//
// MAIN: Keyboard check example
//
void main(void) {
// 32 bits counter, to let it count passed 65536 (up to 4 Billions)
u32 i;
// Disable firmware to prevent it from interfering with setVideoMode
cpct_disableFirmware();
// Convert palettes from firmware colour values to
// hardware colours (which are used by cpct_setPalette)
cpct_fw2hw(G_banner_palette, 16);
cpct_fw2hw(G_logo_palette, 4);
// Set the border white, using colour 0 from G_banner_palette
// after converting the colours to hardware values
cpct_setBorder(G_banner_palette[0]);
// Infinite main loop
while (1) {
// Draw CPCtelera's Logo and wait for a while
drawLogo();
for(i=0; i < WAITLOOPS; ++i);
// Draw CPCtelera's Banner and wait for a while
drawBanner();
for(i=0; i < WAITLOOPS; ++i);
}
}
void initCPC() {
cpct_disableFirmware();
cpct_fw2hw(g_palette,16);
cpct_fw2hw(g_palette2,16);
cpct_fw2hw(g_palette3,16);
cpct_setPalette(g_palette,16);
cpct_setBorder (g_palette[0]);
cpct_setVideoMode(0);
cpct_akp_musicInit(G_menu);
// cpct_akp_SFXInit (G_menu);
}
//
// EXAMPLE: Measuring free cycles after moving an sprite
//
void main(void) {
u8 i; // Loop index
u8 x=0, y=0; // Sprite coordinates (in bytes)
u8* pvideomem = (u8*)0xC000; // Sprite initial video memory byte location (where it will be drawn)
u16 avc = 0; // Available cycles until next VSYNC, after all main loop calculations
// First, disable firmware to prevent it from intercepting our palette and video mode settings (and,
// at the same time, winning some speed not having to process firmware code at every interrupt)
cpct_disableFirmware();
// Set palette and Screen Border (transform firmware to hardware colours and then set them)
cpct_fw2hw (G_palette, 4);
cpct_setPalette(G_palette, 4);
cpct_setBorder (G_palette[1]);
// Ensure MODE 1 is set
cpct_setVideoMode(1);
// Main Loop
while(1) {
// First, wait VSYNC monitor signal to synchronize the loop with it. We'll start doing
// calculations always at the same time (when VSYNC is first detected)
cpct_waitVSYNC();
// Scan Keyboard and change sprite location if cursor keys are pressed
cpct_scanKeyboard_f();
if (cpct_isKeyPressed(Key_CursorRight) && x < 80 - SPR_W) { x++; pvideomem++; }
else if (cpct_isKeyPressed(Key_CursorLeft) && x > 0 ) { x--; pvideomem--; }
if (cpct_isKeyPressed(Key_CursorUp) && y > 0 ) { pvideomem -= (y-- & 7) ? 0x0800 : 0xC850; }
else if (cpct_isKeyPressed(Key_CursorDown) && y < 200 - SPR_H) { pvideomem += (++y & 7) ? 0x0800 : 0xC850; }
// Draw the sprite at its new location on screen.
// Sprite automatically erases previous copy of itself on the screen because it moves
// 1 byte at a time and has a 0x00 border that overwrites previous colours on that place
cpct_drawSprite(G_death, pvideomem, SPR_W, SPR_H);
// Wait to next VSYNC signal, calculating the amount of free cycles (time we wait for VSYNC)
// As documented on <cpct_count2VSYNC>, function returns number of loop iterations (L), and
// cycles shall be calculated doing 22 + 34*L
avc = 22 + 34 * cpct_count2VSYNC();
// Print 5 digits on the upper right corner of the screen,
// with the amount of free cycles calculated in previous step.
// Digits will be printed at screen locations (0xC046, 0xC048, 0xC04A, 0xC04C, 0xC04E)
for(i=0; i<5; i++) {
u8 digit = '0' + (avc % 10);
cpct_drawCharM1_f((void*)(0xC04E - 2*i), 3, 0, digit);
avc /= 10;
}
}
}
// Initialization of the Amstrad CPC at the start of the application
void initializeCPC() {
// Disable firmware: we dont want it to interfere with our code
cpct_disableFirmware();
// Set the function interruptHandler to be called on each interrupt.
cpct_setInterruptHandler(interruptHandler);
// Set the hardware palette (convert firmware colour values to hardware ones and set the palette)
cpct_fw2hw(G_palette, 16);
cpct_setPalette(G_palette, 16); // Descomentar estas tres lineas cuando tengamos paleta
cpct_setBorder(G_palette[0]);
// Change to Mode 0 (160x200, 16 colours)
cpct_setVideoMode(0);
}
//
// MAIN: Using keyboard to move a sprite example
//
void main(void) {
u8 x=10, y=10; // Sprite coordinates
u8* pvideomem; // Pointer to video memory
//
// Set up the screen
//
// Disable firmware to prevent it from interfering with setPalette and setVideoMode
cpct_disableFirmware();
// Set the colour palette
cpct_fw2hw (G_palette, 4); // Convert our palette from firmware to hardware colours
cpct_setPalette(G_palette, 4); // Set up the hardware palette using hardware colours
// Set video mode 1 (320x200, 4 colours)
cpct_setVideoMode(1);
//
// Infinite moving loop
//
while(1) {
// Scan Keyboard (fastest routine)
// The Keyboard has to be scanned to obtain pressed / not pressed status of
// every key before checking each individual key's status.
cpct_scanKeyboard_f();
// Check if user has pressed a Cursor Key and, if so, move the sprite if
// it will still be inside screen boundaries
if (cpct_isKeyPressed(Key_CursorRight) && x < (SCR_W - SP_W) ) ++x;
else if (cpct_isKeyPressed(Key_CursorLeft) && x > 0 ) --x;
if (cpct_isKeyPressed(Key_CursorUp) && y > 0 ) --y;
else if (cpct_isKeyPressed(Key_CursorDown) && y < (SCR_H - SP_H) ) ++y;
// Get video memory byte for coordinates x, y of the sprite (in bytes)
pvideomem = cpct_getScreenPtr(CPCT_VMEM_START, x, y);
// Draw the sprite in the video memory location got from coordinates x, y
cpct_drawSprite(G_spriteLogoCT, pvideomem, SP_W, SP_H);
}
}
