//Draws all the sprites in the supplied slice
func (sheet SpriteSheet) Draw(sprites []*Sprite) {
gl.Enable(gl.TEXTURE_2D)
sheet.texture.Bind(gl.TEXTURE_2D)
for _, sprite := range sprites {
gl.Begin(gl.TRIANGLE_STRIP)
{
gl.TexCoord2f(sprite.left, sprite.bottom)
gl.Vertex2f(sprite.X, sprite.Y)
gl.TexCoord2f(sprite.left, sprite.top)
gl.Vertex2f(sprite.X, sprite.Y+sprite.H)
gl.TexCoord2f(sprite.right, sprite.bottom)
gl.Vertex2f(sprite.X+sprite.W, sprite.Y)
gl.TexCoord2f(sprite.right, sprite.top)
gl.Vertex2f(sprite.X+sprite.W, sprite.Y+sprite.H)
}
gl.End()
}
sheet.texture.Unbind(gl.TEXTURE_2D)
gl.Disable(gl.TEXTURE_2D)
}
func (t *Texture) PreloadRender() {
t.Bind()
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 1)
gl.Vertex3f(0, 0, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(0, 0, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(0, 0, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(0, 0, 1)
gl.End()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity() // 重置当前矩阵
texture.Bind(gl.TEXTURE_2D)
var x_m, y_m, z_m, u_m, v_m float32
xtrans := -xpos
ztrans := -zpos
ytrans := -walkbias - 0.25
sceneroty := 360.0 - yrot
var numtriangles int
gl.Rotatef(lookupdown, 1.0, 0, 0)
gl.Rotatef(sceneroty, 0, 1.0, 0)
gl.Translatef(xtrans, ytrans, ztrans)
numtriangles = sector1.numtriangles
// Process Each Triangle
for loop_m := 0; loop_m < numtriangles; loop_m++ {
gl.Begin(gl.TRIANGLES)
gl.Normal3f(0.0, 0.0, 1.0)
x_m = sector1.triangles[loop_m].vertex[0].x
y_m = sector1.triangles[loop_m].vertex[0].y
z_m = sector1.triangles[loop_m].vertex[0].z
u_m = sector1.triangles[loop_m].vertex[0].u
v_m = sector1.triangles[loop_m].vertex[0].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
x_m = sector1.triangles[loop_m].vertex[1].x
y_m = sector1.triangles[loop_m].vertex[1].y
z_m = sector1.triangles[loop_m].vertex[1].z
u_m = sector1.triangles[loop_m].vertex[1].u
v_m = sector1.triangles[loop_m].vertex[1].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
x_m = sector1.triangles[loop_m].vertex[2].x
y_m = sector1.triangles[loop_m].vertex[2].y
z_m = sector1.triangles[loop_m].vertex[2].z
u_m = sector1.triangles[loop_m].vertex[2].u
v_m = sector1.triangles[loop_m].vertex[2].v
gl.TexCoord2f(u_m, v_m)
gl.Vertex3f(x_m, y_m, z_m)
gl.End()
}
}
func (cube *Cube) Render() {
x, y, z := cube.Position.X, cube.Position.Y, cube.Position.Z
gl.Begin(gl.QUADS)
gl.Color3d(0.5-(x/50), 0.5-(y/50), 0.5-(z/50))
// Front Side
gl.TexCoord2f(0, 0)
gl.Vertex3d(x-0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 0)
gl.Vertex3d(x+0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 1)
gl.Vertex3d(x+0.5, y+0.5, z+0.5)
gl.TexCoord2f(0, 1)
gl.Vertex3d(x-0.5, y+0.5, z+0.5)
// Left Side
gl.Color3d(0.5-(x/20), 0.5-(y/20), 0.5-(z/20))
gl.TexCoord2f(0, 0)
gl.Vertex3d(x-0.5, y-0.5, z-0.5)
gl.TexCoord2f(1, 0)
gl.Vertex3d(x-0.5, y-0.5, z+0.5)
gl.TexCoord2f(1, 1)
gl.Vertex3d(x-0.5, y+0.5, z+0.5)
gl.TexCoord2f(0, 1)
gl.Vertex3d(x-0.5, y+0.5, z-0.5)
gl.End()
}
func RenderAtlas(a Atlas) {
a.Bind()
xratio := float32(a.Width()) / float32(a.Height())
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-0.5, -0.5, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f((xratio)-0.5, -0.5, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f((xratio)-0.5, 0.5, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-0.5, 0.5, 1)
gl.End()
}
func (t *Texture) Render() {
t.Bind()
xratio := float32(t.width) / float32(t.height)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-0.5, -0.5, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f((xratio)-0.5, -0.5, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f((xratio)-0.5, 0.5, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-0.5, 0.5, 1)
gl.End()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
texture.Bind(gl.TEXTURE_2D)
for loop = 0; loop < num; loop++ {
gl.LoadIdentity() // 绘制每颗星星之前，重置模型观察矩阵
gl.Translatef(0.0, 0.0, zoom) // 深入屏幕里面
gl.Rotatef(tilt, 1.0, 0.0, 0.0) // 倾斜视角
gl.Rotatef(ztilt, 0.0, 0.0, 1.0) // 倾斜视角
gl.Rotatef(star[loop].angle, 0.0, 1.0, 0.0) // 旋转至当前所画星星的角度
gl.Translatef(star[loop].dist, 0.0, 0.0) // 沿X轴正向移动
gl.Rotatef(-star[loop].angle, 0.0, 1.0, 0.0) // 取消当前星星的角度
gl.Rotatef(-ztilt, 0.0, 0.0, 1.0) // 取消屏幕倾斜
gl.Rotatef(-tilt, 1.0, 0.0, 0.0) // 取消屏幕倾斜
if twinkle { // 启用闪烁效果
// 使用byte型数值指定一个颜色
gl.Color4ub(star[(num-loop)-1].r, star[(num-loop)-1].g, star[(num-loop)-1].b, 255)
gl.Begin(gl.QUADS) // 开始绘制纹理映射过的四边形
gl.TexCoord2f(0.0, 0.0)
gl.Vertex3f(-1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 0.0)
gl.Vertex3f(1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 1.0)
gl.Vertex3f(1.0, 1.0, 0.0)
gl.TexCoord2f(0.0, 1.0)
gl.Vertex3f(-1.0, 1.0, 0.0)
gl.End() // 四边形绘制结束
}
gl.Rotatef(spin, 0.0, 0.0, 1.0) // 绕z轴旋转星星
// 使用byte型数值指定一个颜色
gl.Color4ub(star[loop].r, star[loop].g, star[loop].b, 255)
gl.Begin(gl.QUADS) // 开始绘制纹理映射过的四边形
gl.TexCoord2f(0.0, 0.0)
