#include "input.h"
#include "gba.h"
#include "sprite.h"
+#include "timer.h"
#include "debug.h"
#include "voxscape.h"
#include "data.h"
#define NEAR 2
#define FAR 85
+#define P_RATE 250
+#define E_RATE 250
+#define SHOT_TIME 50
+
static int gamescr_start(void);
static void gamescr_stop(void);
static void gamescr_frame(void);
static void gamescr_vblank(void);
-static void update(void);
+static int update(void);
static void draw(void);
static struct screen gamescr = {
gamescr_vblank
};
+struct enemy {
+ struct vox_object vobj;
+ short hp;
+ short anm;
+ int last_shot;
+};
+#define ENEMY_VALID(e) ((e)->anm != 0)
+
static uint16_t *framebuf;
static int nframes, backbuf;
static uint16_t *vram[] = { gba_vram_lfb0, gba_vram_lfb1 };
static int32_t pos[2], angle, horizon = 80;
-static struct voxscape *vox;
+static long last_shot;
#define COLOR_HORIZON 192
#define COLOR_ZENITH 255
static uint16_t oam[4 * MAX_SPR];
static int dynspr_base, dynspr_count;
-static int num_tur, total_tur;
+
+#define MAX_ENEMIES (255 - CMAP_SPAWN0)
+struct enemy enemies[MAX_ENEMIES];
+int num_kills, total_enemies;
static int energy;
#define MAX_ENERGY 5
+#define ENEMY_ENERGY 4
+
+
+#define XFORM_PIXEL_X(x, y) (xform_ca * (x) - xform_sa * (y) + (120 << 8))
+#define XFORM_PIXEL_Y(x, y) (xform_sa * (x) + xform_ca * (y) + (80 << 8))
+static int32_t xform_sa, xform_ca; /* for viewport bank/zoom */
+static int xform_s;
+
+static short vblcount;
+static void *prev_iwram_top;
+
+
+static inline void xform_pixel(int *xp, int *yp);
+
+
struct screen *init_game_screen(void)
{
return &gamescr;
}
+static void setup_palette(void)
+{
+ int i;
+ unsigned char *cmap = gba_colors ? color_gba_cmap : color_cmap;
+
+ emuprint("setting up %s palette", gba_colors ? "GBA" : "NDS/Emu");
+
+ for(i=0; i<256; i++) {
+ int r = cmap[i * 3];
+ int g = cmap[i * 3 + 1];
+ int b = cmap[i * 3 + 2];
+ gba_bgpal[i] = RGB555(r, g, b);
+ }
+}
+
static int gamescr_start(void)
{
- int i, sidx;
+ int i, j, sidx;
+ uint8_t *cptr;
+ struct enemy *enemy;
+
+ prev_iwram_top = iwram_sbrk(0);
gba_setmode(4, DISPCNT_BG2 | DISPCNT_OBJ | DISPCNT_FB1);
+ fillblock_16byte(gba_vram_lfb1, 0, 240 * 160 / 16);
vblperf_setcolor(0);
pos[0] = pos[1] = VOX_SZ << 15;
+ angle = 0x8000;
+ last_shot = -P_RATE - 1;
- if(!(vox = vox_create(VOX_SZ, VOX_SZ, height_pixels, color_pixels))) {
- panic(get_pc(), "vox_create");
- }
- vox_proj(vox, FOV, NEAR, FAR);
- vox_view(vox, pos[0], pos[1], -40, angle);
+ vox_init(VOX_SZ, VOX_SZ, height_pixels, color_pixels);
+ vox_proj(FOV, NEAR, FAR);
+ vox_view(pos[0], pos[1], -40, angle);
/* setup color image palette */
- for(i=0; i<256; i++) {
- int r = color_cmap[i * 3];
- int g = color_cmap[i * 3 + 1];
- int b = color_cmap[i * 3 + 2];
- gba_bgpal[i] = (((uint16_t)b << 7) & 0x7c00) | (((uint16_t)g << 2) & 0x3e0) | (((uint16_t)r >> 3) & 0x1f);
- }
- /*
- intr_disable();
- interrupt(INTR_HBLANK, hblank);
- REG_DISPSTAT |= DISPSTAT_IEN_HBLANK;
- unmask(INTR_HBLANK);
- intr_enable();
- */
+ setup_palette();
spr_setup(16, 16, spr_game_pixels, spr_game_cmap);
wait_vblank();
spr_oam(oam, sidx++, SPRID_UISLASH, 216, 144, SPR_VRECT | SPR_256COL);
