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com.codingame.gameengine.module.entities.Serializer Maven / Gradle / Ivy
package com.codingame.gameengine.module.entities;
import java.text.DecimalFormat;
import java.text.DecimalFormatSymbols;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
import java.util.Set;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import com.codingame.gameengine.module.entities.Entity.Type;
import com.google.inject.Singleton;
@Singleton
class Serializer {
public Map commands, keys, separators;
Map types;
Map curves;
private static DecimalFormat decimalFormat;
static {
DecimalFormatSymbols otherSymbols = new DecimalFormatSymbols();
otherSymbols.setDecimalSeparator('.');
decimalFormat = new DecimalFormat("0.######");
decimalFormat.setGroupingUsed(false);
decimalFormat.setDecimalFormatSymbols(otherSymbols);
}
Serializer() {
keys = new HashMap<>();
keys.put("rotation", "r");
keys.put("radius", "R");
keys.put("x2", "X");
keys.put("y2", "Y");
keys.put("width", "w");
keys.put("height", "h");
keys.put("tint", "t");
keys.put("fillColor", "f");
keys.put("fillAlpha", "F");
keys.put("lineColor", "c");
keys.put("lineWidth", "W");
keys.put("lineAlpha", "A");
keys.put("alpha", "a");
keys.put("image", "i");
keys.put("strokeThickness", "S");
keys.put("strokeColor", "sc");
keys.put("fontFamily", "ff");
keys.put("fontSize", "s");
keys.put("fontWeight", "fw");
keys.put("text", "T");
keys.put("textAlign", "ta");
keys.put("children", "ch");
keys.put("scaleX", "sx");
keys.put("scaleY", "sy");
keys.put("anchorX", "ax");
keys.put("anchorY", "ay");
keys.put("visible", "v");
keys.put("zIndex", "z");
keys.put("blendMode", "b");
keys.put("images", "I");
keys.put("restarted", "rs");
keys.put("playing", "p");
keys.put("loop", "l");
keys.put("duration", "d");
keys.put("baseWidth", "bw");
keys.put("baseHeight", "bh");
keys.put("points", "ps");
keys.put("skewX", "kx");
keys.put("skewY", "ky");
keys.put("tileX", "tx");
keys.put("tileY", "ty");
keys.put("tileScaleX", "tsx");
keys.put("tileScaleY", "tsy");
keys.put("scaleMode", "sm");
commands = new HashMap<>();
commands.put("CREATE", "C");
commands.put("UPDATE", "U");
commands.put("LOADSPRITESHEET", "L");
separators = new HashMap<>();
separators.put("COMMAND", ";");
separators.put("COMMAND_ARGUMENT", " ");
separators.put("ARGUMENT_DETAILS", ",");
separators.put("COMMAND_TYPE", "\n");
curves = new HashMap<>();
curves.put(Curve.NONE, "_");
curves.put(Curve.IMMEDIATE, "Γ");
curves.put(Curve.LINEAR, "/");
curves.put(Curve.EASE_IN, "🙖");
curves.put(Curve.EASE_OUT, "🙒");
curves.put(Curve.EASE_IN_AND_OUT, "∫");
curves.put(Curve.ELASTIC, "~");
types = new HashMap<>();
types.put(Type.RECTANGLE, "R");
types.put(Type.ROUNDED_RECTANGLE, "K");
types.put(Type.CIRCLE, "C");
types.put(Type.GROUP, "G");
types.put(Type.BUFFERED_GROUP, "B");
types.put(Type.LINE, "L");
types.put(Type.SPRITE, "S");
types.put(Type.TEXT, "T");
types.put(Type.BITMAPTEXT, "X");
types.put(Type.SPRITEANIMATION, "A");
types.put(Type.POLYGON, "P");
types.put(Type.TILING_SPRITE, "D");
if (keys.values().stream().distinct().count() != keys.values().size()) {
throw new RuntimeException("Duplicate keys");
}
if (commands.values().stream().distinct().count() != commands.values().size()) {
throw new RuntimeException("Duplicate commands");
}
if (separators.values().stream().distinct().count() != separators.values().size()) {
throw new RuntimeException("Duplicate separators");
}
if (types.values().stream().distinct().count() != types.values().size()) {
throw new RuntimeException("Duplicate types");
}
if (curves.values().stream().distinct().count() != curves.values().size()) {
throw new RuntimeException("Duplicate curves");
}
if (keys.values().stream().anyMatch(character -> curves.containsValue(character))) {