gl.Vertex3f(-1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 0.0)
gl.Vertex3f(1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 1.0)
gl.Vertex3f(1.0, 1.0, 0.0)
gl.TexCoord2f(0.0, 1.0)
gl.Vertex3f(-1.0, 1.0, 0.0)
gl.End() // 四边形绘制结束
spin += 0.01 // 星星的公转
star[loop].angle += float32(loop) / num // 改变星星的自转角度
star[loop].dist -= 0.01 // 改变星星离中心的距离
if star[loop].dist < 0.0 { // 星星到达中心了么
star[loop].dist += 5 // 往外移5个单位
//fmt.Println(loop, star[loop].dist)
star[loop].r = uint8(rand.Int() % 256) // 赋一个新红色分量
star[loop].g = uint8(rand.Int() % 256) // 赋一个新绿色分量
star[loop].b = uint8(rand.Int() % 256) // 赋一个新蓝色分量
}
}
}
func drawQuad(x, y, w, h int, u, v, u2, v2 float32) {
gl.Begin(gl.QUADS)
gl.TexCoord2f(float32(u), float32(v))
gl.Vertex2i(int(x), int(y))
gl.TexCoord2f(float32(u2), float32(v))
gl.Vertex2i(int(x+w), int(y))
gl.TexCoord2f(float32(u2), float32(v2))
gl.Vertex2i(int(x+w), int(y+h))
gl.TexCoord2f(float32(u), float32(v2))
gl.Vertex2i(int(x), int(y+h))
gl.End()
}
func (h *Hex) Render(alpha float32, drawFromCenter bool) {
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
if h.Kind == HexFlower {
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
starTex.Bind(gl.TEXTURE_2D)
} else {
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
hexTex.Bind(gl.TEXTURE_2D)
gl.GetError()
var r, g, b uint8
r = uint8(colors.Colors[h.Kind-1][0])
g = uint8(colors.Colors[h.Kind-1][1])
b = uint8(colors.Colors[h.Kind-1][2])
if alpha < 1 {
gl.Color4ub(r, g, b, uint8(alpha*255))
} else {
gl.Color3ub(r, g, b)
}
}
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
if drawFromCenter {
gl.Vertex2i(HEX_WIDTH/2, HEX_HEIGHT/2)
} else {
gl.Vertex2i(HEX_WIDTH, HEX_HEIGHT)
}
gl.TexCoord2f(0, 1)
if drawFromCenter {
gl.Vertex2i(HEX_WIDTH/2, -HEX_HEIGHT/2)
} else {
gl.Vertex2i(HEX_WIDTH, 0)
}
gl.TexCoord2f(1, 1)
if drawFromCenter {
gl.Vertex2i(-HEX_WIDTH/2, -HEX_HEIGHT/2)
} else {
gl.Vertex2i(0, 0)
}
gl.TexCoord2f(1, 0)
if drawFromCenter {
gl.Vertex2i(-HEX_WIDTH/2, HEX_HEIGHT/2)
} else {
gl.Vertex2i(0, HEX_HEIGHT)
}
gl.End()
}
func (v *Video) Render() {
for running {
select {
case dimensions := <-v.resize:
v.ResizeEvent(dimensions[0], dimensions[1])
case val := <-v.tick:
slice := make([]uint8, len(val)*3)
for i := 0; i < len(val); i = i + 1 {
slice[i*3+0] = (uint8)((val[i] >> 16) & 0xff)
slice[i*3+1] = (uint8)((val[i] >> 8) & 0xff)
slice[i*3+2] = (uint8)((val[i]) & 0xff)
}
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
v.tex.Bind(gl.TEXTURE_2D)
if ppu.OverscanEnabled {
gl.TexImage2D(gl.TEXTURE_2D, 0, 3, 240, 224, 0, gl.RGB, gl.UNSIGNED_BYTE, slice)
} else {
gl.TexImage2D(gl.TEXTURE_2D, 0, 3, 256, 240, 0, gl.RGB, gl.UNSIGNED_BYTE, slice)
}
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0.0, 1.0)
gl.Vertex3f(-1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 1.0)
gl.Vertex3f(1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 0.0)
gl.Vertex3f(1.0, 1.0, 0.0)
gl.TexCoord2f(0.0, 0.0)
gl.Vertex3f(-1.0, 1.0, 0.0)
gl.End()
if v.screen != nil {
sdl.GL_SwapBuffers()
}
v.frametick <- true
}
}
}
func drawHex(x, y, kind int, alpha float32) {
if kind == 6 {
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
starTex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(x, y)
gl.TexCoord2f(0, 1)
gl.Vertex2i(x, y+HEX_HEIGHT)
gl.TexCoord2f(1, 1)
gl.Vertex2i(x+HEX_WIDTH, y+HEX_HEIGHT)
gl.TexCoord2f(1, 0)
gl.Vertex2i(x+HEX_WIDTH, y)
gl.End()
} else {
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
var r, g, b float32
switch kind {
case 0:
r = 1
case 1:
g = 1
case 2:
b = 1
case 3:
r = 1
g = 1
case 4:
r = 1
b = 1
case 5:
g = 1 - 222/255
b = 1
}
hexTex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
if alpha < 1 {
gl.Color4f(r, g, b, alpha)
} else {
gl.Color3f(r, g, b)
}
gl.TexCoord2f(0, 0)
gl.Vertex2i(x, y)
gl.TexCoord2f(0, 1)
gl.Vertex2i(x, y+HEX_HEIGHT)
gl.TexCoord2f(1, 1)
gl.Vertex2i(x+HEX_WIDTH, y+HEX_HEIGHT)
gl.TexCoord2f(1, 0)
gl.Vertex2i(x+HEX_WIDTH, y)
gl.End()
}
}
func TexturedQuad(t *glh.Texture, x, y, w, h int) {
glh.With(t, func() {
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Color4f(255.0, 255.0, 255.0, 1.0)
gl.Begin(gl.TRIANGLE_FAN)
gl.TexCoord2f(0, 0)
gl.Vertex2i(x, y)
gl.TexCoord2f(1, 0)
gl.Vertex2i(x+w, y)
gl.TexCoord2f(1, 1)
gl.Vertex2i(x+w, y+h)
gl.TexCoord2f(0, 1)
gl.Vertex2i(x, y+h)
gl.End()
})
}
func (v *Video) Render(frame []byte, frame_w int, frame_h int) {
gl.Clear(gl.COLOR_BUFFER_BIT)
v.Texture.Bind(gl.TEXTURE_2D)
gl.TexImage2D(gl.TEXTURE_2D, 0, 3, frame_w, frame_h, 0, gl.RGB, gl.UNSIGNED_BYTE, frame)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0.0, 1.0)
gl.Vertex3f(-1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 1.0)
gl.Vertex3f(1.0, -1.0, 0.0)
gl.TexCoord2f(1.0, 0.0)
gl.Vertex3f(1.0, 1.0, 0.0)
gl.TexCoord2f(0.0, 0.0)
gl.Vertex3f(-1.0, 1.0, 0.0)
gl.End()
glfw.SwapBuffers()
}
// texcoord defines vertex texture coordinates.
