1 /* Project 16 Source Code~
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2 * Copyright (C) 2012-2016 sparky4 & pngwen & andrius4669 & joncampbell123 & yakui-lover
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4 * This file is part of Project 16.
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6 * Project 16 is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU General Public License as published by
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8 * the Free Software Foundation; either version 3 of the License, or
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9 * (at your option) any later version.
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11 * Project 16 is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU General Public License for more details.
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16 * You should have received a copy of the GNU General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>, or
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18 * write to the Free Software Foundation, Inc., 51 Franklin Street,
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19 * Fifth Floor, Boston, MA 02110-1301 USA.
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23 #include "src/lib/16_sprit.h"
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25 char* get_curr_anim_name(struct sprite *spri)
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27 // Retrive animation name list
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28 struct vrs_header far *vrs = spri->spritesheet->vrs_hdr;
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29 uint32_t far *anim_names_offsets = (uint32_t far *)
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31 vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_NAME_LIST]);
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33 return (char *)(vrs + anim_names_offsets[spri->curr_anim]);
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36 void init_anim(struct sprite *spri, int anim_index)
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38 struct vrs_header far *vrs = spri->spritesheet->vrs_hdr;
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39 uint32_t far *anim_lists_offsets = (uint32_t far *)
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41 vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_LIST]);
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42 struct vrs_animation_list_entry_t far *anim_list = (struct vrs_animation_list_entry_t far *)
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44 anim_lists_offsets[anim_index]);
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46 // Upon new animation, start from the first sprite in it
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47 spri->curr_anim = anim_index;
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48 spri->curr_anim_spri = 0;
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49 spri->curr_spri_id = anim_list[0].sprite_id;
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50 spri->delay = anim_list[0].delay;
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52 spri->curr_anim_list = anim_list;
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55 int set_anim_by_id(struct sprite *spri, int anim_id)
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57 int new_anim_index = 0;
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59 struct vrs_header far *vrs = spri->spritesheet->vrs_hdr;
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60 // Retruve animation ids list
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61 uint16_t far *anim_ids = (uint16_t far *)
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63 vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_ID_LIST]);
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65 // Loop through animation id untill match or end of list
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66 while(iter_id = anim_ids[new_anim_index])
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68 // Return on successful match
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69 if (iter_id == anim_id)
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71 init_anim(spri, new_anim_index);
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79 void print_anim_ids(struct sprite *spri)
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81 int new_anim_index = 0;
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83 struct vrs_header far *vrs = spri->spritesheet->vrs_hdr;
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84 // Retruve animation ids list
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85 uint16_t far *anim_ids = (uint16_t far *)
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87 vrs->offset_table[VRS_HEADER_OFFSET_ANIMATION_ID_LIST]);
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89 if(!anim_ids[new_anim_index])
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91 // Loop through animation id untill match or end of list
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92 while(iter_id = anim_ids[new_anim_index])
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94 printf("s%d ", iter_id);
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99 void oldanimate_spri(struct sprite *spri, video_t *video)
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105 vga_state.vga_graphics_ram = (VGA_RAM_PTR)video->page[0].data;//vga_state.vga_graphics_ram; // save original mem ptr
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109 i = get_vrl_by_id(spri->spritesheet, spri->curr_spri_id, spri->sprite_vrl_cont);
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112 //Quit (gv, "Error retriving required sprite");
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116 // replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0)
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117 vga_state.vga_draw_stride_limit = (video->page[0].width + 3 - spri->x) >> 2;
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120 modexClearRegion(&video->page[0], spri->x, spri->y, 16, 32, 1);
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122 draw_vrl1_vgax_modex(
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123 spri->x,//-video->page[0].dx,
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124 spri->y,//-video->page[0].dy,
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125 spri->sprite_vrl_cont->vrl_header,
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126 spri->sprite_vrl_cont->line_offsets,
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127 spri->sprite_vrl_cont->buffer + sizeof(struct vrl1_vgax_header),
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128 spri->sprite_vrl_cont->data_size
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133 vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = video->page[0].stridew;
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135 // Depending on delay, update indices
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136 switch(spri->delay){
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137 // Delay = 0 means that sprite should loop. Nothing to change here
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141 // Delay = 1 means that on next time unit sprite should be changed
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143 spri->curr_anim_spri++;
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145 // If we hit the end of an animation sequence, restart it
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146 if(!(spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id)){
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147 spri->curr_anim_spri = 0;
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148 spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id;
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150 spri->delay = spri->curr_anim_list[spri->curr_anim_spri].delay;
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152 // Delay > 1 means that we should not change sprite yet. Decrease delay
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157 vga_state.vga_graphics_ram = video->omemptr;
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161 void animate_spri(struct sprite *spri, video_t *video)
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163 #define GVARVIDEO video
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164 #define VMEMPAGESIZE2 GVARVIDEO->page[0].pagesize+GVARVIDEO->page[1].pagesize
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165 #define VMEMPAGEDATA2 GVARVIDEO->page[2].data
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166 unsigned int i,o,o2; int j;
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168 int overdraw = 4;//16; // how many pixels to "overdraw" so that moving sprites with edge pixels don't leave streaks.
