private void initShader() throws Exception {
String vertexShaderSource =
ResourceUtil.getResourceFileAsString("/shader/screenQuadVert.glsl", this.getClass());
String fragmentShaderSource =
ResourceUtil.getResourceFileAsString("/shader/screenQuadFrag.glsl", this.getClass());
uiShader = ShaderProgram.buildProgram(vertexShaderSource, fragmentShaderSource);
GLHelper.checkAndThrow();
}
public void onDraw(double elapsedMillis, GameArena arena, Level gameLevel) {
glPushAttrib(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_ENABLE_BIT);
glDisable(GL_DEPTH_TEST);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
drawPlayerIcons(gameLevel.getPlayer(), elapsedMillis);
drawLabels(elapsedMillis, arena, gameLevel);
GLHelper.checkAndThrow();
glPopAttrib();
}
public void init() {
try {
initVertexBuffer();
initShader();
initTextures();
font = new TrueTypeFont("font/computer_pixel-7.ttf", 42f);
fontBig = new TrueTypeFont("font/computer_pixel-7.ttf", 80f);
font.init();
fontBig.init();
} catch (Exception e) {
log.error("Initialization failed!", e);
}
GLHelper.checkAndThrow();
}
private void initVertexBuffer() {
float[] position = {
// Left bottom triangle
-1f,
1f,
0f,
-1f,
-1f,
0f,
1f,
-1f,
0f,
// Right top triangle
1f,
-1f,
0f,
1f,
1f,
0f,
-1f,
1f,
0f
};
float[] texCoord = {
// Left bottom triangle
0f, 1f,
0f, 0f,
1f, 0f,
// Right top triangle
1f, 0f,
1f, 1f,
0f, 1f
};
VertexBufferObject quadPosVbo = VertexBufferObject.create(position);
quadPosVbo.addAttribBinding(new VertexAttribBinding(VertexAttribBinding.POSITION_INDEX, 3));
VertexBufferObject quadTexVbo = VertexBufferObject.create(texCoord);
quadTexVbo.addAttribBinding(new VertexAttribBinding(VertexAttribBinding.TEX_COORD_INDEX, 2));
quadVao = VertexArrayObject.create(Arrays.asList(quadPosVbo, quadTexVbo));
GLHelper.checkAndThrow();
}
private void initTextures() throws Exception {
textureCache = new TextureCache();
playerTexture = textureCache.get("/textures/ufoBlue.png");
GLHelper.checkAndThrow();
}