// Used in classic render mode.
func (a *Attr) texcoord(i int) {
i *= a.size
switch a.size {
case 1:
switch v := a.data.(type) {
case []int16:
gl.TexCoord1s(v[i])
case []int32:
gl.TexCoord1i(int(v[i]))
case []float32:
gl.TexCoord1f(v[i])
case []float64:
gl.TexCoord1d(v[i])
}
case 2:
switch v := a.data.(type) {
case []int16:
gl.TexCoord2s(v[i], v[i+1])
case []int32:
gl.TexCoord2i(int(v[i]), int(v[i+1]))
case []float32:
gl.TexCoord2f(v[i], v[i+1])
case []float64:
gl.TexCoord2d(v[i], v[i+1])
}
case 3:
switch v := a.data.(type) {
case []int16:
gl.TexCoord3s(v[i], v[i+1], v[i+2])
case []int32:
gl.TexCoord3i(int(v[i]), int(v[i+1]), int(v[i+2]))
case []float32:
gl.TexCoord3f(v[i], v[i+1], v[i+2])
case []float64:
gl.TexCoord3d(v[i], v[i+1], v[i+2])
}
case 4:
switch v := a.data.(type) {
case []int16:
gl.TexCoord4s(v[i], v[i+1], v[i+2], v[i+3])
case []int32:
gl.TexCoord4i(int(v[i]), int(v[i+1]), int(v[i+2]), int(v[i+3]))
case []float32:
gl.TexCoord4f(v[i], v[i+1], v[i+2], v[i+3])
case []float64:
gl.TexCoord4d(v[i], v[i+1], v[i+2], v[i+3])
}
}
}
func main() {
err := initGL()
if err != nil {
log.Printf("InitGL: %v", err)
return
}
defer glfw.Terminate()
// Create our texture atlas.
atlas := glh.NewTextureAtlas(AtlasSize, AtlasSize, 4)
defer atlas.Release()
// Fill the altas with image data.
fillAtlas(atlas)
// Display the atlas texture on a quad, so we can see
// what it looks like.
for glfw.WindowParam(glfw.Opened) > 0 {
gl.Clear(gl.COLOR_BUFFER_BIT)
// Bind the atlas texture and render a quad with it.
atlas.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2f(0, 0)
gl.TexCoord2f(1, 0)
gl.Vertex2f(AtlasSize, 0)
gl.TexCoord2f(1, 1)
gl.Vertex2f(AtlasSize, AtlasSize)
gl.TexCoord2f(0, 1)
gl.Vertex2f(0, AtlasSize)
gl.End()
atlas.Unbind(gl.TEXTURE_2D)
glfw.SwapBuffers()
}
}
func drawBorderAtXY(x, y float32, reverse int) {
if x <= 80 || y <= 80 {
return
}
gl.PushMatrix()
gl.Translatef(x, y, 0)
if reverse == 1 {
gl.Rotatef(60, 0, 0, 1)
}
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
borderTex.Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(-38, -38)
gl.TexCoord2f(0, 1)
gl.Vertex2i(-38, 38)
gl.TexCoord2f(1, 1)
gl.Vertex2i(38, 38)
gl.TexCoord2f(1, 0)
gl.Vertex2i(38, -38)
gl.End()
gl.PopMatrix()
}
func (r *RenderTarget) Render(verts []Vertex, primType PrimitiveType, states RenderStates) {
// Nothing to draw?
if len(verts) == 0 {
return
}
// First set the persistent OpenGL states if it's the very first call
if !r.glStatesSet {
r.resetGlStates()
}
// Check if the vertex count is low enough so that we can pre-transform them
useVertexCache := len(verts) <= vertexCacheSize
if useVertexCache {
// Pre-transform the vertices and store them into the vertex cache
for i := 0; i < len(verts); i++ {
r.vpCache[i] = states.Transform.TransformPoint(verts[i].Pos)
r.vcCache[i] = verts[i].Color
r.vtCache[i] = verts[i].TexCoords
}
// Since vertices are transformed, we must use an identity transform to render them
if !r.useVertexCache {
r.applyTransform(IdentityTransform())
}
} else {
r.applyTransform(states.Transform)
}
// Apply the view
if r.viewChanged {
r.applyCurrentView()
}
// Apply the blend mode
if states.BlendMode != r.lastBlendMode {
r.applyBlendMode(states.BlendMode)
}
// Apply the texture
var textureId uint64
if states.Texture != nil {
textureId = states.Texture.cacheId
}
if textureId != r.lastTextureId {
r.applyTexture(states.Texture)
}
// Apply the shader
// TODO
/*if states.shader {
applyShader(states.shader);
}*/
// #########################################
if !useVertexCache {
// Find the OpenGL primitive type
modes := [...]gl.GLenum{gl.POINTS, gl.LINES, gl.LINE_STRIP, gl.TRIANGLES,
gl.TRIANGLE_STRIP, gl.TRIANGLE_FAN, gl.QUADS}
mode := modes[primType]
gl.Begin(mode)
for i, _ := range verts {
gl.TexCoord2f(verts[i].TexCoords.X, verts[i].TexCoords.Y)
gl.Color4f(float32(verts[i].Color.R)/255, float32(verts[i].Color.G)/255,
float32(verts[i].Color.B)/255, float32(verts[i].Color.A)/255)
gl.Vertex2f(verts[i].Pos.X, verts[i].Pos.Y)
}
gl.End()
}
// #########################################
// Setup the pointers to the vertices' components
// ... and if we already used it previously, we don't need to set the pointers again
if useVertexCache {
if !r.useVertexCache {
gl.VertexPointer(2, gl.FLOAT, 0, r.vpCache[:])
gl.ColorPointer(4, gl.UNSIGNED_BYTE, 0, r.vcCache[:])
gl.TexCoordPointer(2, gl.FLOAT, 0, r.vtCache[:])
}
// Find the OpenGL primitive type
modes := [...]gl.GLenum{gl.POINTS, gl.LINES, gl.LINE_STRIP, gl.TRIANGLES,
gl.TRIANGLE_STRIP, gl.TRIANGLE_FAN, gl.QUADS}
mode := modes[primType]
// Draw the primitives
gl.DrawArrays(mode, 0, len(verts))
}
// Unbind the shader, if any
// TODO
/*if (states.shader) {
r.applyShader(nil)
}*/
// Update the cache
r.useVertexCache = useVertexCache
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) /// 清除屏幕及深度缓存
gl.LoadIdentity() /// 重置模型观察矩阵
gl.Translatef(0, 0, -5) /// 并移入屏幕 5.0
gl.Rotatef(rotation[0], 1, 0, 0) ///以x为轴旋转 参数:角度,X,Y,Z
gl.Rotatef(rotation[1], 0, 1, 0)
gl.Rotatef(rotation[2], 0, 0, 1)
rotation[0] += 0.3
rotation[1] += 0.2
rotation[2] += 0.4
/*
选择我们使用的纹理。如果您在您的场景中使用多个纹理，
应该使用来 glBindTexture(GL_TEXTURE_2D, texture[ 所使用纹理对应的数字 ]) 选择要绑定的纹理。
当想改变纹理时，应该绑定新的纹理。有一点值得指出的是，您不能在 glBegin() 和 glEnd() 之间绑定纹理，
必须在 glBegin() 之前或 glEnd() 之后绑定。注意在后面是如何使用 glBindTexture 来指定和绑定纹理的。
*/
textures[0].Bind(gl.TEXTURE_2D) ///选择纹理
/*
为了将纹理正确的映射到四边形上，必须将纹理的右上角映射到四边形的右上角，纹理的左上角映射到四边形的左上角，
纹理的右下角映射到四边形的右下角，纹理的左下角映射到四边形的左下角。
如果映射错误的话，图像显示时可能上下颠倒，侧向一边或者什么都不是。
