minecraft - minecraft.go

     1  // Package minecraft is a level viewer/editor for the popular creative game minecraft.
     2  package minecraft // import "vimagination.zapto.org/minecraft"
     3  
     4  // TransparentBlockList is a slice of the block ids that are transparent.
     5  type TransparentBlockList []uint16
     6  
     7  // Add is a convenience method for the transparent block list. It adds a new
     8  // block id to the list, making sure to not add duplicates.
     9  func (t *TransparentBlockList) Add(blockID uint16) bool {
    10  	for _, b := range *t {
    11  		if b == blockID {
    12  			return false
    13  		}
    14  	}
    15  
    16  	*t = append(*t, blockID)
    17  
    18  	return true
    19  }
    20  
    21  // Remove is a convenience method to remove a block id from the transparent
    22  // block list.
    23  func (t *TransparentBlockList) Remove(blockID uint16) bool {
    24  	for n, b := range *t {
    25  		if b == blockID {
    26  			lt := len(*t) - 1
    27  			(*t)[n], (*t) = (*t)[lt], (*t)[:lt]
    28  
    29  			return true
    30  		}
    31  	}
    32  
    33  	return false
    34  }
    35  
    36  // LightBlockList is a map of block ids to the amount of light they give off.
    37  type LightBlockList map[uint16]uint8
    38  
    39  // Add is a convenience method for the light block list. It adds a new block id
    40  // to the list with its corresponding light level.
    41  func (l LightBlockList) Add(blockID uint16, light uint8) bool {
    42  	toRet := true
    43  
    44  	if _, ok := l[blockID]; ok {
    45  		toRet = false
    46  	}
    47  
    48  	l[blockID] = light
    49  
    50  	return toRet
    51  }
    52  
    53  // Remove is a convenience method to remove a block id from the light block
    54  // list.
    55  func (l LightBlockList) Remove(blockID uint16) bool {
    56  	if _, ok := l[blockID]; ok {
    57  		delete(l, blockID)
    58  
    59  		return true
    60  	}
    61  
    62  	return false
    63  }
    64  
    65  var (
    66  	// TransparentBlocks is a slice of the block ids that are transparent.
    67  	// This is used in lighting calculations and is user overridable for custom
    68  	// blocks.
    69  	TransparentBlocks = TransparentBlockList{0, 6, 18, 20, 26, 27, 28, 29, 30, 31, 33, 34, 37, 38, 39, 40, 50, 51, 52, 54, 55, 59, 63, 64, 65, 66, 69, 70, 71, 75, 76, 77, 78, 79, 81, 83, 85, 90, 92, 93, 94, 96, 102, 106, 107, 117, 118, 119, 120, 750}
    70  	// LightBlocks is a map of block ids to the amount of light they give off.
    71  	LightBlocks = LightBlockList{
    72  		10:  15,
    73  		11:  15,
    74  		39:  1,
    75  		50:  14,
    76  		51:  15,
    77  		62:  13,
    78  		74:  13,
    79  		76:  7,
    80  		89:  15,
    81  		90:  11,
    82  		91:  15,
    83  		94:  9,
    84  		117: 1,
    85  		119: 15,
    86  		120: 1,
    87  		122: 1,
    88  		124: 15,
    89  		130: 7,
    90  		138: 15,
    91  	}
    92  )
    93