dynspr_base = sidx;
- wait_vblank();
- dma_copy32(3, (void*)OAM_ADDR, oam, sidx * 2, 0);
-
- num_tur = 0;
- total_tur = 16;
+ num_kills = total_enemies = 0;
energy = 5;
+ memset(enemies, 0, sizeof enemies);
+ cptr = color_pixels;
+ for(i=0; i<VOX_SZ; i++) {
+ for(j=0; j<VOX_SZ; j++) {
+ if(*cptr == 255) {
+ /* player spawn point */
+ pos[0] = j << 16;
+ pos[1] = i << 16;
+
+ } else if(*cptr >= CMAP_SPAWN0 && *cptr != 255) {
+ /* enemy spawn point */
+ int idx = *cptr - CMAP_SPAWN0;
+ enemy = enemies + idx;
+ if(enemy->anm) {
+ panic(get_pc(), "double spawn %d at %d,%d (prev: %d,%d)", idx,
+ j, i, enemy->vobj.x, enemy->vobj.y);
+ }
+ enemy->vobj.x = j;
+ enemy->vobj.y = i;
+ enemy->vobj.px = -1;
+ enemy->anm = 0xff;
+ enemy->hp = ENEMY_ENERGY;
+ enemy->last_shot = timer_msec > E_RATE ? timer_msec - E_RATE : 0;
+ if(++total_enemies >= MAX_ENEMIES) {
+ goto endspawn;
+ }
+ }
+ cptr++;
+ }
+ }
+endspawn:
+ /* check continuity */
+ for(i=0; i<total_enemies; i++) {
+ if(enemies[i].anm <= 0) {
+ panic(get_pc(), "discontinuous enemy list");
+ }
+ enemies[i].anm = rand() & 7;
+ }
+
+ vox_objects((struct vox_object*)enemies, total_enemies, sizeof *enemies);
+
+ energy = MAX_ENERGY;
+ xform_sa = 0;
+ xform_ca = 0x10000;
+ xform_s = 0x100;
+
+ vblcount = 0;
nframes = 0;
return 0;
}
static void gamescr_stop(void)
{
- /*mask(INTR_HBLANK);*/
+ iwram_brk(prev_iwram_top);
+
+ wait_vblank();
+ /* clear sprites */
+ spr_clear();
+ /* reset background rot/scale state */
+ REG_BG2X = 0;
+ REG_BG2Y = 0;
+ REG_BG2PA = 0x100;
+ REG_BG2PB = 0;
+ REG_BG2PC = 0;
+ REG_BG2PD = 0x100;
+
}
static void gamescr_frame(void)
backbuf = ++nframes & 1;
framebuf = vram[backbuf];
- vox_framebuf(vox, 240, 160, framebuf, horizon);
+ vox_framebuf(240, 160, framebuf, horizon);
- update();
+ if(update() == -1) {
+ return;
+ }
draw();
vblperf_end();
#define TURN_SPEED 0x200
#define ELEV_SPEED 8
-static void update(void)
+static int update(void)
{
int32_t fwd[2], right[2];
int i, snum, ledspr;
+ struct enemy *enemy;
update_keyb();
- if(KEYPRESS(BN_SELECT)) {
- vox_quality ^= 1;
+ if(KEYPRESS(BN_START)) {
+ /* TODO pause menu */
+ change_screen(find_screen("menu"));
+ return -1;
}
if(keystate) {
pos[0] += fwd[0];
pos[1] += fwd[1];
}
- /*
- if(keystate & BN_DOWN) {
- pos[0] -= fwd[0];
- pos[1] -= fwd[1];
+
+ if((keystate & BN_B) && (timer_msec - last_shot >= P_RATE)) {
+ last_shot = timer_msec;
+ for(i=0; i<total_enemies; i++) {
+ if(enemies[i].hp && enemies[i].vobj.px >= 0) {
+ int dx = enemies[i].vobj.px - 120;
+ int dy = enemies[i].vobj.py - 80;
+ int rad = enemies[i].vobj.scale >> 5;
+
+ /*emuprint("rad: %d (%d,%d)", rad, enemies[i].vobj.px, enemies[i].vobj.py);*/
+ if(rad < 1) rad = 1;
+
+ if(abs(dx) < rad && abs(dy) < (rad << 1)) {
+ enemies[i].hp--;
+ break;
+ }
+ }
+ }
}
- */
if(keystate & BN_UP) {
if(horizon > 40) horizon -= ELEV_SPEED;
}
pos[1] -= right[1];
}
- vox_view(vox, pos[0], pos[1], -40, angle);
+ vox_view(pos[0], pos[1], -40, angle);
}
snum = 0;
/* turrets number */
- spr_oam(oam, dynspr_base + snum++, numspr[num_tur][0], 200, 144, SPR_VRECT | SPR_256COL);
