53 lines
1.0 KiB
Go
53 lines
1.0 KiB
Go
package reader
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import (
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"fmt"
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"maze-solver/utils"
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)
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type StringsReader struct {
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PathChar, WallChar byte
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Lines *[]string
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}
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func (r *StringsReader) Read() (*RawMaze, error) {
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width, height := len((*r.Lines)[0]), len(*r.Lines)
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ret := &RawMaze{
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Width: width,
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Height: height,
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Data: make([][]byte, height),
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}
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for i := 0; i < height; i++ {
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ret.Data[i] = make([]byte, width/CHUNK_SIZE+1)
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}
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for y, line := range *r.Lines {
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r.processLine(line, &ret.Data[y])
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}
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return ret, nil
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}
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func (r *StringsReader) processLine(line string, dest *[]byte) {
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n_chunks := len(line)/CHUNK_SIZE + 1
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if len(*dest) != n_chunks {
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panic(fmt.Sprintf("The row that should receive the chunks does not have the correct length (%v, want %v)", len(*dest), n_chunks))
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}
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for i := 0; i < n_chunks; i++ {
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var chunk byte = 0 // all walls
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end_index := utils.Min((i+1)*CHUNK_SIZE, len(line))
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for x, c := range line[i*CHUNK_SIZE : end_index] {
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if c == rune(r.PathChar) {
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chunk |= 1 << (CHUNK_SIZE - 1 - x)
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}
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}
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(*dest)[i] = chunk
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}
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}
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