glTexCoord2f 的第一个参数是X坐标。 0.0f 是纹理的左侧。 0.5f 是纹理的中点， 1.0f 是纹理的右侧。
glTexCoord2f 的第二个参数是Y坐标。 0.0f 是纹理的底部。 0.5f 是纹理的中点， 1.0f 是纹理的顶部。
所以纹理的左上坐标是 X：0.0f，Y：1.0f ，四边形的左上顶点是 X： -1.0f，Y：1.0f 。其余三点依此类推。
*/
gl.Begin(gl.QUADS) ///绘制正方形
gl.TexCoord2f(0, 0) ///前面
gl.Vertex3f(-1, -1, 1) ///左下
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) ///右下
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) ///右上
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) ///左上
gl.TexCoord2d(1, 0) ///后面
gl.Vertex3f(-1, -1, -1) ///右下
gl.TexCoord2d(1, 1)
gl.Vertex3f(-1, 1, -1) ///右上
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, 1, -1) ///左上
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, -1) //左下
gl.TexCoord2d(0, 1) ///上面
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2d(1, 1) ///下面
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(1, 0) ///右面
gl.Vertex3f(1, -1, -1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2d(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2d(0, 0) ///左面
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2d(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2d(1, 1)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2d(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End() ///正方形绘制结束
glfw.SwapBuffers() ///必须交换显示区才能展现
}
func main() {
sys := Make()
sys.Startup()
defer sys.Shutdown()
// InitQueue()
sys.CreateWindow(1024, 768, "Gexic")
gl.ClearColor(1, 1, 1, 0.)
initGL()
prevSelectPos = []int{0, 0, 0}
// PurgeQueue()
// genHexMap()
hexMap2 = GenHexMap()
// for matches := checkHexMap(); len(matches) > 0; matches = checkHexMap() {
// removeHexAndGenNew(matches)
// }
glfw.SetMouseButtonCallback(MouseButtonCallback)
glfw.SetCharCallback(charCallback)
glfw.SetMousePosCallback(MousePosCallback)
currExX = -1
currExY = -1
for sys.CheckExitMainLoop() {
start := glfw.Time()
wait := float64(1) / float64(30)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.BLEND)
gl.Disable(gl.DEPTH_TEST)
// renderHexMap()
wallpaper.Bind(gl.TEXTURE_2D)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(0, 0)
gl.TexCoord2f(0, 1)
gl.Vertex2i(0, 768)
gl.TexCoord2f(1, 1)
gl.Vertex2i(1024, 768)
gl.TexCoord2f(1, 0)
gl.Vertex2i(1024, 0)
gl.End()
hexMap2.Render()
hexRotate.AnimateAndExecute()
hexShrink.AnimateAndExecute()
hexFall.AnimateAndExecute()
if !mouse.locked {
x, y := mouse.GetXY()
hexMap2.CalcClosestCenter(x, y)
}
gl.Flush()
gl.Disable(gl.TEXTURE_2D)
gl.Disable(gl.BLEND)
sys.Refresh()
diff := glfw.Time() - start
if diff < wait {
glfw.Sleep(wait - diff)
}
}
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, z)
gl.Rotatef(rotation[0], 1, 0, 0)
gl.Rotatef(rotation[1], 0, 1, 0)
rotation[0] += speed[0]
rotation[1] += speed[1]
textures[filter].Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
// Front Face
gl.Normal3f(0, 0, 1) // Normal Pointing Towards Viewer
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Point 1 (Front)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Point 2 (Front)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Front)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Point 4 (Front)
// Back Face
gl.Normal3f(0, 0, -1) // Normal Pointing Away From Viewer
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Back)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Point 2 (Back)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Point 3 (Back)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Point 4 (Back)
// Top Face
gl.Normal3f(0, 1, 0) // Normal Pointing Up
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Point 1 (Top)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Point 2 (Top)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Point 3 (Top)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 4 (Top)
// Bottom Face
gl.Normal3f(0, -1, 0) // Normal Pointing Down
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Point 1 (Bottom)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Point 2 (Bottom)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 3 (Bottom)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 4 (Bottom)
// Right face
gl.Normal3f(1, 0, 0) // Normal Pointing Right
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Point 1 (Right)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 2 (Right)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Right)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 4 (Right)
// Left Face
gl.Normal3f(-1, 0, 0) // Normal Pointing Left
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Left)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 2 (Left)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Point 3 (Left)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
glfw.SwapBuffers()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translatef(0, 0, -3.0)
gl.Rotatef(rotx, 1, 0, 0)
gl.Rotatef(roty, 0, 1, 0)
rotx += 0.5
roty += 0.5
texture.Bind(gl.TEXTURE_2D)
gl.Color4f(1, 1, 1, 1)
gl.Begin(gl.QUADS)
gl.Normal3f(0, 0, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1)
gl.Normal3f(0, 0, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1)
gl.Normal3f(0, 1, 0)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.Normal3f(0, -1, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.Normal3f(1, 0, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1)
gl.Normal3f(-1, 0, 0)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
}
// loadFont loads the given font data. This does not deal with font scaling.
