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#include "LUtil.h"
#include <IL/il.h>
#include <IL/ilu.h>
#include "LTexture.h"
int gViewportMode = VIEWPORT_MODE_C;
//Sprite texture
LTexture gArrowTexture;
//Sprite area
LFRect gArrowClips[ 4 ];
bool initGL()
{
//Set the viewport
glViewport( 0.f, 0.f, SCREEN_WIDTH, SCREEN_HEIGHT );
//Initialize Projection Matrix
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glOrtho( 0.0, SCREEN_WIDTH, SCREEN_HEIGHT, 0.0, 1.0, -1.0 );
//Initialize Modelview Matrix
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
//Initialize clear color
glClearColor( 0.f, 0.f, 0.f, 1.f );
//Enable texturing
glEnable( GL_TEXTURE_2D );
//Check for error
GLenum error = glGetError();
if( error != GL_NO_ERROR )
{
printf( "Error initializing OpenGL! %s\n", gluErrorString( error ) );
return false;
}
//Initialize DevIL
ilInit();
ilClearColour( 255, 255, 255, 000 );
//Check for error
ILenum ilError = ilGetError();
if( ilError != IL_NO_ERROR )
{
printf( "Error initializing DevIL! %s\n", iluErrorString( ilError ) );
return false;
}
return true;
}
bool loadMedia()
{
//Set clip rectangles
if ( gViewportMode == VIEWPORT_MODE_C) {
gArrowClips[ 0 ].x = 0.f;
gArrowClips[ 0 ].y = 0.f;
gArrowClips[ 0 ].w = 330.f;
gArrowClips[ 0 ].h = 355.f;
gArrowClips[ 1 ].x = 330.f;
gArrowClips[ 1 ].y = 0.f;
gArrowClips[ 1 ].w = 310.f;
gArrowClips[ 1 ].h = 480.f;
gArrowClips[ 2 ].x = 0.f;
gArrowClips[ 2 ].y = 355.f;
gArrowClips[ 2 ].w = 330.f;
gArrowClips[ 2 ].h = 125.f;
}
else if ( gViewportMode == VIEWPORT_MODE_N) {
gArrowClips[ 0 ].x = 0.f;
gArrowClips[ 0 ].y = 480.f;
gArrowClips[ 0 ].w = 330.f;
gArrowClips[ 0 ].h = 355.f;
gArrowClips[ 1 ].x = 330.f;
gArrowClips[ 1 ].y = 480.f;
gArrowClips[ 1 ].w = 310.f;
gArrowClips[ 1 ].h = 480.f;
gArrowClips[ 2 ].x = 0.f;
gArrowClips[ 2 ].y = 835.f;
gArrowClips[ 2 ].w = 330.f;
gArrowClips[ 2 ].h = 125.f;
}
//Load texture
if( !gArrowTexture.loadTextureFromFile( "SpriteSheet.png" ) )
{
printf( "Unable to load texture!\n" );
return false;
}
return true;
}
void update()
{
}
void render()
{
//Clear color buffer
glClear( GL_COLOR_BUFFER_BIT );
//Render arrows
gArrowTexture.render( 0.f, 0.f, &gArrowClips[ 0 ] );
gArrowTexture.render( SCREEN_WIDTH - gArrowClips[ 1 ].w, 0.f, &gArrowClips[ 1 ] );
gArrowTexture.render( 0.f, SCREEN_HEIGHT - gArrowClips[ 2 ].h, &gArrowClips[ 2 ] );
//Update screen
glutSwapBuffers();
}
void handleKeys( unsigned char key, int x, int y )
{
//If the user presses q
if( key == 'q' )
{
gViewportMode++;
if ( gViewportMode > VIEWPORT_MODE_N )
{
gViewportMode == VIEWPORT_MODE_C;
}
}
}
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