148 lines
4.1 KiB
Go
148 lines
4.1 KiB
Go
package raylib
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/*
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#include "raylib.h"
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#include <stdlib.h>
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*/
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import "C"
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import "unsafe"
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// SpriteFont character info
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type CharInfo struct {
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// Character value (Unicode)
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Value int32
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// Character rectangle in sprite font
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Rec Rectangle
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// Character offset X when drawing
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OffsetX int32
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// Character offset Y when drawing
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OffsetY int32
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// Character advance position X
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AdvanceX int32
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}
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func (c *CharInfo) cptr() *C.CharInfo {
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return (*C.CharInfo)(unsafe.Pointer(c))
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}
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// Returns new SpriteFont
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func NewCharInfo(value int32, rec Rectangle, offsetX, offsetY, advanceX int32) CharInfo {
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return CharInfo{value, rec, offsetX, offsetY, advanceX}
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}
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// Returns new SpriteFont from pointer
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func NewCharInfoFromPointer(ptr unsafe.Pointer) CharInfo {
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return *(*CharInfo)(ptr)
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}
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// SpriteFont type, includes texture and charSet array data
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type SpriteFont struct {
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// Font texture
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Texture Texture2D
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// Base size (default chars height)
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BaseSize int32
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// Number of characters
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CharsCount int32
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// Characters info data
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Chars *CharInfo
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}
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func (s *SpriteFont) cptr() *C.SpriteFont {
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return (*C.SpriteFont)(unsafe.Pointer(s))
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}
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// Returns new SpriteFont
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func NewSpriteFont(texture Texture2D, baseSize, charsCount int32, chars *CharInfo) SpriteFont {
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return SpriteFont{texture, baseSize, charsCount, chars}
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}
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// Returns new SpriteFont from pointer
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func NewSpriteFontFromPointer(ptr unsafe.Pointer) SpriteFont {
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return *(*SpriteFont)(ptr)
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}
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// Get the default SpriteFont
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func GetDefaultFont() SpriteFont {
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ret := C.GetDefaultFont()
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v := NewSpriteFontFromPointer(unsafe.Pointer(&ret))
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return v
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}
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// Load a SpriteFont image into GPU memory
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func LoadSpriteFont(fileName string) SpriteFont {
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cfileName := C.CString(fileName)
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defer C.free(unsafe.Pointer(cfileName))
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ret := C.LoadSpriteFont(cfileName)
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v := NewSpriteFontFromPointer(unsafe.Pointer(&ret))
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return v
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}
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// Load a SpriteFont from TTF font with parameters
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func LoadSpriteFontTTF(fileName string, fontSize int32, charsCount int32, fontChars *int32) SpriteFont {
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cfileName := C.CString(fileName)
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defer C.free(unsafe.Pointer(cfileName))
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cfontSize := (C.int)(fontSize)
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ccharsCount := (C.int)(charsCount)
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cfontChars := (*C.int)(unsafe.Pointer(fontChars))
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ret := C.LoadSpriteFontTTF(cfileName, cfontSize, ccharsCount, cfontChars)
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v := NewSpriteFontFromPointer(unsafe.Pointer(&ret))
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return v
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}
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// Unload SpriteFont from GPU memory
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func UnloadSpriteFont(spriteFont SpriteFont) {
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cspriteFont := spriteFont.cptr()
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C.UnloadSpriteFont(*cspriteFont)
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}
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// Draw text (using default font)
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func DrawText(text string, posX int32, posY int32, fontSize int32, color Color) {
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ctext := C.CString(text)
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defer C.free(unsafe.Pointer(ctext))
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cposX := (C.int)(posX)
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cposY := (C.int)(posY)
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cfontSize := (C.int)(fontSize)
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ccolor := color.cptr()
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C.DrawText(ctext, cposX, cposY, cfontSize, *ccolor)
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}
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// Draw text using SpriteFont and additional parameters
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func DrawTextEx(spriteFont SpriteFont, text string, position Vector2, fontSize float32, spacing int32, tint Color) {
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cspriteFont := spriteFont.cptr()
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ctext := C.CString(text)
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defer C.free(unsafe.Pointer(ctext))
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cposition := position.cptr()
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cfontSize := (C.float)(fontSize)
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cspacing := (C.int)(spacing)
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ctint := tint.cptr()
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C.DrawTextEx(*cspriteFont, ctext, *cposition, cfontSize, cspacing, *ctint)
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}
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// Measure string width for default font
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func MeasureText(text string, fontSize int32) int32 {
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ctext := C.CString(text)
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defer C.free(unsafe.Pointer(ctext))
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cfontSize := (C.int)(fontSize)
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ret := C.MeasureText(ctext, cfontSize)
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v := (int32)(ret)
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return v
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}
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// Measure string size for SpriteFont
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func MeasureTextEx(spriteFont SpriteFont, text string, fontSize float32, spacing int32) Vector2 {
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cspriteFont := spriteFont.cptr()
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ctext := C.CString(text)
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defer C.free(unsafe.Pointer(ctext))
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cfontSize := (C.float)(fontSize)
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cspacing := (C.int)(spacing)
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ret := C.MeasureTextEx(*cspriteFont, ctext, cfontSize, cspacing)
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v := NewVector2FromPointer(unsafe.Pointer(&ret))
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return v
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}
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// Shows current FPS
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func DrawFPS(posX int32, posY int32) {
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cposX := (C.int)(posX)
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cposY := (C.int)(posY)
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C.DrawFPS(cposX, cposY)
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}
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