// Scaling should be handled by the independent Bitmap/Truetype loaders.
// We therefore expect the supplied image and charset to already be adjusted
// to the correct font scale.
//
// The image should hold a sprite sheet, defining the graphical layout for
// every glyph. The config describes font metadata.
func loadFont(img *image.RGBA, config *FontConfig) (f *Font, err error) {
f = new(Font)
f.config = config
// Resize image to next power-of-two.
img = glh.Pow2Image(img).(*image.RGBA)
ib := img.Bounds()
// Create the texture itself. It will contain all glyphs.
// Individual glyph-quads display a subset of this texture.
f.texture = gl.GenTexture()
f.texture.Bind(gl.TEXTURE_2D)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, ib.Dx(), ib.Dy(), 0,
gl.RGBA, gl.UNSIGNED_BYTE, img.Pix)
// Create display lists for each glyph.
f.listbase = gl.GenLists(len(config.Glyphs))
texWidth := float32(ib.Dx())
texHeight := float32(ib.Dy())
for index, glyph := range config.Glyphs {
// Update max glyph bounds.
if glyph.Width > f.maxGlyphWidth {
f.maxGlyphWidth = glyph.Width
}
if glyph.Height > f.maxGlyphHeight {
f.maxGlyphHeight = glyph.Height
}
// Quad width/height
vw := float32(glyph.Width)
vh := float32(glyph.Height)
// Texture coordinate offsets.
tx1 := float32(glyph.X) / texWidth
ty1 := float32(glyph.Y) / texHeight
tx2 := (float32(glyph.X) + vw) / texWidth
ty2 := (float32(glyph.Y) + vh) / texHeight
// Advance width (or height if we render top-to-bottom)
adv := float32(glyph.Advance)
gl.NewList(f.listbase+uint(index), gl.COMPILE)
{
gl.Begin(gl.QUADS)
{
gl.TexCoord2f(tx1, ty2)
gl.Vertex2f(0, 0)
gl.TexCoord2f(tx2, ty2)
gl.Vertex2f(vw, 0)
gl.TexCoord2f(tx2, ty1)
gl.Vertex2f(vw, vh)
gl.TexCoord2f(tx1, ty1)
gl.Vertex2f(0, vh)
}
gl.End()
switch config.Dir {
case LeftToRight:
gl.Translatef(adv, 0, 0)
case RightToLeft:
gl.Translatef(-adv, 0, 0)
case TopToBottom:
gl.Translatef(0, -adv, 0)
}
}
gl.EndList()
}
err = glh.CheckGLError()
return
}
func (r *RenderTarget) Render(verts []Vertex, primType PrimitiveType, states RenderStates) {
// Nothing to draw?
if len(verts) == 0 {
return
}
// First set the persistent OpenGL states if it's the very first call
if !r.glStatesSet {
r.resetGlStates()
}
// Check if the vertex count is low enough so that we can pre-transform them
// TODO: Fix vertex cache
useVertexCache := /*len(verts) <= vertexCacheSize*/ false
if useVertexCache {
// Pre-transform the vertices and store them into the vertex cache
for i := 0; i < len(verts); i++ {
r.vertexCache[i].Pos = states.Transform.TransformPoint(verts[i].Pos)
r.vertexCache[i].Color = verts[i].Color
r.vertexCache[i].TexCoords = verts[i].TexCoords
}
// Since vertices are transformed, we must use an identity transform to render them
if !r.useVertexCache {
r.applyTransform(IdentityTransform())
}
} else {
r.applyTransform(states.Transform)
}
// Apply the view
if r.viewChanged {
r.applyCurrentView()
}
// Apply the blend mode
if states.BlendMode != r.lastBlendMode {
//r.applyBlendMode(states.BlendMode)
}
// Apply the texture
var textureId uint64
if states.Texture != nil {
textureId = states.Texture.cacheId
}
if textureId != r.lastTextureId {
r.applyTexture(states.Texture)
}
// Apply the shader
// TODO
/*if states.shader {
applyShader(states.shader);
}*/
// If we pre-transform the vertices, we must use our internal vertex cache
if useVertexCache {
// ... and if we already used it previously, we don't need to set the pointers again
if !r.useVertexCache {
verts = r.vertexCache[:]
} else {
verts = nil
}
}
// #########################################
if len(verts) > 0 {
// Find the OpenGL primitive type
modes := [...]gl.GLenum{gl.POINTS, gl.LINES, gl.LINE_STRIP, gl.TRIANGLES,
gl.TRIANGLE_STRIP, gl.TRIANGLE_FAN, gl.QUADS}
mode := modes[primType]
gl.Begin(mode)
for i, _ := range verts {
gl.TexCoord2f(verts[i].TexCoords.X, verts[i].TexCoords.Y)
gl.Color4f(verts[i].Color.R/255, verts[i].Color.G/255,
verts[i].Color.B/255, verts[i].Color.A/255)
gl.Vertex2f(verts[i].Pos.X, verts[i].Pos.Y)
}
gl.End()
}
// #########################################
// Setup the pointers to the vertices' components
/*if len(verts) > 0 {
vData := make([]Vector2, len(verts))
//cData := make([]byte, len(verts))
tData := make([]Vector2, len(verts))
for i, _ := range verts {
vData[i] = verts[i].Pos
//cData[i] = verts[i].Color
tData[i] = verts[i].TexCoords
}
//const char* data = reinterpret_cast<const char*>(vertices);
gl.VertexPointer(2, gl.FLOAT, 0, vData)
//gl.ColorPointer(4, gl.UNSIGNED_BYTE, unsafe.Sizeof(Vertex), cData))
gl.TexCoordPointer(2, gl.FLOAT, 0, tData)
}
// Find the OpenGL primitive type
modes := [...]gl.GLenum{gl.POINTS, gl.LINES, gl.LINE_STRIP, gl.TRIANGLES,
gl.TRIANGLE_STRIP, gl.TRIANGLE_FAN, gl.QUADS}
mode := modes[primType]
// Draw the primitives
gl.DrawArrays(mode, 0, len(verts))*/
// Unbind the shader, if any
// TODO
/*if (states.shader) {
r.applyShader(nil)
}*/
// Update the cache
r.useVertexCache = useVertexCache
}
func (d *DisplayEngine) drawFrame() {
