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@ -8,7 +8,7 @@ export default function useLightMap(
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tx: ComputedRef<number>,
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ty: ComputedRef<number>,
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time: ComputedRef<number>,
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lightBarrier: ComputedRef<number>,
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lightBarrier: ComputedRef<number[]>,
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) {
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const W = ((STAGE_WIDTH + 2) * BLOCK_SIZE)
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const H = ((STAGE_HEIGHT + 2) * BLOCK_SIZE)
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@ -17,6 +17,28 @@ export default function useLightMap(
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const playerY = H / 2 - BLOCK_SIZE / 2
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const playerLightSize = BLOCK_SIZE * 1.8
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function getAmbientLightColor() {
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const t = time.value
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// Night time (pale bluish dark: hslpicker.com/#2b293d )
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if (t > 900 || t < 100) {
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return `hsl(245, 20%, 20%)`
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}
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// Morning hours (gradually more reddish hue)
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if (t < 250) {
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const s = Math.round((t - 100) / 1.5) // 0-100%
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const l = Math.round((t - 100) / 1.875) + 20 // 20-100%
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return `hsl(0, ${s}%, ${l}%)`
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}
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// Evening hours (from neutral white to bluish hue with low saturation)
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if (t > 700) {
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const s = 100 - Math.round((t - 700) / 2.5) // 100-20%
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return `hsl(245, ${s}%, ${s}%)`
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}
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// day (neutral white)
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return `hsl(0, 0%, 100%)`
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}
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function drawPlayerLight(sizeMul:number) {
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const playerLight = ctx.createRadialGradient(
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playerX - tx.value, playerY - ty.value, 0,
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@ -32,23 +54,28 @@ export default function useLightMap(
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ctx.fillRect(0, 0, W, H)
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}
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// TODO: support light barrier
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return function update() {
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const t = time.value
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function drawShadows() {
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const barrier = lightBarrier.value
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if (t > 900 || t < 100) {
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ctx.fillStyle = `hsl(0, 0%, 20%)`
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} else if (t < 250) {
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const s = Math.round((t - 100) / 1.5) // 0-100%
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const l = Math.round((t - 100) / 1.875) + 20 // 20-100%
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ctx.fillStyle = `hsl(0, ${s}%, ${l}%)`
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} else if (t > 700) {
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const s = 100 - Math.round((t - 700) / 2.5) // 100-20%
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ctx.fillStyle = `hsl(245, ${s}%, ${s}%)`
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} else {
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ctx.fillStyle = `hsl(0, 0%, 100%)`
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ctx.fillStyle = '#000A'
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for (let col = 0; col < W / BLOCK_SIZE; col++) {
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const level = (barrier[col] - y.value) * BLOCK_SIZE
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const sw = BLOCK_SIZE * 0.935
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const sh = H - level
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const sx = col * sw
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const sy = level * 0.995
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ctx.fillRect(sx, sy, sw, sh)
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ctx.fillRect(sx, sy + 20, sw, sh)
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ctx.fillRect(sx, sy + 40, sw, sh)
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}
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}
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return function update() {
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ctx.fillStyle = getAmbientLightColor()
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ctx.fillRect(0, 0, W, H)
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// TODO: switch from drawing shadows to drawing lights
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drawShadows()
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drawPlayerLight(1)
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}
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}
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