- spr_oam(oam, dynspr_base + snum++, numspr[num_tur][1], 208, 144, SPR_VRECT | SPR_256COL);
- spr_oam(oam, dynspr_base + snum++, numspr[total_tur][0], 224, 144, SPR_VRECT | SPR_256COL);
- spr_oam(oam, dynspr_base + snum++, numspr[total_tur][1], 232, 144, SPR_VRECT | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, numspr[num_kills][0], 200, 144, SPR_VRECT | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, numspr[num_kills][1], 208, 144, SPR_VRECT | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, numspr[total_enemies][0], 224, 144, SPR_VRECT | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, numspr[total_enemies][1], 232, 144, SPR_VRECT | SPR_256COL);
/* energy bar */
if(energy == MAX_ENERGY) {
ledspr = SPRID_LEDBLU;
8 + (i << 3), 144, SPR_VRECT | SPR_256COL);
}
/* enemy sprites */
- spr_oam(oam, dynspr_base + snum++, SPRID_ENEMY, 50, 50, SPR_VRECT | SPR_SZ64 | SPR_256COL);
+ /*spr_oam(oam, dynspr_base + snum++, SPRID_ENEMY, 50, 50, SPR_VRECT | SPR_SZ64 | SPR_256COL);*/
+ enemy = enemies;
+ for(i=0; i<total_enemies; i++) {
+ int sid, anm, px, py, yoffs;
+ unsigned int flags;
+ int16_t mat[4];
+ int32_t sa, ca, scale;
+
+ if(enemy->vobj.px >= 0) {
+ flags = SPR_DBLSZ | SPR_256COL | SPR_ROTSCL | SPR_ROTSCL_SEL(0);
+ if(enemies->hp > 0) {
+ anm = (enemies->anm + (vblcount >> 3)) & 0xf;
+ sid = SPRID_ENEMY0 + ((anm & 7) << 2);
+ flags |= SPR_SZ32 | SPR_VRECT;
+ yoffs = 32;
+ } else {
+ anm = 0;
+ sid = SPRID_HUSK;
+ flags |= SPR_SZ16;
+ yoffs = 16;
+ }
+
+ px = enemy->vobj.px - 120;
+ py = enemy->vobj.py - 80;
+ xform_pixel(&px, &py);
+
+ spr_oam(oam, dynspr_base + snum++, sid, px - 16, py - yoffs, flags);
+
+ scale = enemy->vobj.scale;
+ if(scale > 0x10000) scale = 0x10000;
+ sa = xform_sa / scale;
+ ca = xform_ca / scale;
+ mat[0] = anm >= 8 ? -ca : ca;
+ mat[1] = sa;
+ mat[2] = -sa;
+ mat[3] = ca;
+
+ spr_transform(oam, 0, mat);
+ enemy->vobj.px = -1;
+ }
+ enemy++;
+ }
+ if(timer_msec - last_shot <= SHOT_TIME) {
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS0, -8, 118, SPR_SZ32 | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS1, 22, 103, SPR_SZ32 | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS2, 54, 88, SPR_SZ32 | SPR_256COL);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS3, 86, 72, SPR_SZ32 | SPR_256COL);
+
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS0, 240 + 8 - 32, 118, SPR_SZ32 | SPR_256COL | SPR_HFLIP);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS1, 240 - 22 - 32, 103, SPR_SZ32 | SPR_256COL | SPR_HFLIP);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS2, 240 - 54 - 32, 88, SPR_SZ32 | SPR_256COL | SPR_HFLIP);
+ spr_oam(oam, dynspr_base + snum++, SPRID_LAS3, 240 - 86 - 32, 72, SPR_SZ32 | SPR_256COL | SPR_HFLIP);
+ }
+ for(i=snum; i<dynspr_count; i++) {
+ spr_oam_clear(oam, dynspr_base + i);
+ }
mask(INTR_VBLANK);
dynspr_count = snum;
unmask(INTR_VBLANK);
+
+ return 0;
}
static void draw(void)
//dma_fill16(3, framebuf, 0, 240 * 160 / 2);
fillblock_16byte(framebuf, 0, 240 * 160 / 16);
- vox_render(vox);
- //vox_sky_grad(vox, COLOR_HORIZON, COLOR_ZENITH);
- //vox_sky_solid(vox, COLOR_ZENITH);