toDraw := make([][]*resources.Bitmap, d.config.MapW*d.config.MapH)
drawPasses := 0
for x := 0; x < d.config.MapW; x++ {
for y := 0; y < d.config.MapH; y++ {
toDraw[x*d.config.MapW+y] = (*d.gameEngine).GetTile(x, y)
length := len(toDraw[x*d.config.MapW+y])
if length > drawPasses {
drawPasses = length
}
}
}
viewport := d.viewport
font := allegro.CreateBuiltinFont()
// Don't want anyone changing the viewport mid frame or any such highjinks
d.Display.SetTargetBackbuffer()
allegro.RunInThread(func() {
r, g, b, a := d.config.BGColor.GetRGBA()
gl.ClearColor(
gl.GLclampf(r)/255.0,
gl.GLclampf(g)/255.0,
gl.GLclampf(b)/255.0,
gl.GLclampf(a)/255.0)
gl.Clear(gl.COLOR_BUFFER_BIT)
viewport.SetupTransform()
for p := 0; p < drawPasses; p++ {
m := d.config.MapW
n := d.config.MapH
for s := 0; s < m+n; s++ {
for x := 0; x < s; x++ {
y := s - x - 1
if x >= m || y < 0 || y >= n {
continue
}
if len(toDraw[x*d.config.MapW+y]) < p {
continue
}
// Coordinates in terms of pixels
px := (y - x) * d.config.TileW / 2
py := (x + y) * d.config.TileH / 2
bmp := toDraw[x*d.config.MapW+y][p]
/* ox := bmp.OffX
oy := bmp.OffY*/
bw, bh := bmp.W, bmp.H
if viewport.OnScreen(px, py, bw, bh) {
gl.Begin(gl.QUADS)
bmp.Tex.Bind(gl.TEXTURE_2D)
gl.TexCoord2f(0, 0)
gl.Vertex3i(px, py, 0)
gl.TexCoord2f(0, 1)
gl.Vertex3i(px, py+bw, 0)
gl.TexCoord2f(1, 1)
gl.Vertex3i(px+bh, py+bw, 0)
gl.TexCoord2f(1, 0)
gl.Vertex3i(px+bh, py, 0)
gl.End()
}
}
}
}
gl.Flush()
})
var trans allegro.Transform
trans.Identity()
trans.Use()
font.Draw(allegro.CreateColor(0, 255, 0, 255), 0, 0, 0, fmt.Sprint(int(d.fps)))
allegro.Flip()
d.frameDrawing.Unlock()
}
func renderHexMap() {
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.BLEND)
gl.Disable(gl.DEPTH_TEST)
wallpaper.Bind(gl.TEXTURE_2D)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.REPLACE)
gl.Begin(gl.QUADS)
gl.TexCoord2f(0, 0)
gl.Vertex2i(0, 0)
gl.TexCoord2f(0, 1)
gl.Vertex2i(0, 768)
gl.TexCoord2f(1, 1)
gl.Vertex2i(1024, 768)
gl.TexCoord2f(1, 0)
gl.Vertex2i(1024, 0)
gl.End()
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.DECAL)
gl.TexEnvf(gl.TEXTURE_ENV, gl.TEXTURE_ENV_MODE, gl.MODULATE)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.PushMatrix()
gl.Translatef(80, 80, 0)
for x := 0; x < 10; x++ {
maxy := 8
topy := 19
if x%2 == 1 {
maxy = 9
topy = 0
}
starty := 0
for y := starty; y < maxy; y++ {
if currExX > -1 && currExY > -1 && starRotate {
if y == currExY && x == currExX || y == currExY+1 && x == currExX || y == currExY-1 && x == currExX || currExX%2 == 0 && ((currExX == x-1 || currExX == x+1) && currExY == y-1 || (currExX == x-1 || currExX == x+1) && currExY == y) || currExX%2 == 1 && ((currExX == x-1 || currExX == x+1) && currExY == y || (currExX == x-1 || currExX == x+1) && currExY == y+1) {
continue
}
} else if timesToRotate > 0 {
// if y == currExY && x == currExX || currExX%2 == 0 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY+1) || currExX%2 == 1 && (x == currExX+1 && y == currExY || x == currExX+1 && y == currExY-1) {
// continue
// }
found := false
for _, v := range selectedHex {
if y == v[1] && x == v[0] {
found = true
break
}
}
if found {
continue
}
}
found := false
for _, v := range currentMatches {
if scale > 0 && v[0] == x && v[1] == y || scale <= 0 && v[0] == x && v[1] >= y {
found = true
break
}
}
for _, v := range starMatches {
if starAlpha > 0 && v[0] == x && v[1] == y || starAlpha <= 0 && v[0] == x && v[1] >= y {
found = true
break
}
}
if found || len(currStarCenter) > 0 && currStarCenter[0] == x && currStarCenter[1] == y {
continue
}
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(x*33, topy+y*38, hexMap[x][y], 1)
}
}
gl.PopMatrix()
if len(currentMatches) > 0 || len(starMatches) > 0 {
mouseLock = true
if len(currentMatches) > 0 && scale > 0 {
scale -= 0.1
for _, v := range currentMatches {
gl.PushMatrix()
topy := 19
if v[0]%2 == 1 {
topy = 0
}
gl.Translatef(float32(v[0]*33+102), float32(v[1]*38+topy+94), 0)
gl.Scalef(scale, scale, 1)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[v[0]][v[1]], 1)
gl.PopMatrix()
}
} else if len(starMatches) > 0 && starAlpha > 0 {
starAlpha -= 0.05
// starAlpha = 0.7
starScale += 0.05
// starScale = 1.4
gl.PushMatrix()
topy := 19
pm := 0
if currStarCenter[0]%2 == 1 {
topy = 0
pm = -1
}
gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
drawHex(-22, -14, 6, 1)
gl.PopMatrix()
gl.PushMatrix()
gl.Translatef(float32(currStarCenter[0]*33+102), float32(currStarCenter[1]*38+topy+94), 0)
gl.Scalef(starScale, starScale, 1)
drawHex(-22, -14-HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]-1], starAlpha)
drawHex(-22, -20+HEX_HEIGHT, hexMap[currStarCenter[0]][currStarCenter[1]+1], starAlpha)
drawHex(-52, -36, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm], starAlpha)
drawHex(-52, -40+HEX_HEIGHT, hexMap[currStarCenter[0]-1][currStarCenter[1]+pm+1], starAlpha)
drawHex(8, -36, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm], starAlpha)
drawHex(8, -40+HEX_HEIGHT, hexMap[currStarCenter[0]+1][currStarCenter[1]+pm+1], starAlpha)
