Jan 7, 2026
+5 −4
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examples/models: optimize collision detection in first person maze example #5478

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9 changes: 5 additions & 4 deletions examples/models/models_first_person_maze.c
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Original file line number Diff line number Diff line change
Expand Up @@ -80,12 +80,13 @@ int main(void)
if (playerCellY < 0) playerCellY = 0;
else if (playerCellY >= cubicmap.height) playerCellY = cubicmap.height - 1;

// Check map collisions using image data and player position
// TODO: Improvement: Just check player surrounding cells for collision
for (int y = 0; y < cubicmap.height; y++)
// Check map collisions using image data and player position against surrounding cells only
for (int y = playerCellY - 1; y <= playerCellY + 1; y++)
{
for (int x = 0; x < cubicmap.width; x++)
if (y < 0 || y >= cubicmap.height) continue;
for (int x = playerCellX - 1; x <= playerCellX + 1; x++)
{
if (x < 0 || x >= cubicmap.width) continue;
if ((mapPixels[y*cubicmap.width + x].r == 255) && // Collision: white pixel, only check R channel
(CheckCollisionCircleRec(playerPos, playerRadius,
(Rectangle){ mapPosition.x - 0.5f + x*1.0f, mapPosition.z - 0.5f + y*1.0f, 1.0f, 1.0f })))
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