public unsafe void DrawString(ref int charOffset, string text, float x, float y, Alignment alignment, ColorRgba? color = null, float scale = 1f, float angleOffset = 0f, float varianceX = 4f, float varianceY = 4f, float speed = 4f, float charSpacing = 1f, float lineSpacing = 1f)
{
const int MaxColorizeIndex = 7;
if (string.IsNullOrEmpty(text)) {
return;
}
float phase = (float)Time.GameTimer.TotalSeconds * speed;
bool hasColor = false;
// Pre-compute text size
//int lines = 1;
float totalWidth = 0f, lastWidth = 0f, totalHeight = 0f;
float charSpacingPre = charSpacing;
float scalePre = scale;
for (int i = 0; i < text.Length; i++) {
if (text[i] == '\n') {
if (lastWidth < totalWidth) {
lastWidth = totalWidth;
}
totalWidth = 0f;
totalHeight += (charHeight * scale * lineSpacing);
//lines++;
continue;
} else if (text[i] == '\f' && text[i + 1] == '[') {
i += 2;
int formatIndex = i;
while (text[i] != ']') {
i++;
}
if (text[formatIndex + 1] == ':') {
int paramInt;
switch (text[formatIndex]) {
case 'c': // Color
hasColor = true;
break;
case 's': // Scale
if (int.TryParse(text.Substring(formatIndex + 2, i - (formatIndex + 2)), out paramInt)) {
scalePre = paramInt * 0.01f;
}
break;
case 'w': // Char spacing
if (int.TryParse(text.Substring(formatIndex + 2, i - (formatIndex + 2)), out paramInt)) {
charSpacingPre = paramInt * 0.01f;
}
break;
}
}
continue;
}
Rect uvRect;
if (!unicodeChars.TryGetValue(text[i], out uvRect)) {
byte ascii = (byte)text[i];
if (ascii < 128) {
uvRect = asciiChars[ascii];
} else {
uvRect = new Rect();
}
}
if (uvRect.W > 0 && uvRect.H > 0) {
totalWidth += (uvRect.W + baseSpacing) * charSpacingPre * scalePre;
}
}
if (lastWidth < totalWidth) {
lastWidth = totalWidth;
}
totalHeight += (charHeight * scale * lineSpacing);
VertexC1P3T2[] vertexData = canvas.RentVertices(text.Length * 4);
// Set default material
bool colorize, allowColorChange;
ContentRef<Material> material;
ColorRgba mainColor;
if (color.HasValue) {
mainColor = color.Value;
if (mainColor == ColorRgba.TransparentBlack) {
if (hasColor) {
material = materialColor;
mainColor = new ColorRgba(0.46f, 0.46f, 0.4f, 0.5f);
} else {
material = materialPlain;
mainColor = ColorRgba.White;
}
} else {
material = materialColor;
}
colorize = false;
if (mainColor.R == 0 && mainColor.G == 0 && mainColor.B == 0) {
allowColorChange = false;
} else {
allowColorChange = true;
}
} else {
material = materialColor;
mainColor = ColorRgba.White;
colorize = true;
allowColorChange = false;
}
Vector2 uvRatio = new Vector2(
1f / materialPlain.Res.MainTexture.Res.ContentWidth,
1f / materialPlain.Res.MainTexture.Res.ContentHeight
);
int vertexIndex = 0;
Vector2 originPos = new Vector2(x, y);
alignment.ApplyTo(ref originPos, new Vector2(lastWidth, totalHeight));
float lineStart = originPos.X;
for (int i = 0; i < text.Length; i++) {
if (text[i] == '\n') {
// New line
originPos.X = lineStart;
originPos.Y += (charHeight * scale * lineSpacing);
continue;
} else if (text[i] == '\f' && text[i + 1] == '[') {
// Format
i += 2;
int formatIndex = i;
while (text[i] != ']') {
i++;
}
if (text[formatIndex + 1] == ':') {
int paramInt;
switch (text[formatIndex]) {
case 'c': // Color
if (allowColorChange && int.TryParse(text.Substring(formatIndex + 2, i - (formatIndex + 2)), out paramInt)) {
