engine.scope(({ start, cls, rectfill, pset, btn, caption, camera, creset, rnd, base }) => { const { Map, Constants, WallTexture, Bayer, fogAmount, applyFog } = base(); const sprites = { wall: WallTexture }; let px = Constants.SpawnX; let py = Constants.SpawnY; let pa = 0; const viewW = 128; const viewH = 128; const halfH = viewH / 2; let health = [true, true, true]; let flashTimer = 0; let shakeTimer = 0; let zWasDown = false; const isDead = () => health.every(h => !h); function takeDamage() { const idx = health.lastIndexOf(true); if (idx === -1) return; health[idx] = false; flashTimer = 12; shakeTimer = 8; } function update() { if (isDead()) return; if (btn('ArrowLeft')) pa -= Constants.RotSpeed; if (btn('ArrowRight')) pa += Constants.RotSpeed; if (btn('ArrowUp')) { const nx = px + Math.cos(pa) * Constants.MoveSpeed; const ny = py + Math.sin(pa) * Constants.MoveSpeed; if (Map[Math.floor(py)][Math.floor(nx)] === 0) px = nx; if (Map[Math.floor(ny)][Math.floor(px)] === 0) py = ny; } if (btn('ArrowDown')) { const nx = px - Math.cos(pa) * Constants.MoveSpeed; const ny = py - Math.sin(pa) * Constants.MoveSpeed; if (Map[Math.floor(py)][Math.floor(nx)] === 0) px = nx; if (Map[Math.floor(ny)][Math.floor(px)] === 0) py = ny; } const zDown = btn('z'); if (zDown && !zWasDown) takeDamage(); zWasDown = zDown; } function draw() { creset(); cls(0); // Screen shake — offsets everything drawn until the next creset() if (shakeTimer > 0) { camera((rnd(2) - 1) * 2, (rnd(2) - 1) * 2); shakeTimer--; } const dirX = Math.cos(pa); const dirY = Math.sin(pa); const planeX = -dirY * Constants.Fov; const planeY = dirX * Constants.Fov; for (let x = 0; x < viewW; x++) { const cameraX = (2 * x) / viewW - 1; const rdx = dirX + planeX * cameraX; const rdy = dirY + planeY * cameraX; let mapX = Math.floor(px); let mapY = Math.floor(py); const deltaDistX = Math.abs(rdx) < 1e-10 ? 1e30 : Math.abs(1 / rdx); const deltaDistY = Math.abs(rdy) < 1e-10 ? 1e30 : Math.abs(1 / rdy); let stepX, stepY, sideDistX, sideDistY; if (rdx < 0) { stepX = -1; sideDistX = (px - mapX) * deltaDistX; } else { stepX = 1; sideDistX = (mapX + 1 - px) * deltaDistX; } if (rdy < 0) { stepY = -1; sideDistY = (py - mapY) * deltaDistY; } else { stepY = 1; sideDistY = (mapY + 1 - py) * deltaDistY; } let side; while (true) { if (sideDistX < sideDistY) { sideDistX += deltaDistX; mapX += stepX; side = 0; } else { sideDistY += deltaDistY; mapY += stepY; side = 1; } if (Map[mapY]?.[mapX] === 1) break; } const perpDist = side === 0 ? sideDistX - deltaDistX : sideDistY - deltaDistY; const colOffset = Math.abs(x - viewW / 2) / (viewW / 2); const torchReduce = Constants.TorchStrength * (1 - colOffset * colOffset); const effectiveDist = Math.max(0, perpDist - torchReduce); const fogFactor = fogAmount(effectiveDist); const stripeH = Math.floor(viewH / perpDist); const drawStart = Math.max(0, Math.floor(halfH - stripeH / 2)); const drawEnd = Math.min(viewH, Math.floor(halfH + stripeH / 2)); let wallHit = side === 0 ? py + perpDist * rdy : px + perpDist * rdx; wallHit -= Math.floor(wallHit); const tx = Math.floor(wallHit * 16); const texStep = 16 / stripeH; let texPos = (drawStart - halfH + stripeH / 2) * texStep; for (let sy = drawStart; sy < drawEnd; sy++) { const ty = Math.min(15, Math.floor(texPos)); texPos += texStep; let color = sprites.wall[ty * 16 + tx]; color = applyFog(color, fogFactor, x, sy); pset(x, sy, color); } } // Radial vignette for (let sy = 0; sy < viewH; sy++) { const cy = (sy - halfH) / halfH; const cy2 = cy * cy; for (let sx = 0; sx < viewW; sx++) { const cx = (sx - viewW / 2) / (viewW / 2); const r2 = cx * cx + cy2; const vignette = Math.min(1, Math.max(0, (r2 - 0.4) / 0.6)); if (vignette > Bayer[(sy % 4) * 4 + (sx % 4)]) pset(sx, sy, 0); } } // Red flash — dithered overlay, fades over 12 frames if (flashTimer > 0) { const intensity = flashTimer / 12; for (let fy = 0; fy < viewH; fy++) { for (let fx = 0; fx < viewW; fx++) { if (intensity > Bayer[(fy % 4) * 4 + (fx % 4)]) pset(fx, fy, 8); } } flashTimer--; } // HUD — drawn after creset() so shake doesn't affect it creset(); for (let i = 0; i < Constants.PlayerMaxHealth; i++) { rectfill(4 + i * 8, 4, 9 + i * 8, 9, health[i] ? 8 : 5); } if (isDead()) { caption('YOU DIED', 44, 64, 8); } else { caption('Z to take damage', 2, 120, 7); } } start({ sprites, sounds: {}, update, draw, target }); });

Editing: Atmospheric Horror FPS: Player Health & Damage

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