#include "emu.h" #include "includes/jailbrek.h" PALETTE_INIT( jailbrek ) { int i; /* allocate the colortable */ machine.colortable = colortable_alloc(machine, 0x20); /* create a lookup table for the palette */ for (i = 0; i < 0x20; i++) { int r = pal4bit(color_prom[i + 0x00] >> 0); int g = pal4bit(color_prom[i + 0x00] >> 4); int b = pal4bit(color_prom[i + 0x20] >> 0); colortable_palette_set_color(machine.colortable, i, MAKE_RGB(r, g, b)); } /* color_prom now points to the beginning of the lookup table */ color_prom += 0x40; for (i = 0; i < 0x100; i++) { UINT8 ctabentry = (color_prom[i] & 0x0f) | 0x10; colortable_entry_set_value(machine.colortable, i, ctabentry); } for (i = 0x100; i < 0x200; i++) { UINT8 ctabentry = color_prom[i] & 0x0f; colortable_entry_set_value(machine.colortable, i, ctabentry); } } WRITE8_HANDLER( jailbrek_videoram_w ) { jailbrek_state *state = space->machine().driver_data(); state->m_videoram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); } WRITE8_HANDLER( jailbrek_colorram_w ) { jailbrek_state *state = space->machine().driver_data(); state->m_colorram[offset] = data; tilemap_mark_tile_dirty(state->m_bg_tilemap, offset); } static TILE_GET_INFO( get_bg_tile_info ) { jailbrek_state *state = machine.driver_data(); int attr = state->m_colorram[tile_index]; int code = state->m_videoram[tile_index] + ((attr & 0xc0) << 2); int color = attr & 0x0f; SET_TILE_INFO(0, code, color, 0); } VIDEO_START( jailbrek ) { jailbrek_state *state = machine.driver_data(); state->m_bg_tilemap = tilemap_create(machine, get_bg_tile_info, tilemap_scan_rows, 8, 8, 64, 32); tilemap_set_scrolldx(state->m_bg_tilemap, 0, 396 - 256); } static void draw_sprites( running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect ) { jailbrek_state *state = machine.driver_data(); UINT8 *spriteram = state->m_spriteram; int i; for (i = 0; i < state->m_spriteram_size; i += 4) { int attr = spriteram[i + 1]; // attributes = ?tyxcccc int code = spriteram[i] + ((attr & 0x40) << 2); int color = attr & 0x0f; int flipx = attr & 0x10; int flipy = attr & 0x20; int sx = spriteram[i + 2] - ((attr & 0x80) << 1); int sy = spriteram[i + 3]; if (flip_screen_get(machine)) { sx = 240 - sx; sy = 240 - sy; flipx = !flipx; flipy = !flipy; } drawgfx_transmask(bitmap, cliprect, machine.gfx[1], code, color, flipx, flipy, sx, sy, colortable_get_transpen_mask(machine.colortable, machine.gfx[1], color, 0)); } } SCREEN_UPDATE( jailbrek ) { jailbrek_state *state = screen->machine().driver_data(); int i; // added support for vertical scrolling (credits). 23/1/2002 -BR // bit 2 appears to be horizontal/vertical scroll control if (state->m_scroll_dir[0] & 0x04) { tilemap_set_scroll_cols(state->m_bg_tilemap, 32); tilemap_set_scroll_rows(state->m_bg_tilemap, 1); tilemap_set_scrollx(state->m_bg_tilemap, 0, 0); for (i = 0; i < 32; i++) tilemap_set_scrolly(state->m_bg_tilemap, i, ((state->m_scroll_x[i + 32] << 8) + state->m_scroll_x[i])); } else { tilemap_set_scroll_rows(state->m_bg_tilemap, 32); tilemap_set_scroll_cols(state->m_bg_tilemap, 1); tilemap_set_scrolly(state->m_bg_tilemap, 0, 0); for (i = 0; i < 32; i++) tilemap_set_scrollx(state->m_bg_tilemap, i, ((state->m_scroll_x[i + 32] << 8) + state->m_scroll_x[i])); } tilemap_draw(bitmap, cliprect, state->m_bg_tilemap, 0, 0); draw_sprites(screen->machine(), bitmap, cliprect); return 0; }