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main.c
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main.c
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#include <stdlib.h>
#include <stdio.h>
#include "myLib.h"
#include "dot.h"
#include "ghost.h"
#include "title.h"
#include "end.h"
#include "Pacman.h"
#define NUMDOTS 5
#define NUMDELTAS 4
void initialize();
void clear();
void update();
void draw();
void initDot(int i);
void drawDot(int i);
void drawGhost(int x, int y);
void drawTitle();
void drawEnd();
void drawPacman(int x, int y);
void flipPage();
Rect pacman, oldPacman;
DOT dots[NUMDOTS], oldDots[NUMDOTS];
int deltas[] = {2, 3, 4, 5};
int ghostFrequency;
int score;
char string[41];
int main() {
REG_DISPCNT = MODE4 | BG2_ENABLE;
initialize();
while (1) {
waitForVblank();
flipPage();
clear();
update();
draw();
}
}
void flipPage() {
if (REG_DISPCNT & BUFFER1FLAG) {
videoBuffer = BUFFER1;
REG_DISPCNT &= ~BUFFER1FLAG;
} else {
videoBuffer = BUFFER0;
REG_DISPCNT |= BUFFER1FLAG;
}
}
void initialize() {
drawTitle();
setPalette(Pacman_palette, PACMAN_PALETTE_SIZE, PACMAN_PALETTE_OFFSET);
setPalette(ghost_palette, PACMAN_PALETTE_SIZE, GHOST_PALETTE_OFFSET);
DOT emptyDot;
emptyDot.rect.row = 0;
emptyDot.rect.col = 0;
emptyDot.rect.height = 0;
emptyDot.rect.width = 0;
emptyDot.del = 0;
emptyDot.isGhost = 0;
for (int i = 0; i < NUMDOTS; i++)
dots[i] = oldDots[i] = emptyDot;
ghostFrequency = 32;
score = 0;
// Make Pacman and his shadow
pacman.height = pacman.width = 16;
pacman.row = (SCREENHEIGHT-pacman.height-TEXT_HEIGHT)/2;
pacman.col = 0;
// Make dots
for (int i = 0; i < NUMDOTS; i++) {
initDot(i);
drawDot(i);
}
oldPacman = pacman;
for (int i = 0; i < NUMDOTS; i++)
oldDots[i] = dots[i];
}
void clear() {
oldPacman = pacman;
drawRect4(oldPacman.col, oldPacman.row, oldPacman.width, oldPacman.height, BLACKINDEX);
for (int i = 0; i < NUMDOTS; i++) {
oldDots[i] = dots[i];
drawRect4(oldDots[i].rect.col, oldDots[i].rect.row, oldDots[i].rect.width, oldDots[i].rect.height, BLACKINDEX);
}
}
void update() {
if (KEY_DOWN_NOW(BUTTON_SELECT))
main();
sprintf(string, "Score = %d", score);
for (int i = 0; i < NUMDOTS; i++) {
if (rectCollides(dots[i].rect, pacman) || dots[i].rect.col<=0) {
if (dots[i].isGhost && dots[i].rect.col > 0)
drawEnd();
else {
initDot(i);
score++;
}
}
dots[i].rect.col -= dots[i].del;
}
// Move Pacman
if (KEY_DOWN_NOW(BUTTON_DOWN) && pacman.row < SCREENHEIGHT - pacman.height - TEXT_HEIGHT)
pacman.row++;
if (KEY_DOWN_NOW(BUTTON_UP) && pacman.row > 0)
pacman.row--;
if (KEY_DOWN_NOW(BUTTON_LEFT) && pacman.col > 0)
pacman.col--;
if (KEY_DOWN_NOW(BUTTON_RIGHT) && pacman.col < SCREENWIDTH - pacman.width)
pacman.col++;
}
void draw() {
drawPacman(pacman.row, pacman.col);
drawString4(SCREENHEIGHT-TEXT_HEIGHT, 0, string, WHITEINDEX);
for (int i = 0; i < NUMDOTS; i++)
drawDot(i);
}
void initDot(int i) {
if ((rand() % ghostFrequency)) {
dots[i].rect.width = dots[i].rect.height = 4;
dots[i].isGhost = 0;
} else {
dots[i].rect.width = dots[i].rect.height = 16;
dots[i].isGhost = 1;
if (ghostFrequency > 2)
ghostFrequency /= 2;
}
dots[i].rect.row = rand() % (SCREENHEIGHT-dots[i].rect.height-TEXT_HEIGHT);
dots[i].rect.col = SCREENWIDTH - dots[i].rect.width;
dots[i].del = deltas[rand() % NUMDELTAS];
}
void drawDot(int i) {
if (dots[i].isGhost)
drawGhost(dots[i].rect.row, dots[i].rect.col);
else
drawRect4(dots[i].rect.col, dots[i].rect.row, dots[i].rect.width, dots[i].rect.height, WHITEINDEX);
}
void drawGhost(int x, int y) {
drawImage4(x, y, GHOST_WIDTH, GHOST_HEIGHT, ghost);
}
void drawPacman(int x, int y) {
drawImage4(x, y, PACMAN_WIDTH, PACMAN_HEIGHT, Pacman);
}
void drawTitle() {
setPalette(title_palette, TITLE_PALETTE_SIZE, 0);
drawImage4(0, 0, TITLE_WIDTH, TITLE_HEIGHT, title);
while (!KEY_DOWN_NOW(BUTTON_START));
drawRect4(0, 0, SCREENWIDTH, SCREENHEIGHT, BLACKINDEX);
}
void drawEnd() {
setPalette(end_palette, END_PALETTE_SIZE, 0);
drawImage4(0, 0, END_WIDTH, END_HEIGHT, end);
while (!KEY_DOWN_NOW(BUTTON_START));
main();
}