if (paramInt == -1) {
colorize = true;
} else {
colorize = false;
mainColor = colors[paramInt % colors.Length];
}
}
break;
case 's': // Scale
if (int.TryParse(text.Substring(formatIndex + 2, i - (formatIndex + 2)), out paramInt)) {
scale = paramInt * 0.01f;
}
break;
case 'w': // Char spacing
if (int.TryParse(text.Substring(formatIndex + 2, i - (formatIndex + 2)), out paramInt)) {
charSpacing = paramInt * 0.01f;
}
break;
default:
// Unknown formatting
break;
}
}
continue;
}
Rect uvRect;
if (!unicodeChars.TryGetValue(text[i], out uvRect)) {
byte ascii = (byte)text[i];
if (ascii < 128) {
uvRect = asciiChars[ascii];
} else {
uvRect = new Rect();
}
}
if (uvRect.W > 0 && uvRect.H > 0) {
if (colorize) {
mainColor = colors[charOffset % MaxColorizeIndex];
}
Vector3 pos = new Vector3(originPos);
if (angleOffset > 0f) {
float currentPhase = (phase + charOffset) * angleOffset * MathF.Pi;
if (speed > 0f && charOffset % 2 == 1) {
currentPhase = -currentPhase;
}
pos.X += MathF.Cos(currentPhase) * varianceX * scale;
pos.Y += MathF.Sin(currentPhase) * varianceY * scale;
}
pos.X = MathF.Round(pos.X);
pos.Y = MathF.Round(pos.Y);
float x2 = MathF.Round(pos.X + uvRect.W * scale);
float y2 = MathF.Round(pos.Y + uvRect.H * scale);
vertexData[vertexIndex + 0].Pos = pos;
vertexData[vertexIndex + 0].TexCoord.X = uvRect.X;
vertexData[vertexIndex + 0].TexCoord.Y = uvRect.Y;
vertexData[vertexIndex + 0].Color = mainColor;
vertexData[vertexIndex + 1].Pos.X = pos.X;
vertexData[vertexIndex + 1].Pos.Y = y2;
vertexData[vertexIndex + 1].Pos.Z = pos.Z;
vertexData[vertexIndex + 1].TexCoord.X = uvRect.X;
vertexData[vertexIndex + 1].TexCoord.Y = uvRect.Y + uvRect.H * uvRatio.Y;
vertexData[vertexIndex + 1].Color = mainColor;
vertexData[vertexIndex + 2].Pos.X = x2;
vertexData[vertexIndex + 2].Pos.Y = y2;
vertexData[vertexIndex + 2].Pos.Z = pos.Z;
vertexData[vertexIndex + 2].TexCoord.X = uvRect.X + uvRect.W * uvRatio.X;
vertexData[vertexIndex + 2].TexCoord.Y = uvRect.Y + uvRect.H * uvRatio.Y;
vertexData[vertexIndex + 2].Color = mainColor;
vertexData[vertexIndex + 3].Pos.X = x2;
vertexData[vertexIndex + 3].Pos.Y = pos.Y;
vertexData[vertexIndex + 3].Pos.Z = pos.Z;
vertexData[vertexIndex + 3].TexCoord.X = uvRect.X + uvRect.W * uvRatio.X;
vertexData[vertexIndex + 3].TexCoord.Y = uvRect.Y;
vertexData[vertexIndex + 3].Color = mainColor;
if (MathF.RoundToInt(canvas.DrawDevice.TargetSize.X) != (MathF.RoundToInt(canvas.DrawDevice.TargetSize.X) / 2) * 2) {
float align = 0.5f / canvas.DrawDevice.TargetSize.X;
vertexData[vertexIndex + 0].Pos.X += align;
vertexData[vertexIndex + 1].Pos.X += align;
vertexData[vertexIndex + 2].Pos.X += align;
vertexData[vertexIndex + 3].Pos.X += align;
}
if (MathF.RoundToInt(canvas.DrawDevice.TargetSize.Y) != (MathF.RoundToInt(canvas.DrawDevice.TargetSize.Y) / 2) * 2) {
float align = 0.5f * scale / canvas.DrawDevice.TargetSize.Y;
vertexData[vertexIndex + 0].Pos.Y += align;
vertexData[vertexIndex + 1].Pos.Y += align;
vertexData[vertexIndex + 2].Pos.Y += align;
vertexData[vertexIndex + 3].Pos.Y += align;
}
vertexIndex += 4;
originPos.X += ((uvRect.W + baseSpacing) * scale * charSpacing);
}
charOffset++;
}
charOffset++;
// Submit all the vertices as one draw batch
canvas.DrawDevice.AddVertices(
material,
VertexMode.Quads,
vertexData,
0,
vertexIndex);
}