gl.PopMatrix()
} else {
if fallticks == 0 {
animateFall = make([]*freefall, 0)
for x := 0; x < 10; x++ {
topy := 19
if x%2 == 1 {
topy = 0
}
fromy := -1
for _, v := range currentMatches {
if v[0] != x {
continue
}
if v[1] > fromy {
fromy = v[1]
}
}
for _, v := range starMatches {
if v[0] != x {
continue
}
if v[1] > fromy {
fromy = v[1]
}
}
if fromy == -1 {
continue
}
for y := fromy; y >= 0; y-- {
found := false
for _, v := range currentMatches {
if v[0] == x && v[1] == y {
found = true
break
}
}
for _, v := range starMatches {
if v[0] == x && v[1] == y {
found = true
break
}
}
if found {
continue
}
animateFall = append(animateFall, &freefall{x, y, getFallTargetY(x, y), math.Pow(float64(y), 2)/16 + 0.5})
gl.PushMatrix()
gl.Translatef(float32(x*33+102), float32(y*38+topy+94), 0)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[x][y], 1)
gl.PopMatrix()
}
}
fallticks++
} else {
stillFalling := 0
for _, v := range animateFall {
topy := 19
if v.x%2 == 1 {
topy = 0
}
newy := v.accel * math.Pow(float64(fallticks), 2) / 2
gl.PushMatrix()
gl.Translatef(float32(v.x*33+102), float32(math.Min(float64(v.y*38+topy+94)+newy, float64(v.targetY*38+topy+94))), 0)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
drawHex(-22, -14, hexMap[v.x][v.y], 1)
gl.PopMatrix()
if float64(v.y*38+topy+94)+newy < float64(v.targetY*38+topy+94) {
stillFalling++
}
}
fallticks++
if stillFalling == 0 {
starScale = 1
starAlpha = 0
removeHexAndGenNew(currentMatches)
makeStarAndGenNew(starMatches)
currentMatches = checkHexMap()
starMatches = checkHexStar()
currStarCenter = []int{}
scale = 1
fallticks = 0
mouseLock = false
fmt.Println("Mouse unlocked 1")
animateFall = nil
}
}
}
}
if currExX > -1 && currExY > -1 {
gl.PushMatrix()
topy := 19
if currExX%2 == 1 {
topy = 0
}
if starRotate {
timesToRotate = 0
gl.Translatef(float32(currExX*33+102), float32(currExY*38+topy+94), 0)
gl.Scalef(1.3, 1.3, 1)
gl.Rotatef(rotate, 0, 0, 1)
drawHex(-22, -14, 6, 1)
drawHex(-22, -14-HEX_HEIGHT, hexMap[currExX][currExY-1], 1)
drawHex(-22, -20+HEX_HEIGHT, hexMap[currExX][currExY+1], 1)
pm := 0
if currExX%2 == 1 {
pm = -1
}
drawHex(-52, -36, hexMap[currExX-1][currExY+pm], 1)
drawHex(-52, -40+HEX_HEIGHT, hexMap[currExX-1][currExY+pm+1], 1)
drawHex(8, -36, hexMap[currExX+1][currExY+pm], 1)
drawHex(8, -40+HEX_HEIGHT, hexMap[currExX+1][currExY+pm+1], 1)
} else {
// gl.Translatef(float32(currExX*33+HEX_WIDTH+80), float32(currExxY*38+topy+20+80), 0)
gl.Translatef(float32(prevSelectPos[0]), float32(prevSelectPos[1]), 0)
gl.Scalef(1.3, 1.3, 1)
gl.Rotatef(rotate, 0, 0, 1)
for _, v := range selectedHex {
switch v[2] {
case 1:
drawHex(-32, -34, hexMap[v[0]][v[1]], 1)
case 2:
drawHex(0, -17, hexMap[v[0]][v[1]], 1)
case 3:
drawHex(-32, 0, hexMap[v[0]][v[1]], 1)
case 4:
drawHex(-44, -19, hexMap[v[0]][v[1]], 1)
case 5:
drawHex(-12, -36, hexMap[v[0]][v[1]], 1)
case 6:
drawHex(-12, -2, hexMap[v[0]][v[1]], 1)
}
}
// if currExX%2 == 0 {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -36, hexMap[currExX+1][currExY], 1)
// } else {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -36, hexMap[currExX+1][currExY-1], 1)
// }
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-44, -19, hexMap[currExX][currExY], 1)
// if currExX%2 == 0 {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -2, hexMap[currExX+1][currExY+1], 1)
// } else {
// gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
// drawHex(-12, -2, hexMap[currExX+1][currExY], 1)
// }
}
gl.PopMatrix()
if !starRotate && rotate < 120 {
rotate += 15
// rotate = 15
} else if starRotate && rotate < 60 {
rotate += 6
} else {
if starRotate {
if currExX%2 == 0 {
hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1], hexMap[currExX-1][currExY] = hexMap[currExX-1][currExY], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX+1][currExY+1], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY+1]
} else {
hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY], hexMap[currExX-1][currExY-1] = hexMap[currExX-1][currExY-1], hexMap[currExX][currExY-1], hexMap[currExX+1][currExY-1], hexMap[currExX+1][currExY], hexMap[currExX][currExY+1], hexMap[currExX-1][currExY]
}
} else {
v2 := make([][]int, 3)
for _, v := range selectedHex {
idx := 0
switch v[2] {
case 1, 4:
idx = 0
case 2, 5:
idx = 1
case 3, 6:
idx = 2
}
v2[idx] = []int{v[0], v[1]}
fmt.Println(idx, v[0], v[1])
}
hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]], hexMap[v2[2][0]][v2[2][1]] = hexMap[v2[2][0]][v2[2][1]], hexMap[v2[0][0]][v2[0][1]], hexMap[v2[1][0]][v2[1][1]]
}
starMatches = checkHexStar()
if len(starMatches) > 6 {
fmt.Println(starMatches)
}
if len(starMatches) >= 6 {
timesToRotate = 0
rotate = 0
currExX = -1
currExY = -1
starScale = 1
starAlpha = 1
starRotate = false
currStarCenter = getStarCenter(starMatches)
hexMap[currStarCenter[0]][currStarCenter[1]] = 6
// makeStarAndGenNew(starMatches)
} else {
matches := checkHexMap()
if len(matches) > 0 {
currentMatches = matches
scale = 1
currExX = -1
currExY = -1
rotate = 0
timesToRotate = 0
