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main.c
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main.c
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/*
*Copyright (C) 2014 Felipe Alfonso
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <stdio.h>
#include <gb/gb.h>
#include "utils.h"
// assets
#include "assets/flappy.c"
#include "assets/background.c"
#include "assets/background_map.c"
#include "assets/menu.c"
#include "assets/menu_map.c"
#define PLAYER 0
#define SCORE 30
#define H_SCORE 34
#define MAX_VELOC 4
#define TILE_SIZE 8
#define MAX_PIPE_SIZE 8
#define PIPES 6
#define FADE_OUT -1
#define FADE_IN 1
void moveSprite (UINT8 nb, UINT8 x, UINT8 y);
void startShake (WORD intensity, WORD delay);
void updateShake ();
void displayPipeTop ();
void displayPipeBottom ();
void generatePipes ();
void fade(WORD dir);
void renderFlappySprite ();
void updateScore ();
void updateHighScore ();
void displayHighScore ();
void displayScore ();
void resetGame ();
void displayFade ();
void loadBackgroundMap ();
void loadMenu ();
void loadFlappySprite ();
void loadPipes ();
void updateFlappySprite ();
void handleInput ();
void updatePipes ();
void checkCollision ();
void runGame ();
void loadGame ();
WORD flappyX = SCREENWIDTH / 2;
WORD flappyY = SCREENHEIGHT / 2;
WORD acceleY = 1;
WORD velocY = 0;
WORD animDelay = 0;
WORD currentFrame = 0;
BYTE buttonDown = 0;
BYTE dead = 0;
WORD joy = 0;
BYTE showFade = 0;
BYTE fadeState = 0;
WORD fadeDirection = 1;
WORD fadeDelay = 0;
BYTE startGame = 0;
WORD sinIncrem = 0;
WORD waveDelay = 0;
WORD bkgX = 0;
WORD bkgSpeed = 1;
WORD score = 0;
BYTE scoreChecked = 0;
WORD hscore = 0;
BYTE onMenu = 1;
// pipes
WORD pipeX = 80;
WORD pipeTop = 9;
WORD pipeBottom = 1;
// SHAKE
WORD shakeIntesity = 0;
WORD shakeX = 0;
WORD shakeY = 0;
WORD shakeTime = 0;
WORD shakeDelay = 10;
WORD flash = 0;
int main () {
initMath();
loadMenu();
while (1) {
wait_vbl_done();
delay(20);
displayFade();
if (onMenu) {
if (joypad() == J_START && !showFade) {
fade(FADE_OUT);
}
} else {
runGame();
}
}
return 0;
}
void moveSprite (UINT8 nb, UINT8 x, UINT8 y) {
move_sprite(nb, x + (LWORD)shakeX, y + (LWORD)shakeY);
}
void startShake (WORD intensity, WORD delay) {
shakeTime = 10;
shakeIntesity = intensity;
shakeDelay = delay;
}
void updateShake () {
if (shakeTime > 0) {
shakeX = random(shakeIntesity);
shakeY = random(shakeIntesity);
shakeTime--;
if (shakeTime == 0) {
shakeX = 0;
shakeY = 0;
}
}
}
void displayPipeTop () {
moveSprite(PIPES + 2, pipeX, pipeTop * TILE_SIZE + TILE_SIZE);
moveSprite(PIPES + 3, pipeX + TILE_SIZE, pipeTop * TILE_SIZE + TILE_SIZE);
switch (pipeTop) {
case 9:
moveSprite(PIPES + 20, pipeX, TILE_SIZE * 10);
moveSprite(PIPES + 21, pipeX + TILE_SIZE, TILE_SIZE * 10);
case 8:
moveSprite(PIPES + 18, pipeX, TILE_SIZE * 9);
moveSprite(PIPES + 19, pipeX + TILE_SIZE, TILE_SIZE * 9);
case 7:
moveSprite(PIPES + 16, pipeX, TILE_SIZE * 8);
moveSprite(PIPES + 17, pipeX + TILE_SIZE, TILE_SIZE * 8);
case 6:
moveSprite(PIPES + 14, pipeX, TILE_SIZE * 7);
moveSprite(PIPES + 15, pipeX + TILE_SIZE, TILE_SIZE * 7);
case 5:
