GRRLIB/examples/blending/source/main.c

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/*===========================================
GRRLIB (GX Version)
Example code by Xane
This example shows the different
new blending modes.
============================================*/
#include <grrlib.h>
#include <stdlib.h>
#include <wiiuse/wpad.h>
#include <math.h>
// Include Graphics
#include "RGFX_Background_jpg.h"
#include "RGFX_Blob01_png.h"
#include "RGFX_Blob02_png.h"
#include "RGFX_Blob03_png.h"
#include "RGFX_Font_png.h"
// Declare Static Functions
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static void ExitGame(void);
// Prepare Graphics
GRRLIB_texImg *GFX_Background;
GRRLIB_texImg *GFX_Blob[3];
GRRLIB_texImg *GFX_Font;
int main() {
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// Init Variables
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ir_t P1Mote;
u8 Stage = 0;
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GRRLIB_blendMode Blending = GRRLIB_BLEND_ADD;
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u8 BlobType = 0;
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u8 Color;
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u16 Step = 0;
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// Init GRRLIB & WiiUse
GRRLIB_Init();
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const u16 WinW = rmode->fbWidth;
const u16 WinH = rmode->efbHeight;
WPAD_Init();
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WPAD_SetIdleTimeout( 60 * 10 );
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WPAD_SetDataFormat( WPAD_CHAN_0, WPAD_FMT_BTNS_ACC_IR );
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// Load Textures
GFX_Background = GRRLIB_LoadTextureJPG(RGFX_Background_jpg);
GFX_Blob[0] = GRRLIB_LoadTexturePNG(RGFX_Blob01_png);
GFX_Blob[1] = GRRLIB_LoadTexturePNG(RGFX_Blob02_png);
GFX_Blob[2] = GRRLIB_LoadTexturePNG(RGFX_Blob03_png);
GFX_Font = GRRLIB_LoadTexturePNG(RGFX_Font_png);
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GRRLIB_InitTileSet(GFX_Font, 8, 16, 32);
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// Set Handles
GRRLIB_SetMidHandle( GFX_Blob[0], true );
GRRLIB_SetMidHandle( GFX_Blob[1], true );
GRRLIB_SetMidHandle( GFX_Blob[2], true );
while (true) {
WPAD_ScanPads();
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const u32 WPADKeyDown = WPAD_ButtonsDown(WPAD_CHAN_0);
WPAD_SetVRes(WPAD_CHAN_0, WinW, WinH);
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WPAD_IR(WPAD_CHAN_0, &P1Mote);
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// Wii Remote IR Viewport Correction
int P1MX = P1Mote.sx - 150;
int P1MY = P1Mote.sy - 150;
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// Update Stage
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Step++;
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if (Step == 720) {
Step = 0;
}
float SX = 320 + (sin(DegToRad(Step )) * 250);
float SY = 240 + (cos(DegToRad(Step*3)) * 100);
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// Draw Stage
GRRLIB_DrawImg( 0, 0, GFX_Background, 0, 1, 1, RGBA(255, 255, 255, 255) );
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GRRLIB_SetBlend( Blending );
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switch (Stage) {
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case 2:
Color = 160;
break;
case 3:
Color = 128;
break;
case 4:
Color = 64;
break;
default:
Color = 255;
break;
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}
GRRLIB_DrawImg( SX, SY, GFX_Blob[BlobType], 0, 1, 1, RGBA(Color, Color, Color, 255) );
// IR Pointer
if (P1Mote.state == 1) {
GRRLIB_DrawImg( P1MX, P1MY, GFX_Blob[BlobType], 0, 1, 1, RGBA(Color, Color, Color, 255) );
}
// Draw Text
GRRLIB_SetBlend ( GRRLIB_BLEND_ALPHA );
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GRRLIB_Rectangle( 28, 28, 480 + 16, 76, RGBA(0, 0, 0, 160), true );
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GRRLIB_Printf ( 32, 32, GFX_Font, 0xFFFFFFFF, 1, "Point your WiiMote on the screen." );
GRRLIB_Printf ( 32, 48, GFX_Font, 0xFFFFFFFF, 1, "Press LEFT and RIGHT to switch through the different stages." );
GRRLIB_Printf ( 32, 64, GFX_Font, 0xFFFFFFFF, 1, "Press A to change the blob sprite." );
switch (Stage) {
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case 0:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 1: Additive Blending" );
Blending = GRRLIB_BLEND_ADD;
break;
case 1:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 2: Alpha Light Blending" );
Blending = GRRLIB_BLEND_SCREEN;
break;
case 2:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 3: Multiply Blending (75%%)" );
Blending = GRRLIB_BLEND_MULTI;
break;
case 3:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 4: Multiply Blending (50%%)" );
Blending = GRRLIB_BLEND_MULTI;
break;
case 4:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 5: Multiply Blending (25%%)" );
Blending = GRRLIB_BLEND_MULTI;
break;
case 5:
GRRLIB_Printf( 32, 88, GFX_Font, 0xFFFFFFFF, 1, "Stage 6: Invert Color Blending" );
Blending = GRRLIB_BLEND_INV;
break;
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}
GRRLIB_Render();
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if (WPADKeyDown & WPAD_BUTTON_RIGHT) {
if (Stage < 5) {
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Stage++;
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}
}
if (WPADKeyDown & WPAD_BUTTON_LEFT) {
if (Stage > 0) {
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Stage--;
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}
}
if (WPADKeyDown & WPAD_BUTTON_A) {
BlobType += 1;
if (BlobType > 2) {
BlobType = 0;
}
}
if (WPADKeyDown & WPAD_BUTTON_HOME) {
break;
}
}
ExitGame();
return 0;
}
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static void ExitGame(void) {
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// Free all memory used by textures.
GRRLIB_FreeTexture(GFX_Background);
GRRLIB_FreeTexture(GFX_Blob[0]);
GRRLIB_FreeTexture(GFX_Blob[1]);
GRRLIB_FreeTexture(GFX_Blob[2]);
GRRLIB_FreeTexture(GFX_Font);
// Deinitialize GRRLIB & Video
GRRLIB_Exit();
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// Exit application
exit(0);
}