starRotate = false
} else {
if timesToRotate == 0 {
currExX = -1
currExY = -1
rotate = 0
timesToRotate = 0
starRotate = false
mouseLock = false
fmt.Println("Mouse unlocked 3")
}
rotate = 0
timesToRotate--
}
}
}
}
if !mouseLock {
prevSelectPos = calcClosestCenter(posX, posY)
drawBorderAtXY(float32(prevSelectPos[0]), float32(prevSelectPos[1]), prevSelectPos[2])
}
gl.Flush()
gl.Disable(gl.TEXTURE_2D)
gl.Disable(gl.BLEND)
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT) //清除屏幕和深度缓存
gl.LoadIdentity() //重置当前的模型观察矩阵
gl.Translatef(0, 0, z) //移入/移出屏幕 z 个单位
gl.Rotatef(rotation[0], 1, 0, 0) //绕X轴旋转
gl.Rotatef(rotation[1], 0, 1, 0) //绕Y轴旋转
rotation[0] += speed[0]
rotation[1] += speed[1]
textures[filter].Bind(gl.TEXTURE_2D) //绑定的纹理
/*
Normal就是法线的意思，所谓法线是指经过面(多边形）上的一点且垂直于这个面(多边形)的直线。
使用光源的时候必须指定一条法线。法线告诉OpenGL这个多边形的朝向，并指明多边形的正面和背面。
如果没有指定法线，什么怪事情都可能发生：不该照亮的面被照亮了，多边形的背面也被照亮....。对了，法线应该指向多边形的外侧。
看着木箱的前面您会注意到法线与Z轴正向同向。这意味着法线正指向观察者－您自己。这正是我们所希望的。
对于木箱的背面，也正如我们所要的，法线背对着观察者。
如果立方体沿着X或Y轴转个180度的话，前侧面的法线仍然朝着观察者，背面的法线也还是背对着观察者。
换句话说，不管是哪个面，只要它朝着观察者这个面的法线就指向观察者。由于光源紧邻观察者，任何时候法线对着观察者时，这个面就会被照亮。
并且法线越朝着光源，就显得越亮一些。如果您把观察点放到立方体内部，你就会法线里面一片漆黑。因为法线是向外指的。
如果立方体内部没有光源的话，当然是一片漆黑。
*/
gl.Begin(gl.QUADS)
// Front Face 前面
gl.Normal3f(0, 0, 1) // Normal Pointing Towards Viewer 法线指向观察者
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Point 1 (Front)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Point 2 (Front)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Front)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Point 4 (Front)
// Back Face 后面
gl.Normal3f(0, 0, -1) // Normal Pointing Away From Viewer 法线背向观察者
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Back)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Point 2 (Back)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Point 3 (Back)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Point 4 (Back)
// Top Face 顶面
gl.Normal3f(0, 1, 0) // Normal Pointing Up 法线向上
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Point 1 (Top)
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Point 2 (Top)
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Point 3 (Top)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 4 (Top)
// Bottom Face 底面
gl.Normal3f(0, -1, 0) // Normal Pointing Down 法线朝下
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Point 1 (Bottom)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Point 2 (Bottom)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 3 (Bottom)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 4 (Bottom)
// Right face 右面
gl.Normal3f(1, 0, 0) // Normal Pointing Right 法线朝右
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Point 1 (Right)
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Point 2 (Right)
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Point 3 (Right)
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Point 4 (Right)
// Left Face 左面
gl.Normal3f(-1, 0, 0) // Normal Pointing Left 法线朝左
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Point 1 (Left)
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Point 2 (Left)
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Point 3 (Left)
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1)
gl.End()
glfw.SwapBuffers()
}
func drawScene() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
gl.LoadIdentity()
gl.Translatef(0, 0, -5)
gl.Rotatef(rotation[0], 1, 0, 0)
gl.Rotatef(rotation[1], 0, 1, 0)
gl.Rotatef(rotation[2], 0, 0, 1)
rotation[0] += 0.3
rotation[1] += 0.2
rotation[2] += 0.4
textures[0].Bind(gl.TEXTURE_2D)
gl.Begin(gl.QUADS)
// Front Face
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, 1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, 1) // Top Left Of The Texture and Quad
// Back Face
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, -1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, -1) // Bottom Left Of The Texture and Quad
// Top Face
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, 1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, 1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Top Right Of The Texture and Quad
// Bottom Face
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, -1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, -1, -1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Right Of The Texture and Quad
// Right face
gl.TexCoord2f(1, 0)
gl.Vertex3f(1, -1, -1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(1, 1, -1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(1, 1, 1) // Top Left Of The Texture and Quad
gl.TexCoord2f(0, 0)
gl.Vertex3f(1, -1, 1) // Bottom Left Of The Texture and Quad
// Left Face
gl.TexCoord2f(0, 0)
gl.Vertex3f(-1, -1, -1) // Bottom Left Of The Texture and Quad
gl.TexCoord2f(1, 0)
gl.Vertex3f(-1, -1, 1) // Bottom Right Of The Texture and Quad
gl.TexCoord2f(1, 1)
gl.Vertex3f(-1, 1, 1) // Top Right Of The Texture and Quad
gl.TexCoord2f(0, 1)
gl.Vertex3f(-1, 1, -1) // Top Left Of The Texture and Quad
gl.End()
glfw.SwapBuffers()
}