Initial commit

I can parse some of the data files, and extract individual frames from .obj
files. I can't yet convert those frames into something viewable.

internal/data/animated_object_definitions.go

@@ -0,0 +1,127 @@
+package data
+
+import (
+	"bufio"
+	"errors"
+	//	"fmt"
+	"io"
+	"strconv"
+	"strings"
+)
+
+type Cell struct {
+	X int // FIXME: This is just a guess, but I think it's a 3D coordinate system
+	Y int
+	Z int
+}
+
+type AnimatedObject struct {
+	CentreCell     Cell
+	Direction      int
+	Type           int
+	AnimationID    int
+	AnimationGroup int
+	AnimatedType   int
+	AnimationIDs   CompassPoints // 8 of these, down to MoveBits. Compass points?
+	InCells        CompassPoints
+	VisualBits     CompassPoints
+	MoveBits       CompassPoints
+	Visibility     int
+	Protection     int
+	MinDelay       int // in milliseconds
+	DelayRange     int // in milliseconds
+}
+
+func LoadAnimatedObjectDefinitions(filename string) ([]AnimatedObject, error) {
+	var out []AnimatedObject
+
+	scanLines, err := fileToScanner(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	for {
+		obj, err := consumeAnimatedObjectDefinition(scanLines)
+		if err == io.EOF {
+			return out, nil
+		} else if err != nil {
+			return nil, err
+		}
+
+		out = append(out, obj)
+	}
+}
+
+func consumeAnimatedObjectDefinition(scanner *bufio.Scanner) (AnimatedObject, error) {
+	var out AnimatedObject
+	var err error
+
+	out.CentreCell, err = consumeCell(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	if err := consumeIntPtrs(
+		scanner,
+		&out.Direction, &out.Type, &out.AnimationID, &out.AnimationGroup, &out.AnimatedType,
+	); err != nil {
+		return out, err
+	}
+
+	// 8-int arrays
+	out.AnimationIDs, err = consumeCompassPoints(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	out.InCells, err = consumeCompassPoints(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	out.VisualBits, err = consumeCompassPoints(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	out.MoveBits, err = consumeCompassPoints(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	if err := consumeIntPtrs(
+		scanner,
+		&out.Visibility, &out.Protection, &out.MinDelay, &out.DelayRange,
+	); err != nil {
+		return out, err
+	}
+
+	return out, nil
+}
+
+func consumeCell(scanner *bufio.Scanner) (Cell, error) {
+	out := Cell{}
+	str, err := consumeString(scanner)
+	if err != nil {
+		return out, err
+	}
+
+	parts := strings.Split(str, " ")
+	if len(parts) != 3 {
+		return out, errors.New("Malformed cell definition")
+	}
+
+	if out.X, err = strconv.Atoi(parts[0]); err != nil {
+		return out, err
+	}
+
+	if out.Y, err = strconv.Atoi(parts[1]); err != nil {
+		return out, err
+	}
+
+	if out.Z, err = strconv.Atoi(parts[2]); err != nil {
+		return out, err
+	}
+
+	return out, nil
+}