36 lines
1.1 KiB
Go
36 lines
1.1 KiB
Go
package render
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import (
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"github.com/pnx/go-raytracer/graphics"
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"github.com/pnx/go-raytracer/math"
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"github.com/pnx/go-raytracer/world"
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)
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func DrawMiniMap(ctx *graphics.Context, camera math.Transform, level *world.Level) {
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const tileSize = 32
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const scale = float64(tileSize) / float64(world.TileSize)
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// offset := math.Vec2i32{X: 25, Y: 25}
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// size := math.Vec2i32{X: 200, Y: 100}
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ctx.DrawRect(0, 0, int32(level.W*tileSize)+3, int32(level.H*tileSize)+3, math.Color{})
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for y := range level.H {
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for x := range level.W {
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if level.Wall(x, y) {
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ctx.DrawRect(int32(x*tileSize), int32(y*tileSize), tileSize, tileSize, math.Color{R: 255, G: 255, B: 255, A: 255})
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}
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}
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}
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// Camera Position
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cPos := camera.Position.Get().Scale(scale)
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ctx.DrawRect(int32(cPos.X-2), int32(cPos.Y-2), 4, 4, math.Color{R: 255, G: 0, B: 255, A: 255})
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// Rays
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for x := range ctx.Width() {
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hit := CastRay(camera, level, int(x), int(ctx.Width()))
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end := camera.Position.Get().AddVec(hit.Pos.Scale(world.TileSize)).Scale(scale)
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ctx.DrawLine(int32(cPos.X), int32(cPos.Y), int32(end.X), int32(end.Y), math.Color{R: 150, G: 150, B: 0, A: 255})
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}
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}
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