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169 // if the sprite's edge pixels are clear anyway, you can set this to 0.
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170 VGA_RAM_PTR omemptr;
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175 omemptr = (VGA_RAM_PTR)video->page[0].data;//vga_state.vga_graphics_ram; // save original mem ptr
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180 j = get_vrl_by_id(spri->spritesheet, spri->curr_spri_id, spri->sprite_vrl_cont);
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183 //Quit (gv, "Error retriving required sprite");
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187 // render box bounds. y does not need modification, but x and width must be multiple of 4
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188 if (x >= overdraw) rx = (x - overdraw) & (~3);
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189 else rx = -(GVARVIDEO->page[0].dx);
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190 if (y >= overdraw) ry = (y - overdraw);
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191 else ry = -(GVARVIDEO->page[0].dy);
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192 h = spri->sprite_vrl_cont->vrl_header->height + overdraw + y - ry;
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193 w = (x + spri->sprite_vrl_cont->vrl_header->width + (overdraw*2) + 3 - rx) & (~3);//round up
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194 if ((rx+w) > GVARVIDEO->page[0].width) w = GVARVIDEO->page[0].width-rx;
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195 if ((ry+h) > GVARVIDEO->page[0].height) h = GVARVIDEO->page[0].height-ry;
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197 // block copy pattern to where we will draw the sprite
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198 vga_setup_wm1_block_copy();
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199 o2 = VMEMPAGESIZE2;
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200 o = (0x10000UL - (uint16_t)VMEMPAGEDATA2) + (ry * GVARVIDEO->page[0].stridew) + (rx >> 2); // source offscreen
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201 for (i=0;i < h;i++,o += GVARVIDEO->page[0].stridew,o2 += (w >> 2)) vga_wm1_mem_block_copy(o2,o,w >> 2);
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203 // must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally
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204 vga_restore_rm0wm0();
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206 // replace VGA stride with our own and mem ptr. then sprite rendering at this stage is just (0,0)
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207 vga_state.vga_draw_stride_limit = (GVARVIDEO->page[0].width + 3 - x) >> 2;//round up
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208 vga_state.vga_draw_stride = w >> 2;
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209 vga_state.vga_graphics_ram = omemptr + VMEMPAGESIZE2;
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211 // then the sprite. note modding ram ptr means we just draw to (x&3,0)
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213 modexClearRegion(&GVARVIDEO->page[0], x, y, 16, 32, 1);
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215 draw_vrl1_vgax_modex(
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218 spri->sprite_vrl_cont->vrl_header,
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219 spri->sprite_vrl_cont->line_offsets,
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220 spri->sprite_vrl_cont->buffer + sizeof(struct vrl1_vgax_header),
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221 spri->sprite_vrl_cont->data_size
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225 vga_state.vga_graphics_ram = omemptr;
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227 // block copy to visible RAM from offscreen
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228 vga_setup_wm1_block_copy();
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229 o = VMEMPAGESIZE2; // source offscreen
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230 o2 = (ry * GVARVIDEO->page[0].stridew) + (rx >> 2); // dest visible (original stride)
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231 for (i=0;i < h;i++,o += vga_state.vga_draw_stride,o2 += GVARVIDEO->page[0].stridew) vga_wm1_mem_block_copy(o2,o,w >> 2);
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232 // must restore Write Mode 0/Read Mode 0 for this code to continue drawing normally
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233 vga_restore_rm0wm0();
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236 vga_state.vga_draw_stride_limit = vga_state.vga_draw_stride = GVARVIDEO->page[0].stridew;
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238 // Depending on delay, update indices
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239 switch(spri->delay){
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240 // Delay = 0 means that sprite should loop. Nothing to change here
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244 // Delay = 1 means that on next time unit sprite should be changed
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246 spri->curr_anim_spri++;
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248 // If we hit the end of an animation sequence, restart it
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249 if(!(spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id)){
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250 spri->curr_anim_spri = 0;
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251 spri->curr_spri_id = spri->curr_anim_list[spri->curr_anim_spri].sprite_id;
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253 spri->delay = spri->curr_anim_list[spri->curr_anim_spri].delay;
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255 // Delay > 1 means that we should not change sprite yet. Decrease delay
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260 vga_state.vga_graphics_ram = video->omemptr;
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