moveSprite(PIPES + 12, pipeX, TILE_SIZE * 6);
moveSprite(PIPES + 13, pipeX + TILE_SIZE, TILE_SIZE * 6);
case 4:
moveSprite(PIPES + 10, pipeX, TILE_SIZE * 5);
moveSprite(PIPES + 11, pipeX + TILE_SIZE, TILE_SIZE * 5);
case 3:
moveSprite(PIPES + 8, pipeX, TILE_SIZE * 4);
moveSprite(PIPES + 9, pipeX + TILE_SIZE, TILE_SIZE * 4);
case 2:
moveSprite(PIPES + 6, pipeX, TILE_SIZE * 3);
moveSprite(PIPES + 7, pipeX + TILE_SIZE, TILE_SIZE * 3);
case 1:
moveSprite(PIPES + 4, pipeX, TILE_SIZE * 2);
moveSprite(PIPES + 5, pipeX + TILE_SIZE, TILE_SIZE * 2);
}
}
void displayPipeBottom () {
moveSprite(PIPES, pipeX, SCREENHEIGHT - (pipeBottom * TILE_SIZE));
moveSprite(PIPES + 1, pipeX + TILE_SIZE, SCREENHEIGHT - (pipeBottom * TILE_SIZE));
switch (pipeBottom) {
case 9:
moveSprite(PIPES + 6, pipeX, SCREENHEIGHT - TILE_SIZE * 8);
moveSprite(PIPES + 5, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 8);
case 8:
moveSprite(PIPES + 8, pipeX, SCREENHEIGHT - TILE_SIZE * 7);
moveSprite(PIPES + 7, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 7);
case 7:
moveSprite(PIPES + 10, pipeX, SCREENHEIGHT - TILE_SIZE * 6);
moveSprite(PIPES + 9, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 6);
case 6:
moveSprite(PIPES + 12, pipeX, SCREENHEIGHT - TILE_SIZE * 5);
moveSprite(PIPES + 11, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 5);
case 5:
moveSprite(PIPES + 14, pipeX, SCREENHEIGHT - TILE_SIZE * 4);
moveSprite(PIPES + 13, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 4);
case 4:
moveSprite(PIPES + 16, pipeX, SCREENHEIGHT - TILE_SIZE * 3);
moveSprite(PIPES + 15, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 3);
case 3:
moveSprite(PIPES + 18, pipeX, SCREENHEIGHT - TILE_SIZE * 2);
moveSprite(PIPES + 17, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE * 2);
case 2:
moveSprite(PIPES + 20, pipeX, SCREENHEIGHT - TILE_SIZE);
moveSprite(PIPES + 19, pipeX + TILE_SIZE, SCREENHEIGHT - TILE_SIZE);
case 1:
moveSprite(PIPES + 22, pipeX, SCREENHEIGHT);
moveSprite(PIPES + 21, pipeX + TILE_SIZE, SCREENHEIGHT);
}
}
void generatePipes () {
WORD r = randomRange(1, 9);
pipeTop = r;// top
pipeBottom = 10 - r;//bottom
}
void fade(WORD dir) {
fadeDirection = dir;
if (fadeDirection == FADE_OUT) {
fadeState = 3;
} else if (fadeDirection == FADE_IN) {
fadeState = 0;
}
showFade = 1;
fadeDelay = 0;
}
void renderFlappySprite () {
moveSprite(PLAYER, flappyX, flappyY);
moveSprite(PLAYER + 1, flappyX + TILE_SIZE, flappyY);
moveSprite(PLAYER + 2, flappyX + TILE_SIZE, flappyY + TILE_SIZE);
moveSprite(PLAYER + 3, flappyX, flappyY + TILE_SIZE);
if (animDelay > 5 && !dead) {
set_sprite_tile(PLAYER + 3, currentFrame + 3);
currentFrame++;
if (currentFrame > 2) {
currentFrame = 0;
}
animDelay = 0;
}
animDelay++;
}
void updateScore () {
WORD tempScore, i;
i = 0;
tempScore = score;
if (score == 0) {
set_sprite_tile(SCORE, 12);
} else {
while (tempScore) {
set_sprite_tile(SCORE + i, 12 + (tempScore % 10));
tempScore /= 10;
i++;
}
}
}
void updateHighScore () {
WORD tempScore, i;
if (score > hscore) {
hscore = score;
i = 0;
tempScore = hscore;
if (hscore == 0) {
set_sprite_tile(H_SCORE, 12);
} else {