throw new RuntimeException("Same string used for a curve and a property");
}
if (separators.values().stream().anyMatch(
character -> curves.containsValue(character) ||
keys.containsValue(character) ||
types.containsValue(character) ||
commands.containsValue(character)
)) {
throw new RuntimeException("String already used as separator");
}
}
/**
* Join multiple object into a space separated string
*/
static private String join(Object... args) {
return Stream.of(args).map(String::valueOf).collect(Collectors.joining(" "));
}
static String formatFrameTime(double t) {
return decimalFormat.format(t);
}
static String escape(String text) {
String escaped = text.replaceAll("\\'", "\\\\'");
if (escaped.contains(" ") || escaped.contains(";") || escaped.contains("\n")) {
return "'" + escaped + "'";
}
return escaped;
}
private String serializeEntitiesStateDiff(Entity entity, EntityState diff, String frameInstant) {
String meta = join(
entity.getId(),
frameInstant
);
if (diff.isEmpty()) {
return meta;
}
return join(
meta,
minifyDiff(diff)
);
}
private String minifyParam(String key, EntityState.Param param) {
String result;
if (key.equals("rotation") || key.equals("skewX") || key.equals("skewY")) {
result = String.valueOf((int) Math.toDegrees((double) param.value));
} else if (param.value instanceof Double) {
result = decimalFormat.format(param.value);
} else if (param.value instanceof Boolean) {
result = (boolean) param.value ? "1" : "0";
} else {
result = escape(param.value.toString());
}
// We don't send the default curve, it will be implied.
if (param.curve.equals(Curve.DEFAULT)) {
return result;
}
return join(result, curves.get(param.curve));
}
private String minifyKey(String key) {
return keys.getOrDefault(key, key);
}
private String minifyDiff(EntityState diff) {
return diff.entrySet().stream()
.map((entry) -> join(minifyKey(entry.getKey()), minifyParam(entry.getKey(), entry.getValue())))
.collect(Collectors.joining(separators.get("COMMAND_ARGUMENT")));
}
private String serializeCreateEntity(Entity e) {
return join(
types.get(e.getType())
);
}
public Optional serializeCreateEntities(List> entities) {
if (entities.isEmpty()) {
return Optional.empty();
} else {
return Optional.of(
commands.get("CREATE") + entities.stream()
.map(e -> serializeCreateEntity(e))
.collect(Collectors.joining(separators.get("COMMAND")))
);
}
}
private String serializeLoadSpriteSheet(SpriteSheetSplitter spriteSheet) {
return join(
spriteSheet.getName(), spriteSheet.getSourceImage(), spriteSheet.getWidth(), spriteSheet.getHeight(),
spriteSheet.getOrigRow(), spriteSheet.getOrigCol(), spriteSheet.getImageCount(), spriteSheet.getImagesPerRow()
);
}
public Optional serializeLoadSpriteSheets(List spriteSheets) {
if (spriteSheets.isEmpty()) {
return Optional.empty();
} else {
return Optional.of(
commands.get("LOADSPRITESHEET") + spriteSheets.stream()
.map(e -> serializeLoadSpriteSheet(e))
.collect(Collectors.joining(separators.get("COMMAND")))
);
}
}
public Optional serializeWorldDiff(List diffs) {
if (diffs.isEmpty()) {
return Optional.empty();
} else {
List serialized = diffs.stream()
.map(worldDiff -> {
Optional result;
Set, EntityState>> diff = worldDiff.getEntityStateMap().entrySet();
if (diff.isEmpty()) {
result = Optional.empty();
} else {
result = Optional.of(
diff
.stream()
.map(e -> {
return serializeEntitiesStateDiff(e.getKey(), e.getValue(), worldDiff.getFrameTime());
})
.collect(Collectors.joining(separators.get("COMMAND")))
);
}
return result;
})
.filter(Optional::isPresent)
.map(Optional::get)
.collect(Collectors.toList());
if (serialized.isEmpty()) {
return Optional.empty();
} else {
return Optional.of(
commands.get("UPDATE") + serialized
.stream()
.collect(Collectors.joining(separators.get("COMMAND")))
);
}
}
}
}