+ vox_render();
+ //vox_sky_grad(COLOR_HORIZON, COLOR_ZENITH);
+ //vox_sky_solid(COLOR_ZENITH);
}
-#define OFFS(x, y) ((y) * 128 + (x))
-static short enemy_frame_offs[] = {
- OFFS(0, 128), OFFS(32, 128), OFFS(64, 128), OFFS(96, 128),
- OFFS(0, 192), OFFS(32, 192), OFFS(64, 192), OFFS(96, 192)
-};
+static inline void xform_pixel(int *xp, int *yp)
+{
+ int32_t sa = xform_sa >> 8;
+ int32_t ca = xform_ca >> 8;
+ int x = *xp;
+ int y = *yp;
+
+ *xp = (ca * x - sa * y + (120 << 8)) >> 8;
+ *yp = (sa * x + ca * y + (80 << 8)) >> 8;
+}
#define MAXBANK 0x100
ARM_IWRAM
static void gamescr_vblank(void)
{
- static int bank, bankdir, theta, s;
+ static int bank, bankdir, theta;
int32_t sa, ca;
- uint16_t *src, *dst;
- int i;
- if(!nframes) return;
+ vblcount++;
/* TODO: pre-arrange sprite tiles in gba-native format, so that I can just
* DMA them from cartridge easily
*/
- /*
- src = (void*)(spr_game_pixels + enemy_frame_offs[1]);
- dst = (void*)(VRAM_LFB_OBJ_ADDR + SPRID(0, 64));
- for(i=0; i<64; i++) {
- dma_copy32(3, dst, src, 32 / 4, 0);
- dst += 32 / 2;
- src += 128 / 2;
- }
- */
-
- dma_copy32(3, (void*)(OAM_ADDR + dynspr_base * 8), oam + dynspr_base * 4, dynspr_count * 2, 0);
+ /*dma_copy32(3, (void*)(OAM_ADDR + dynspr_base * 8), oam + dynspr_base * 4, MAX_SPR * 2, 0);*/
+ dma_copy32(3, (void*)OAM_ADDR, oam, MAX_SPR * 2, 0);
theta = -(bank << 3);
+ xform_sa = SIN(theta);
+ xform_ca = COS(theta);
#if 0
- s = 0x100000 / (MAXBANK + (abs(bank) >> 3));
- sa = ((SIN(theta) >> 8) * s) >> 12;
- ca = ((COS(theta) >> 8) * s) >> 12;
+ xform_s = 0x100000 / (MAXBANK + (abs(bank) >> 3));
+ sa = (((xform_sa) >> 8) * xform_s) >> 12;
+ ca = (((xform_ca) >> 8) * xform_s) >> 12;
#else
- s = (MAXBANK + (abs(bank) >> 3));
- sa = SIN(theta) / s;
- ca = COS(theta) / s;
+ xform_s = (MAXBANK + (abs(bank) >> 3));
+ sa = xform_sa / xform_s;
+ ca = xform_ca / xform_s;
#endif
REG_BG2X = -ca * 120 - sa * 80 + (120 << 8);
REG_BG2PC = -sa;
REG_BG2PD = ca;
- keystate = ~REG_KEYINPUT;
-
if((keystate & (BN_LEFT | BN_RIGHT)) == 0) {
if(bank) {
bank -= bankdir << 4;
if(bank < MAXBANK) bank += 16;
}
}
-
-/*
-static uint16_t skygrad[] __attribute__((section(".data"))) = {
-
- 0x662a, 0x660a, 0x660a, 0x660b, 0x660b, 0x660b, 0x660b, 0x6a0b, 0x6a0c,
- 0x6a0c, 0x6a0c, 0x6a0c, 0x6a0c, 0x6a0d, 0x6a0d, 0x6a0d, 0x6a0d, 0x6a0d,
- 0x6a0d, 0x6a0e, 0x6e0e, 0x6e0e, 0x6e0e, 0x6e0e, 0x6e0f, 0x6e0f, 0x6e0f,
- 0x6e0f, 0x6e0f, 0x6e0f, 0x6e10, 0x6e10, 0x7210, 0x7210, 0x7210, 0x7211,
- 0x7211, 0x7211, 0x71f1, 0x71f1, 0x71f2, 0x71f2, 0x71f2, 0x71f2, 0x71f2,
- 0x75f2, 0x75f3, 0x75f3, 0x75f3, 0x75f3, 0x75f3, 0x75f4, 0x75f4, 0x75f4,
- 0x75f4, 0x75f4, 0x75f5, 0x79f5, 0x79f5, 0x79f5, 0x79f5, 0x79f5, 0x79f6,
- 0x79f6, 0x79f6, 0x79f6, 0x79f6, 0x79f7, 0x79f7, 0x79f7, 0x7df7, 0x7df7,
- 0x7df7, 0x7df8, 0x7df8, 0x7df8, 0x7dd8, 0x7dd8, 0x7dd9, 0x7dd9,
-
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9,
- 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9, 0x7dd9
-};
-
-ARM_IWRAM
-static void hblank(void)
-{
- int vcount = REG_VCOUNT;
- gba_bgpal[255] = skygrad[vcount];
-}
-*/
projects / gbajam22 / blobdiff