while (tempScore) {
set_sprite_tile(H_SCORE + i, 12 + (tempScore % 10));
tempScore /= 10;
i++;
}
}
}
}
void displayHighScore () {
if (hscore >= 1) {
if (hscore < 10) {
move_sprite(H_SCORE, SCREENWIDTH - TILE_SIZE / 2 + TILE_SIZE / 2, TILE_SIZE * 2 + 2);
move_sprite(H_SCORE + 1, -10, -10);
move_sprite(H_SCORE + 2, -10, -10);
} else if (hscore > 9 && hscore < 100) {
move_sprite(H_SCORE, SCREENWIDTH - TILE_SIZE + TILE_SIZE, TILE_SIZE * 2 + 2);
move_sprite(H_SCORE + 1, SCREENWIDTH - TILE_SIZE + 4 - TILE_SIZE / 2, TILE_SIZE * 2 + 2);
move_sprite(H_SCORE + 2, -10, -10);
} else if (hscore > 99 && hscore < 1000) {
move_sprite(H_SCORE, SCREENWIDTH - TILE_SIZE - 4 + TILE_SIZE + 4, TILE_SIZE * 2 + 2);
move_sprite(H_SCORE + 1, SCREENWIDTH - TILE_SIZE - 4 + 4 - TILE_SIZE / 2 + 4, TILE_SIZE * 2 + 2);
move_sprite(H_SCORE + 2, SCREENWIDTH - TILE_SIZE - TILE_SIZE * 2 + TILE_SIZE, TILE_SIZE * 2 + 2);
}
}
}
void displayScore () {
if (score < 10) {
move_sprite(SCORE, SCREENWIDTH / 2 + TILE_SIZE / 2, 35);
move_sprite(SCORE + 1, -10, -10);
move_sprite(SCORE + 2, -10, -10);
} else if (score > 9 && score < 100) {
move_sprite(SCORE, SCREENWIDTH / 2 + TILE_SIZE, 35);
move_sprite(SCORE + 1, SCREENWIDTH / 2 + 4 - TILE_SIZE / 2, 35);
move_sprite(SCORE + 2, -10, -10);
} else if (score > 99 && score < 1000) {
move_sprite(SCORE, SCREENWIDTH / 2 + TILE_SIZE + 4, 35);
move_sprite(SCORE + 1, SCREENWIDTH / 2 + 4 - TILE_SIZE / 2 + 4, 35);
move_sprite(SCORE + 2, SCREENWIDTH / 2 + 4 - TILE_SIZE * 2 + TILE_SIZE, 35);
} else {
// if score is > 999 will set the score back to 0. Sorry!
score = 0;
}
}
void resetGame () {
updateHighScore();
score = 0;
dead = 0;
acceleY = 1;
scoreChecked = 0;
flappyY = SCREENHEIGHT / 2;
moveSprite(PLAYER + 3 , -10, -10);
moveSprite(PLAYER + 4, -10, -10);
moveSprite(PLAYER + 5, -10, -10);
pipeX = SCREENWIDTH + TILE_SIZE * 10;
displayPipeTop();
displayPipeBottom();
renderFlappySprite();
set_sprite_tile(SCORE, 22);
move_sprite(SCORE, SCREENWIDTH / 2 + TILE_SIZE / 2, 35);
move_sprite(SCORE + 1, -10, -10);
move_sprite(SCORE + 2, -10, -10);
displayHighScore();
fade(FADE_IN);
}
void displayFade () {
if (showFade) {
switch(fadeState) {
case 0:
BGP_REG = 0xFFU;
if (fadeDirection == FADE_OUT && !onMenu) {
resetGame();
} else if (fadeDirection == FADE_OUT && onMenu) {
loadGame();
onMenu = 0;
}
break;
case 1:
BGP_REG = 0xFEU;
break;
case 2:
BGP_REG = 0xF9U;
break;
case 3:
BGP_REG = 0xE4U;
break;
default:
showFade = 0;
}
if (fadeDelay > 2) {
fadeState += fadeDirection;
if (fadeState >= 10) {
showFade = 0;
}
fadeDelay = 0;
}
fadeDelay++;
}
}
void loadBackgroundMap () {
VBK_REG = 1;
set_bkg_data(0, 81, TileData);
set_bkg_tiles(0, 0, 20, 18, MapData);
set_bkg_tiles(12, 0, 20, 18, MapData);
VBK_REG = 0;
}
void loadMenu () {
disable_interrupts();
DISPLAY_OFF;
VBK_REG = 1;
set_bkg_data(0, 183, MENU);
set_bkg_tiles(0, 0, 20, 18, MENU_MAP);
VBK_REG = 0;
enable_interrupts();
DISPLAY_ON;
SHOW_BKG;
}
void loadFlappySprite () {
VBK_REG = 1;
set_sprite_data(0, 23, FLAPPY);
set_sprite_tile(PLAYER, 0);
set_sprite_tile(PLAYER + 1, 1);
set_sprite_tile(PLAYER + 2, 2);
set_sprite_tile(PLAYER + 3, 3);
set_sprite_tile(SCORE, 12);
set_sprite_tile(SCORE + 1, 12);
set_sprite_tile(SCORE + 2, 12);
set_sprite_tile(H_SCORE, 12);
set_sprite_tile(H_SCORE + 1, 12);
set_sprite_tile(H_SCORE + 2, 12);
VBK_REG = 0;
}
void loadPipes () {
VBK_REG = 1;
// top bottom
set_sprite_tile(PIPES, 6);
set_sprite_tile(PIPES + 1, 7);
// top top
set_sprite_tile(PIPES + 2, 10);
set_sprite_tile(PIPES + 3, 11);
// bases
set_sprite_tile(PIPES + 4, 8);
set_sprite_tile(PIPES + 5, 9);
set_sprite_tile(PIPES + 6, 8);
set_sprite_tile(PIPES + 7, 9);
set_sprite_tile(PIPES + 8, 8);
set_sprite_tile(PIPES + 9, 9);
set_sprite_tile(PIPES + 10, 8);
set_sprite_tile(PIPES + 11, 9);
set_sprite_tile(PIPES + 12, 8);
set_sprite_tile(PIPES + 13, 9);
set_sprite_tile(PIPES + 14, 8);
set_sprite_tile(PIPES + 15, 9);
set_sprite_tile(PIPES + 16, 8);
set_sprite_tile(PIPES + 17, 9);
set_sprite_tile(PIPES + 18, 8);
set_sprite_tile(PIPES + 19, 9);
set_sprite_tile(PIPES + 20, 8);
set_sprite_tile(PIPES + 21, 9);
set_sprite_tile(PIPES + 22, 8);
set_sprite_tile(PIPES + 23, 9);
VBK_REG = 0;
}
void updateFlappySprite () {
velocY += acceleY;
if (velocY > MAX_VELOC + 2) {
velocY = MAX_VELOC + 2;
}
flappyY += velocY;
if ((LWORD)flappyY < 0) {
velocY = 0;
dead = 2;
} else if (flappyY > SCREENHEIGHT - TILE_SIZE) {
flappyY = SCREENHEIGHT - TILE_SIZE;
if (dead == 0 || dead == 2) {
velocY = -4;
} else {
velocY = 0;
currentFrame = 0;
startGame = 0;
fade(FADE_OUT);
}
dead = 1;
}
}
void handleInput () {
joy = joypad();
if (dead == 0 && !showFade && startGame) {
if (joy & J_A && !buttonDown) {
velocY -= MAX_VELOC * 3;
if (velocY < -MAX_VELOC * 3) {
velocY = -MAX_VELOC * 3;
}
buttonDown = 1;
} else if (!(joy & J_A)) {
buttonDown = 0;
}
} else if (!startGame && !showFade) {
if (joy == J_A) {
velocY -= MAX_VELOC * 2;
startGame = 1;
buttonDown = 1;
updateScore();
}
}
}
void updatePipes () {
if (dead == 0) {
pipeX--;
if (pipeX < -TILE_SIZE) {
generatePipes();
pipeX = SCREENWIDTH + TILE_SIZE;
scoreChecked = 0;
}
if (flappyX - TILE_SIZE > pipeX && !scoreChecked) {
score++;
updateScore();
scoreChecked = 1;
}
}
}
void checkCollision () {
if (dead == 0) {
if (flappyX > pipeX - TILE_SIZE * 2 && flappyX - TILE_SIZE * 2 < pipeX) {
if (flappyY < pipeTop * (TILE_SIZE) + TILE_SIZE * 2) {
dead = 1;
} else if (flappyY > SCREENHEIGHT - (pipeBottom + 2) * TILE_SIZE) {
dead = 1;
}
if (dead == 1) {
startShake(4, 10);
BGP_REG = 0xF1U;
flash = 1;
}
}
}
}
void runGame () {
if (dead == 0) {
bkgX += bkgSpeed;
}
if (flash == 1) {
BGP_REG = 0xE4U;
flash = 0;
}
handleInput();
if (!showFade && startGame) {
updateFlappySprite();
checkCollision();
updatePipes();
} else if (!startGame && fadeDirection == FADE_IN) {
flappyY = SCREENHEIGHT / 2 + (sin(sinIncrem) * 3) / 1000;
if (waveDelay > 2) {
sinIncrem++;
waveDelay = 0;
}
waveDelay++;
}
renderFlappySprite();
displayPipeTop();
displayPipeBottom();
updateShake();
displayScore();
move_bkg(bkgX + shakeX, shakeY);
}
void loadGame () {
disable_interrupts();
DISPLAY_OFF;
loadFlappySprite();
loadBackgroundMap();
loadPipes();
enable_interrupts();
DISPLAY_ON;
SHOW_SPRITES;
SHOW_BKG;
resetGame();
generatePipes();
}